Virtual Router Redundancy Protocol (VRRP) | 643
Figure 38-13. advertise-interval Command Example
Figure 38-14. show config Command Example
Track an Interface or Object
Set FTOS to monitor the state of any interface according to the virtual group. Each VRRP group can track
up to 12 interfaces, which may affect the priority of the VRRP group. If the tracked interface goes down,
the VRRP group’s priority is decreased by a default value of 10 (also known as cost). If the tracked
interface’s state goes up, the VRRP group’s priority is increased by 10.
Each VRRP group can track changes in the status of up to 12 interfaces and up to 20 additional objects,
which may affect the priority of the VRRP group. If a tracked interface or object goes down, the VRRP
group’s priority is decreased by a default value of 10 (also known as cost). If the state of a tracked interface
or object goes up, the VRRP group’s priority is increased by 10.
The lowered priority of the VRRP group may trigger an election. As the MASTER/BACKUP VRRP
routers are selected based on the VRRP group’s priority, tracking features ensure that the best VRRP router
is the MASTER for that group. The sum of all the costs of all the tracked interfaces must be less than the
configured priority on the VRRP group. If the VRRP group is configured as OWNER router (priority 255),
tracking for that group is disabled, irrespective of the state of the tracked interfaces. The priority of the
owner group always remains at 255.
For a virtual group, you can track the line-protocol state or the routing status of any of the following
interfaces with the
interface interface parameter:
• 40-Gigabit Ethernet: Enter
fortygigabitethernet slot/port in the track interface command (refer to Step 1
below).
• 10-Gigabit Ethernet: Enter
tengigabitethernet slot/port.
• Port channel: Enter
port-channel number, where valid port-channel numbers are: 1 to 128.
• VLAN: Enter
vlan vlan-id, where valid VLAN IDs are from 1 to 4094.
FTOS(conf-if-te-1/1)#vrrp-group 111
FTOS(conf-if-te-1/1-vrid-111)#advertise-interval 10
FTOS(conf-if-te-1/1-vrid-111)#
FTOS(conf-if-te-1/1-vrid-111)#show conf
!
vrrp-group 111
advertise-interval 10
authentication-type simple 7 387a7f2df5969da4
no preempt
priority 255
virtual-address 10.10.10.1
virtual-address 10.10.10.2
virtual-address 10.10.10.3
virtual-address 10.10.10.10
FTOS(conf-if-te-1/1-vrid-111)#
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