Configuring Optional Active/Standby Failover Settings - Cisco 7604 Configuration Manual

Configuring Failover
(Optional) Designate this unit as the secondary unit:
Step 2
hostname(config)# failover lan unit secondary
Note
(Optional) Specify different hostnames for the primary and secondary FWSMs to replace the default
Step 3
hostname "FWSM" that is assigned to both units.
hostname(config)# hostname primary-hostname
hostname(config)# hostname secondary secondary-hostname
Enable failover:
Step 4
hostname(config)# failover
After you enable failover, the active unit sends the configuration in running memory to the standby unit.
As the configuration synchronizes, the messages "Beginning configuration replication: Sending to mate"
and "End Configuration Replication to mate" appear on the active unit console.
After the running configuration has completed replication, save the configuration to Flash memory:
Step 5
hostname(config)# write memory

Configuring Optional Active/Standby Failover Settings

You can configure the following optional Active/Standby failover setting when you are initially
configuring failover or after failover has already been configured. Unless otherwise noted, the
commands should be entered on the active unit.
This section includes the following topics:
•
•
•
•
Configuring Failover Preemption
When the primary unit in an Active/Standby failover configuration fails, or if the secondary unit boots
before the primary unit, the secondary, standby unit becomes active. When the failover condition is
resolved on the primary unit, it boots to the standby state by default and the secondary unit remains in
the active state.
You can use the failover preempt command to cause the primary unit to become the active unit
automatically after a specified amount of time. Enter the following command to configure preemption
for the primary unit:
hostname(config)# failover preempt [delay]
The delay is the wait time, in seconds, before the secondary unit is preempted. Valid values are from 1
to 1200 seconds. If the delay is not specified, there is no delay.
When the primary unit becomes active, the secondary unit enters the standby state.
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
14-24
This step is optional because by default units are designated as secondary unless previously
configured.
Configuring Failover Preemption, page 14-24
Enabling HTTP Replication with Stateful Failover, page 14-25
Configuring Interface and Unit Poll Times, page 14-25
Configuring Failover Criteria, page 14-25
Chapter 14 Configuring Failover
OL-20748-01