From: Shanky (shankyz@gmail.com)
Date: Fri Aug 11 2006 - 04:19:47 ART
Hi,
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.
I can interpret Task 1 in 2 ways ..
1. switchport trunk allowed vlan 8 ... will allow ONLY vlan 8 traffic
2. switchport trunk pruning vlan 2-7, 9-1001 will allow vlan 1 and vlan 8
traffic (vlan 1 cant be pruned).
So if the requirement is to allow only vlan 8 traffic , we should be using
switchport trunk allowed vlan 8.
Shanky
On 8/11/06, Duane Dewitt <Duane.Dewitt@za.verizonbusiness.com> wrote:
>
> Hi
>
> VTP Pruning requires a VTP domain on all switches ie VTP Server/Client
> running. When VTP Transparent is used VTP pruning is not supported so
> you need to manually allow specific VLAN's on trunk ports when you want
> to restrict things.
>
> At least that's the way I remember it :)
>
>
> Regards
> Duane
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Tim Chan
> Sent: 11 August 2006 08:22 AM
> To: ccielab@groupstudy.com
> 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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