From: Mister T (romantic24hrs@gmail.com)
Date: Thu Nov 16 2006 - 01:18:16 ART
http://www.internetworkexpert.com/downloads/iewb-rs.sample.lab.pdf
On 11/16/06, Ken Diliberto <ken@kdmd.net> wrote:
>
> Can you post the entire lab so we can all have a look at it?
>
> Michael Zuo wrote:
> > Hi Group,
> >
> >
> >
> > I ran into an issue with the new sample lab with 4 switches and am
> > wondering if someone else has seen it or I've made a mistake somewhere:
> >
> >
> >
> > For the switching part, when all the trunk ports are set up, the links
> > between SW3 and SW4 (port 19, 20) will go into blocking because spanning
> > tree and trunk exists between SW1/SW2, SW1/SW4 and SW2/SW3. this means
> > VTP will not work between SW3 and SW4 even though it is part of the
> > requirement of section 1.1
> >
> >
> >
> > The catch is that even by adjusting port-priority and port-cost to make
> > the trunks between SW3 and SW4 come up, it will bring down trunk links
> > between another pair of switches. Because of the way the requirements
> > are set up (only vlan 102 can traverse between SW1 and SW4), no other
> > trunk links can be brought down without losing connectivity for at least
> > one vlan.
> >
> >
> >
> > The only solution I can see is PVST which is not part of the solution.
> >
> >
> >
> > Am I missing something very simple or maybe there is another workaround?
>
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