Cisco ASR 903 Software Upgrade
▀ Software Boot up options
▄ Cisco ASR 903 Router Design and Deployment Guide
Sub package mode
Sub-package mode is achieved when the system is initially booted with a packages.conf file. A packages.conf file
is created when a consolidated package is expanded using the request platform software packages expand
command.
Booting in Sub-Package Mode
Step 1 Set the configuration register boot field to boot the system image as specified by the boot system command in the
NVRAM configuration. (0x2)
Router# configure terminal
Router(config)# config-register 0x2
Router(config)# end
Step 2 Expand the consolidated image which has previously been copied to the system bootflash. In a dual RP system, the
consolidated image should exist on, and be expanded on both the active and standby RP bootflash.
It is good practice to create a separate directory for ISSU and expand the image in that directory. After expanding
the consolidated package, the original package will exist as well as sub package files and a packages.conf file that
can be used for booting.
Important: Do not copy the packages.conf file to a new directory after expanding the package. It is
required that the packages.conf file and sub package files exist in the same directory.
Router# mkdir issu
Create directory filename [issu]?
Created dir bootflash:/issu
Router# copy filename directory
Example:
Router# copy asr903rsp1-adventerprisek9.upgrade.bin bootflash:/issu
Router# request platform software package expand file bootflash:issu/asr903rsp1-
adventerprisek9.base.bin
Router# request platform software package expand file stby-bootflash:issu/asr903rsp1-
adventerprisek9.base.bin
Step 3 Configure the NVRAM boot system command to boot the packages.conf file.
Router# configure terminal
Router(config)# boot system bootflash:issu/packages.conf
Router(config)# end
Router# write mem
Step 4 Reload the router.
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