From: Ron Lim (gottobeccie@gmail.com)
Date: Fri Aug 24 2007 - 07:17:10 ART
Hi All,
Maybe you wanted to do perform some QoS on Native VLAN, hence you need the
tag else no way for QoS.
Hope this helps.
Regards,
Ron
On 8/24/07, Joseph Brunner <joe@affirmedsystems.com> wrote:
>
> So if you have L3 switches, why not just make the SVI local to the clients
> in that vlan, and just route (instead of trunk) off the switch.
>
>
>
> The only time I would do what you said, is of course if my network was
> comprised of L2 only switches (2960's etc) and I had the SVI for the vlans
> on an upstream 3750, 6509, etc.
>
>
>
> -Joe
>
>
>
> _____
>
> From: Toh Soon, Lim [mailto:tohsoon28@gmail.com]
> Sent: Friday, August 24, 2007 2:58 AM
> To: Joseph Brunner
> Cc: sheherezada@gmail.com; Ajay Prakash; slevin kremera; Cisco
> certification
> Subject: Re: vlan dot1q tag native
>
>
>
> Hi Joe,
>
>
>
> I'm really talking about local VLANs, not end-to-end VLANs.
>
>
>
>
>
> Thank you.
>
>
>
> B.Rgds,
>
> Lim TS
>
>
>
> On 8/24/07, Joseph Brunner <joe@affirmedsystems.com> wrote:
>
> It's 2007, I used L3 routed links...
>
> Why do we ever need end to end vlans? Local vlan's only for me...
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Toh
> Soon, Lim
> Sent: Friday, August 24, 2007 2:30 AM
> To: sheherezada@gmail.com
> Cc: Ajay Prakash; slevin kremera; Cisco certification
> Subject: Re: vlan dot1q tag native
>
> Hi All,
>
> Thanks for sharing.
>
> I used to think that we can easily VLAN-hop across 802.1Q trunk by
> configuring different native VLAN at both ends. Having labbed it, I
> realize
> STP actually blocks off those inconsistent VLANs.
>
> In real-world, I typically set the native VLANs to a bogus non-routable
> VLAN
> and prune it ("switchport trunk allowed vlan remove...") from the trunk.
> What's your practice?
>
>
> Thank you.
>
> B.Rgds,
> Lim TS
>
>
> On 8/24/07, sheherezada@gmail.com <sheherezada@gmail.com> wrote:
> >
> > Yes, you use that when you do dot1q in dot1q (that's it, double
> > tagging), so that traffic in the native VLAN can be tunneled
> > correctly.
> >
> > HTH,
> >
> > Mihai Dumitru
> > CCIE #16616 (SP, R&S)
> >
> > On 8/24/07, Toh Soon, Lim < tohsoon28@gmail.com
> <mailto:tohsoon28@gmail.com> > wrote:
> > > Hi All,
> > >
> > > On the other way around, received untagged frames are considered to
> > belong
> > > to the native VLAN.
> > >
> > > Does anyone know the practicality of the "vlan dot1q tag native"
> command
>
> > in
> > > the real-world?
> > >
> > >
> > > Thank you.
> > >
> > > B.Rgds,
> > > Lim TS
> > >
> > >
> > > On 8/24/07, Ajay Prakash < <mailto:ajay.prakash@networkpeople.co.in>
> ajay.prakash@networkpeople.co.in> wrote:
> > > >
> > > > In 802.1q encapsulation, there is a native VLAN (Default VLAN 1).
> The
> > > > frames
> > > > destined for native VLAN are not tagged by the switch. If you issue
> > this
> > > > command then all frames including frames for the native VLAN will
> have
> > a
> > > > 812.1q header appended.
> > > >
> > > > Ajay
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of
> > > > slevin kremera
> > > > Sent: Friday, August 24, 2007 6:49 AM
> > > > To: Cisco certification
> > > > Subject: vlan dot1q tag native
> > > >
> > > > whats the use of this command ,what does it accomplish
> > > >
> > > >
> > _______________________________________________________________________
> > > > Subscription information may be found at:
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> > > >
> > > >
> > _______________________________________________________________________
> > > > Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >
> _______________________________________________________________________
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> > > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
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