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  • NHRP: VRRP config (Cisco)

    Design & Configure

    NHRP: VRRP config (Cisco)

    Technology: Routing
    Area: NHRP
    Vendor: Cisco
    Software: 12.X , 15.X
    Platform: Catalyst platforms, Routing platforms

    The Virtual Router Redundancy Protocol (VRRP) is an election protocol that dynamically assigns responsibility for one or more virtual routers to the VRRP routers on a LAN, allowing several routers on a multiaccess link to utilize the same virtual IP address. In a VRRP configuration, one router is elected as the virtual router master, with the other routers acting as backups in case the virtual router master fails. VRRP is designed for use over multiaccess, multicast, or broadcast capable Ethernet LANs

    To enable VRRP (basic config), use the following command on router 1:

    Router1(config)# interface GigabitEthernet  0/1
    Router1(config-if)#ip address
    Router1(config-if)# vrrp 10 priority 120
    Router1(config-if)# vrrp 10 ip

    configure also router 2 as a backup NHRP router:

    Router2(config)# interface GigabitEthernet  0/1
    Router2(config-if)#ip address
    Router2(config-if)# vrrp 10 priority 100
    Router2(config-if)# vrrp 10 ip


    Check also how to configure GLBP on Cisco IOS.

    Author: Marcin Bialy