RE: switchport trunk allowed vlan x

What output do you get from 'show interfaces trunk'?

I believe default vlans such as VL1, 1002-1005 etc are implicitly allowed.

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Vincent Tay
Sent: Saturday, 21 April 2012 4:49 PM
To: Marko Milivojevic
Cc: Ccielab_at_groupstudy.com
Subject: Re: switchport trunk allowed vlan x

Hi Marko,

Will it affect anything else if vlan 1 is only for native vlan? I have
tested it and CDP, VTP and etc untagged traffic still works. A bit of
confusion here. How about cos?

Regards
Vincent Tay

On Fri, Apr 20, 2012 at 11:15 PM, Marko Milivojevic
<markom_at_ipexpert.com>wrote:

> Transit traffic in VLAN 1 will mo longer work.
>
> --
> Marko Milivojevic - CCIE #18427
>
> :: This message was sent from a mobile device. I apologize for errors
> and brevity. ::
>
> On Apr 20, 2012, at 7:52, Vincent Tay <vtay.75_at_gmail.com> wrote:
>
> > Hi all,
> >
> > Still using native vlan 1 for trunking, what will happen if i don't
> > allow vlan 1 with switchport trunk allow vlan except 1?
> >
> > Regards
> > Vin
> >
> >
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Received on Sat Apr 21 2012 - 22:03:27 ART