Hi
It means that your configuration was made on a different version of IOS than
you are running now. It is a standard warning that not all commands may be
understood by the current IOS.
For example... If you had IOS 12.0.x IP only and had configured NAT, then
later for some reason downgraded to IOS 11.3 IP only, your NAT configuration
would not work because NAT did not ship in IP only IOS until 12.0. Another
example is TACACS+, which is very different from one major version to the
next, even from minor version to minor version.
HTH
--
John Hardman CCNP MCSE
""Omer Ehsan Dar"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi all I keep on receiving this message on my router that the 12.1
> commands may not be executed properly
> what does this mean?
> Omer
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