Users Guide

interval to a value higher than the default value of one second. If you change the time interval between VRRP advertisements on one
router, change it on all participating routers.
If you congure VRRP version 2, you must congure the timer values in multiple of whole seconds. For example, a timer value of 3 seconds
or 300 centisecs is valid and equivalent. A time value of 50 centisecs is invalid because it not a multiple of 1 second. If you are using VRRP
version 3, you must congure the timer values in multiples of 25 centisecs. A centisecs is 1/100 of a second.
• Create a virtual router for the interface with the VRRP identier in INTERFACE mode, from 1 to 255.
vrrp-group vrrp-id
• For VRRPv2, change the advertisement interval setting in seconds in INTERFACE-VRRP mode, from 1 to 255, default 1.
advertise-interval seconds
• For VRRPv3, change the advertisement centisecs interval setting INTERFACE-VRRP mode, from 25 to 4075, default 100.
advertise-interval centisecs centisecs
Change advertisement interval
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# vrrp-group 1
OS10(conf-eth1/1/1-vrid-1)# advertise-interval centisecs 200
View running conguration
OS10(conf-eth1/1/1-vrid-1)# do show running-configuration
! Version 10.1.9999P.2281
! Last configuration change at Jul 26 12:22:33 2016
!
aaa authentication system:local
!
interface ethernet1/1/1
ip address 10.1.1.1/16
no switchport
no shutdown
!
vrrp-group 1
advertisment-interval centisecs 200
priority 200
virtual-address 10.1.1.1
!
interface ethernet1/1/2
switchport access vlan 1
no shutdown
Interface/object tracking
You can monitor the state of any interface according to the virtual group. OS10 supports a maximum of 10 track groups and each track
group can track only one interface.
If the tracked interface goes down, the VRRP group’s priority decreases by a default value of 10 — also known as cost. If the tracked
interface’s state goes up, the VRRP group’s priority increases by the priority cost.
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 congured priority of the VRRP group. If you congure 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
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Layer 3