vtp client failing to update

vtp client failing to update
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vtp client failing to update pfisterfarm 05-01-2008
Posted by pfisterfarm on May 1, 2008, 10:46 am
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What would be the main reason for vtp client failing to update? It has
the right domain name and a lower revision number. The server mode
switch is directly connected. The client side, a 3640 router, has just
an ip address, and the server side, a 3550 switch is set to mode
dynamic desirable. Why might be the problem?

Pure Networks
Posted by News Reader on May 1, 2008, 11:08 am
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pfisterfarm wrote:
> What would be the main reason for vtp client failing to update? It has
> the right domain name and a lower revision number. The server mode
> switch is directly connected. The client side, a 3640 router, has just
> an ip address, and the server side, a 3550 switch is set to mode
> dynamic desirable. Why might be the problem?

Don't use VTP here, so the following will likely be my only suggestions,
with no follow-up:

Has a VTP password been implemented?

Even less familiar with the following two. Maybe they are relevant,
maybe not.

Is VTP pruning being used?

Mis-match on VTP V2 Mode?

Best Regards,
News Reader

Posted by pfisterfarm on May 1, 2008, 11:45 am
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> Has a VTP password been implemented?
no.

> Is VTP pruning being used?
no.

> Mis-match on VTP V2 Mode?

No, both sides are v2

Posted by News Reader on May 1, 2008, 12:18 pm
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pfisterfarm wrote:
>> Has a VTP password been implemented?
> no.
>
>> Is VTP pruning being used?
> no.
>
>> Mis-match on VTP V2 Mode?
>
> No, both sides are v2

Again, outside of my element here.

Is the router configured for the VLAN on which the VTP exchange would occur?

Best Regards,
News Reader

Posted by Merv on May 3, 2008, 6:07 am
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> the server side, a 3550 switch is set to mode dynamic desirable


try setting trunk mode to non-neg

int <>
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonneg


after reconfiguring switch port as a nonneg trunk port, post the
output of show interface <> trunk




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