Example Of A Tracking Configuration For A Gateway - Cisco ACE-4710-K9 Administration Manual

Configuring Tracking and Failure Detection

Example of a Tracking Configuration for a Gateway

Cisco 4700 Series Application Control Engine Appliance Administration Guide
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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
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"
"Configuring a Priority on the Standby Member for Multiple Probes"
Chapter 7 Configuring Redundant ACE Appliances
and the
sections.
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