Re: trunk allowed vs pruning

From: Tim Chan (timanji@yahoo.com)
Date: Fri Aug 11 2006 - 18:19:47 ART


Thanks everyone!

-Tim

----- Original Message ----
From: kwasi-ccie@comcast.net
To: Godswill Oletu <oletu@inbox.lv>; Tim Chan <timanji@yahoo.com>; ccielab@groupstudy.com
Sent: Friday, August 11, 2006 10:42:41 AM
Subject: Re: trunk allowed vs pruning

You only need to remove vlan 8 from the prune eligible list on sw1 port fa0/13 to solve problem 1 (switchport trunk pruning vlan remove 8). Problem 2 is already solved by the vtp pruning that you enbaled on both switches. You do not need to play with the vtp allowed list to solve these 2 problems. Test it out.

-------------- Original message --------------
From: Godswill Oletu <oletu@inbox.lv>

> Tim,
>
> The solution you provided will only take care of the first task, once VLAN 8
> is removed from the prunning eligible list of interface fa0/13, the switch
> will continue to receive traffic for VLAN 8 regardless of local assignment
> or not.
>
> For the second task, you have to remove VLAN 8 from the VLAN allowed list on
> interfaces fa0/14 & fa0/15.
>
> HTH
>
> Godswill Oletu
> CCIE #16464
>
>
> ----- Original Message -----
> From: "Tim Chan"
> To:
> Sent: Friday, August 11, 2006 2:21 AM
> Subject: trunk allowed vs pruning
>
>
> > Hi all,
> >
> > I keep confusing myself and need some clarification.
> >
> > What's the relationship between "vtp pruning" and "switchport trunk
> allowed"?
> >
> > In one of the workbook labs, one of the tasks states:
> > 1. although it does not have it locally assigned ensure that SW1 receives
> traffic for vlan 8 over Fast0/13
> > 2. traffic for vlan 8 should not be received over any of the other trunk
> links.
> >
> > (The two switches are trunked together on Fast0/13-15 using dot1q.)
> >
> > So my thinking is to do "switchport trunk allowed vlan 8" on fast0/13 and
> to not allow it on 14 & 15.
> >
> > But the solution says the answer is "switchport trunk pruning vlan
> 2-7,9-1001".
> >
> > How does this solution solve either of the two tasks?
> >
> > Please advise,
> > -tim
> >
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>
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