Switchport mode commands that turn off DTP

[news2010a]

Hi there, this is a question from a book. Is the answer from the exercise below complete? In addition to the answer below, I would also include "switchport mode trunk;switchport nonegotiate". Please let me know if I am missing something and the book is right.

Question:What is the correct command to set the

DTP mode of a switch port to OFF?

Answer from the book:switchport mode access

[Peter Paluch]

Hello,

The DTP packets are not sent in these three circumstances:

1.) Either the port is a static access port configured by the command switchport mode access

2.) Or the port is a static trunk port configured with the command switchport mode trunk and at the same time, the DTP negotiation is deactivated using the command switchport nonegotiate

3.) The port is a routed port configured with the command no switchport

Best regards,

Peter

[babaei.saeed]

The DTP negotiation goes off in these situations:

1-     switchport nonegotiate

2-     Switchport mode access

3-     Switchport mode dot1q-tunnel

[msuthar]

Hi,

Please refer the below table for better clarification:-

Configuration   Command on One Side	Short Name	Meaning	To Trunk,   Other Side Must Be
switchport   mode trunk ; switchport nonegotiate	Nonegotiate	Always trunks on this   end; does not send DTP messages (good when other switch is a non-Cisco   switch)	On
switchport   mode access; switchport nonegotiate	Access (with   nonegotiate)	Never trunks; does   not send DTP messages	(Never trunks)
switchport mode trunk	Trunk	Always trunks on this end; sends DTP to help other side choose   to trunk	On, desirable, auto
switchport mode dynamic   desirable	Desirable	Sends DTP messages, and trunks if negotiation succeeds	On, desirable, auto
switchport mode dynamic auto	Auto	Replies to DTP messages, and trunks if negotiation succeeds	On, desirable
switchport mode access	Access	Never trunks; sends DTP to help other side reach same   conclusion	(Never trunks)

Regards

Mukesh Suthar

Please mark this as "Answered" if it resolves your query.