Re: switchport trunk allowed vlan x

Have your reviewed this?

http://blog.ipexpert.com/2011/01/19/old-ccie-myths-vlan-1/

On Sat, Apr 21, 2012 at 7:03 AM, Aaron Riemer <ariemer_at_amnet.net.au> wrote:

> 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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>
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Received on Sat Apr 21 2012 - 15:37:24 ART