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Updating System Image Without Rebooting Cisco Router

Hello Experts,

I recently formatted the flash drive of an 1800 router and replaced it with an updated image. However, the new features within the new image aren't reflected in the router. I believe that this is because a reboot would be required for the updates in the new image to be reflected in the router i.e. the image needs to be added to the system.

Can someone tell me to get the image to the system without a reboot and if by doing so I would get all the new features from the image.

For example, the show version below shows the old image in the system as

flash:c181x-advipservicesk9-mz.124-6.T7.bin

Whereas the new image is on the flash as

c181x-advipservicesk9-mz.124-24.T2.bin

I was thinking of doing a:


copy tftp flash:c181x-advipservicesk9-mz.124-24.T2.bin system:c181x-advipservicesk9-mz.124-24.T2.bin

If I do the above will I get the features with out showing a reboot?

DM001#show version
Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(6)T7, RELEASE SOFTWARE (fc5)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Thu 29-Mar-07 02:54 by khuie

ROM: System Bootstrap, Version 12.3(8r)YH12, RELEASE SOFTWARE (fc1)

Brislington_DM001 uptime is 2 days, 1 hour, 14 minutes
System returned to ROM by power-on
System restarted at 08:30:12 BST Mon Feb 25 2013
System image file is "flash:c181x-advipservicesk9-mz.124-6.T7.bin"

Cisco 1812 (MPC8500) processor (revision 0x400) with 118784K/12288K bytes of memory.
Processor board ID FCZ1218130V, with hardware revision 0000

10 FastEthernet interfaces
1 ISDN Basic Rate interface
31808K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

Brislington_DM001#show flash:
-#- --length-- -----date/time------ path
1     23621284 Feb 26 2013 11:40:12 +00:00 c181x-advipservicesk9-mz.124-24.T2.bin

Cheers

Carlton

2 Replies 2

Giuseppe Larosa
Hall of Fame
Hall of Fame

Hello Carlton,

a reboot is needed to have the router to load the new image that you have placed in the flash.

There is no other way to do this.

The IOS image file is actually compressed and it is expanded in RAM at boot time.

Schedule a maintenance window for the reload.

>> copy tftp flash:c181x-advipservicesk9-mz.124-24.T2.bin system:c181x-advipservicesk9-mz.124-24.T2.bin

stay away from this kind of attempts.

Hope to help

Giuseppe

Giuseppe,

Point taken.

Thanks

Carlton