From: Godswill Oletu (oletu@inbox.lv)
Date: Thu Dec 08 2005 - 09:49:53 GMT-3
When you tag one end, you have to tag the other end.
----- Original Message -----
From: "Gustavo Novais" <gustavo.novais@novabase.pt>
To: "John Matus" <John.Matus@tokiom.com>; "san" <san.study@gmail.com>
Cc: <ccielab@groupstudy.com>; <nobody@groupstudy.com>
Sent: Wednesday, December 07, 2005 3:15 PM
Subject: RE: No traffic on trunk without vlan header.
> Hi
>
> So may I conclude that for this specific task, both answers would be
> correct? Or by definition we should KISS* and go through vlan dot1q tag
> native.
> BTW, This is a global setting. Which means that if you tag one trunk's
> native vlan, you tag them all. That may be a constraint!
>
> Thanks for your replies
>
> Gustavo Novais
>
> *KISS -- Keep It Simple and Stupid -- do not start thinking things :)
>
>
> -----Original Message-----
> From: John Matus [mailto:John.Matus@tokiom.com]
> Sent: quarta-feira, 7 de Dezembro de 2005 20:09
> To: san
> Cc: ccielab@groupstudy.com; Gustavo Novais; nobody@groupstudy.com
> Subject: Re: No traffic on trunk without vlan header.
>
> since dot1q does not tag the natvie vlan, the easiest solution would be
> to
> tag the native vlan with the "vlan x tag native" commnand.
>
>
>
> Regards,
>
> John D. Matus
> Technical Support / PAS
> Fujitsu Consulting
> 626-568-7716
> John.Matus@tokiom.com
>
>
>
>
> san
>
> <san.study@gmail.
>
> com>
> To
> Sent by: Gustavo Novais
>
> nobody@groupstudy <gustavo.novais@novabase.pt>
>
> .com
> cc
> ccielab@groupstudy.com
>
>
> Subject
> 12/07/2005 11:55 Re: No traffic on trunk without
>
> AM vlan header.
>
>
>
>
>
> Please respond to
>
> san
>
> <san.study@gmail.
>
> com>
>
>
>
>
>
>
>
>
>
> Gustavo,
>
> My reading says that:
>
> VTP messages are multicast and a limit of one hop by cisco switches.
> Also VTP messages are encapsulated in default vlan (vlan 1). These
> messages flow only over trunks.
>
>
> /SAN
>
> On 12/4/05, Gustavo Novais <gustavo.novais@novabase.pt> wrote:
> > Hi,
> >
> >
> >
> > When faced with a question that states that we must "ensure that all
> > traffic that is sent over this link is tagged with a vlan header" and
> > the link is a dot1q trunk, the way I see it we have two options:
> >
> >
> >
> > We can change the trunk's native vlan and not allow it on the trunk.
> >
> > Or
> >
> > We can use the vlan dot1q tag native, and guarantee that there is no
> > untagged vlan on the trunk.
> >
> >
> >
> > I have two questions regarding this:
> >
> >
> >
> > What happens on both situations to DTP,VTP, etc traffic? Are their
> PDU's
> > encapsulated also?
> >
> > Why would we choose one method over another (besides the simplicity of
> > the latest)?
> >
> >
> >
> >
> >
> > TIA
> >
> > Gustavo Novais
> >
> >
> _______________________________________________________________________
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