Network Router User Manual

A-145
Cisco ONS 15530 Configuration Guide and Command Reference
78-14227-01, Cisco IOS Release 12.1(10)E2
Appendix A Command Reference
CPU Switch Module Redundancy Commands
maintenance-mode
To disable all CPU switch module redundancy synchronization, use the maintenance-mode redundancy
command. To reenable redundancy synchronization, use the no form of this command.
maintenance-mode
no maintenance-mode
Syntax Description This command has no other arguments or keywords.
Defaults Disabled
Command Modes Redundancy configuration
Command History
Usage Guidelines In maintenance mode, the active CPU switch module does not automatically synchronize information to
the standby CPU switch module. No standby CPU switch module errors and alarms are reported to the
active CPU switch module. The standby CPU switch module leaves the hot-standby mode, enters the
negotiation state, and transitions to the cold-standby state.
When maintenance mode is disabled, the standby CPU switch module reloads until it reaches the
hot-standby state.
Maintenance mode is useful for CPU switch module maintenance operations and system image
troubleshooting.
Note We do not recommend leaving the active and standby CPU switch modules in maintenance mode for
extended periods because any added configuration is lost unless the startup configuration on the
active CPU switch module is manually updated and manually synchronized with the standby CPU
switch module.
Examples The following example shows how to enable maintenance mode redundancy.
Switch# configure terminal
Switch(config)# redundancy
Switch(config-red)# maintenance-mode
This command will place the system in SIMPLEX mode [confirm] y
Release Modification
12.1(10)EV2 This command was introduced.