Virtual Router Redundancy Protocol – TechAcad.net

Configuring VRRP

SW1 and SW2 are multilayer switches and their interfaces are configured as routed ports. We will create a virtual gateway using VRRP on the interfaces facing Switch0:

Here’s an example how to configure VRRP. You can see the commands are pretty much the same but I didn’t type “standby” but vrrp. I have changed the priority on SW1 to 150 and I’ve enabled MD5 authentication on both switches.

SW1(config)#interface g1/0/1
SW1(config-if)#vrrp 1 ip 192.168.1.1
SW1(config-if)#vrrp 1 priority 150
SW1(config-if)#vrrp 1 authentication md5 key-string techacad

SW2(config-if)#interface g1/0/1
SW2(config-if)#vrrp 1 ip 192.168.1.1
SW2(config-if)#vrrp 1 authentication md5 key-string techacad

Use show vrrp to verify your configuration. The output looks similar to HSRP but one of the
differences is that VRRP uses another virtual MAC address:

0000.2a00.01XX (where X = group number)

You can also use load balancing with VRRP by creating two VRRP groups and making SW1 primary for one group and secondary in other VRRP group. In this way you will need to create two virtual gateways or virtual IPs for each VRRP group. However, this load balacing does not work like per packet load balancing but you can use this scenario on per VLAN basis.

That’s it for now on Virtual Router Redundancy Protocol, i hope this has been informative for you and i would like to thank you for viewing.

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