CISCO IOS in a Nutshell

Name

ip rip authentication — interface

Synopsis

ip rip authentication key-chain name
no ip rip authentication key-chain name

ip rip authentication mode {md5 | text}
no ip rip authentication mode {md5 | text}

Configures

RIP route authentication

Default

Default mode is clear text

Description

This command specifies a key chain to be used for authentication of RIP routing updates. name is the name of the key chain to be used. Once the key chain is applied, the interface expects to authenticate any incoming RIPv2 routes. The key chain must be defined separately with the key command.

The mode version of this command specifies the authentication mode for an interface: either text (clear text) or md5.

Example

The following commands specify that RIP routes should be authenticated using MD5 encryption with the key chain defined in group1:

interface ethernet 1
  ip rip authentication key-chain group1
  ip rip authentication mode md5
!
key chain group1
   key 1
   key-string authme1
   key 2
   key-string authme2