3Com Switch 8800 Configuration Guide Chapter 41 VRRP Configuration41-8Table 41-8 Configure virtual router timerOperation CommandConfigure virtual router timer vrrp vrid virtual-router-ID timeradvertise adver-intervalClear virtual router timer undo vrrp vrid virtual-router-ID timeradvertiseBy default, adver-interval is configured to be 1.41.2.9 Configuring Switch to Track a Specified InterfaceVRRP interface track function has expanded the backup function. Backup is providednot only to the interface where the virtual router resides, but also to some othermalfunctioning switch interface. By implementing the following command you can tracksome interface.If the interface which is tracked is DOWN, the priority of the switch including theinterface will reduce automatically by the value specified by value-reduced, thusresulting in comparatively higher priorities of other switches within the virtual router, oneof which will turn to Master switch so as to track this interface.Perform the following configuration in VLAN interface view.Table 41-9 Configure switch to track a specified interfaceOperation CommandConfigure the switch to track a specifiedinterfacevrrp vrid virtual-router-ID trackvlan-interface interface-num [ reducedvalue-reduced ]Stop tracking the specified interface undo vrrp vrid virtual-router-ID track[ vlan-interface interface-num ]By default, value-reduced is taken 10.Note:When the switch is an IP address owner, its interfaces cannot be tracked.If the interface tracked is up again, the corresponding priority of the switch, includingthe interface, will be restored automaticallyYou can only track up to eight interfaces in one virtual router.
