Howto install new IOS 15.1 on 2911

[AndreasKlaus]

Hi,

i downloaded and transfered the new ios to the 2911, but no install routine started.

Hope soeone knows the solution.

regards

Andreas

[Somasundaram Jayaraman · Accepted solution]

Hi,

If the image is there in the flash then please follow the below steps.

Router(config)#no boot system

Router(config)#boot system flash:

wr mem

reload

++ You can also do a warm upgrade by following the below steps.

Router# reload warm file tftp:///

++ This command actually has a number of options such as scheduling and

creating a comment:

reload [/verify | /noverify] [warm [file url]]

[in [hh:]mm | at hh:mm [month day | day month]] [cancel] [text]

++ The file that you are upgrading from could be any valid source that

the router can access.

++ To reiterate, the reload warm file command allows the router to  read

and decompress the image while the router continues to process  packets.

++ You would be able to ping the router the whole time the image was  being downloaded

and decompressed. The router is only down for the very  short time while the

IOS image is overwritten with the new image.

++ Using warm reload is simple. You can configure the warm reboot functionality

with the warm reboot global command, like this

Router(config)# warm-reboot 10 uptime 10

++ This enables the router to reboot a maximum number of 10 times using

the warm reboot function and ensures that the router will sit for no

more than 10 minutes after an attempted warm reload that doesn't result

in a successful bootNext, you must do one clean, cold reload of the router.

++ After that, you can use the reload warm command to quickly reboot your router.

++ You can also use show warm-reboot to find the statistics  concerning how many

warm reloads have happened and how much space is  taken up by warm reload storage.

Here is what it looks like.

Router# show warm-reboot

Warm Reboot is enabled

Maximum warm reboot count is 10

Uptime after which warm reboot is safe in case of a crash is 10 (min

Statistics:

0 warm reboots due to crashes and 0 warm reboots due to requests have taken

place since the last cold reboot

1140 KB taken up by warm reboot storage

Router#

++ Other related commands are show warm-reboot and debug warm-reboot.

A warm reboot looks similar to a normal reboot, but there is no  initializing of

the memory, no ROMmon initialization, and no  decompressing of the IOS image.

Again, don't forget to use the reload warm command or else it is just a regular reload.

Hope this answers your question.

Cheers

Somu

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[Latchum Naidu]

Hi Andreas,

The ios install process wont start automatically.
You have to manually point the IOS image which you have on flash to booth with that from next booting.

If you give the following command on your router, it will show you the version

#sh flash
-#- --length-- -----date/time------ path
1     55204456 Mar 19 2010 06:13:44 +00:00 c2911-universalk9-mz.SPA.150-1.M1.bin
2         2903 Mar 19 2010 06:28:32 +00:00 cpconfig-29xx.cfg
3      2915328 Mar 19 2010 06:28:46 +00:00 cpexpress.tar
4         1038 Mar 19 2010 06:28:54 +00:00 home.shtml
5       115712 Mar 19 2010 06:29:02 +00:00 home.tar
6      1697952 Mar 19 2010 06:29:16 +00:00 securedesktop-ios-3.1.1.45-k9.pkg
7       415956 Mar 19 2010 06:29:28 +00:00 sslclient-win-1.1.4.176.pkg
8       294778 Jan 7 2011 10:46:12 +00:00 crashinfo_20110107-104611-UTC
9     69167644 Oct 16 2011 10:15:20 +00:00 c2911-universalk9-mz.SPA.152-1.T1.bin

130342912 bytes available (129830912 bytes used)

Now you have to choose the IOS image file to point that to boot from next reload like below...

Router(config)#boot system flash c2911-universalk9-mz.SPA.152-1.T1.bin
Router(config)#write mem
Router(config)#exit
Router#reload

Once the router reload is done then you can check whether your router booted with new IOS image or not with the following command.

Router#sh ver

Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.2(1)T1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Mon 19-Sep-11 17:58 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M1, RELEASE SOFTWARE (fc1)

DKIGNRTR01 uptime is 8 weeks, 2 days, 3 hours, 4 minutes
System returned to ROM by reload at 10:20:30 UTC Sun Oct 16 2011
System restarted at 10:23:35 UTC Sun Oct 16 2011
System image file is "flash:c2911-universalk9-mz.SPA.152-1.T1.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

Please rate the helpfull posts.
Regards,
Naidu.

[AndreasKlaus]

Thanks Somu,

your anwser was quite good and was the solution.

Have nice day

Andreas