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1144 | Virtual Router Redundancy Protocol (VRRP)
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Sample Configurations
VRRP for IPv4 Configuration
The configuration in Figure 58-21 shows how to enable IPv4 VRRP. This example does not contain
comprehensive directions and is intended to provide guidance for only a typical VRRP configuration. You
can copy and paste from the example to your CLI. Be sure you make the necessary changes to support your
own IP addresses, interfaces, names, etc. Figure 58-21 shows the VRRP topology created with the CLI
configuration in Figure 58-22.
Figure 58-21. VRRP for IPv4 Topology
R2#show vrrp
------------------
GigabitEthernet 2/31, VRID: 99, Net: 10.1.1.1
State: Master, Priority: 200, Master: 10.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 661, Gratuitous ARP sent: 1
Virtual MAC address:
00:00:5e:00:01:63
Virtual IP address:
10.1.1.3
Authentication: (none)
R2#
R3#show vrrp
------------------
GigabitEthernet 3/21, VRID: 99, Net: 10.1.1.2
State: Backup, Priority: 100, Master: 10.1.1.1
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 331, Bad pkts rcvd: 0, Adv sent: 0, Gratuitous ARP sent: 0
Virtual MAC address:
00:00:5e:00:01:63
Virtual IP address:
10.1.1.3
Authentication: (none)
R3#
State Master: R2 interface has the
higher VRRP group priority (200)
State Backup: R3 interface has the
lower VRRP group priority (100)
Virtual MAC is automatically
assigned and is the same on
both Routers
Internet
10.1.1.3
10.1.1.2
10.1.1.1
GigE 3/21
GigE 2/31
VRID 99
R2
R3