From: Network places (uniquemoonlight@gmail.com)
Date: Sun Mar 22 2009 - 12:33:11 ART
Well this is wat i got when i asked the same on the IE forums word of wisdom
"You would need to draw out your switches and trunk links first. Then you
need to write down the vlans used on the ports on each switch. Since all
switches are in transparent mode, each switch can be configured with only
the vlans needed.
If all ports in a vlan (including any SVIs) are on the same switch, that
vlan does not need to be configured on any other switch.
If all ports in a vlan (including any SVIs) are on adjacent switches with a
forwarding trunk link between them, the vlan only needs to be configured on
those switches.
If a vlan has ports (including any SVIs) on two or more switches, and the
trunk link needs to transit a switch with no ports in the vlan, the transit
switch, as well as the switches with ports in the vlan will need to have the
vlan configured."
Hope it helps.
Thanks
On Sat, Mar 21, 2009 at 5:30 PM, Salah ElShekeil
<salah.elshekeil@gmail.com>wrote:
> simply SW1 is the transite path so there should be a spannig tree instanse
> for this vlan along the path.
>
> try to remove vlan 43 form SW1 the try to ping from R4 to BB3, you won't be
> able,
>
> why? because SW1 is in the middle between SW2, SW3 so there should be a
> spanning tree instant for this vlan,
>
> in the transit path,
>
> HTH
>
> Salah
>
> On Sat, Mar 21, 2009 at 3:21 PM, itsfortarget iwillgetit <
> itsfortarget@gmail.com> wrote:
>
> > Dear Experts,
> > In IE expert volume 1 version 5, task 1.9 ( bridging and switching ), can
> > any body tell why the vlan 43 is created in SW1.Tasks asks to make SW1 in
> > VTP transparent mode, but vlan 43 is not required in SW1 , it only exist
> in
> > SW2 and Sw3. For VTP to propagate vlan info from server to client , if
> > a transparent mode switch exist between server and client as transit .Is
> > transparent switch should have the vlan exist ??
> >
> >
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> >
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