Installation guide

11-11
Device Manager Guide, Cisco ACE 4700 Series Application Control Engine Appliance
OL-26645-02
Chapter 11 Configuring High Availability
Configuring ACE High Availability Groups
Clearing High Availability Pairs
Note This functionality is available for only Admin contexts.
Use this procedure to remove a high availability link between two ACE appliances.
Procedure
Step 1 Choose Config > Virtual Contexts > High Availability (HA) > Setup. The ACE HA Management
screen appears.
Step 2 Select the ACE appliance pair whose high availability configuration you want to remove, and then click
Clear. A message appears asking you to confirm the clearing of the high availability link.
Step 3 Do the following:
• Click OK to confirm the removal of this high availability link and to return to the ACE HA
Management screen.
• Click Cancel to exit this procedure without removing this high availability link and to return to the
ACE HA Management screen.
Related Topics
• Understanding ACE Redundancy, page 11-2
• Configuring High Availability Peers, page 11-8
• Editing ACE High Availability Groups, page 11-14
• High Availability Tracking and Failure Detection Overview, page 11-17
• Tracking VLAN Interfaces for High Availability, page 11-19
• Tracking Hosts for High Availability, page 11-20
Configuring ACE High Availability Groups
Note This functionality is available for only Admin contexts.
A fault-tolerant group consists of a maximum of two contexts: One active context on one appliance and
one standby context on the peer appliance. You can create multiple fault-tolerant groups on each ACE
appliance up to a maximum of 21 groups (20 user contexts and 1 Admin context).
Use this procedure to configure high availability groups.
Note For the replication process to function properly and successfully replicate the configuration for a user
context when switching from the active context to the standby context, ensure that each user context has
been added to the FT group. All applicable user contexts must be part of an FT group for redundancy to
function properly.