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Cisco 4700 Series Application Control Engine Appliance Administration Guide
OL-11157-01
Chapter 7 Configuring Redundant ACE Appliances
Configuring Tracking and Failure Detection
Configuring the Interface Tracked by the Standby Member
To configure the interface that you want the standby member to track, use the peer
track-interface vlan command in FT track interface configuration mode. The
syntax of this command is:
peer track-interface vlan vl
an_id
For the vl
an_id argument, enter the VLAN ID of an existing VLAN configured on
the standby member as an integer from 2 to 4094.
For example, to track the critical interface VLAN 200, enter:
host1/Admin(config-ft-track-intf)# peer track-interface vlan 200
To remove VLAN 200 from the tracking process, enter:
host1/Admin(config-ft-track-intf)# no peer track-interface vlan 200
Configuring a Priority for a Tracked Interface on the Standby Member
To assign a priority to the tracked interface that the standby member is tracking,
use the peer priority command in FT track interface configuration mode. The
syntax of this command is:
peer priority nu
mber
The nu
mber argument specifies the priority of the interface on the standby
member. Enter a priority value as an integer from 0 to 255. The default is 0. Higher
values indicate higher priorities. Assign a priority value based on the relative
importance of the interface that you are tracking. If the tracked interface goes
down, the ACE decrements the priority of the FT group on the standby member
by the value of the number argument. If the priority of the FT group on the active
member falls below the priority of the FT group on the standby member, a
switchover occurs.
For example, enter:
host1/Admin(config-ft-track-intf)# peer priority 25
To reset the interface priority on the standby member to the default value of 0,
enter:
host1/Admin(config-ft-track-intf)# no peer priority 25
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