Re: VTP Domain name or no vtp domain name if running in

From: James Ventre (messageboard@ventrefamily.com)
Date: Sat Apr 22 2006 - 21:12:58 GMT-3


Try it for yourself.

"To autonegotiate trunking, the interfaces must be in the same VTP
domain. Use the trunk or nonegotiate keywords to force interfaces in
different domains to trunk. For more information on VTP domains, see
"Understanding and Configuring VTP."

Trunk negotiation is managed by the Dynamic Trunking Protocol (DTP). DTP
supports autonegotiation of both ISL and 802.1Q trunks."

http://www.cisco.com/en/US/products/hw/switches/ps663/products_configuration_guide_chapter09186a00800f0d62.html

James

Matt White wrote:

  I do not believe that to be correct. For VLAN ID to propagate form a
  server to a client, you ned the VTP domain to match.
  
  For DTP to work on a trunk, one needs to be switchport dynamic auto
  and the other end desirable. Trunk encapsulation will auto-negotiate
  as well if left to the default.
  
  DTP has nothing to do with VTP.
  
  On 4/22/06, James Ventre <messageboard@ventrefamily.com> wrote:

    Let me clarify a bit further:
    
    For DTP to form a trunk with the other end, your VTP domain needs to
    match on both ends. This would be an instance where you need to set
    the domain with a mode of transparent.

    James

    James Ventre wrote:

      For DTP to form a trunk it has to match on both ends of the link.

      Hash Aminu wrote:

        Hello GS,
        
        just to clear this issue if i am running in VTP Transparent mode , do
        i need
        to make sure that the VTP domain name is the same or configure it at
        all? i
        feel there is no need since i am not running VTP, but can anyone think of
        any situation where we need to configure the VTP domain name in
        Transparent
        mode .
        TIA
        
        Hash

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