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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 6 Software Upgrade
Upgrading the Cisco IOS image
Verifying checksum... OK (0xC7E6)
30551884 bytes copied in 199.636 secs (153038 bytes/sec)
Router#
Step 6 Verify the Cisco IOS image in the file system.
Router# dir flash:
Directory of flash:/
1 -rw- 30551884 <no date> asr901-universalk9-mz.151-2.SNG
100401148 bytes total (69849200 bytes free)
Router#
Router# verify flash:asr901-universalk9-mz.151-2.SNG
File system hash verification successful.
Step 7 Verify the Configuration Register.
Use the show version command to check the config-register value. The value is displayed in the last line
of the show version output. It should be set to 0x2102.
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# config-register 0x2102
Router(config)#^Z
Step 8 Ve rify t h e Boot Va ri a b l e
The router tries to boot with the first file in the Flash. If the first file is not the Cisco IOS Software image,
you need to configure a boot system statement in order to boot the specified image. If there is only one
file in Flash and it is the Cisco IOS Software image, this step is not necessary.
Router#show run | inc boot
boot-start-marker
boot system flash asr901-universalk9-mz.151-2.SNG.fc1
boot-end-marker
Router#
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#no boot system
Router(config)#boot system flash asr901-universalk9-mz.151-2.SNG
Router(config)#end
Router#
Router#show run | inc boot
boot-start-marker
boot system flash asr901-universalk9-mz.151-2.SNG
boot-end-marker
Router#
Step 9 Save the configuration and reload the router.
Router# write memory
Router# reload
Proceed with reload? [confirm]
Jul 24 20:17:07.787: %SYS-5-RELOAD: Reload requested by console. Reload Reason:
Reload Command.
Step 10 Verify the Cisco IOS upgrade.