Configuring Preemption - Cisco ACE-4710-K9 Administration Manual

Configuring Redundancy
Note

Configuring Preemption

Note
Cisco 4700 Series Application Control Engine Appliance Administration Guide
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The ACE does not perform bulk config synchronization (sync) on the peer
priority command value in the FT group associated with the Admin context to the
peer. Therefore, you may observe a peer priority value in the
running-configuration file that is different from the actual operating value. For
information on bulk config sync, see the
Configurations" section.
For example, to configure the priority of the FT group member on the remote
standby member, enter:
host1/Admin(config-ft-group)# peer priority 50
To restore the default priority of 100, enter:
host1/Admin(config-ft-group)# no peer priority
Preemption ensures that the group member with the higher priority always asserts
itself and becomes the active member. By default, preemption is enabled. To
configure preemption after it has been disabled, use the preempt command in FT
group configuration mode. The syntax of this command is:
preempt
For example, enter:
host1/Admin(config-ft-group)# preempt
To disable preemption, enter:
host1/Admin(config-ft-group)# no preempt
If you disable preemption by using the no preempt command and a member with
a higher priority is found after the other member has become active, the electing
member becomes the standby member even though it has a higher priority.
Chapter 7 Configuring Redundant ACE Appliances
"Synchronizing Redundant
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