Cisco ACE-4710-K9 Administration Guide - Page 260
Configuration Requirements and Restrictions, Redundancy Configuration Quick Start
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Configuration Requirements and Restrictions Chapter 7 Configuring Redundant ACE Appliances 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 each 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. Cisco 4700 Series Application Control Engine Appliance Administration Guide 7-8 OL-11157-01