From: Swaroop Potdar (swarooppotdar@hotmail.com)
Date: Tue Aug 10 2004 - 17:22:25 GMT-3
Hi,
Like CDP, VTP is also independent of VLAN's...a layer 2 messaging
protocol...
So your VTP database gets populated with the vlans configured across your
VTP domain irrespective of us clearing the trunk with unwanted VLAN's.
But even in this case as Brian mentioned data would never pass on the
trunks..you can test it out.
BTW...when you mentioned it was possible with the old cat os...can u check
whether then VTP was disabled ie; both the distribution and access were in
transparent mode...in that case only it will show the locally configured
vlans...
VTP would be generally disabled if its a multi vendor integration as VTP is
cisco proprietary.
Thanks for your time...
Thanks,
Swaroop.
----- Original Message -----
From: Brian McGahan <bmcgahan@internetworkexpert.com>
To: Padhu <ccie8340@yahoo.com>; <ccielab@groupstudy.com>
Sent: Friday, August 13, 2004 10:34 AM
Subject: RE: Clearing VLANs on Trunk problem - Still shows all VLANs active
on downstream
> Removing the VLAN from the trunk link does not stop the VLAN
> information from being propagated via VTP. Try assigning a port in one
> of the removed VLANs in the downstream switch. It should not be able to
> communicate with the upstream ones.
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
> 24/7 Support: http://forum.internetworkexpert.com
> Live Chat: http://www.internetworkexpert.com/chat/
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Padhu
> > Sent: Friday, August 13, 2004 12:12 PM
> > To: ccielab@groupstudy.com
> > Subject: Clearing VLANs on Trunk problem - Still shows all VLANs
> active on
> > downstream
> >
> > Hello,
> >
> > I have a 2970 switch which is trunked to a 6513 distribution. On the
> > trunk, i
> > have defined the list of
> > VLANs to pass through to the 2970 however all VLANs are showing up in
> the
> > downstream 2970.
> > 6513 is running Native IOS 12.2(17)SXB1 on Sup720. In the older
> hybrid
> > code
> > once vlans were
> > cleared off trunks, it pretty much allowed only the ones not
> cleared....So
> > not
> > sure why the native IOS
> > is doing this differently. If anyone has seen this, appreciate your
> > thoughts.
> > Thanks
> >
> > Cheers,Padhu
> >
> >
> >
> > > >>here is the config:
> > > 6513_DISTRIBUTION_01#sh run int gigabitEthernet 10/48
> > > >>Building configuration...
> > > >>Current configuration : 268 bytes
> > > >>!
> > > >>interface GigabitEthernet10/48
> > > >> description Connection from 10/48 to
> > PIX_VPN_DMZ_INTERNET_Network via 2970 Switch Port 24
> > > >> no ip address
> > > >> switchport
> > > >> switchport trunk encapsulation dot1q
> > > >> switchport trunk allowed vlan 1,47,60,441,916,932
> > > >> switchport mode trunk
> > > >>end
> > > >>
> > > >>now on the downstream 2970: ( just a page pasted
> > here...actually
> > shows all vlans active though)
> > > >>SSB2970INTERNET>show vlan
> > > >>VLAN Name Status Ports
> > > >>---- -------------------------------- ---------
> > > >>-------------------------------
> > > >>1 default active Gi0/21,
> > Gi0/22,
> > Gi0/23
> > > >>12 SERV_012 active
> > > >>13 SERV_013 active
> > > >>14 SERV_014 active
> > > >>15 SERV_015 active
> > > >>16 STUD_016 active
> > > >>17 STUD_017 active
> > > >>18 OLDM_018 active
> > > >>19 OLDM_019 active
> > > >>20 OLDM_020 active
> > > >>21 OLDM_021 active
> > > >>22 PEMB_022 active
> > > >>23 PEMB_023 active
> > > >>24 PEMB_024 active
> > > >>25 PEMB_025 active
> > > >>26 PHYS_026 active
> > > >>27 PHYS_027 active
> >
> >
> _______________________________________________________________________
> > Please help support GroupStudy by purchasing your study materials
> from:
> > http://shop.groupstudy.com
> >
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Fri Sep 03 2004 - 07:02:45 GMT-3