Re: Encapsulation on 4500 series

Very likely because the model/version you're using doesn't support ISL
as an alternative to ISL.

--
Marko Milivojevic - CCIE #18427 (SP R&S)
Senior Technical Instructor - IPexpert
On Tue, Oct 18, 2011 at 06:21, Don Rajaratne <don.rajaratne_at_gmail.com> wrote:
> Hi Guys,
>
> Just wanted to find out whether you have experience why 'switchport trunk
> encapsulation dot1q' is not supporting 4500 series switches run on IOS 15.x
> version? I enable the 'switchport mode trunk' as well.
>
> I checked with normal 3560. its accepting encapsulation.
>
> Thanks
>
> Don
>
>
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