Users Guide

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 priority cost of
the tracking group must be less than the configured priority of the VRRP group. If you configure the VRRP group as the owner
router with a priority 255, tracking for that group is disabled, regardless of the state of the tracked interfaces. The priority of
the owner group always remains 255.
For a virtual group, track the line-protocol state of any interface using the interface command. Enter an interface type and
node/slot/port[:subport] information, or VLAN number:
● ethernet — Physical interface, from 1 to 48
● vlan — VLAN interface, from 1 to 4093
For a virtual group, track the status of a configured object using the track command and the object number. You can also
configure a tracked object for a VRRP group with this command before you create the tracked object. No changes in the VRRP
group’s priority occur until the tracked object is determined to be down.
Configure tracking
To track the object in a VRRP group, use the following commands:
1. Assign an object tracking unique ID number in CONFIGURATION mode, from 1 to 500.
track track-id
2. Monitor an interface in Track CONFIGURATION mode.
interface ethernet node/slot/port[:subport]
Configure interface tracking
OS10(config)# track 10
OS10(conf-track-10)# interface ethernet 1/1/7 line-protocol
View running configuration
OS10(conf-track-10)# do show running-configuration
! Version 10.1.9999P.2281
! Last configuration change at Jul 27 03:24:01 2016
!
aaa authentication system:local
!
interface ethernet1/1/1
ip address 10.1.1.1/16
no switchport
no shutdown
!
vrrp-group 1
priority 200
virtual-address 10.1.1.1
!
interface ethernet1/1/2
switchport access vlan 1
no shutdown
!
interface ethernet1/1/3
switchport access vlan 1
no shutdown
!
interface ethernet1/1/4
switchport access vlan 1
no shutdown
!
interface ethernet1/1/5
switchport access vlan 1
no shutdown
!
interface ethernet1/1/6
switchport access vlan 1
no shutdown
766
Layer 3