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• Authentication Key – Specifies the key to use for authenticating RIPv2 packets.
For authentication to function properly, both the sending and receiving interface
must use the same password. (Range: 1-16 characters, case sensitive)
Web - Click Routing Protocol, RIP, Interface Settings. Select the RIP protocol
message types that will be received and sent, the method used to provide faster
convergence and prevent loopback (i.e., prevent instability in the network topology),
and the authentication option and corresponding password. Then click Apply.
Figure 3-129 RIP Interface Settings
CLI - This example sets the receive version to accept both RIPv1 or RIPv2
messages, the send mode to RIPv1 compatible (i.e., called v2-broadcast in the
CLI),
sets the method of preventing instability in the network topology to Split Horizon,
enables authentication via a simple password (i.e., called text mode in the CLI).
Console(config)#interface vlan 1 4-149
Console(config-if)#ip rip receive version 1 2 4-253
Console(config-if)#ip rip send version v2-broadcast 4-254
Console(config-if)#ip split-horizon 4-255
Console(config-if)#ip rip authentication mode text 4-256
Console(config-if)#ip rip authentication key mighty 4-255
Console#