From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Fri Aug 13 2004 - 14:34:05 GMT-3
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
>
>
This archive was generated by hypermail 2.1.4 : Fri Sep 03 2004 - 07:02:43 GMT-3