You can define multiple MD5 authentication keys to RIPv2. This feature supports adding of MD5 keys with their start-time. RIPv2 packets are transmitted with MD5 authentication using the first configured key. RIPv2 authentication switches to the next key based on its configured respective key start-time. This provides auto key switching without user intervention to change the MD5 keys as in the case of having only one MD5 key.
To enable multiple MD5 support for RIPv2, include the authentication-selective-md5 statement at the [edit protocols rip] hierarchy level.
