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1202 Configuring RIP
What Is Split Horizon?
RIP uses a technique called split horizon to avoid problems caused by
including routes in updates sent to the router from which the route was
originally learned. With simple split horizon, a route is not included in
updates sent on the interface on which it was learned. In split horizon with
poison reverse, a route is included in updates sent on the interface where it
was learned, but the metric is set to infinity.
What RIP Versions Are Supported?
There are two versions of RIP:
• RIP-1 defined in RFC 1058
– Routes are specified by IP destination network and hop count
– The routing table is broadcast to all stations on the attached network
• RIP-2 defined in RFC 1723
– Route specification is extended to include subnet mask and gateway
– The routing table is sent to a multicast address, reducing network
traffic
– An authentication method is used for security
The Dell Networking series switches support both versions of RIP. You may
configure a given port:
• To receive packets in either or both formats
• To transmit packets formatted for RIP-1 or RIP-2 or to send RIP-2 packets
to the RIP-1 broadcast address
• To prevent any RIP packets from being received
• To prevent any RIP packets from being transmitted