Reference Guide
1048 | Virtual Router Redundancy Protocol (VRRP)
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The following example shows the same VRRP group configured on multiple interfaces on different
subnets.
FTOS#do show vrrp
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GigabitEthernet 1/1, VRID: 111, Net: 10.10.10.1
State: Master, Priority: 255, Master: 10.10.10.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 1768, Gratuitous ARP sent: 5
Virtual MAC address:
00:00:5e:00:01:6f
Virtual IP address:
10.10.10.1 10.10.10.2 10.10.10.3 10.10.10.10
Authentication: (none)
------------------
GigabitEthernet 1/2, VRID: 111, Net: 10.10.2.1
State: Master, Priority: 100, Master: 10.10.2.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 27, Gratuitous ARP sent: 2
Virtual MAC address:
00:00:5e:00:01:6f
Virtual IP address:
10.10.2.2 10.10.2.3
Authentication: (none)
FTOS#
When the VRRP process completes its initialization, the State field contains either Master or Backup.
Set VRRP Group (Virtual Router) Priority
Setting a Virtual Router priority to 255 ensures that router is the “owner” virtual router for the VRRP
group. VRRP elects the MASTER router by choosing the router with the highest priority. The default
priority for a Virtual Router is 100. The higher the number, the higher the priority. If the MASTER router
fails, VRRP begins the election process to choose a new MASTER router based on the next-highest
priority.
If two routers in a VRRP group come up at the same time and have the same priority value, the interface’s
physical IP addresses are used as tie-breakers to decide which is MASTER. The router with the higher IP
address will become MASTER.
Configure the VRRP Group’s priority with the following command in the VRRP mode:
Note: show vrrp displays all of the active IPv4 groups, and show ipv6 vrrp displays all of the active IPv6
groups.
Task Command Syntax Command Mode
Configure the priority for the VRRP group. INTERFACE -VRID
priority priority
Range: 1-255
Default: 100