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422 CHAPTER 28: CONFIGURING RIP
RIP - Unicast
Configuration
Example
RIP is a broadcast protocol so it can only exchange routing information with
non-broadcasting networks in unicast mode. This example shows how to
configure RIP message unicasting.
Router A connects Router B and Router C with serial lines in non-broadcasting
networks. Router A (192.1.1.2) only wants to send the routing updating
information to the adjacent Router B (192.1.1.2) without sending the information
to Router C.
Figure 145 Networking diagram of configuring the RIP unicast
To configure RIP unicast:
1 Configure RIP on Router A:
[RouterA] rip
[RouterA-rip] network 192.1.1.0
2 Configure Router A's unicast peer to be Router B.
[RouterA-rip] peer 192.1.1.2
3 Configure serial interface Serial 0
[RouterA-rip] interface serial 0
[RouterA-Serial0] ip address 192.1.1.1 255.255.255.0
Troubleshooting RIP No updating messages can be received when the physical connection works well.
This may have the following cause:
■ RIP is not running on the corresponding interface (maybe the undo rip work
command has been executed), or this interface is not included with the
network command. Multicasting has been configured on the opposite router
(perhaps
rip version 2 multicast command has been executed), but not
configured on the local router.
Router A
Router B
Router C
RouterA unicasts the
upgraded routing
information to RouterB
s0 192.1.1.1
s0 192.1.1.2