3Com 7750 Series Command Reference Manual page 706

3com switch command reference guide

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3Com Switch 7750 Series

Command Reference Guide – VRRP & HA

virtual-router-id: VRRP backup group ID ranging form 1 to 255.

Interface-type interface-number: VLAN interface to be tracked.

value-reduced: Value by which the priority is to decrease. This argument ranges from 1

Use the vrrp vrid track command to set a VLAN interface/Ethernet port to be tracked.

Use the undo vrrp vrid track command to disable a VLAN interface/Ethernet port from

being tracked.

By default, the value by which the priority of the VLAN interface decreases is 10.

The VLAN interface/Ethernet port tracking function extends the use of the backup

function. With this function enabled, the backup function is provided not only when the

interface where the backup group resides fails, but also when other interfaces/Ethernet

ports are unavailable. By executing the related command you can track an

interface/Ethernet port.

When a tracked VLAN interface/Ethernet port goes down, the priority of the switch

owning the interface/port will reduce automatically by a specified value (the

value-reduced argument). If the switches with their priorities higher than that of the

current master switch exist in the backup group, a new master switch will be then

The Ethernet port tracked can be in or out of the VLAN in whose interface the

backup group resides.

If a switch is the IP address owner, the VLAN interface/Ethernet port tracking

function can not be enabled for the switch.

If a tracked VLAN interface/Ethernet port goes down, when it is up again, the priority

of the corresponding switch is automatically restored.

Each backup group can track up to eight VLAN interfaces/Ethernet ports.

# Configure VLAN 2 interface to track VLAN 1 interface and specify the priority of the

master switch of backup group 1 (on VLAN 2 interface) decreases by 50 when VLAN 1

interface goes down.

<3Com> system-view

System View: return to User View with Ctrl+Z.

Chapter 1 VRRP Configuration Commands

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