Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 2 VRRP Configuration Commands
3Com Corporation
2-7
2.1.9 vrrp vrid track
Syntax
vrrp vrid virtual-router-ID track interface-name [ reduced priority-reduced ]
undo vrrp vrid virtual-router-ID track [ interface-name ]
View
Interface view
Parameter
virtual-router-ID: VRRP standby group number, in the range 1 to 255.
interface-name: Interface to be tracked.
priority-reduced: Value by which the priority is reduced. It is in the range 1 to 255 and
defaults to 10.
Description
Use the vrrp vrid track command to configure the interface to be tracked.
Use the undo vrrp vrid track command to disable tracking the specified interface.
The interface tracking function expands the backup functionality of VRRP. It provides
backup not only when routers fail but also when network interfaces go down.
After the monitored interface specified in this command goes down, the priority of the
router owning this interface automatically decreased by the value specified by
value-reduced, allowing a higher priority router in the standby group to take over as the
master. When the router is the IP address owner, however, you cannot configure
interface tracking on it.
Example
# Track interface Serial 0/0/0.
[3Com -Ethernet0/2/0] vrrp vrid 1 track serial0/0/0 reduced 50
# Disable the router to track interface Serial 0/0/0.
[3Com -Ethernet0/2/0] undo vrrp vrid 1 track serial0/0/0
2.1.10 vrrp vrid virtual-ip
Syntax
vrrp vrid virtual-router-ID virtual-ip virtual-address
undo vrrp vrid virtual-router-ID virtual-ip [ virtual-address ]