Re: 3550 why does vlan int go down

From: chidambaram sakthivel (sakthivelc@indiainfo.com)
Date: Wed Oct 03 2007 - 00:00:50 ART

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Hi Navid,

I feel that both the switches should be configured for same native Vlan either 1 or 2.
Because the untagged frames from sw1 Vlan1 will be forwarded to Vlan2 of sw2, it will create
problems what you observe now.

In Dot1Q encapsulation the native Vlan should be configured same on the switches.

Thanks,
Sakthivel.C

> ----- Original Message -----
> From: xdsgrrr <xdsgrrr@consultcommerce.com>
> To: ccielab@groupstudy.com
> Subject: Re: 3550 why does vlan int go down
> Date: Tue, 02 Oct 2007 10:58:16 +0300
>
>
> Check with show interface trunk and see that evrything is ok with vlan
> 1 :)) and use show spanning-tree vlan 1 br to verify that port is in
> forwarding state for this vlan
> br,
> Atanas Yankov
> On Tue, 2007-09-25 at 11:26 +0200, Navid Daghighi wrote:
> > Hi,
> >
> > In this simple example, where I configured a mismatch native vlan :
> >
> > sw 1 : dot1Q, native vlan = 1
> > sw 2 : dot1Q, native vlan = 2
> >
> > SH IP INT BRIEF shows that :
> > fa0/x stays up/up
> > vlan1 goes up/down
> >
> > What is the logic behind this behavior ?
> > I would have expected the fa0/x to go up/down !
> >
> > Thanks,
> > Navid
> >
> > _______________________________________________________________________
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>
> _______________________________________________________________________
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>

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• Next message: knight knight: "Re: Only Slightly OT: Overlapping Address Space, Unnumbered,"
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