Cisco 7604 Configuration Manual page 282

Configuring Failover
For each failover group, you need to specify whether the failover group has primary or secondary
preference using the primary or secondary command. You can assign the same preference to both
failover groups. For load balancing configurations, you should assign each failover group a different unit
preference.
The following example assigns failover group 1 a primary preference and failover group 2 a secondary
preference:
hostname(config)# failover group 1
hostname(config-fover-group)# primary
hostname(config-fover-group)# exit
hostname(config)# failover group 2
hostname(config-fover-group)# secondary
hostname(config-fover-group)# exit
Assign each context to a failover group using the join-failover-group command in context configuration
Step 5
mode.
Any unassigned contexts are automatically assigned to failover group 1. The admin context is always a
member of failover group 1.
Enter the following commands to assign each context to a failover group:
hostname(config)# context context_name
hostname(config-context)# join-failover-group {1 | 2}
Enable failover:
Step 6
hostname(config)# failover
To enable monitoring on an interface, change to the context and enter the following command:
Step 7
hostname(config)# changeto context context_name
hostname(config)# monitor-interface interface_name
The maximum number of interfaces to monitor on the FWSM (divided between all contexts) is 250.
Configure the Secondary Unit
You need to configure the secondary unit to recognize the failover link. This allows the secondary unit
to communicate with and receive the running configuration from the primary unit.
To configure the secondary unit in an Active/Active failover configuration, perform the following steps:
Define the failover interface. Use the same settings as you used for the primary unit.
Step 1
a.
b.
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
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Specify the interface to be used as the failover interface:
hostname(config)# failover lan interface if_name vlan vlan
The if_name argument assigns a logical name to the interface specified by the vlan argument.
Assign the active and standby IP address to the failover link:
hostname(config)# failover interface ip if_name ip_addr mask standby ip_addr
Enter this command exactly as you entered it on the primary unit when you configured the
Note
failover interface.
Chapter 14 Configuring Failover
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