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Default Administrative Mode in VTP?

A simple question.

I read that 2960 switches default to an administrative mode of "dynamic auto", meaning that (if two switches are interconnected) neither switch initiates the trunk negotiation process.

What is the default Administrative Mode for other switches in VTP?

2 REPLIES
Bronze

Re: Default Administrative Mode in VTP?

I believe you are talking about DTP.

I thought the default of older switches was dynamic desirable (3550 and older).

I think the newer switches (Newer than 3550) is dynamic auto.

The newer switches tend to a little more conservative.

Hall of Fame Super Bronze

Re: Default Administrative Mode in VTP?

3560 and 3750 are dynamic auto

Command Reference:

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_50_se/command/reference/cli3.html#wp1948171

The 6500 and 4500 are dynamic desirable

Command Reference:

http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s7.html#wp1013606

and good note as well on this reference:

Cisco Catalyst 6500/6000 Switches

The default mode is dependent on the platform; it should be either dynamic auto for platforms that are intended as wiring closets or dynamic desirable for platforms that are intended as backbone switches. The default for PVLAN ports is that no mode is set.

HTH,

__

Edison.

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