Cisco ACE-4710-K9 Administration Guide - Page 286

Configuring Tracking and Failure Detection Chapter 7 Configuring Redundant ACE Appliances The number argument specifies the priority of the probes configured for the gateway or host 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 gateway or host that the probes are tracking. If all the probes go down, the ACE decrements the priority of the FT group on the standby member by the value of the number argument. For example, enter: host1/Admin(config-ft-track-host)# peer priority 25 To reset the multiple-probe priority to the default value of 0 on the standby member, enter: host1/Admin(config-ft-track-host)# no peer priority 25 Example of a Tracking Configuration for a Gateway The following example demonstrates a tracking configuration for a gateway on the active member of an FT group: ft track host TRACK_GATEWAY track-host 192.161.100.1 probe GATEWAY_TRACK1 priority 10 probe GATEWAY_TRACK2 priority 20 priority 50 In this configuration example, if the gateway_track1 probe goes down, the ACE reduces the priority of the FT group on the active member by 10. If the gateway_track2 probe goes down, the ACE reduces the priority of the FT group on the active member by 20. If both probes go down, the ACE reduces the priority of the FT group on the active member by 50. If at any time 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. To configure tracking on the standby member, use the peer commands described in the "Configuring a Probe on the Standby Member for Host Tracking" and the "Configuring a Priority on the Standby Member for Multiple Probes" sections. 7-34 Cisco 4700 Series Application Control Engine Appliance Administration Guide OL-11157-01