Subject: (Fwd) 28000 DVMRP Routes on the MBONE

From: "Ken Vescovi" <[email-masked]>
Date: Tue, 31 Dec 1996 14:03:05 -0500

On Tue Dec 31,  7:42am
Douglas A. Junkins wrote:

>
> It appears that someone is injecting the unicast routing table into the
> MBONE again.  Here's the top of a "show ip dvmrp route" command from one
> of out multicast routers:
>
> seamr2-gw#sh ip dvmrp route
> DVMRP Routing Table - 28933 entries
>
> All of the routes our coming from our DVMRP feed from University of
> Washington who, in turn, gets their feed from MCI in Sacremento.  UW runs
> mrouted on a box that doesn't have the full routing table so the routes
> are originating somewhere in MCI or beyond
>
> - Doug
>
>  /  Douglas A. Junkins    |   Network Engineering        \
> /   Network Engineer      |   NorthWestNet                \
> \   [email-masked]     |   Bellevue, Washington, USA   /
>  \  (206)649-7419         |                              /
>

---End of forwarded mail from Doug Junkins <[email-masked]>

I agree.  Below is a partial response from the system log of our 7507 router,
which subsequently crashed from the overload of routes. We shut down our tunnel
to MCI.

Dec 31 06:07:20 1X:fr-out 4079: %DVMRP-1-ROUTEHOG: Receiving 32660 routes from
204.70.114.29 (Tunnel0) in the last 00:01:05
Dec 31 06:07:39 1X:fr-out 4080: %PIM-1-INVALID_RP_REG: Received Register from
138.39.5.215 for 224.2.0.1, not willing to be RP
Dec 31 06:07:59 2X:147.160.31.1 77: %SYS-2-MALLOCFAIL: Memory allocation of 104
bytes failed from 0x6036277C, pool Processor, alignment 0
Dec 31 06:08:00 2X:147.160.31.1 78: -Process= "IGMP Input", ipl= 0, pid= 52
Dec 31 06:08:00 2X:147.160.31.1 79: -Traceback= 6011C4C0 6011D9FC 60362784
60362674 6035DD10 601233C0 601233AC
Dec 31 06:08:25 1X:fr-out 4081: %DVMRP-1-ROUTEHOG: Receiving 39089 routes from
204.70.114.29 (Tunnel0) in the last 00:01:05

I have notified [email-masked] of the situation.

Ken

-- 

Ken Vescovi
Senior Network Engineer
Concurrent Technologies Corporation
1450 Scalp Ave
Johnstown, PA 15904			ph 814.269.2687