Chapter 7 Configuring Redundant ACE Appliances
Example of a Redundancy Configuration
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Cisco 4700 Series Application Control Engine Appliance Administration Guide
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Example of a Tracking Configuration for an Interface
The following example demonstrates a tracking configuration for an interface on
the active member of an FT group:
ft track interface TRACK_VLAN100
track-interface vlan 100
priority 50
In the above configuration example, if VLAN 100 goes 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 the Interface Tracked by the Standby Member”
and the
“Configuring a Priority for a Tracked Interface on the Standby Member”
sections.
Example of a Redundancy Configuration
The following example illustrates a running-configuration that defines fault
tolerance (FT) for a single ACE appliance operating in a redundancy
configuration. You must configure a maximum of two ACE appliances (peers) for
redundancy to failover from the active appliance to the standby appliance.
Note
All FT parameters are configured in the Admin context.
This configuration addresses the following redundancy components:
•
A dedicated FT VLAN for communication between the members of an FT
group. You must configure this same VLAN on both peer appliances.
•
An FT peer definition.
•
An FT group that is associated with the Admin context.
•
A critical tracking and failure detection process for an interface.
The redundancy configuration appears in bold in the example.
