Reference Guide

Virtual Router Redundancy Protocol (VRRP) | 1037
Change that advertisement interval with the following command in the VRRP mode:
Figure 54-386. Command Example: advertise-interval
Figure 54-387. Command Example Display: advertise-interval in VRID mode
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:
• 1-Gigabit Ethernet: Enter
gigabitethernet slot/port in the track interface command (see Step 1 below).
Task Command Syntax Command Mode
Change the advertisement interval
setting.
advertise-interval seconds
Range: 1-255 seconds
Default: 1 second
INTERFACE-VRID
FTOS(conf-if-gi-1/1)#vrrp-group 111
FTOS(conf-if-gi-1/1-vrid-111)#advertise-interval 10
FTOS(conf-if-gi-1/1-vrid-111)#
FTOS(conf-if-gi-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-gi-1/1-vrid-111)#