=head1 NAME

fs setclientaddrs - Sets the client interfaces to register with the File Server

=head1 SYNOPSIS

B<fs setclientaddrs> [B<-address> <I<client network interfaces>>+] [B<-help>]

B<fs setcl> [B<-a> <I<client network interfaces>>+] [B<-h>]

B<fs sc> [B<-a> <I<client network interfaces>>+] [B<-h>]

=head1 DESCRIPTION

The B<fs setclientaddrs> command defines the IP addresses of the
interfaces that the local Cache Manager registers with a File Server when
first establishing a connection to it.

The File Server uses the addresses when it initiates a remote procedure
call (RPC) to the Cache Manager (as opposed to responding to an RPC sent
by the Cache Manager). There are two common circumstances in which the
File Server initiates RPCs: when it breaks callbacks and when it pings the
client machine to verify that the Cache Manager is still accessible.

The list of interfaces specified with this command replaces the list that
the Cache Manager constructs and records in kernel memory as it
initializes. At that time, if the file F</usr/vice/etc/NetInfo> exists on
the client machine's local disk, the Cache Manager uses its contents as
the basis for the list of interfaces addresses. If the file does not
exist, the Cache Manager instead uses the network interfaces configured
with the operating system. It then removes from the list any address
included in the local F</usr/vice/etc/NetRestrict> file. It records the
final list in kernel memory. (An administrator must create the F<NetInfo>
and F<NetRestrict> files; there are no default versions of them.)

If an RPC to that interface fails, the File Server simultaneously sends
RPCs to all of the other interfaces in the list, to learn which of them
are still available. Whichever interface replies first is the one to which
the File Server then sends pings and RPCs to break callbacks.

To list the interfaces that the Cache Manager is currently registering
with File Servers, use the B<fs getclientaddrs> command.

=head1 CAUTIONS

The list specified with this command persists in kernel memory only until
the client machine reboots. To preserve it across reboots, either list the
interfaces in the local F</usr/vice/etc/NetInfo> file, or place the
appropriate B<fs setclientaddrs> command in the machine's AFS
initialization script.

Changes made with this command do not propagate automatically to File
Servers to which the Cache Manager has already established a
connection. To force such File Servers to use the revised list, either
reboot each file server machine, or change the F<NetInfo> file and reboot
the client machine.

The fs command interpreter verifies that each of the addresses specified
as a value for the B<-address> argument is actually configured with the
operating system on the client machine. If it is not, the command fails
with an error message that marks the address as a C<Nonexistent
interface>.

=head1 OPTIONS

=over 4

=item B<-address> <I<client network interfaces>>+

Specifies each IP address to place in the list of interfaces, in dotted
decimal format. Hostnames are not acceptable. Separate each address with
one or more spaces.

=item B<-help>

Prints the online help for this command. All other valid options are
ignored.

=back

=head1 OUTPUT

The message

   Adding <interface>

confirms that each new interface was added to the Cache Manager's
list. The address appears in hexadecimal format to match the notation used
in the File Server log, F</usr/afs/logs/FileLog>.

=head1 EXAMPLES

The following example sets the two interfaces that the Cache Manager
registers with File Servers.

   % fs setclientaddrs 191.255.105.68 191.255.108.84
   Adding 0xbfff6944
   Adding 0xbfff6c54

=head1 PRIVILEGE REQUIRED

The issuer must be logged in as the local superuser root.

=head1 SEE ALSO

L<NetInfo(5)>,
L<NetRestrict(5)>,
L<fileserver(8)>,
L<fs_getclientaddrs(1)>

=head1 COPYRIGHT

IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

This documentation is covered by the IBM Public License Version 1.0.  It was
converted from HTML to POD by software written by Chas Williams and Russ
Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.
