Specifications

OL-4923-01 B0

Step 4 Enter global configuration mode and configure the system to boot first from a Cisco IOS Release

12.1(13)E system image and then from a Cisco IOS Release 12.1(12)E system image.

Router# configure terminal

Router (config)# boot system flash slot0:rsp-k-mx11.2

Router (config)# boot system flash slot0:rsp-k-mx11.1

With this configuration, when the slot 6 RSP is active, it looks first in its PC Card slot 0 for the system

image file rsp-k-mx11.2 to boot. Finding this file, the router boots from that system image. When the slot

7 RSP is active, it also looks first in its slot 0 for the system image file rsp-k-mx11.2 to boot. Because

that image does not exist in that location, the slot 7 RSP looks for the system image file rsp-k-mx11.1 in

slot 0 to boot. Finding this file in its PC Card slot 0, the router boots from that system image. In this way,

each RSP can reboot the system using its own system image when it becomes the active RSP.

Step 5 Configure the system further with a fault-tolerant booting strategy:

Router (config)# boot system tftp rsp-k-mx11.1 1.1.1.25

Step 6 Set the configuration register to enable loading of the system image from a network server or from Flash

memory and save the changes to the active and the standby startup configuration file:

Router (config)# config-register 0x010F

Router (config)# Ctrl-Z

Router# copy running-config startup-config

Step 7 Reload the system so that the active RSP uses the new Release 12.1(12)S system image:

Router# reload

This completes the sample procedure for upgrading to a new software version.

Backing Up with an Older Software Version Example

In the following sample scenario, assume the following:

• The active RSP is in processor slot 6, and the standby RSP is in processor slot 7 of a Cisco 7513.

• The system has the same image, rsp-k-mx11.2, in PC Card slot 0 of both the active and the standby

RSPs.

• You want to use Cisco IOS Release 12.1(12)E as backup to guard against software failures, so you

configure HSA operation for software error protection.