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Chapter 4
Commands for the Cisco uBR10012 Router
Wait two to three minutes after a switchover before switching the system back to the original PRE1
Tip
module, so as to allow the system to stabilize and so that both PRE1 modules are ready for the switch.
In Cisco IOS Release 12.2(11)BC3 and later releases, the active PRE1 module will not initiate a new
switchover until a current switchover is complete and the system has stabilized.
Examples
The following example shows a switchover being manually initiated:
Router# redundancy force-failover main-cpu
Proceed with switchover to standby PRE? [confirm] y
Pressing enter or y confirms the action and begins the switchover. Pressing any other key aborts the
Note
switchover and returns control to the current active PRE1 module.
The following example shows a switchover being attempted but failing because the standby PRE1
module is either not ready, not available, or not installed:
Router# redundancy force-failover main-cpu
Proceed with switchover to standby PRE? [confirm]
Standby PRE not ready, switchover aborted.
Router#
In some versions of Cisco IOS software, a failed software switchover will show the following message:
Note
Unable to communicate with standby PRE, switchover aborted.
Related Commands
Command
associate
redundancy
redundancy reload
redundancy
switch-activity
OL-1581-08
Description
Associates two line cards for Automatic Protection Switching (APS)
redundancy protection.
Enters redundancy configuration mode so that the synchronization
parameters can be configured.
Resets the standby PRE1 module or to reset both the active and standby
PRE1 modules.
Forces a switchover to the standby PRE module.
Cisco Broadband Cable Command Reference Guide
redundancy force-failover main-cpu
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