Cisco Catalyst 6500 Series User Manual

15-15
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide
OL-6392-01
Chapter 15 Using Failover
Configuring Failover
Configuring Failover
This section describes how to configure failover and includes the following topics:
• Configuring the Primary Module, page 15-15
• Configuring the Secondary Module, page 15-18
Configuring the Primary Module
Follow these steps to configure the primary module. For multiple context mode, all steps are performed
in the system execution space unless otherwise noted.
Note At any time during the procedure, you can enter the show failover command to see the failover status.
See the “Using the Show Failover Command” section on page 15-19 section for detailed information.
Step 1 To configure the VLAN interface you are using for the failover link, enter the following command. For
multiple context mode, enter this command in the system execution space:
primary(config)# failover lan interface interface_name vlan vlan
Note this setting because this command is the same on the secondary module.
This VLAN should not be used for any other purpose (except, optionally, the state link) or be assigned
to any switch ports. This VLAN does need to be assigned to the FWSM by the switch.
Do not assign an ACL to this interface; failover traffic is allowed automatically, and other traffic is
denied.
Step 2 To set the IP address of the failover interface, enter the following command:
primary(config)# failover interface ip failover_interface ip_address mask standby
ip_address
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.
Note this setting because this command is the same on the secondary module.
The failover link IP address and MAC address do not change at failover. The active IP address always
stays with the primary module, while the standby IP address stays with the secondary module.
Step 3 (Stateful failover only) To configure the VLAN interface you are using for the state link, enter the
following command:
primary(config)# failover link interface_name [vlan vlan ]
This VLAN should not be used for any other purpose (except, optionally, the failover link) or be assigned
to any switch ports. This VLAN does need to be assigned to the FWSM by the switch.
If the interface is the same as the failover interface, you do not need to identify the VLAN.
Do not assign an ACL to this interface; failover traffic is allowed automatically, and other traffic is
denied.
Step 4 (Stateful failover only) To set the IP address of the state interface, enter the following command:
primary(config)# failover interface ip state_interface ip_address mask standby ip_address

Cisco Catalyst 6500 Series Specifications

General

Brand	Cisco
Model	Catalyst 6500 Series
Category	Switch
Language	English