Cisco Catalyst 6500 Series User Manual

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Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide
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Chapter 15 Using Failover
Frequently Asked Failover Questions
Failover System Messages
The FWSM issues a number of system messages related to failover at priority level 2, which indicates a
critical condition. To view these messages, see the Catalyst 6500 Series Switch and Cisco 7600 Series
Router Firewall Services Module System Messages Guide to enable logging and to see descriptions of
the system messages.
SNMP
To receive SNMP syslog traps for failover, see the “Using SNMP” section on page 17-1 for more
information.
Debug Messages
To see debug messages, enter the debug fover command. See the Catalyst 6500 Series Switch and Cisco
7600 Series Router Firewall Services Module Command Reference for more information.
Frequently Asked Failover Questions
This section contains frequently asked questions about the failover features and includes the following
topics:
• Configuration Replication Questions, page 15-24
• Basic Failover Questions, page 15-25
• Stateful Failover Questions, page 15-26
Configuration Replication Questions
See the following questions and answers for configuration replication:
• Does configuration replication save the configuration to Flash memory on the standby module?
No, the configuration is only in running memory.
• How can both modules be configured the same without manually entering the configuration twice?
Commands entered on the active module are automatically replicated to the standby module.
• What happens if I enter commands on the standby module?
You will see an error message telling you that the configurations are out of sync. However, the
command is still applied.
If you enter individual commands on the active module that are replicated to the standby module,
your alterations on the standby module are preserved.
If you use the write standby command on the active module, it will erase any new commands you
entered on the standby module.
• What happens if I enter the copy running-config startup-config command on the active module?
The copy running-config startup-config command is replicated to the standby module, which
proceeds to write its configuration to Flash memory.

Cisco Catalyst 6500 Series Specifications

General

Brand	Cisco
Model	Catalyst 6500 Series
Category	Switch
Language	English