Cisco 7604 Configuration Guide - Page 265
Command Replication, Failover Triggers, asdm disconnect
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Chapter 14 Configuring Failover Understanding Failover Command Replication As commands are entered on the active unit, they are sent across the failover link to the standby unit. Command replication always flows from the active unit to the standby unit. Replicated commands are stored in the running configuration of the standby unit. Saving the running configuration to the startup configuration on the active unit causes the running configuration to be saved to the startup configuration on the standby unit; however, you do not have to save the active configuration to Flash memory to replicate the commands. Note The RSA keys are not synchronized from the primary to the secondary unit in FWSM. The following commands are replicated to the standby unit: • all configuration commands except for the mode and failover lan unit commands • copy running-config startup-config • delete • mkdir • rename • rmdir • write memory The following commands are not replicated to the standby unit: • all forms of the copy command except for copy running-config startup config • all forms of the write command except for write memory • asdm disconnect • debug • failover lan unit • failover suspend-config-sync • mode • show • ssh disconnect Changes made on the standby unit are not replicated to the active unit. If you enter a command on the standby unit, FWSM displays the message **** WARNING **** Configuration Replication is NOT performed from Standby unit to Active unit. Configurations are no longer synchronized. This message displays even when you enter many commands that do not affect the configuration. Failover Triggers The unit can fail if one of the following events occurs: • The unit has a hardware failure or a power failure. • The unit has a software failure. • Too many monitored interfaces fail. • The no failover active command is entered on the active unit or the failover active command is entered on the standby unit. OL-20748-01 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM 14-11
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