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Upgrade Option 4: ESR-PRE2 Upgrade with RPR Switchover

Insert the second ESR-PRE1 into the empty slot. If it is not configured for autoboot, boot the correct

Step 3

image from the ROM monitor prompt. The second ESR-PRE1 will come up as the standby in the

configured mode.

You have now reverted to a dual-ESR-PRE1 redundant system.

Upgrade Option 4: ESR-PRE2 Upgrade with RPR Switchover

This procedure assumes the following configuration:

•

This upgrade procedure is service affecting. It requires an RPR switchover from the active to the standby

Note

PRE. During the switchover in

To perform the upgrade, follow these steps:

Load the appropriate 12.2(28)SB image from the TFTP server into bootflash on both ESR-PRE2s.

Step 1

Step 2

If the startup configuration is not up to date, save the running configuration using the write-memory

command.

Copy the startup configuration from the active ESR-PRE2 to a disk or TFTP server to save it for possible

Step 3

rollback.

At the console, use the boot system bootflash:image_name command to edit your boot system variable

Step 4

to point to the 12.2(28)SB image in bootflash. Save the running configuration using the write memory

command.

Use the show bootvar command to verify that the boot system variable has been altered appropriately

on both the active and standby ESR-PRE2s.

If you do not want to make further changes to the startup configuration for the new command set offered

by release 12.2(28)SB, skip to

In some older releases, the configuration does not explicitly specify the redundancy mode. If your

Note

current configuration is one of these, and you want RPR+ operation with release 12.2(28)SB, you must

add the line mode rpr-plus after the line that specifies redundancy in the configuration on the TFTP

server. Release 12.2(28)SB defaults to SSO mode unless it is explicitly configured for RPR+.

Your startup configuration now reflects the altered boot system image. Copy it to the TFTP server and

Step 5

make any other needed edits. Then copy the altered configuration from the server to the startup

configuration on the active and standby ESR-PRE2s using the copy tftp startup and copy tftp

stby-nvram:startup-config commands. Verify that the startup configuration has been copied to both the

active and the standby NVRAM using the dir command and comparing file size.

Step 6

Verify again that the boot image and config-register are set appropriately using the show bootvar

command.

Upgrading to Cisco IOS Release 12.2(28)SB on a Cisco 10000 Series Router

Cisco 10000 series chassis with two installed ESR-PRE2 processors

active and standby ESR-PRE2s set for autoboot

Release 12.3(7)XI2 or later

Step

8, the router will not be available for user traffic.

Step

OL-8833-01