Installing and Administering Internet Services

Chapter 8 251
Configuring gated
Configuring the RIP Protocol
version 1 specifies that RIP version 1 (as defined in RFC 1058) packets
are sent; RIP version 2 packets (defined in RFC 1388) are sent only in
response to a version 2 poll packet. version 2 specifies that RIP version
2 packets are sent to the RIP multicast address or to the broadcast
addresses. You can specify how the packets are sent with the multicast
or broadcast clauses. version 2 multicast means you want to send
version 2 packets (containing subnet mask information). version 2
broadcast means you want to send version 1-compatible packets. If
you do not specify a version, version 1 is assumed.
[secondary] authentication [none|[simple|md5] password]
specifies the authentication type to use for RIP version 2 packets (it is
ignored for version 1 packets). secondary indicates that the secondary
authentication is being defined; otherwise, the primary authentication is
being defined. If authentication consisting of only a password is required,
specify simple password or just password (where password is a quoted
string of 0 - 16 characters). If the required authentication consists of a
key that was created with the MD5 algorithm, specify md5. The default is
none. Note that if no authentication clause is specified, the default is
primary authentication of none and no secondary authentication.
trustedgateways specifies a list of routers that provide valid RIP
routing information; routing packets from other routers are ignored.
Default: all routers on the attached network(s).
sourcegateways specifies routers to which RIP routing packets may be
sent. If the nobroadcast clause is specified, routing updates are sent
only to routers listed in the sourcegateways clause.
traceoptions enables tracing for the RIP protocol. See “Specifying
Tracing Options” on page 287.
Controlling RIP Traffic
This section describes configuration options for RIP routing information
sent out by gated from the node. Use these options to hide all or part of
your network from other networks or to limit network traffic.
Two options for limiting RIP routing information exported by gated are
in the RIP protocol definition in the /etc/gated.conf file:
• The noripout clause in the interface definition tells gated not to
send any RIP information through the listed interfaces.