Re: MST error

Hi Raheel,

As i understand, the default MST version (i.e. standard or
pre-standard) will depend on your IOS version.
Originally IOS only supported the pre-standard, then once the standard
was finalised IOS was changed to support the standard version and run
this as the default.
Obviously pre-standard and standard are not compatible, so that's why
you're prompted with the warning message.
I expect you won't run into in the Lab as the switches should run the
same version.

What IOS versions are you using on your switches?

-- 
Regards,
Iwan Hoogendoorn
CCIE #13084 (R&S / Security / SP)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
On Mon, Aug 24, 2009 at 6:42 PM, Raheel
Muhammad<raheel.muhammad_at_gmail.com> wrote:
> Dear All,
>
> Might be a basic question but could not figure out, please explain what is
> this error.
>
> *Mar  1 02:31:20.391: %SPANTREE-3-PRESTD_NEIGH: pre-standard MST interaction
> not configured (Port-channel2). Please, configure: 'spanning-tree mst
> pre-standard' on ports connected to MST pre-standard switches.
>
> Regards,
> Raheel
>
>
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-- 
Regards,
Iwan Hoogendoorn
CCIE #13084 (R&S / Security / SP)
Sr. Support Engineer  IPexpert, Inc.
URL: http://www.IPexpert.com
Blogs and organic groups at http://www.ccie.net