Configuring Layer 3 Redundancy with Virtual Router Redundancy Protocol – VRRP and Gateway Load Balancing Protocol – GLBP
How to enable VRRP and GLBP

VRRP and GLBP are supported on select Catalyst platforms and, when supported, can be configured using these commands:  – 

VRRP Implementation
Example: VRRP Implementation

Switch(config)#interface vlan10
Switch(config-if)#ip address 10.1.10.5 255.255.255.0
Switch(config-if)#vrrp 10 ip 10.1.10.1
Switch(config)#interface vlan7
Switch(config-if)#ip address 10.1.7.5 255.255.255.0
Switch(config-if)#glbp 7 ip 10.1.7.1
Switch(config-if)#glbp 7 priority 150
Switch(config-if)#glbp 7 timers msec 250 msec 750

GLBP Implementation
Figures  –  show the steps required to configure GLBP.

Example: GLBP Implementation

Switch(config)#interface vlan7
Switch(config-if)#ip address 10.1.7.5 255.255.255.0
Switch(config-if)#glbp 7 ip 10.1.7.1
Switch(config-if)#glbp 7 priority 150
Switch(config-if)#glbp 7 timers msec 250 msec 750

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