Cabletron Systems CSX100 series User Manual - Rip Options
Configuring Advanced Features 73
Routing Information Protocols (RIP)
You can configure the router to send and receive RIP (Routing Information
Protocol) packet information to and from, respectively, the remote router.
RIP is a protocol used by some routers to exchange IP routing information so
that the local site will ‘learn’ all about the routes beyond the remote router
and the remote router will ‘learn’ all about the local site’s routes.
Note 1: You may not want this to occur in some cases. For example, if you
are connecting to a site outside of your company such as the Internet, you may
want to keep knowledge about your local site’s routes private.
Note 2: With NAT (Network Address Translation) enabled, the local router
cannot send RIP packets to the remote WAN link, but can, however, receive
RIP packets from the remote site.
Default: The default is to restrict sending or receiving IP RIP packets or
default routes. If RIP packets are not allowed to flow on the WAN link, you
must seed the routing table. You can also advertise the remote site’s
existence. The default is to keep the remote site’s existence private.
RIP Options
RIP-1 Compatible
In RIP-1 Compatible mode, the router can broadcast RIP-1 packets and
multicast RIP-2 packets. It can also receive and interpret RIP-1 and RIP-
2 packets.
RIP-1
It is used when exchanging RIP packets when communicating with older
routers that don’t have RIP-2. RIP-1 has the following two deficiencies:
Since it uses broadcast for sending packets, every device on the LAN
must receive and inspect every packet.
RIP-1 has no way of communicating a subnet mask. This deficiency can
lead to misinterpretation of IP networks by the router receiving the RIP-1
packets.
RIP-2
RIP-2 lets the routers exchange subnet mask information in the packets.