From: ccie2be (ccie2be@nyc.rr.com)
Date: Thu Oct 28 2004 - 21:55:02 GMT-3
Elliot,
In case you're not aware of this, once pruning is enabled, by default, all
vlans are prune eligible - that is any and all vlans will be pruned that
meet the condition needed for pruning. If there are some vlans which you
don't want to be pruned under any circumstances, you need to edit the prune
eligible list.
See this link for details:
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12120ea2/3550scg/swvlan.htm#wp1221846
Also, notice that each trunk can have it's own prune eligible list which is
independent of any prune eligible list applicable to other trunks and the
list is configured under an interface configured as a trunk.
Off-hand, I don't recall if the command should be or needs to be configured
on both sides of the trunk link or on which side of the trunk link it should
be configured on.
HTH, Tim
----- Original Message -----
From: "Elliott Reyes" <elliottreyes@adelphia.net>
To: <ccielab@groupstudy.com>
Sent: Thursday, October 28, 2004 8:26 PM
Subject: VTP pruning
> When you enable VTP pruning . You enable pruning globally correct 1st.
>
>
>
> SW1#vtp pruning
>
> Pruning switched on
>
> SW1#
>
>
>
> Under the trunk ports you enter.
>
>
>
> SW1(config-if)#switchport trunk allowed vlan ?
>
> WORD VLAN IDs of the allowed VLANs when this port is in trunking mode
>
> add add VLANs to the current list
>
> all all VLANs
>
> except all VLANs except the following
>
> none no VLANs
>
> remove remove VLANs from the current list
>
>
>
> SW1(config-if)#switchport trunk allowed vlan add ?
>
> WORD VLAN IDs of the allowed VLANs when this port is in trunking mode
>
>
>
> SW1(config-if)#switchport trunk allowed vlan add
>
>
>
>
>
> Here you either allow the vlans or remove the vlans. I understand that.
>
>
>
>
>
> Questions is this ?
>
>
>
> If I enable this on the server. Do I need to do go to each client and
remove
> the vlans if they have already all been propogated to the clients ????
>
>
>
>
>
>
>
> Elliott
>
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