Configuring VRRP
Fixed Switch Configuration Guide 23-5
The master advertise-interval is changed to 2 seconds for VRID 1.
If Router R1 should become unavailable, Router R2 would take over virtual router VRID 1 and its
associated IP addresses. Packets sent to 172.111.1.1/16 would go to Router R2. When Router R1
comes up again, it would take over as master, and Router R2 would revert to backup.
Figure 23-2 Basic Configuration Example
Router 1
Router 1(su)->router(Config)#interface vlan 111
Router 1(su)->router(Config-if(Vlan 111))#ip address 172.111.1.1 255.255.255.0
Router 1(su)->router(Config-if(Vlan 111))#no shutdown
Router 1(su)->router(Config-if(Vlan 111))#exit
Router 1(su)->router(Config)#router vrrp
Router 1(su)->router(Config-router)#create vlan 111 1
Router 1(su)->router(Config-router)#address vlan 111 1 172.111.1.1 1
Router 1(su)->router(Config-router)#advertise-interval vlan 111 1 2
Router 1(su)->router(Config-router)#enable vlan 111 1
Router 1(su)->router(Config-router)#exit
Router 2
Router 2(su)->router(Config)#interface vlan 111
Router 2(su)->router(Config-if(Vlan 111))#ip address 172.111.1.2 255.255.255.0
Router 2(su)->router(Config-if(Vlan 111))#no shutdown
Router 2(su)->router(Config-if(Vlan 111))#exit
Router 2(su)->router(Config)#router vrrp
Router 2(su)->router(Config-router)#create vlan 111 1
Router 2(su)->router(Config-router)#address vlan 111 1 172.111.1.1 0
Router 2(su)->router(Config-router)#advertise-interval vlan 111 1 2
Router 2(su)->router(Config-router)#master-icmp-reply vlan 111 1
Router 2(su)->router(Config-router)#enable vlan 111 1
Router R1 Router R2
VRID 1
172.111.1.1
Host 1
172.111.1.100/16
Default Gateway 172.111.1.1
ge.1.1
VLAN 111
172.111.1.2/16
ge.1.1
VLAN 111
172.111.1.1/16
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