From: Elliott Reyes (elliottreyes@adelphia.net)
Date: Sat Oct 30 2004 - 13:58:05 GMT-3
Hmm ok. Gotcha.
Thanks,
Elliott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Carlos G Mendioroz
Sent: Saturday, October 30, 2004 4:30 AM
To: ccie2be
Cc: Elliott Reyes; ccielab@groupstudy.com
Subject: Re: VTP pruning
Related to pruning, if a lab requires not to send vlan traffic where
it's not needed, and you have a trunk to a router, then you have to use
vlan allowed on that trunk, cause routers do not speak VTP...
ccie2be wrote:
> 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/s
wvlan.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
>>
>>_______________________________________________________________________
>>Subscription information may be found at:
>>http://www.groupstudy.com/list/CCIELab.html
>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
-- Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
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