Create VRRP Instance Over an Interface

See the first figure in VRRP Topology for the topology used in this example.

1. Enable VRRP to configure an instance over a VLAN interface.

   SEFOS# configure terminal
   SEFOS(config)# router vrrp

2. Select an interface to configure VRRP and enter Interface Configuration mode.

   SEFOS(config-vrrp)# interface vlan 2

3. Create a VRRP instance and specify a virtual IP address.

   SEFOS(config-vrrp-if)# vrrp 2 ipv4 12.0.0.5
   SEFOS(config-vrrp-if)# end

4. View the VRRP configurations and states in switch 1.

   SEFOS# show vrrp interface vlan 2
   P indicates configured to preempt
   Interface  vrID Priority  P  State   Master Addr     VRouter Addr
   ---------  ---- --------  -  -----   -----------     ------------
   vlan2      1     100      P  Backup   12.0.0.5       12.0.0.5

   Alternatively, you can display the detailed configuration information.

   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 Ip Addresses :
   ----------------------
   12.0.0.5
   Advertise time is 1 secs
   Current priority is 100
   Configured priority is 100, may preempt
   Accept Mode Disabled

   You can display the configuration statistics.

   SEFOS# show vrrp interface vlan 2 statistics
   vlan2  - vrID 1
   ---------------
   Transitions to Master                : 0
   Advertisements Received              : 441
   Advertise Internal Errors            : 0
   Authentication Failures              : 0
   TTL Errors                           : 0
   Zero Priority Packets Received       : 0
   Zero Priority Packets Sent           : 0
   Invalid Type Packets Received        : 0
   Address List Errors                  : 0
   Invalid Authentication Type          : 0
   Authentication Type Mismatch         : 0
   Packet Length Errors                 : 0

   The counter for Advertisements Received increases for every second in switch 1.

5. View the VRRP configurations in switch 2.

   SEFOS# show vrrp interface vlan 2
   P indicates configured to preempt
    
   Interface  vrID Priority  P  State   Master Addr   VRouter Addr
   ---------  ---- --------  -  -----   -----------   ------------
   vlan2       1    100      P  Master   local        12.0.0.5

   Alternatively, you can display the detailed configuration information.

   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
   Advertise time is 1 secs
   Current priority is 100
   Configured priority is 100, may preempt
   Accept Mode Disabled

   You can display the configuration statistics.

   SEFOS# show vrrp interface vlan 2 statistics
   vlan2  - vrID 1
   ---------------
   Transitions to Master                  : 1
   Advertisements Received                : 0
   Advertise Internal Errors              : 0
   Authentication Failures                : 0
   TTL Errors                             : 0
   Zero Priority Packets Received         : 0
   Zero Priority Packets Sent             : 0
   Invalid Type Packets Received          : 0
   Address List Errors                    : 0
   Invalid Authentication Type            : 0
   Authentication Type Mismatch           : 0
   Packet Length Errors                   : 0

   The counter for Advertisements Received does not increase for every second in switch 2. Maximum number of instances allowed in a router is 10.