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Chapter 7
Configuring Redundant ACE Appliances
Configuring a Probe on the Standby Member for Host Tracking
Configuring a Priority on the Standby Member for Multiple Probes
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To remove the host tracked by the standby member, enter:
host1/Admin(config-ft-track-host)# no peer track-host 172.16.27.1
Configure one or more probes on the standby member to track the health of the
gateway or host. For details about creating probes, see the Cisco 4700 Series
Application Control Engine Appliance Server Load-Balancing Configuration
Guide. To associate an existing probe with a gateway or host for tracking by the
standby member, use the peer probe command in FT track host configuration
mode. The syntax of this command is:
peer probe name priority number
The keyword and arguments are:
name—Identifier of an existing probe that you want to associate with a
•
gateway or host for tracking
priority number—Specifies the priority of the probe sent by the standby
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member. Enter 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 probe is tracking. If the probe goes
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 probe TCP_PROBE1 priority 25
To remove the tracking probe from the standby member, enter:
host1/Admin(config-ft-track-host)# no peer probe TCP_PROBE1
You can configure a tracking priority that the standby member of an FT group uses
when multiple tracking probes are defined. To assign a priority for multiple
probes on the standby member, use the peer priority command in FT track host
configuration mode. The syntax of this command is:
peer priority number
Cisco 4700 Series Application Control Engine Appliance Administration Guide
Configuring Tracking and Failure Detection
7-33
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