Cisco 7604 Configuration Manual page 277

Chapter 14 Configuring Failover
Step 5 To enable monitoring on an interface, enter the following command:
hostname(config)# monitor-interface interface_name
The maximum number of interfaces to monitor on the FWSM (divided between all contexts) is 250.
Note
Enable failover:
Step 6
hostname(config)# failover
Step 7 Save the configuration:
hostname(config)# write memory
Note
Configuring the Secondary Unit
The only configuration required on the secondary unit is for the failover interface. The secondary unit
requires these commands to initially communicate with the primary unit. After the primary unit sends
its configuration to the secondary unit, the only permanent difference between the two configurations is
the failover lan unit command, which identifies each unit as primary or secondary.
For multiple context mode, all steps are performed in the system execution space unless noted otherwise.
To configure the secondary unit, 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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hostname(config)# failover interface ip if_name ip_addr mask standby ip_addr
The standby IP address must be in the same subnet as the active IP address. You do not need to
identify the standby address subnet mask.
The state link IP address and MAC address do not change at failover. The active IP address always
stays with the primary unit, while the standby IP address stays with the secondary unit.
In multiple context mode, you must configure interface monitoring from within each context.
Use the changeto context command to switch between contexts. The command prompt changes
to
hostname/context(config)#
In multiple context mode, enter write memory all in the system execution space to save all
context configurations.
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 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
Note Enter this command exactly as you entered it on the primary unit when you configured the
failover interface on the primary unit.
, where context is the name of the current context.
Configuring Failover
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