Cisco 7604 Configuration Guide - Page 283
Configuring Optional Active/Active Failover Settings, Configuring Failover Group Preemption
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Chapter 14 Configuring Failover Configuring Failover Step 2 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. (Optional) Designate this unit as the secondary unit: hostname(config)# failover lan unit secondary Note This step is optional because by default units are designated as secondary unless previously configured otherwise. Step 3 Step 4 Step 5 Step 6 (Optional) Specify different hostnames for the primary and secondary FWSMs to replace the default hostname "FWSM" that is assigned to both units. hostname(config)# hostname primary-hostname secondary secondary-hostname Enable failover: 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, enter the following command to save the configuration to Flash memory: hostname(config)# write memory If necessary, force any failover group that is active on the primary to the active state on the secondary unit. To force a failover group to become active on the secondary unit, enter the following command in the system execution space on the primary unit: hostname# no failover active group group_id The group_id argument specifies the group you want to become active on the secondary unit. Configuring Optional Active/Active Failover Settings The following optional Active/Active failover settings can be configured when you are initially configuring failover or after you have already established failover. Unless otherwise noted, the commands should be entered on the unit that has failover group 1 in the active state. This section includes the following topics: • Configuring Failover Group Preemption, page 14-29 • Enabling HTTP Replication with Stateful Failover, page 14-30 • Configuring Interface and Unit Poll Times, page 14-30 • Configuring Failover Criteria, page 14-30 Configuring Failover Group Preemption Assigning a primary or secondary priority to a failover group specifies which unit the failover group becomes active on when both units boot simultaneously. However, if one unit boots before the other, then both failover groups become active on that unit. When the other unit comes online, any failover groups OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM 14-29
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