From: Jian Gu (guxiaojian@gmail.com)
Date: Sat May 20 2006 - 14:13:28 ART
Sorry I wasn't reading carefully( and that will kill me in the real lab).
On 5/20/06, Jian Gu <guxiaojian@gmail.com> wrote:
>
> how about simply config "vlan dot1q tag native"?
>
> Quote from Cisco Document Online:
> vlan dot1q tag native
>
> Use the *vlan dot1q tag native *global configuration command to enable
> tagging of native VLAN frames on all IEEE 802.1Q trunk ports. Use the *no
> *form of this command to return to the default setting.
>
>
> On 5/20/06, Gianpietro Lavado <gianpietro1@gmail.com> wrote:
> >
> > Hi Radoslav,
> >
> > I think that would be a valid solution too, because they're only telling
> > you to tag every vlan in the trunk. If they told you something
> > additional
> > like 'should not use the command 'vlan dot1q tag native'' (as IE does in
> > a
> > later lab) or to 'use Cisco's propietary trunking protocol', only then
> > the
> > only valid solution would be ISL for this case...
> >
> > However, your email has made me think further, and that phrase "tagged
> > with
> > VLAN header" makes me remember that ISL actually adds an additional
> > header
> > to the frame, but dot1q only tags the existing header...so maybe when
> > they
> > say "vlan header" thay are asking for the additional ISL header instead
> > of
> > tagging the existing one...any ideas?
> >
> >
> > Gianpietro
> >
> >
> > On 5/20/06, Radoslav Vasilev <deckland@gmail.com> wrote:
> > >
> > > Hi Group,
> > >
> > > This one should be easy and still it got me thinking:
> > >
> > > The task is to create a trunk interface between two switches with the
> > > requirement of "all the trafifc should be tagged with VLAN header".
> > >
> > > The solution from InternetworkExpert (lab 2, task 1.2) is ISL.
> > > My question: could a dot1q trunk be a solution, if the addtional
> > ``vlan
> > > dot1q tag native`` command is used?
> > >
> > > According to the docs, the effect will be tagging on egress port and
> > > dropping untagged native vlan frames on ingress port.
> > >
> > > What do you think?
> > >
> > >
> > > Rado
> > >
> > >
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