Feature differences in IOS Version

[angel-moon]

Hello all,

On the ASAs if there has been a command change that is different in a newer version of code when you upgrade the code the commands are converted to match what the new commands are in the newer version.  Will routers do the same or will they just ignore anything that does not work on teh new IOS?

Thanks in advance.  replies rated

[Joseph W. Doherty · Accepted solution]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Cisco routers and switches generally work the same.  I.e. moving up, new versions will usually recognize older commands and convert.  Usually, only if you've jumped lots of versions might the newer not recognize older commands.