Re: Local updater ID in VTP

To me, it is helpful to see where my switch has learned it's VTP info from
... even multiple L2 hops away, the remote switch will show that the
configuration was last modified by the IP of x.x.x.x .

This IP address is the VTP server's IP address, the IP used in the local
identifier. As you did below, you can set this to be a different interface
if you want, for management reasons it might be easier to see a loopback or
another IP present in remote switches vtp output.

Also (thinking out loud here) ... if your switch has learned about VLANs
from a different IP or a different switch, then this could indicate a config
problem or, perhaps you introduced a switch that had a higher config
revision number.

HTH,

Andrew

On Mon, Aug 31, 2009 at 2:41 PM, Anantha Subramanian Natarajan <
anantha.natarajan_at_gravitant.com> wrote:

> Hi All,
>
> I am trying to confirm my understanding on how Local Updater ID is choosen
> on the switch for the VTP.Kindly let me know your comments on the below
> order which I think may be the switch select the local updater ID
>
>
> 1) IP address of the interface specified in the "vtp interface <interface
> name>"
> 2) Lowest numbered VLAN interface found(Number of the vlan and not the ip
> address under the SVI is considered for choosing ..for example int vlan
> 10,int vlan 11...the switch selects the vlan 10 ip address irrespective of
> the ip addresses on the vlan 10 and vlan 11)
> 3) First layer3 interface found (Again the lowest number or lowest order
> of the layer three interface found ..for example loopback10,looback 11...it
> chooses the loopback 10 ip address)
>
> Was able to verify on the switch but wants to hear your comment,if I missed
> something.
>
> Thank You for the assistance
>
> Regards
> Anantha Subramanian Natarajan
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>

-- 
Andrew Lee Lissitz
all.from.nj_at_gmail.com
Blogs and organic groups at http://www.ccie.net