System information

Configuring RIP
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Overview
This chapter describes how to configure the Routing Information Protocol (RIP) for
the BSR 64000™:
• About RIP
• Enabling RIP
• Specifying a RIP Version
• Enabling or Disabling Split Horizon
• Enabling Route Summarization
• Applying an Offset List
• Enabling RIP Authentication
• Configuring Interpacket Delay
• Configuring Timers
• Configuring a Passive Interface for RIP
• Redistributing Routes into RIP
• Gathering RIP Information
About RIP
Routing Information Protocol (RIP) is an Interior Gateway Protocol (IGP) that uses
distance-vector routing to measure the shortest path between two points on a network.
Distance-vector routing requires that each router inform its neighbors of its routing
table. For each network path, the receiving router selects the neighbor advertising the
lowest cost, and adds this entry to its routing table for re-advertisement. A host using
RIP should have interfaces to one or more networks, which are known as directly
connected networks.
RIP uses broadcast User Datagram Protocol (UDP) data packets to exchange routing
information. RIP listens for these broadcasts on UDP port 520. The BSR uses the
advertising process to send routing information updates every 30 seconds. If a router
does not receive an update from another router for 180 seconds, it marks the routes
served by the non-updating router as unusable. If the router does not receive an update
after 300 seconds, it removes all routing table entries for the non-updating router.