H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 154)

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RIP configuration
This chapter includes these sections:
• RIP overview
• RIP configuration task list
• Displaying and maintaining RIP
• RIP configuration examples
• Troubleshooting RIP
NOTE:
•
The term "switch" or "device" in this chapter refers to the switching engine on a WX3000E wireless
switch.
• The WX3000E series comprises WX3024E and WX3010E wireless switches.
• The port numbers in this chapter are for illustration only.
RIP overview
RIP is a simple Interior Gateway Protocol (IGP), mainly used in small-sized networks, such as academic
networks and simple LANs. It is not applicable to complex networks.
RIP is widely used in practical networking because it is easy to implement, configure, and maintain.
RIP working mechanism
Introduction
RIP is a distance vector routing protocol, using UDP packets for exchanging information through port
520.
RIP uses a hop count to measure the distance to a destination. The hop count from a router to a directly
connected network is 0. The hop count from a router to a directly connected router is 1. To limit
convergence time, the RIP metric value ranges from 0 to 15. A metric value of 16 (or greater) is
considered infinite, which means the destination network is unreachable. Because of this, RIP is not
suitable for large-sized networks.
RIP prevents routing loops by implementing the split horizon and poison reverse functions.
RIP routing table
A RIP router has a routing table containing routing entries of all reachable destinations, and each routing
entry contains the following elements:
• Destination address—IP address of a host or a network
• Next hop—IP address of the adjacent router’s interface to reach the destination
• Egress interface—Packet outgoing interface
• Metric—Cost from the local router to the destination