Chapter 7 Configuring Redundant ACE Appliances
Configuration Requirements and Restrictions
7-8
Cisco 4700 Series Application Control Engine Appliance Administration Guide
OL-11157-01
Configuration Requirements and Restrictions
Follow these requirements and restrictions when configuring the redundancy
feature.
• Redundancy is not supported between an ACE appliance and an ACE module
operating as peers. Redundancy must be of the same ACE device type and
software release.
• In bridged mode (Layer 2), two contexts cannot share the same VLAN.
• To achieve active-active redundancy, a minimum of two contexts and two FT
groups are required on each ACE.
• When you configure redundancy, the ACE keeps all interfaces that do not
have an IP address in the Down state. The IP address and the peer IP address
that you assign to a VLAN interface should be in the same subnet, but
different IP addresses. For more information about configuring VLAN
interfaces, see the Cisco 4700 Series Application Control Engine Appliance
Routing and Bridging Configuration Guide.
Redundancy Configuration Quick Start
Table 7-1 provides a quick overview of the steps required to configure redundancy
for eac
h ACE in the redundancy configuration. Each step includes the CLI
command or a reference to the procedure required to complete the task. For a
complete description of each feature and all the options associated with the CLI
commands, see the sections following Table 7-1.
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