Upgrading to newest IOS for 1720 router

[glennselser]

All,

I have a modular 1720 router that I need to get to the latest IOS. It currently has IOS 12.2 (46). The flash memory is 8MB. Where can I find a listing of what is the most current IOS I could upgrade this too? Please ask if there is something I did not post realted to this question.

Thanks

Glenn

[Reza Sharifi]

Glenn,

Have a look at this link:

If you want to move to a different IOS you need Min 16MB flash and 48MB memory

http://www.cisco.com/cisco/software/release.html?mdfid=268437925&flowid=7251&softwareid=280805680&release=12.4.25f&relind=AVAILABLE&rellifecycle=MD&reltype=latest

HTH

[glennselser]

I will look through the list, but are most IOS's over 12.2 going to require 16mb?

Thanks

[Reza Sharifi]

Yes, even 12.3 require 16Mb flash.

HTH

[glennselser]

Thanks for the response

[raga.fusionet]

Hi Glenn,

You might want to use the feature navigator, use the "search by platform" option.

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

You might need to upgrade your flash since you wont be able to upgrade to a new version with just 8MBs. I checked the latest of 12.3 for example and it already requires 16 MB.

HTH

Raga

[raga.fusionet]

Glenn, 12.3 has a few options if  you have 8Mbs but the feature set would be limited to IP Base.

[glennselser]

Thanks