Virtual Router Redundancy Protocol (VRRP) | 639
Figure 38-6 shows the same VRRP group configured on multiple interfaces on different subnets.
Figure 38-6. show vrrp Command Example
When the VRRP process completes its initialization, the State field contains either Master or Backup.
Set the 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.
Note: Configuring VRRP priority 255 on an interface on which DHCP Client is enabled is not supported.
FTOS#do show vrrp
------------------
Tengigabitethernet 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)
------------------
Tengigabitethernet 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#
Different Virtual
IP addresses
Same VRRP Group (VRID)
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