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ATM Switch Router Software Configuration Guide
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Chapter5 Configuring Redundancy
Route Processor Redundant Operation (Catalyst 8540 MSR)
To force the secondary route processor to take over as the primary, use the following privileged EXEC
command:
Example
The following example shows how to make the secondary route processor the primary.
Switch# redundancy force-failover main-cpu
The following example shows the warning message that appears if you attempt to force a failover
between route processors whose Cisco IOS images are significantly different.
Switch# redundancy force-failover main-cpu
Warning: Attempting to migrate to a different version of system image than the primary.
Do you want to continue? Y
Note If the translation functions needed to migrate the da tabases during the route processor switchover are
significant, the warning message in the previous example appears asking you to confirm the upgrade o r
downgrade.
As long as you have not changed the default configuration register setting, whic h is set to autoboot
by default, the secondary route processor (formerly the primar y) completes the boot process from
standby mode.
If you have changed the default configuration register value, you can change it back to autoboot, and
ensure that the correct system image is used at startup, by perfo rming the following steps, beginning in
global configuration mode:
Note If the secondary route processor remains in ROM monitor mode, yo u can manually boot the processor
from either the bootflash or Flash PC card.
Command Purpose
redundancy force-failover main-cpu Forces a route processor switchover.
Command Purpose
Step1 Switch(config)# config-register 0x2102 Sets the config register for autoboot.
Step2 Switch(config)# boot system {[device:]filename
[hostname | ip-address] | flash [device:][filename]
| mop filename [type] [card/subcard/port] | rcp
filename [ip-address] | rom | tftp filename
[hostname | ip-address]}
Specifies the system image file to load at startup.
Step3 Switch(config)# end
Switch#
Returns to privileged EXEC mode.
Step4 Switch# copy system:running-config
nvram:startup-config
Saves the configuration to NVRAM.