# Cisco DTP (Dynamic Trunking Protocol) Negotiation

**URL:** https://forum.networklessons.com/t/cisco-dtp-dynamic-trunking-protocol-negotiation/1083
**Category:** Lessons Discussion
**Created:** [December 26, 2016, 10:30pm UTC](https://forum.networklessons.com/t/cisco-dtp-dynamic-trunking-protocol-negotiation/1083 "2016-12-26T22:30:34Z")
**Posts on this page:** 1
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### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [February 3, 2017, 8:32am UTC](https://forum.networklessons.com/t/cisco-dtp-dynamic-trunking-protocol-negotiation/1083/12 "2017-02-03T08:32:01Z")

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Hello Ankit

When we say that DTP negotiation is ON, it means that the port is in a state where, if the proper DTP packets are sent/received, the port may change its trunking functionality. Negotiation is ON in the following states: **Dynamic Desirable, Dynamic Auto or Trunk.**

DTP negotiation is OFF when a port is in one of the following states: **Access or Non-negotiate.**

As for the exchanging of DTP frames, take a look at the following [NetworkLessons note](https://notes.networklessons.com/dtp-sending-of-frames) that explains when DTP messages are sent.

I hope this has been helpful!

Laz

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