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Cisco Broadband Cable Command Reference Guide
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Chapter 4 Commands for the Cisco uBR10012 Router
redundancy force-failover main-cpu
redundancy force-failover main-cpu
To force a switchover, so that the standby Performance Routing Engine (PRE1) module becomes the
active PRE1 module, use the
redundancy force-failover main-cpu command in privileged EXEC
mode.
redundancy force-failover main-cpu
Note
The terms failover and switchover are interchangeable, but switchover is the term used across all
Cisco platforms capable of high-availability operation.
Syntax Description This command has no keywords or arguments.
Defaults
No default behavior or values
Command Modes
Privileged EXEC
Command History
Usage Guidelines The redundancy force-failover main-cpu command initiates a manual switchover, so that the standby
PRE1 module becomes the active PRE1 module and assumes full responsibilities for router operations.
This command requires that both PRE1 modules are running a Cisco IOS software image that supports
the Route Processor Redundancy (RPR) feature.
A manual switchover is typically done for one of the following reasons:
•
You want to upgrade or replace the active PRE1 module.
•
You have upgraded the Cisco IOS software on the standby PRE1 module and want the standby PRE1
module to begin using the new software image. This also allows you to upgrade the software on the
former active PRE1 module without interrupting systems operations.
•
You want to test switchover operation on the system.
A switchover can also be manually initiated by removing the active PRE1 module from the chassis, but
using the
redundancy force-failover main-cpu command provides a more graceful switchover, without
generating hardware alarms.
Tip
Do not perform a switchover immediately after you change the configuration and save it to the NVRAM.
Instead, wait a few minutes to allow the two PRE1 modules to synchronize the new configuration, and
then perform the switchover.
Release Modification
12.2(4)XF1 This command was introduced for the Cisco uBR10012 router.
12.2(11)BC3 The active PRE1 module checks to see if a switchover is currently in
progress before implementing this command.