From: Carlos G Mendioroz (tron@huapi.ba.ar)
Date: Fri Apr 04 2008 - 20:17:27 ART
Why would it stop forwarding the vlans ?
May be you meant "forwarding VTP info about vlans" ?
-Carlos
Luca Hall @ 04/04/2008 20:05 -0300 dixit:
> If they all know the same vlans and you change to whatever vtp mode it
> wont change the vlans and they will be forwarded, if you change the vtp
> domain
> on the transparent switches they will stop forwarding the vlans.
>
>
>
>> So basically is it safe to assume that regardless of the VTP version on
>> the 4 switches I can change a single switch or rather 3 of the from
>> client/server to transparent thus leaving one as server and it won't
>> mess up my VLAN settings?
>>
>> Thanks
>> -----Original Message-----
>> From: Gary Braver [mailto:gbraver@fastlanenetworks.com]
>> Sent: Friday, April 04, 2008 2:51 PM
>> To: 'Carlos G Mendioroz'; Athaide, Dwayne
>> Cc: 'groupstudy'
>> Subject: RE: VTP
>>
>> I painfully went through this.
>>
>> Your switch is in client mode. It has vlans automatically stored in the
>> vlan.dat file (received from the server).
>>
>> You change the connection to vtp mode transparent.
>>
>> Transparent mode can have vlans defined in the config or through the
>> vlan database. Since the vlan database exists the vlans will be loaded
>> from the vlan.dat file
>>
>> You reboot and the vlan.dat file is still there. You can even do a
>> write erase and the vlan.dat file will still be there.
>>
>> Wither later revisions of IOS You can delete the vlan.dat file and enter
>> all vlan info in the config directly. Believe the vlan info will still
>> be stored in the vlan.dat file but since all vlan config is in the main
>> config you could take the config to a new identical switch / replace the
>> switch without loosing all the vlan info.
>>
>>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>> Carlos G Mendioroz
>> Sent: Friday, April 04, 2008 1:07 PM
>> To: Athaide, Dwayne
>> Cc: groupstudy
>> Subject: Re: VTP
>>
>> Dwayne,
>> inline:
>>
>> Athaide, Dwayne @ 03/04/2008 10:57 -0300 dixit:
>>> I had asked a similar question pertaining to a scenario but did not
>> get
>>> a response so I am going to generalize the question .
>>>
>>>
>>>
>>> I have 4 switches SW1 (S)-SW2(S)-SW3(T)-SW4(S). All switches are
>>> trunked and belong in the same VTP domain.
>>>
>>>
>>>
>>> SW1, SW2, SW4 are Server
>>>
>>> SW3 is a Transparent switch.
>>>
>>>
>>>
>>> SW1(S)---Trunk-----SW2(S)----Trunk ------SW3(T)-------Trunk----SW4(S)
>>>
>>>
>>>
>>>
>>>
>>> Now say to start off all switches have VLAN's 1 thru 10. The switches
>>> are running VTP version 1. And VTP pruning is enabled.
>>>
>>>
>>>
>>> 1. Now say I build a new VLAN on SW1. Will that VLAN be
>>> propagated to Switch SW4.?
>>>
>>>
>>>
>>> My Answer :When I lab this up it did get propagated and this confused
>> me
>>> as I was under the impression that Version 1 VTP on a transparent
>> switch
>>> will not propagate the VLAN only VTP version 2 would.
>> AFAIK, main difference between v1 & v2 is token ring support.
>> Transparent should enable VTP to pass through, as it does according to
>> your lab.
>>
>>> 2. Say I have a Router A connected to Access port VLAN 10 on SW3
>>> and a routed port on SW2 . Should Router A be able to ping Router B
>> &
>>> vice versa thru the transparent switch?
>>>
>>>
>>>
>>>
>> RA-(VLAN10)------SW3----------Trunk----------------SW4(Vlan10)----------
>>> ----Routed port(SW2)
>>>
>>>
>>>
>>> I can although when I do a show int trunk on SW4 I show VLAN 10 to be
>>> pruned.
>>
>> Typo here ? You say "router port on SW2" and draw SW4.
>> If it is in SW2, prunned at SW4 will have no effect.
>> Also, prunning stops broadcast only, so if you ping from the prunned
>> side, you will lift the bann, so to say .
>>
>> -Carlos
>>
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>> _______________________________________________________________________
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>>>
>> --
>> Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html
>>
>> _______________________________________________________________________
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>> http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
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> http://www.groupstudy.com/list/CCIELab.html
>
-- Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
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