





Network Working Group                                      S. Waldbusser
Request for Comments: 1513                    Carnegie Mellon University
Updates: 1271                                             September 1993


       Token Ring Extensions to the Remote Network Monitoring MIB

Status of this Memo

   This RFC specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" for the standardization state and status
   of this protocol.  Distribution of this memo is unlimited.

Abstract

   This memo defines extensions to the Remote Network Monitoring MIB for
   managing 802.5 Token Ring networks.

   The Remote Network Monitoring MIB, RFC 1271, defines a framework for
   remote monitoring functions implemented on a network probe.  That MIB
   defines objects broken down into nine functional groups.  Some of
   those functional groups, the statistics and the history groups, have
   a view of the data-link layer that is specific to the media type and
   require specific objects to be defined for each media type.  RFC 1271
   defined those specific objects necessary for Ethernet.  This
   companion memo defines those specific objects necessary for Token
   Ring LANs.

   In addition, this memo defines some additional monitoring functions
   specifically for Token Ring.  These are defined in the Ring Station
   Group, the Ring Station Order Group, the Ring Station Configuration
   Group, and the Source Routing Statistics Group.

Table of Contents

   1. The Network Management Framework ......................    2
   2. Guidelines for implementing RFC1271 objects on a
      Token Ring network ....................................    3
   2.1 Host Group ...........................................    3
   2.2 Matrix Group .........................................    3
   2.3 Filter Group .........................................    3
   2.4 Other comments .......................................    4
   3. Overview of the RMON Token Ring Extensions MIB ........    4
   3.1 The Token Ring Statistics Groups .....................    4
   3.2 The Token Ring History Groups ........................    5
   3.3 The Token Ring Ring Station Group ....................    5



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   3.4 The Token Ring Ring Station Order Group ..............    5
   3.5 The Token Ring Ring Station Config Group .............    5
   3.6 The Token Ring Source Routing Group ..................    5
   4. Terminology ...........................................    5
   5. Definitions ...........................................    6
   5.1 The Token Ring Mac-Layer Statistics Group ............    6
   5.2 The Token Ring Promiscuous Statistics Group ..........   14
   5.3 The Token Ring Mac-Layer History Group ...............   19
   5.4 The Token Ring Promiscuous History Group .............   27
   5.5 The Token Ring Ring Station Group ....................   32
   5.6 The Token Ring Ring Station Order Group ..............   41
   5.7 The Token Ring Ring Station Config Group .............   43
   5.8 The Token Ring Source Routing Group ..................   47
   6. References ............................................   54
   7. Acknowledgments .......................................   55
   8. Security Considerations ...............................   55
   9. Author's Address ......................................   55

1.  The Network Management Framework

   The Internet-standard Network Management Framework consists of three
   components.  They are:

      STD 16, RFC 1155 [1] which defines the SMI, the mechanisms used
      for describing and naming objects for the purpose of management.
      STD 16, RFC 1212 [2] defines a more concise description mechanism,
      which is wholly consistent with the SMI.

      STD 17, RFC 1213 [3] which defines MIB-II, the core set of managed
      objects for the Internet suite of protocols.

      STD 15, RFC 1157 [4] which defines the SNMP, the protocol used for
      network access to managed objects.

   The Framework permits new objects to be defined for the purpose of
   experimentation and evaluation.

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Within a given MIB module,
   objects are defined using STD 16, RFC 1212's OBJECT-TYPE macro.  At a
   minimum, each object has a name, a syntax, an access-level, and an
   implementation-status.

   The name is an object identifier, an administratively assigned name,
   which specifies an object type.  The object type together with an
   object instance serves to uniquely identify a specific instantiation
   of the object.  For human convenience, we often use a textual string,
   termed the object descriptor, to also refer to the object type.



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   The syntax of an object type defines the abstract data structure
   corresponding to that object type.  The ASN.1[5] language is used for
   this purpose.  However, STD 16, RFC 1155 purposely restricts the
   ASN.1 constructs which may be used.  These restrictions are
   explicitly made for simplicity.

   The access-level of an object type defines whether it makes "protocol
   sense" to read and/or write the value of an instance of the object
   type.  (This access-level is independent of any administrative
   authorization policy.)

   The implementation-status of an object type indicates whether the
   object is mandatory, optional, obsolete, or deprecated.

2.  Guidelines for implementing RFC1271 objects on a Token
    Ring network

   Wherever a MacAddress is to be used in this MIB the source routing
   bit is stripped off.  The resulting address will be consistently
   valid for all packets sent by a particular node.

2.1.  Host Group

   Only Token Ring isolating errors will increment the error counter for
   a particular hostEntry.  The isolating errors are: LineErrors,
   BurstErrors, ACErrors, InternalErrors, and AbortErrors.  ACErrors
   will increment the error counter only for the nearest upstream
   neighbor of the station reporting the error.  LineErrors and
   BurstErrors will increment the error counters for the station
   reporting the error and its neighbor upstream neighbor.
   InternalErrors and AbortErrors will increment the error counter for
   the station reporting the error only.  In addition, congestionErrors
   will also be counted for each hostEntry. These errors will be
   incremented in the host entry of the station that reports the errors
   in an error report frame.

   The hostOutPkts and hostOutOctets counters shall not be incremented
   for packets with errors.

2.2.  Matrix Group

   Error counters are never incremented.

2.3.  Filter Group

   The following conditions make up the status bitmask for token ring
   networks:




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               bit #    Error
                   3    First packet after some packets were dropped
                   4    Packet with the Frame Copied Bit set
                   5    Packet with the Address Recognized Bit set

   For the purpose of the packet match algorithm, the filters assume a
   32 byte RIF field.  Thus, when matching, the filter is compared to
   the packet starting at the AC byte of the packet, until the end of
   the RIF field; then the unused RIF bytes in the filter are skipped
   and matching proceeds from that point.  Any filter "care" bits in the
   RIF that don't correspond to bytes in the input packet will cause the
   filter to fail.

2.4.  Other comments

   Because soft error report packets may be sent with assured delivery,
   some errors may be accidently reported twice on devices that perform
   the RMON function promiscuously.

3.  Overview of the RMON Token Ring Extensions MIB

   The Remote Network Monitoring MIB, RFC 1271, defines a framework for
   remote monitoring functions implemented on a network probe.  That MIB
   defines objects broken down into nine functional groups.  Some of
   those functional groups, the statistics and the history groups, have
   a view of the data-link layer that is specific to the media type and
   require specific objects to be defined for each media type.  RFC 1271
   defined those specific objects necessary for Ethernet.  This MIB
   defines contains four groups that define those specific objects
   necessary for Token Ring LANs.

   In addition, this memo defines some additional monitoring functions
   specifically for Token Ring.  These are defined in the Ring Station
   Group, the Ring Station Order Group, the Ring Station Configuration
   Group, and the Source Routing Statistics Group.

3.1.  The Token Ring Statistics Groups

   The Token Ring statistics groups contain current utilization and
   error statistics.  The statistics are broken down into two groups,
   the Token Ring Mac-Layer Statistics Group and the Token Ring
   Promiscuous Statistics Group.  The Token Ring Mac-Layer Statistics
   Group collects information from Mac Layer, including error reports
   for the ring and ring utilization of the Mac Layer.  The Token Ring
   Promiscuous Statistics Group collects utilization statistics from
   data packets collected promiscuously.





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3.2.  The Token Ring History Groups

   The Token Ring History Groups contain historical utilization and
   error statistics.  The statistics are broken down into two groups,
   the Token Ring Mac-Layer History Group and the Token Ring Promiscuous
   History Group.  The Token Ring Mac-Layer History Group collects
   information from Mac Layer, including error reports for the ring and
   ring utilization of the Mac Layer.  The Token Ring Promiscuous
   History Group collects utilization statistics from data packets
   collected promiscuously.

3.3.  The Token Ring Ring Station Group

   The Token Ring Ring Station Group contains statistics and status
   information associated with each Token Ring station on the local
   ring.  In addition, this group provides status information for each
   ring being monitored.

3.4.  The Token Ring Ring Station Order Group

   The Token Ring Ring Station Order Group provides the order of the
   stations on monitored rings.

3.5.  The Token Ring Ring Station Config Group

   The Token Ring Ring Station Config Group manages token ring stations
   through active means.  Any station on a monitored ring may be removed
   or have configuration information downloaded from it.

3.6.  The Token Ring Source Routing Group

   The Token Ring Source Routing Group contains utilization statistics
   derived from source routing information optionally present in token
   ring packets.

4.  Terminology

   The 802.5 specification [7] defines the term "good frame" as a frame
   that is bounded by a valid SD and ED, is an integral number of octets
   in length, is composed of only 0 and 1 bits between the SD and the
   ED, has the FF bits of the GC field equal to 00 or 01, has a valid
   FCS, and has a minimum of 18 octets between the SD and the ED.  This
   document will use the term "good frame" in the same manner.








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5.  Definitions

          TOKEN-RING-RMON-MIB DEFINITIONS ::= BEGIN

          IMPORTS
              Counter, TimeTicks          FROM RFC1155-SMI
              OBJECT-TYPE                 FROM RFC-1212
              OwnerString, EntryStatus,   -- Textual Conventions
              rmon, statistics, history
                                          FROM RFC1271-MIB;


             -- All representations of MAC addresses in this MIB
             -- Module use, as a textual convention (i.e. this
             -- convention does not affect their encoding), the
             -- data type:

             MacAddress ::= OCTET STRING (SIZE (6)) -- a 6 octet
                                                    -- address in
                                                    -- the "canonical"
                                                    -- order
             -- defined by IEEE 802.1a, i.e., as if it were
             -- transmitted least significant bit first, even though
             -- 802.5 (in contrast to other 802.x protocols) requires
             -- MAC addresses to be transmitted most significant bit
             -- first.

              TimeInterval ::= INTEGER
              -- A period of time, measured in units of 0.01 seconds.

          --  This MIB module uses the extended OBJECT-TYPE macro as
          --  defined in [2].

          --  Token Ring Remote Network Monitoring MIB

              tokenRing             OBJECT IDENTIFIER ::= { rmon 10 }


          -- The Token Ring Mac-Layer Statistics Group
          --
          -- Implementation of this group is optional

          tokenRingMLStatsTable OBJECT-TYPE
              SYNTAX SEQUENCE OF TokenRingMLStatsEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of Mac-Layer Token Ring statistics



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                      entries."
              ::= { statistics 2 }

          tokenRingMLStatsEntry OBJECT-TYPE
              SYNTAX TokenRingMLStatsEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of Mac-Layer statistics kept for a
                      particular Token Ring interface."
              INDEX { tokenRingMLStatsIndex }
              ::= { tokenRingMLStatsTable 1 }

          -- As an example, an instance of the
          -- tokenRingMLStatsMacOctets object
          -- might be named tokenRingMLStatsMacOctets.1

          TokenRingMLStatsEntry ::= SEQUENCE {
              tokenRingMLStatsIndex                     INTEGER,
              tokenRingMLStatsDataSource            OBJECT IDENTIFIER,
              tokenRingMLStatsDropEvents                Counter,
              tokenRingMLStatsMacOctets                 Counter,
              tokenRingMLStatsMacPkts                   Counter,
              tokenRingMLStatsRingPurgeEvents           Counter,
              tokenRingMLStatsRingPurgePkts             Counter,
              tokenRingMLStatsBeaconEvents              Counter,
              tokenRingMLStatsBeaconTime                TimeInterval,
              tokenRingMLStatsBeaconPkts                Counter,
              tokenRingMLStatsClaimTokenEvents          Counter,
              tokenRingMLStatsClaimTokenPkts            Counter,
              tokenRingMLStatsNAUNChanges               Counter,
              tokenRingMLStatsLineErrors                Counter,
              tokenRingMLStatsInternalErrors            Counter,
              tokenRingMLStatsBurstErrors               Counter,
              tokenRingMLStatsACErrors                  Counter,
              tokenRingMLStatsAbortErrors               Counter,
              tokenRingMLStatsLostFrameErrors           Counter,
              tokenRingMLStatsCongestionErrors          Counter,
              tokenRingMLStatsFrameCopiedErrors         Counter,
              tokenRingMLStatsFrequencyErrors           Counter,
              tokenRingMLStatsTokenErrors               Counter,
              tokenRingMLStatsSoftErrorReports          Counter,
              tokenRingMLStatsRingPollEvents            Counter,
              tokenRingMLStatsOwner                     OwnerString,
              tokenRingMLStatsStatus                    EntryStatus
          }





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          tokenRingMLStatsIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies this
                      tokenRingMLStats entry."
              ::= { tokenRingMLStatsEntry 1 }

          tokenRingMLStatsDataSource OBJECT-TYPE
              SYNTAX OBJECT IDENTIFIER
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "This object identifies the source of the data
                      that this tokenRingMLStats entry is configured to
                      analyze.  This source can be any tokenRing
                      interface on this device.  In order to identify a
                      particular interface, this object shall identify
                      the instance of the ifIndex object, defined in
                      MIB-II [3], for the desired interface.  For
                      example, if an entry were to receive data from
                      interface #1, this object would be set to
                      ifIndex.1.

                      The statistics in this group reflect all error
                      reports on the local network segment attached to
                      the identified interface.

                      This object may not be modified if the associated
                      tokenRingMLStatsStatus object is equal to
                      valid(1)."
              ::= { tokenRingMLStatsEntry 2 }

          tokenRingMLStatsDropEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of events in which packets were
                      dropped by the probe due to lack of resources.
                      Note that this number is not necessarily the
                      number of packets dropped; it is just the number
                      of times this condition has been detected.  This
                      value is the same as the corresponding
                      tokenRingPStatsDropEvents."
              ::= { tokenRingMLStatsEntry 3 }




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          tokenRingMLStatsMacOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of octets of data in MAC packets
                      (excluding those that were not good frames)
                      received on the network (excluding framing bits
                      but including FCS octets)."
              ::= { tokenRingMLStatsEntry 4 }

          tokenRingMLStatsMacPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of MAC packets (excluding
                      packets that were not good frames) received."
              ::= { tokenRingMLStatsEntry 5 }

          tokenRingMLStatsRingPurgeEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of times that the ring enters
                      the ring purge state from normal ring state.  The
                      ring purge state that comes in response to the
                      claim token or beacon state is not counted."
              ::= { tokenRingMLStatsEntry 6 }

          tokenRingMLStatsRingPurgePkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of ring purge MAC packets
                      detected by probe."
              ::= { tokenRingMLStatsEntry 7 }

          tokenRingMLStatsBeaconEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of times that the ring enters a
                      beaconing state (beaconFrameStreamingState,
                      beaconBitStreamingState,



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                      beaconSetRecoveryModeState, or
                      beaconRingSignalLossState) from a non-beaconing
                      state.  Note that a change of the source address
                      of the beacon packet does not constitute a new
                      beacon event."
              ::= { tokenRingMLStatsEntry 8 }

          tokenRingMLStatsBeaconTime OBJECT-TYPE
              SYNTAX TimeInterval
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total amount of time that the ring has been
                      in the beaconing state."
              ::= { tokenRingMLStatsEntry 9 }

          tokenRingMLStatsBeaconPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of beacon MAC packets detected
                      by the probe."
              ::= { tokenRingMLStatsEntry 10 }

          tokenRingMLStatsClaimTokenEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of times that the ring enters
                      the claim token state from normal ring state or
                      ring purge state.  The claim token state that
                      comes in response to a beacon state is not
                      counted."
              ::= { tokenRingMLStatsEntry 11 }

          tokenRingMLStatsClaimTokenPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of claim token MAC packets
                      detected by the probe."
              ::= { tokenRingMLStatsEntry 12 }






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          tokenRingMLStatsNAUNChanges OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of NAUN changes detected by the
                      probe."
              ::= { tokenRingMLStatsEntry 13 }

          tokenRingMLStatsLineErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of line errors reported in error
                      reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 14 }

          tokenRingMLStatsInternalErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of adapter internal errors
                      reported in error reporting packets detected by
                      the probe."
              ::= { tokenRingMLStatsEntry 15 }

          tokenRingMLStatsBurstErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of burst errors reported in
                      error reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 16 }

          tokenRingMLStatsACErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of AC (Address Copied)  errors
                      reported in error reporting packets detected by
                      the probe."
              ::= { tokenRingMLStatsEntry 17 }





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          tokenRingMLStatsAbortErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of abort delimiters reported in
                      error reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 18 }

          tokenRingMLStatsLostFrameErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of lost frame errors reported in
                      error reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 19 }

          tokenRingMLStatsCongestionErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of receive congestion errors
                      reported in error reporting packets detected by
                      the probe."
              ::= { tokenRingMLStatsEntry 20 }

          tokenRingMLStatsFrameCopiedErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frame copied errors reported
                      in error reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 21 }

          tokenRingMLStatsFrequencyErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frequency errors reported in
                      error reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 22 }






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          tokenRingMLStatsTokenErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of token errors reported in
                      error reporting packets detected by the probe."
              ::= { tokenRingMLStatsEntry 23 }

          tokenRingMLStatsSoftErrorReports OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of soft error report frames
                      detected by the probe."
              ::= { tokenRingMLStatsEntry 24 }

          tokenRingMLStatsRingPollEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of ring poll events detected by
                      the probe (i.e. the number of ring polls initiated
                      by the active monitor that were detected)."
              ::= { tokenRingMLStatsEntry 25 }

          tokenRingMLStatsOwner OBJECT-TYPE
              SYNTAX OwnerString
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The entity that configured this entry and is
                      therefore using the resources assigned to it."
              ::= { tokenRingMLStatsEntry 26 }

          tokenRingMLStatsStatus OBJECT-TYPE
              SYNTAX EntryStatus
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The status of this tokenRingMLStats entry."
              ::= { tokenRingMLStatsEntry 27 }







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          -- The Token Ring Promiscuous Statistics Group
          --
          -- Implementation of this group is optional

          tokenRingPStatsTable OBJECT-TYPE
              SYNTAX SEQUENCE OF TokenRingPStatsEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of promiscuous Token Ring statistics
                      entries."
              ::= { statistics 3 }

          tokenRingPStatsEntry OBJECT-TYPE
              SYNTAX TokenRingPStatsEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of promiscuous statistics kept for
                      non-MAC packets on a particular Token Ring
                      interface."
              INDEX { tokenRingPStatsIndex }
              ::= { tokenRingPStatsTable 1 }

          -- As an example, an instance of the
          -- tokenRingPStatsDataOctets object
          -- might be named tokenRingPStatsDataOctets.1

          TokenRingPStatsEntry ::= SEQUENCE {
              tokenRingPStatsIndex                          INTEGER,
              tokenRingPStatsDataSource               OBJECT IDENTIFIER,
              tokenRingPStatsDropEvents                     Counter,
              tokenRingPStatsDataOctets                     Counter,
              tokenRingPStatsDataPkts                       Counter,
              tokenRingPStatsDataBroadcastPkts              Counter,
              tokenRingPStatsDataMulticastPkts              Counter,
              tokenRingPStatsDataPkts18to63Octets           Counter,
              tokenRingPStatsDataPkts64to127Octets          Counter,
              tokenRingPStatsDataPkts128to255Octets         Counter,
              tokenRingPStatsDataPkts256to511Octets         Counter,
              tokenRingPStatsDataPkts512to1023Octets        Counter,
              tokenRingPStatsDataPkts1024to2047Octets       Counter,
              tokenRingPStatsDataPkts2048to4095Octets       Counter,
              tokenRingPStatsDataPkts4096to8191Octets       Counter,
              tokenRingPStatsDataPkts8192to18000Octets      Counter,
              tokenRingPStatsDataPktsGreaterThan18000Octets Counter,
              tokenRingPStatsOwner                          OwnerString,
              tokenRingPStatsStatus                         EntryStatus



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          }

          tokenRingPStatsIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies this
                      tokenRingPStats entry."
              ::= { tokenRingPStatsEntry 1 }

          tokenRingPStatsDataSource OBJECT-TYPE
              SYNTAX OBJECT IDENTIFIER
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "This object identifies the source of the data
                      that this tokenRingPStats entry is configured to
                      analyze.  This source can be any tokenRing
                      interface on this device.  In order to identify a
                      particular interface, this object shall identify
                      the instance of the ifIndex object, defined in
                      MIB-II [3], for the desired interface.  For
                      example, if an entry were to receive data from
                      interface #1, this object would be set to
                      ifIndex.1.

                      The statistics in this group reflect all non-MAC
                      packets on the local network segment attached to
                      the identified interface.

                      This object may not be modified if the associated
                      tokenRingPStatsStatus object is equal to
                      valid(1)."
              ::= { tokenRingPStatsEntry 2 }

          tokenRingPStatsDropEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of events in which packets were
                      dropped by the probe due to lack of resources.
                      Note that this number is not necessarily the
                      number of packets dropped; it is just the number
                      of times this condition has been detected.  This
                      value is the same as the corresponding
                      tokenRingMLStatsDropEvents"



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              ::= { tokenRingPStatsEntry 3 }

          tokenRingPStatsDataOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of octets of data in good frames
                      received on the network (excluding framing bits
                      but including FCS octets) in non-MAC packets."
              ::= { tokenRingPStatsEntry 4 }

          tokenRingPStatsDataPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of non-MAC packets in good
                      frames.  received."
              ::= { tokenRingPStatsEntry 5 }

          tokenRingPStatsDataBroadcastPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were directed to an LLC broadcast address
                      (0xFFFFFFFFFFFF or 0xC000FFFFFFFF)."
              ::= { tokenRingPStatsEntry 6 }

          tokenRingPStatsDataMulticastPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were directed to a local or global multicast
                      or functional address.  Note that this number does
                      not include packets directed to the broadcast
                      address."
              ::= { tokenRingPStatsEntry 7 }

          tokenRingPStatsDataPkts18to63Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION



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                      "The total number of good non-MAC frames received
                      that were between 18 and 63 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 8 }

          tokenRingPStatsDataPkts64to127Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 64 and 127 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 9 }

          tokenRingPStatsDataPkts128to255Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 128 and 255 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 10 }

          tokenRingPStatsDataPkts256to511Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 256 and 511 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 11 }

          tokenRingPStatsDataPkts512to1023Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 512 and 1023 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."



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              ::= { tokenRingPStatsEntry 12 }

          tokenRingPStatsDataPkts1024to2047Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 1024 and 2047 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 13 }

          tokenRingPStatsDataPkts2048to4095Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 2048 and 4095 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 14 }

          tokenRingPStatsDataPkts4096to8191Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 4096 and 8191 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 15 }

          tokenRingPStatsDataPkts8192to18000Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were between 8192 and 18000 octets in length
                      inclusive, excluding framing bits but including
                      FCS octets."
              ::= { tokenRingPStatsEntry 16 }

          tokenRingPStatsDataPktsGreaterThan18000Octets OBJECT-TYPE
              SYNTAX Counter



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              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      that were greater than 18000 octets in length,
                      excluding framing bits but including FCS octets."
              ::= { tokenRingPStatsEntry 17 }

          tokenRingPStatsOwner OBJECT-TYPE
              SYNTAX OwnerString
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The entity that configured this entry and is
                      therefore using the resources assigned to it."
              ::= { tokenRingPStatsEntry 18 }

          tokenRingPStatsStatus OBJECT-TYPE
              SYNTAX EntryStatus
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The status of this tokenRingPStats entry."
              ::= { tokenRingPStatsEntry 19 }


          -- The Token Ring History Groups

          -- When an entry in the historyControlTable is created that
          -- identifies a token ring interface as its
          -- historyControlDataSource, the probe shall create
          -- corresponding entries in the tokenRingMLHistoryTable
          -- and/or the tokenRingPHistoryTable, depending on which
          -- groups it supports.


          -- The Token Ring Mac-Layer History Group
          --
          -- Implementation of this group is optional.
          -- Implementation of this group requires implementation of
          -- the historyControl group from RFC1271.

          tokenRingMLHistoryTable OBJECT-TYPE
              SYNTAX SEQUENCE OF TokenRingMLHistoryEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of Mac-Layer Token Ring statistics



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                      entries."
              ::= { history 3 }

          tokenRingMLHistoryEntry OBJECT-TYPE
              SYNTAX TokenRingMLHistoryEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of Mac-Layer statistics kept for a
                      particular Token Ring interface."
              INDEX { tokenRingMLHistoryIndex,
                      tokenRingMLHistorySampleIndex }
              ::= { tokenRingMLHistoryTable 1 }

          -- As an example, an instance of the
          -- tokenRingMLHistoryMacOctets
          -- object might be named tokenRingMLHistoryMacOctets.1.27

          TokenRingMLHistoryEntry ::= SEQUENCE {
              tokenRingMLHistoryIndex                     INTEGER,
              tokenRingMLHistorySampleIndex               INTEGER,
              tokenRingMLHistoryIntervalStart             TimeTicks,
              tokenRingMLHistoryDropEvents                Counter,
              tokenRingMLHistoryMacOctets                 Counter,
              tokenRingMLHistoryMacPkts                   Counter,
              tokenRingMLHistoryRingPurgeEvents           Counter,
              tokenRingMLHistoryRingPurgePkts             Counter,
              tokenRingMLHistoryBeaconEvents              Counter,
              tokenRingMLHistoryBeaconTime                TimeInterval,
              tokenRingMLHistoryBeaconPkts                Counter,
              tokenRingMLHistoryClaimTokenEvents          Counter,
              tokenRingMLHistoryClaimTokenPkts            Counter,
              tokenRingMLHistoryNAUNChanges               Counter,
              tokenRingMLHistoryLineErrors                Counter,
              tokenRingMLHistoryInternalErrors            Counter,
              tokenRingMLHistoryBurstErrors               Counter,
              tokenRingMLHistoryACErrors                  Counter,
              tokenRingMLHistoryAbortErrors               Counter,
              tokenRingMLHistoryLostFrameErrors           Counter,
              tokenRingMLHistoryCongestionErrors          Counter,
              tokenRingMLHistoryFrameCopiedErrors         Counter,
              tokenRingMLHistoryFrequencyErrors           Counter,
              tokenRingMLHistoryTokenErrors               Counter,
              tokenRingMLHistorySoftErrorReports          Counter,
              tokenRingMLHistoryRingPollEvents            Counter,
              tokenRingMLHistoryActiveStations            INTEGER
          }




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          tokenRingMLHistoryIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The history of which this entry is a part.  The
                      history identified by a particular value of this
                      index is the same history as identified by the
                      same value of historyControlIndex."
              ::= { tokenRingMLHistoryEntry 1 }

          tokenRingMLHistorySampleIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "An index that uniquely identifies the particular
                      Mac-Layer sample this entry represents among all
                      Mac-Layer samples associated with the same
                      historyControlEntry.  This index starts at 1 and
                      increases by one as each new sample is taken."
              ::= { tokenRingMLHistoryEntry 2 }

          tokenRingMLHistoryIntervalStart OBJECT-TYPE
              SYNTAX TimeTicks
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of sysUpTime at the start of the
                      interval over which this sample was measured.  If
                      the probe keeps track of the time of day, it
                      should start the first sample of the history at a
                      time such that when the next hour of the day
                      begins, a sample is started at that instant.  Note
                      that following this rule may require the probe to
                      delay collecting the first sample of the history,
                      as each sample must be of the same interval.  Also
                      note that the sample which is currently being
                      collected is not accessible in this table until
                      the end of its interval."
              ::= { tokenRingMLHistoryEntry 3 }

          tokenRingMLHistoryDropEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of events in which packets were



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                      dropped by the probe due to lack of resources
                      during this sampling interval.  Note that this
                      number is not necessarily the number of packets
                      dropped, it is just the number of times this
                      condition has been detected."
              ::= { tokenRingMLHistoryEntry 4 }

          tokenRingMLHistoryMacOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of octets of data in MAC packets
                      (excluding those that were not good frames)
                      received on the network during this sampling
                      interval (excluding framing bits but including FCS
                      octets)."
              ::= { tokenRingMLHistoryEntry 5 }

          tokenRingMLHistoryMacPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of MAC packets (excluding those
                      that were not good frames) received during this
                      sampling interval."
              ::= { tokenRingMLHistoryEntry 6 }

          tokenRingMLHistoryRingPurgeEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of times that the ring entered
                      the ring purge state from normal ring state during
                      this sampling interval.  The ring purge state that
                      comes from the claim token or beacon state is not
                      counted."
              ::= { tokenRingMLHistoryEntry 7 }

          tokenRingMLHistoryRingPurgePkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of Ring Purge MAC packets
                      detected by the probe during this sampling



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                      interval."
              ::= { tokenRingMLHistoryEntry 8 }

          tokenRingMLHistoryBeaconEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of times that the ring enters a
                      beaconing state (beaconFrameStreamingState,
                      beaconBitStreamingState,
                      beaconSetRecoveryModeState, or
                      beaconRingSignalLossState) during this sampling
                      interval.  Note that a change of the source
                      address of the beacon packet does not constitute a
                      new beacon event."
              ::= { tokenRingMLHistoryEntry 9 }

          tokenRingMLHistoryBeaconTime OBJECT-TYPE
              SYNTAX TimeInterval
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The amount of time that the ring has been in the
                      beaconing state during this sampling interval."
              ::= { tokenRingMLHistoryEntry 10 }

          tokenRingMLHistoryBeaconPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of beacon MAC packets detected
                      by the probe during this sampling interval."
              ::= { tokenRingMLHistoryEntry 11 }

          tokenRingMLHistoryClaimTokenEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of times that the ring enters
                      the claim token state from normal ring state or
                      ring purge state during this sampling interval.
                      The claim token state that comes from the beacon
                      state is not counted."
              ::= { tokenRingMLHistoryEntry 12 }




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          tokenRingMLHistoryClaimTokenPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of claim token MAC packets
                      detected by the probe during this sampling
                      interval."
              ::= { tokenRingMLHistoryEntry 13 }

          tokenRingMLHistoryNAUNChanges OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of NAUN changes detected by the
                      probe during this sampling interval."
              ::= { tokenRingMLHistoryEntry 14 }

          tokenRingMLHistoryLineErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of line errors reported in error
                      reporting packets detected by the probe during
                      this sampling interval."
              ::= { tokenRingMLHistoryEntry 15 }

          tokenRingMLHistoryInternalErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of adapter internal errors
                      reported in error reporting packets detected by
                      the probe during this sampling interval."
              ::= { tokenRingMLHistoryEntry 16 }

          tokenRingMLHistoryBurstErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of burst errors reported in
                      error reporting packets detected by the probe
                      during this sampling interval."
              ::= { tokenRingMLHistoryEntry 17 }



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          tokenRingMLHistoryACErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of AC (Address Copied) errors
                      reported in error reporting packets detected by
                      the probe during this sampling interval."
              ::= { tokenRingMLHistoryEntry 18 }

          tokenRingMLHistoryAbortErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of abort delimiters reported in
                      error reporting packets detected by the probe
                      during this sampling interval."
              ::= { tokenRingMLHistoryEntry 19 }

          tokenRingMLHistoryLostFrameErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of lost frame errors reported in
                      error reporting packets detected by the probe
                      during this sampling interval."
              ::= { tokenRingMLHistoryEntry 20 }

          tokenRingMLHistoryCongestionErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of receive congestion errors
                      reported in error reporting packets detected by
                      the probe during this sampling interval."
              ::= { tokenRingMLHistoryEntry 21 }

          tokenRingMLHistoryFrameCopiedErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frame copied errors reported
                      in error reporting packets detected by the probe
                      during this sampling interval."



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              ::= { tokenRingMLHistoryEntry 22 }

          tokenRingMLHistoryFrequencyErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frequency errors reported in
                      error reporting packets detected by the probe
                      during this sampling interval."
              ::= { tokenRingMLHistoryEntry 23 }

          tokenRingMLHistoryTokenErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of token errors reported in
                      error reporting packets detected by the probe
                      during this sampling interval."
              ::= { tokenRingMLHistoryEntry 24 }

          tokenRingMLHistorySoftErrorReports OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of soft error report frames
                      detected by the probe during this sampling
                      interval."
              ::= { tokenRingMLHistoryEntry 25 }

          tokenRingMLHistoryRingPollEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of ring poll events detected by
                      the probe during this sampling interval."
              ::= { tokenRingMLHistoryEntry 26 }

          tokenRingMLHistoryActiveStations OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The maximum number of active stations on the ring
                      detected by the probe during this sampling



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                      interval."
              ::= { tokenRingMLHistoryEntry 27}


          -- The Token Ring Promiscuous History Group
          --
          -- Implementation of this group is optional.
          -- Implementation of this group requires the implementation
          -- of the historyControl group from RFC1271.

          tokenRingPHistoryTable OBJECT-TYPE
              SYNTAX SEQUENCE OF TokenRingPHistoryEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of promiscuous Token Ring statistics
                      entries."
              ::= { history 4 }

          tokenRingPHistoryEntry OBJECT-TYPE
              SYNTAX TokenRingPHistoryEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of promiscuous statistics kept for a
                      particular Token Ring interface."
              INDEX { tokenRingPHistoryIndex,
                      tokenRingPHistorySampleIndex }
              ::= { tokenRingPHistoryTable 1 }

          -- As an example, an instance of the
          -- tokenRingPHistoryDataPkts object
          -- might be named tokenRingPHistoryDataPkts.1.27

          TokenRingPHistoryEntry ::= SEQUENCE {
              tokenRingPHistoryIndex                          INTEGER,
              tokenRingPHistorySampleIndex                    INTEGER,
              tokenRingPHistoryIntervalStart                  TimeTicks,
              tokenRingPHistoryDropEvents                     Counter,
              tokenRingPHistoryDataOctets                     Counter,
              tokenRingPHistoryDataPkts                       Counter,
              tokenRingPHistoryDataBroadcastPkts              Counter,
              tokenRingPHistoryDataMulticastPkts              Counter,
              tokenRingPHistoryDataPkts18to63Octets           Counter,
              tokenRingPHistoryDataPkts64to127Octets          Counter,
              tokenRingPHistoryDataPkts128to255Octets         Counter,
              tokenRingPHistoryDataPkts256to511Octets         Counter,
              tokenRingPHistoryDataPkts512to1023Octets        Counter,



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              tokenRingPHistoryDataPkts1024to2047Octets       Counter,
              tokenRingPHistoryDataPkts2048to4095Octets       Counter,
              tokenRingPHistoryDataPkts4096to8191Octets       Counter,
              tokenRingPHistoryDataPkts8192to18000Octets      Counter,
              tokenRingPHistoryDataPktsGreaterThan18000Octets Counter
          }

          tokenRingPHistoryIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The history of which this entry is a part.  The
                      history identified by a particular value of this
                      index is the same history as identified by the
                      same value of historyControlIndex."
              ::= { tokenRingPHistoryEntry 1 }

          tokenRingPHistorySampleIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "An index that uniquely identifies the particular
                      sample this entry represents among all samples
                      associated with the same historyControlEntry.
                      This index starts at 1 and increases by one as
                      each new sample is taken."
              ::= { tokenRingPHistoryEntry 2 }

          tokenRingPHistoryIntervalStart OBJECT-TYPE
              SYNTAX TimeTicks
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of sysUpTime at the start of the
                      interval over which this sample was measured.  If
                      the probe keeps track of the time of day, it
                      should start the first sample of the history at a
                      time such that when the next hour of the day
                      begins, a sample is started at that instant.  Note
                      that following this rule may require the probe to
                      delay collecting the first sample of the history,
                      as each sample must be of the same interval.  Also
                      note that the sample which is currently being
                      collected is not accessible in this table until
                      the end of its interval."
              ::= { tokenRingPHistoryEntry 3 }



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          tokenRingPHistoryDropEvents OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of events in which packets were
                      dropped by the probe due to lack of resources
                      during this sampling interval.  Note that this
                      number is not necessarily the number of packets
                      dropped, it is just the number of times this
                      condition has been detected."
              ::= { tokenRingPHistoryEntry 4 }

          tokenRingPHistoryDataOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of octets of data in good frames
                      received on the network (excluding framing bits
                      but including FCS octets) in non-MAC packets
                      during this sampling interval."
              ::= { tokenRingPHistoryEntry 5 }

          tokenRingPHistoryDataPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval."
              ::= { tokenRingPHistoryEntry 6 }

          tokenRingPHistoryDataBroadcastPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were directed
                      to an LLC broadcast address (0xFFFFFFFFFFFF or
                      0xC000FFFFFFFF)."
              ::= { tokenRingPHistoryEntry 7 }

          tokenRingPHistoryDataMulticastPkts OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory



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              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were directed
                      to a local or global multicast or functional
                      address.  Note that this number does not include
                      packets directed to the broadcast address."
              ::= { tokenRingPHistoryEntry 8 }

          tokenRingPHistoryDataPkts18to63Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between 18
                      and 63 octets in length inclusive, excluding
                      framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 9 }

          tokenRingPHistoryDataPkts64to127Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between 64
                      and 127 octets in length inclusive, excluding
                      framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 10 }

          tokenRingPHistoryDataPkts128to255Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between
                      128 and 255 octets in length inclusive, excluding
                      framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 11 }

          tokenRingPHistoryDataPkts256to511Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between



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                      256 and 511 octets in length inclusive, excluding
                      framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 12 }

          tokenRingPHistoryDataPkts512to1023Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between
                      512 and 1023 octets in length inclusive, excluding
                      framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 13 }

          tokenRingPHistoryDataPkts1024to2047Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between
                      1024 and 2047 octets in length inclusive,
                      excluding framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 14 }

          tokenRingPHistoryDataPkts2048to4095Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between
                      2048 and 4095 octets in length inclusive,
                      excluding framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 15 }

          tokenRingPHistoryDataPkts4096to8191Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between
                      4096 and 8191 octets in length inclusive,
                      excluding framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 16 }




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          tokenRingPHistoryDataPkts8192to18000Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were between
                      8192 and 18000 octets in length inclusive,
                      excluding framing bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 17 }

          tokenRingPHistoryDataPktsGreaterThan18000Octets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good non-MAC frames received
                      during this sampling interval that were greater
                      than 18000 octets in length, excluding framing
                      bits but including FCS octets."
              ::= { tokenRingPHistoryEntry 18 }


          -- The Token Ring Ring Station Group
          --
          -- Implementation of this group is optional
          --
          -- Although the ringStationTable stores entries only for
          -- those stations physically attached to the local ring and
          -- the number of stations attached to a ring is limited, a
          -- probe may still need to free resources when resources
          -- grow tight.  In such a situation, it is suggested that
          -- the probe free only inactive stations, and to
          -- first free the stations that have been inactive for the
          -- longest time.

          ringStationControlTable OBJECT-TYPE
              SYNTAX SEQUENCE OF RingStationControlEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of ringStation table control entries."
              ::= { tokenRing 1 }

          ringStationControlEntry OBJECT-TYPE
              SYNTAX RingStationControlEntry
              ACCESS not-accessible
              STATUS mandatory



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              DESCRIPTION
                      "A list of parameters that set up the discovery of
                      stations on a particular interface and the
                      collection of statistics about these stations."
              INDEX { ringStationControlIfIndex }
              ::= { ringStationControlTable 1 }

          -- As an example, an instance of the
          -- ringStationControlIfIndex object
          -- might be named ringStationControlIfIndex.1

          RingStationControlEntry ::= SEQUENCE {
              ringStationControlIfIndex          INTEGER,
              ringStationControlTableSize        INTEGER,
              ringStationControlActiveStations   INTEGER,
              ringStationControlRingState        INTEGER,
              ringStationControlBeaconSender     MacAddress,
              ringStationControlBeaconNAUN       MacAddress,
              ringStationControlActiveMonitor    MacAddress,
              ringStationControlOrderChanges     Counter,
              ringStationControlOwner            OwnerString,
              ringStationControlStatus           EntryStatus
          }

          ringStationControlIfIndex OBJECT-TYPE
              SYNTAX INTEGER (1..65535)
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies the
                      interface on this remote network monitoring device
                      from which ringStation data is collected.  The
                      interface identified by a particular value of this
                      object is the same interface as identified by the
                      same value of the ifIndex object, defined in MIB-
                      II [3]."
              ::= { ringStationControlEntry 1 }

          ringStationControlTableSize OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The number of ringStationEntries in the
                      ringStationTable associated with this
                      ringStationControlEntry."
              ::= { ringStationControlEntry 2 }




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          ringStationControlActiveStations OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The number of active ringStationEntries in the
                      ringStationTable associated with this
                      ringStationControlEntry."
              ::= { ringStationControlEntry 3 }

          ringStationControlRingState OBJECT-TYPE
              SYNTAX INTEGER {
                  normalOperation(1),
                  ringPurgeState(2),
                  claimTokenState(3),
                  beaconFrameStreamingState(4),
                  beaconBitStreamingState(5),
                  beaconRingSignalLossState(6),
                  beaconSetRecoveryModeState(7)
              }
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The current status of this ring."
              ::= { ringStationControlEntry 4 }

          ringStationControlBeaconSender OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The address of the sender of the last beacon
                      frame received by the probe on this ring.  If no
                      beacon frames have been received, this object
                      shall be equal to six octets of zero."
              ::= { ringStationControlEntry 5 }

          ringStationControlBeaconNAUN OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The address of the NAUN in the last beacon frame
                      received by the probe on this ring.  If no beacon
                      frames have been received, this object shall be
                      equal to six octets of zero."
              ::= { ringStationControlEntry 6 }




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          ringStationControlActiveMonitor OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The address of the Active Monitor on this
                      segment.  If this address is unknown, this object
                      shall be equal to six octets of zero."
              ::= { ringStationControlEntry 7 }

          ringStationControlOrderChanges OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The number of add and delete events in the
                      ringStationOrderTable optionally associated with
                      this ringStationControlEntry."
              ::= { ringStationControlEntry 8 }

          ringStationControlOwner OBJECT-TYPE
              SYNTAX OwnerString
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The entity that configured this entry and is
                      therefore using the resources assigned to it."
              ::= { ringStationControlEntry 9 }

          ringStationControlStatus OBJECT-TYPE
              SYNTAX EntryStatus
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The status of this ringStationControl entry.

                      If this object is not equal to valid(1), all
                      associated entries in the ringStationTable shall
                      be deleted by the agent."
              ::= { ringStationControlEntry 10 }

          ringStationTable OBJECT-TYPE
              SYNTAX SEQUENCE OF RingStationEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of ring station entries.  An entry will
                      exist for each station that is now or has



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                      previously been detected as physically present on
                      this ring."
               ::= { tokenRing 2 }

          ringStationEntry OBJECT-TYPE
              SYNTAX RingStationEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of statistics for a particular
                      station that has been discovered on a ring
                      monitored by this device."
              INDEX { ringStationIfIndex, ringStationMacAddress }
              ::= { ringStationTable 1 }

          -- As an example, an instance of the
          -- ringStationStationStatus object might be named
          -- ringStationStationStatus.1.16.0.90.0.64.131

          RingStationEntry ::= SEQUENCE {
              ringStationIfIndex                INTEGER,
              ringStationMacAddress             MacAddress,
              ringStationLastNAUN               MacAddress,
              ringStationStationStatus          INTEGER,
              ringStationLastEnterTime          TimeTicks,
              ringStationLastExitTime           TimeTicks,
              ringStationDuplicateAddresses     Counter,
              ringStationInLineErrors           Counter,
              ringStationOutLineErrors          Counter,
              ringStationInternalErrors         Counter,
              ringStationInBurstErrors          Counter,
              ringStationOutBurstErrors         Counter,
              ringStationACErrors               Counter,
              ringStationAbortErrors            Counter,
              ringStationLostFrameErrors        Counter,
              ringStationCongestionErrors       Counter,
              ringStationFrameCopiedErrors      Counter,
              ringStationFrequencyErrors        Counter,
              ringStationTokenErrors            Counter,
              ringStationInBeaconErrors         Counter,
              ringStationOutBeaconErrors        Counter,
              ringStationInsertions             Counter
          }

          ringStationIfIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory



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              DESCRIPTION
                      "The value of this object uniquely identifies the
                      interface on this remote network monitoring device
                      on which this station was detected.  The interface
                      identified by a particular value of this object is
                      the same interface as identified by the same value
                      of the ifIndex object, defined in MIB-II [3]."
              ::= { ringStationEntry 1 }

          ringStationMacAddress OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The physical address of this station."
              ::= { ringStationEntry 2 }

          ringStationLastNAUN OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The physical address of last known NAUN of this
                      station."
              ::= { ringStationEntry 3 }

          ringStationStationStatus OBJECT-TYPE
              SYNTAX INTEGER {
                  active(1),    -- actively participating in ring poll.
                  inactive(2),  -- Not participating in ring poll
                  forcedRemoval(3) -- Forced off ring by network
                                   -- management.
              }
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The status of this station on the ring."
              ::= { ringStationEntry 4 }

          ringStationLastEnterTime OBJECT-TYPE
              SYNTAX TimeTicks
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of sysUpTime at the time this station
                      last entered the ring.  If the time is unknown,
                      this value shall be zero."
              ::= { ringStationEntry 5 }



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          ringStationLastExitTime OBJECT-TYPE
              SYNTAX TimeTicks
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of sysUpTime at the time the probe
                      detected that this station last exited the ring.
                      If the time is unknown, this value shall be zero."
              ::= { ringStationEntry 6 }

          ringStationDuplicateAddresses OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The number of times this station experienced a
                      duplicate address error."
              ::= { ringStationEntry 7 }

          ringStationInLineErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of line errors reported by this
                      station in error reporting packets detected by the
                      probe."
              ::= { ringStationEntry 8 }

          ringStationOutLineErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of line errors reported in error
                      reporting packets sent by the nearest active
                      downstream neighbor of this station and detected
                      by the probe."
              ::= { ringStationEntry 9 }

          ringStationInternalErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of adapter internal errors
                      reported by this station in error reporting
                      packets detected by the probe."



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              ::= { ringStationEntry 10 }

          ringStationInBurstErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of burst errors reported by this
                      station in error reporting packets detected by the
                      probe."
              ::= { ringStationEntry 11 }

          ringStationOutBurstErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of burst errors reported in
                      error reporting packets sent by the nearest active
                      downstream neighbor of this station and detected
                      by the probe."
              ::= { ringStationEntry 12 }

          ringStationACErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of AC (Address Copied) errors
                      reported in error reporting packets sent by the
                      nearest active downstream neighbor of this station
                      and detected by the probe."
              ::= { ringStationEntry 13 }

          ringStationAbortErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of abort delimiters reported by
                      this station in error reporting packets detected
                      by the probe."
              ::= { ringStationEntry 14 }

          ringStationLostFrameErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory



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              DESCRIPTION
                      "The total number of lost frame errors reported by
                      this station in error reporting packets detected
                      by the probe."
              ::= { ringStationEntry 15 }

          ringStationCongestionErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of receive congestion errors
                      reported by this station in error reporting
                      packets detected by the probe."
              ::= { ringStationEntry 16 }

          ringStationFrameCopiedErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frame copied errors reported
                      by this station in error reporting packets
                      detected by the probe."
              ::= { ringStationEntry 17 }

          ringStationFrequencyErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frequency errors reported by
                      this station in error reporting packets detected
                      by the probe."
              ::= { ringStationEntry 18 }

          ringStationTokenErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of token errors reported by this
                      station in error reporting frames detected by the
                      probe."
              ::= { ringStationEntry 19 }

          ringStationInBeaconErrors OBJECT-TYPE
              SYNTAX Counter



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              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of beacon frames sent by this
                      station and detected by the probe."
              ::= { ringStationEntry 20 }

          ringStationOutBeaconErrors OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of beacon frames detected by the
                      probe that name this station as the NAUN."
              ::= { ringStationEntry 21 }

          ringStationInsertions OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The number of times the probe detected this
                      station inserting onto the ring."
              ::= { ringStationEntry 22 }


          -- The Token Ring Ring Station Order Group
          --
          -- Implementation of this group is optional
          --

          -- The ringStationOrderTable

          ringStationOrderTable OBJECT-TYPE
              SYNTAX SEQUENCE OF RingStationOrderEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of ring station entries for stations in
                      the ring poll, ordered by their ring-order."
              ::= { tokenRing 3 }

          ringStationOrderEntry OBJECT-TYPE
              SYNTAX RingStationOrderEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of statistics for a particular



Waldbusser                                                     [Page 41]

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                      station that is active on a ring monitored by this
                      device.  This table will contain information for
                      every interface that has a
                      ringStationControlStatus equal to valid."
              INDEX { ringStationOrderIfIndex,
                      ringStationOrderOrderIndex }
              ::= { ringStationOrderTable 1 }

          -- As an example, an instance of the
          -- ringStationOrderMacAddress object might be named
          -- ringStationOrderMacAddress.1.14

          RingStationOrderEntry ::= SEQUENCE {
              ringStationOrderIfIndex             INTEGER,
              ringStationOrderOrderIndex          INTEGER,
              ringStationOrderMacAddress          MacAddress
          }

          ringStationOrderIfIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies the
                      interface on this remote network monitoring device
                      on which this station was detected.  The interface
                      identified by a particular value of this object is
                      the same interface as identified by the same value
                      of the ifIndex object, defined in MIB-II [3]."
              ::= { ringStationOrderEntry 1 }

          ringStationOrderOrderIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "This index denotes the location of this station
                      with respect to other stations on the ring.  This
                      index is one more than the number of hops
                      downstream that this station is from the rmon
                      probe.  The rmon probe itself gets the value one."
              ::= { ringStationOrderEntry 2 }

          ringStationOrderMacAddress OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION



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RFC 1513           Token Ring Extensions to RMON MIB      September 1993


                      "The physical address of this station."
              ::= { ringStationOrderEntry 3 }


          -- The Token Ring Ring Station Config Group
          --
          -- Implementation of this group is optional.
          -- The ring station config group manages token ring nodes
          -- through active means.

          ringStationConfigControlTable OBJECT-TYPE
              SYNTAX SEQUENCE OF RingStationConfigControlEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of ring station configuration control
                      entries."
              ::= { tokenRing 4 }

          ringStationConfigControlEntry OBJECT-TYPE
              SYNTAX RingStationConfigControlEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "This entry controls active management of stations
                      by the probe.  One entry exists in this table for
                      each active station in the ringStationTable."
              INDEX { ringStationConfigControlIfIndex,
                      ringStationConfigControlMacAddress }
              ::= { ringStationConfigControlTable 1 }

          -- As an example, an instance of the
          -- ringStationConfigControlRemove object might be named
          -- ringStationConfigControlRemove.1.16.0.90.0.64.131

          RingStationConfigControlEntry ::= SEQUENCE {
              ringStationConfigControlIfIndex         INTEGER,
              ringStationConfigControlMacAddress      MacAddress,
              ringStationConfigControlRemove          INTEGER,
              ringStationConfigControlUpdateStats     INTEGER
          }

          ringStationConfigControlIfIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies the



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                      interface on this remote network monitoring device
                      on which this station was detected.  The interface
                      identified by a particular value of this object is
                      the same interface as identified by the same value
                      of the ifIndex object, defined in MIB-II [3]."
              ::= { ringStationConfigControlEntry 1 }

          ringStationConfigControlMacAddress OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The physical address of this station."
              ::= { ringStationConfigControlEntry 2 }

          ringStationConfigControlRemove OBJECT-TYPE
              SYNTAX INTEGER {
                  stable(1),
                  removing(2)
              }
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "Setting this object to `removing(2)' causes a
                      Remove Station MAC frame to be sent.  The agent
                      will set this object to `stable(1)' after
                      processing the request."
              ::= { ringStationConfigControlEntry 3 }

          ringStationConfigControlUpdateStats OBJECT-TYPE
              SYNTAX INTEGER {
                  stable(1),
                  updating(2)
              }
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "Setting this object to `updating(2)' causes the
                      configuration information associate with this
                      entry to be updated.  The agent will set this
                      object to `stable(1)' after processing the
                      request."
              ::= { ringStationConfigControlEntry 4 }








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          --  The ringStationConfig Table
          --
          --  Entries exist in this table after an active
          --  configuration query has completed successfully for
          --  a station.  This query is initiated by the associated
          --  ringStationConfigControlUpdateStats variable.

          ringStationConfigTable OBJECT-TYPE
              SYNTAX SEQUENCE OF RingStationConfigEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of configuration entries for stations on a
                      ring monitored by this probe."
              ::= { tokenRing 5 }

          ringStationConfigEntry OBJECT-TYPE
              SYNTAX RingStationConfigEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of statistics for a particular
                      station that has been discovered on a ring
                      monitored by this probe."
              INDEX { ringStationConfigIfIndex,
                      ringStationConfigMacAddress }
              ::= { ringStationConfigTable 1 }

          -- As an example, an instance of the
          -- ringStationConfigLocation object might be named
          -- ringStationConfigLocation.1.16.0.90.0.64.131

          RingStationConfigEntry ::= SEQUENCE {
              ringStationConfigIfIndex            INTEGER,
              ringStationConfigMacAddress         MacAddress,
              ringStationConfigUpdateTime         TimeTicks,
              ringStationConfigLocation           OCTET STRING,
              ringStationConfigMicrocode          OCTET STRING,
              ringStationConfigGroupAddress       OCTET STRING,
              ringStationConfigFunctionalAddress  OCTET STRING
          }

          ringStationConfigIfIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies the



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                      interface on this remote network monitoring device
                      on which this station was detected.  The interface
                      identified by a particular value of this object is
                      the same interface as identified by the same value
                      of the ifIndex object, defined in MIB-II [3]."
              ::= { ringStationConfigEntry 1 }

          ringStationConfigMacAddress OBJECT-TYPE
              SYNTAX MacAddress
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The physical address of this station."
              ::= { ringStationConfigEntry 2 }

          ringStationConfigUpdateTime OBJECT-TYPE
              SYNTAX TimeTicks
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of sysUpTime at the time this
                      configuration information was last updated
                      (completely)."
              ::= { ringStationConfigEntry 3 }

          ringStationConfigLocation OBJECT-TYPE
              SYNTAX OCTET STRING (SIZE(4))
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The assigned physical location of this station."
              ::= { ringStationConfigEntry 4 }

          ringStationConfigMicrocode OBJECT-TYPE
              SYNTAX OCTET STRING (SIZE(10))
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The microcode EC level of this station."
              ::= { ringStationConfigEntry 5 }

          ringStationConfigGroupAddress OBJECT-TYPE
              SYNTAX OCTET STRING (SIZE(4))
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The low-order 4 octets of the group address
                      recognized by this station."



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RFC 1513           Token Ring Extensions to RMON MIB      September 1993


              ::= { ringStationConfigEntry 6 }

          ringStationConfigFunctionalAddress OBJECT-TYPE
              SYNTAX OCTET STRING (SIZE(4))
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "the functional addresses recognized by this
                      station."
              ::= { ringStationConfigEntry 7 }


          -- The Token Ring Source Routing group
          --
          -- Implementation of this group is optional.
          -- The data in this group is collected from the source
          -- routing information potentially present in any token ring
          -- packet.  This information will be valid only in a pure
          -- source route bridging environment.  In a transparent
          -- bridging or a mixed bridging environment, this
          -- information may not be accurate.

          sourceRoutingStatsTable OBJECT-TYPE
              SYNTAX SEQUENCE OF SourceRoutingStatsEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A list of source routing statistics entries."
              ::= { tokenRing 6 }

          sourceRoutingStatsEntry OBJECT-TYPE
              SYNTAX SourceRoutingStatsEntry
              ACCESS not-accessible
              STATUS mandatory
              DESCRIPTION
                      "A collection of source routing statistics kept
                      for a particular Token Ring interface."
              INDEX { sourceRoutingStatsIfIndex }
              ::= { sourceRoutingStatsTable 1 }

          -- As an example, an instance of the
          -- sourceRoutingStatsInFrames object might be named
          -- sourceRoutingStatsInFrames.1

          SourceRoutingStatsEntry ::= SEQUENCE {
              sourceRoutingStatsIfIndex                     INTEGER,
              sourceRoutingStatsRingNumber                  INTEGER,
              sourceRoutingStatsInFrames                    Counter,



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RFC 1513           Token Ring Extensions to RMON MIB      September 1993


                  -- in to our net

              sourceRoutingStatsOutFrames                   Counter,
                  -- out from our net

              sourceRoutingStatsThroughFrames               Counter,
                  -- through our net

              sourceRoutingStatsAllRoutesBroadcastFrames    Counter,
              sourceRoutingStatsSingleRouteBroadcastFrames  Counter,
              sourceRoutingStatsInOctets                    Counter,
              sourceRoutingStatsOutOctets                   Counter,
              sourceRoutingStatsThroughOctets               Counter,
              sourceRoutingStatsAllRoutesBroadcastOctets    Counter,
              sourceRoutingStatsSingleRoutesBroadcastOctets Counter,
              sourceRoutingStatsLocalLLCFrames              Counter,
              sourceRoutingStats1HopFrames                  Counter,
              sourceRoutingStats2HopsFrames                 Counter,
              sourceRoutingStats3HopsFrames                 Counter,
              sourceRoutingStats4HopsFrames                 Counter,
              sourceRoutingStats5HopsFrames                 Counter,
              sourceRoutingStats6HopsFrames                 Counter,
              sourceRoutingStats7HopsFrames                 Counter,
              sourceRoutingStats8HopsFrames                 Counter,
              sourceRoutingStatsMoreThan8HopsFrames         Counter,
              sourceRoutingStatsOwner                       OwnerString,
              sourceRoutingStatsStatus                      EntryStatus
          }

          sourceRoutingStatsIfIndex OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The value of this object uniquely identifies the
                      interface on this remote network monitoring device
                      on which source routing statistics will be
                      detected.  The interface identified by a
                      particular value of this object is the same
                      interface as identified by the same value of the
                      ifIndex object, defined in MIB-II [3]."
              ::= { sourceRoutingStatsEntry 1 }

          sourceRoutingStatsRingNumber OBJECT-TYPE
              SYNTAX INTEGER
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION



Waldbusser                                                     [Page 48]

RFC 1513           Token Ring Extensions to RMON MIB      September 1993


                      "The ring number of the ring monitored by this
                      entry.  When any object in this entry is created,
                      the probe will attempt to discover the ring
                      number.  Only after the ring number is discovered
                      will this object be created.  After creating an
                      object in this entry, the management station
                      should poll this object to detect when it is
                      created.  Only after this object is created can
                      the management station set the
                      sourceRoutingStatsStatus entry to valid(1)."
              ::= { sourceRoutingStatsEntry 2 }

          sourceRoutingStatsInFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The count of frames sent into this ring from
                      another ring."
              ::= { sourceRoutingStatsEntry 3 }

          sourceRoutingStatsOutFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The count of frames sent from this ring to
                      another ring."
              ::= { sourceRoutingStatsEntry 4 }

          sourceRoutingStatsThroughFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The count of frames sent from another ring,
                      through this ring, to another ring."
              ::= { sourceRoutingStatsEntry 5 }

          sourceRoutingStatsAllRoutesBroadcastFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good frames received that
                      were All Routes Broadcast."
              ::= { sourceRoutingStatsEntry 6 }




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          sourceRoutingStatsSingleRouteBroadcastFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of good frames received that
                      were Single Route Broadcast."
              ::= { sourceRoutingStatsEntry 7 }

          sourceRoutingStatsInOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The count of octets in good frames sent into this
                      ring from another ring."
              ::= { sourceRoutingStatsEntry 8 }

          sourceRoutingStatsOutOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The count of octets in good frames sent from this
                      ring to another ring."
              ::= { sourceRoutingStatsEntry 9 }

          sourceRoutingStatsThroughOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The count of octets in good frames sent another
                      ring, through this ring, to another ring."
              ::= { sourceRoutingStatsEntry 10 }

          sourceRoutingStatsAllRoutesBroadcastOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of octets in good frames
                      received that were All Routes Broadcast."
              ::= { sourceRoutingStatsEntry 11 }

          sourceRoutingStatsSingleRoutesBroadcastOctets OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only



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              STATUS mandatory
              DESCRIPTION
                      "The total number of octets in good frames
                      received that were Single Route Broadcast."
              ::= { sourceRoutingStatsEntry 12 }

          sourceRoutingStatsLocalLLCFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received who had no
                      RIF field (or had a RIF field that only included
                      the local ring's number) and were not All Route
                      Broadcast Frames."
              ::= { sourceRoutingStatsEntry 13 }

          sourceRoutingStats1HopFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 1 hop, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 14 }

          sourceRoutingStats2HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 2 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 15 }

          sourceRoutingStats3HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION



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                      "The total number of frames received whose route
                      had 3 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 16 }

          sourceRoutingStats4HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 4 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 17 }

          sourceRoutingStats5HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 5 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 18 }

          sourceRoutingStats6HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 6 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 19 }

          sourceRoutingStats7HopsFrames OBJECT-TYPE



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              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 7 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 20 }

          sourceRoutingStats8HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had 8 hops, were not All Route Broadcast Frames,
                      and whose source or destination were on this ring
                      (i.e. frames that had a RIF field and had this
                      ring number in the first or last entry of the RIF
                      field)."
              ::= { sourceRoutingStatsEntry 21 }

          sourceRoutingStatsMoreThan8HopsFrames OBJECT-TYPE
              SYNTAX Counter
              ACCESS read-only
              STATUS mandatory
              DESCRIPTION
                      "The total number of frames received whose route
                      had more than 8 hops, were not All Route Broadcast
                      Frames, and whose source or destination were on
                      this ring (i.e. frames that had a RIF field and
                      had this ring number in the first or last entry of
                      the RIF field)."
              ::= { sourceRoutingStatsEntry 22 }

          sourceRoutingStatsOwner OBJECT-TYPE
              SYNTAX OwnerString
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The entity that configured this entry and is
                      therefore using the resources assigned to it."
              ::= { sourceRoutingStatsEntry 23 }

          sourceRoutingStatsStatus OBJECT-TYPE



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              SYNTAX EntryStatus
              ACCESS read-write
              STATUS mandatory
              DESCRIPTION
                      "The status of this sourceRoutingStats entry."
              ::= { sourceRoutingStatsEntry 24 }

          END

6.  References

   [1]  Rose M., and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based internets", STD 16, RFC
        1155, Performance Systems International, Hughes LAN Systems, May
        1990.

   [2]  Rose, M., and K. McCloghrie, Editors, "Concise MIB Definitions",
        STD 16, RFC 1212, Performance Systems International, Hughes LAN
        Systems, March 1991.

   [3]  McCloghrie K., and M. Rose, Editors, "Management Information
        Base for Network Management of TCP/IP-based internets", STD 17,
        RFC 1213, Performance Systems International, March 1991.

   [4]  Case, J., Fedor, M., Schoffstall, M., and J. Davin, "Simple
        Network Management Protocol", STD 15, RFC 1157, SNMP Research,
        Performance Systems International, Performance Systems
        International, MIT Laboratory for Computer Science, May 1990.

   [5]  Information processing systems - Open Systems Interconnection -
        Specification of Abstract Syntax Notation One (ASN.1),
        International Organization for Standardization.  International
        Standard 8824, December, 1987.

   [6]  Waldbusser, S., "Remote Network Monitoring Management
        Information Base",  RFC 1271, CMU, November 1991.

   [7]  Token Ring Access Method and Physical Layer Specifications,
        Institute of Electrical and Electronic Engineers, IEEE Standard
        802.5-1989, 1989.











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7.  Acknowledgments

   This document was produced by the Token Ring RMON MIB working group.

   In addition, the author gratefully acknowledges the comments of the
   following individuals:

         Andrew Bierman      Synoptics
         Steve Bostock       Novell
         Gary Ellis          Hewlett-Packard
         Mike Erlinger       Aerospace Corporation
         Robert Graham       Protools
         Stephen Grau        Novell
         Carl Hayssen        Ungermann-Bass
         Jeff Hughes         Hewlett-Packard
         Robin Iddon         AXON Networks
         Ken Kutzler         Synoptics
         To-Choi Lau         Novell
         Carl Madison        Startek
         Keith McCloghrie    Hughes Lan Systems
         Rohit Mital         Protools
         Keith Schomburg     IBM
         Marshall Rose       Dover Beach Consulting
         Mark Therieau       Microcom
         Mark van der Pol    Hughes Lan Systems
         Brian Wyld          Consultant

8.  Security Considerations

   Security issues are not discussed in this memo.

9.  Author's Address

   Steven Waldbusser
   Carnegie Mellon University
   4910 Forbes Ave.
   Pittsburgh, PA 15213

   Phone: (412) 268-6628
   EMail: waldbusser@cmu.edu











Waldbusser                                                     [Page 55]
