Configure Authentication Password for VRRP Tickets

See the first figure in VRRP Topology for the topology in this example. You can configure VRRP text authentication to authenticate VRRP packets. An advertisement packet will get discarded if the authentication key in the packet does not match with the locally configured value.

1. In switch 1 and in switch 2, configure the authentication password or key as text1.

   SEFOS# configure terminal
   SEFOS(config)# router vrrp
   SEFOS(config-vrrp)# interface vlan 2
   SEFOS(config-vrrp-if)# vrrp 1 text-authentication text1
   SEFOS(config-vrrp-if)# end

2. View the authentication key configured in switch 1.

   SEFOS# show vrrp interface vlan 2 detail
   vlan2  - vrID 1
   ---------------
   State is Master
   Virtual IP address is 12.0.0.5
   Virtual MAC address is 00:00:5e:00:01:01
   Master router is 12.0.0.5
   Associated IpAddresses :
   ----------------------
   12.0.0.5
   12.0.0.6
   Advertise time is 1 secs
   Current priority is 200
   Configured priority is 200, may preempt
   Configured Authentication
   Authentication key is text1
   Accept Mode Disabled

3. View the authentication key configured in switch 2.

   SEFOS# show  vrrp interface vlan 2 detail
   vlan2  - vrID 1
   ---------------
   State is Backup
   Virtual IP address is 12.0.0.5
   Virtual MAC address is 00:00:5e:00:01:01
   Master router is 12.0.0.5
   Associated IpAddresses :
   ----------------------
   12.0.0.5
   12.0.0.6
   Advertise time is 1 secs
   Current priority is 150
   Configured priority is 150, may preempt
   Configured Authentication
   Authentication key is text1
   Accept Mode Disabled