Figuring out IOS release numbers

[jamiegaylord]

Hey there,

I'm an auditor trying to figure out EOE/EOL IOS releases. I think I have issues with some of the releases we have. But before I make that comment on an audit I want to be certain.

I have a number of 2610XM's with 12.2.(13)T16. I think that version has reached it's EOE based on Product release lifecyle. Would this release be part of the 12.2T family? Any help would be fantastic.

Thanks

Jamie

[thisisshanky]

I am still able to download this IOS. Here is the list of retired IOSes.

http://www.cisco.com/kobayashi/library/iosplanner/retired.shtml

This list does not show the IOS you have listed.

Even though the link below shows 12.2T train was EOE Nov 2004.

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/prod_bulletin0900aecd801eda8a.html

EOE means they wont make any patches, updates to this train any more.

You may still find it for download, as long as the version is not deferred.

I would suggest you migrate to 12.4 if you want support on any issues.

Sankar

PS: please remember to rate replies!

[jamiegaylord]

Thanks for the link. I thought it was general information page but apparently I don't have access to it. Does the "T" at the end mean train?

To clarify, just because I can download the IOS does not mean that fixes are available correct?

[thisisshanky · Accepted solution]

You may need CCO access to view the first link.

You are correct. According to the last link I posted, it says 12.2T train EOE was Nov 2004. T stands for the T train.

HTH

PS: please remember to rate posts!

[jarathbu · Accepted solution]

Hello,

Early in Cisco’s history, the need for at least two trains for releasing Cisco IOS Software emerged:

1) A train for bug fixes—mainline

2) A train for bug fixes and new features—T train

With two trains, Cisco could introduce new features in a Cisco IOS release from one train without affecting the code base of the other train.

Mainline trains, such as 12.2, are built from previous generation T trains, such as 12.1T. Mainline trains, such as 12.2, are parents of other trains, such as 12.2T

Additional information regarding IOS can be found in the following white paper:

Cisco IOS Reference Guide

http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_white_paper09186a008018305e.shtml

Hope this answers your question.

Regards