RE: Switching question

Interesting, I have a similar situation:
My company often hosts meetings at convention centers and we're now setting up our own access routers, switches and VLANs to cut costs.
If I'm using a 3550 as my core switch for inter-vlan routing between my 2960's, and the vendor is just providing me point-to-point connections terminating thru their various switches, there must be this additional configuration on their switches to allow my tagged VLAN traffic to pass, correct?

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Johnny B CCIE
Sent: Thursday, October 22, 2009 10:52 PM
To: ccielab_at_groupstudy.com
Subject: Re: Switching question

Overcomplication can lead to "under" understanding. Yes if you are
trunked it will work. And if you don't have vlan 10 on Sw2 and are
pruning for example or if the switch is transparent for example you
may find that it is "not working" when technically it is working but
you asked it to do something you did not want it to do.

Solutions:

Disable VTP Pruning or just don't enable it in the first place.
Create the vlan on all three switches and verify it is there.
Make vlan 10 pruneineligible.

The other fun command part is when you can see the vlan when you
perform a show interface vlan brief and still cannot communicate. One
of the above will fix the problem unless you have auto and desirable
on your ports that think they are negotiating but need a little help
to work quite right. Change to compatible DTP types and everything
starts to work.

On Thu, Oct 22, 2009 at 8:27 PM, <get_ccie_at_hotmail.com> wrote:
> Hi group,
>
> i have 3 switches
>
> SW1---SW2---SW3
>
> trunks are in between, ONLY SW1&3 has the VLAN 10
>
> now if a 2 clients in vlan 10, one on SW1 and the other on SW3 wants to
> communicate, can they do it without creating vlan 10 on SW2 ??
>
> the first thought was yes, but it seems that it didn't, so any explanation ??
> shouldn't this traffic be carried (VLAN 10) between SW1&3 through the trunk int
> of SW2 ??
>
> Regards
>
>
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Received on Fri Oct 23 2009 - 09:40:03 ART