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Beginner

VTP mode OFF

Hi Experts,,

If VTP is not running in a network , is there any problem in using VTP MODE OFF  in the switches ? or still we should use VTP MODE TRANSPARENT.

thanks

1 ACCEPTED SOLUTION

Accepted Solutions
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Hall of Fame Expert

Hi,

Hi,

If you are not using VTP, you can simply use mode off. Transparent and off behave the same way:

Off (configurable only in CatOS switches)—In the three described modes, VTP advertisements are received and transmitted as soon as the switch enters the management domain state. In the VTP off mode, switches behave the same as in VTP transparent mode with the exception that VTP advertisements are not forwarded.

http://www.cisco.com/c/en/us/support/docs/lan-switching/vtp/10558-21.html#vtp_modes

HTH

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9 REPLIES 9
Highlighted
Hall of Fame Expert

Hi,

Hi,

If you are not using VTP, you can simply use mode off. Transparent and off behave the same way:

Off (configurable only in CatOS switches)—In the three described modes, VTP advertisements are received and transmitted as soon as the switch enters the management domain state. In the VTP off mode, switches behave the same as in VTP transparent mode with the exception that VTP advertisements are not forwarded.

http://www.cisco.com/c/en/us/support/docs/lan-switching/vtp/10558-21.html#vtp_modes

HTH

View solution in original post

Highlighted
Beginner

Re: Hi,

I have a 6504 (IOS) that I set to vtp mode off (don't need vtp), and after the reload it is automatically set to server.

 

Any idea please?

Highlighted
Hall of Fame Expert

Re: Hi,

Hi,

Configuration is saved in NVRAM and should not change after a reload. Can you post the output of "sh ver"?

HTH

Highlighted
Beginner

Re: Hi,

Thanks, don't have access to that, are you looking for something in particular?

Highlighted
Hall of Fame Expert

Re: Hi,

Hi,

Yes, I am looking for the config-register info. It should be 0x2102.

HTH

Highlighted
Beginner

Re: Hi,

it is that way.

Highlighted
Hall of Fame Expert

Re: Hi,

Ok, than the config should stay the same no matter how many times you reboot the switch. It may also be a bug in the version of the software you are running.

HTH

Highlighted
Beginner

Re: Hi,

Thanks. 

Well a diff 6504 running the same IOS doesn't have this behavior...This one is connected to the network but there is no other switch there. The 1st one having the issue is connected to a network where there are other switches.

Still when you set it off, id should stay off regardless of other switches have the vtp set to, correct?

Highlighted
Hall of Fame Expert

Re: Hi,

Still when you set it off, id should stay off regardless of other switches have the vtp set to, correct?

That is correct. Once you configure it and save it, it should not change regardless of how the other switches are configured.

HTH

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