This is the fifth question in a series of OEQs. The answer to the fourth question has been added to the post.

Fifth question:

What protocol is used to automatically form trunks on a Cisco switch and how do you disable it?

Please post answers in the comments (without Googling)!

Highlight for answer:

Dynamic Trunking Protocol automatically forms trunks. It is disabled with “switchport nonegatiate”


Colby Glass has been in IT since 2002. He is currently a network engineer with a Cisco Gold partner and holds the CCNP R/S, CCNP DC, CCDP, CCIP, JNCIA-ER and ITILv3: Foundations certifications.

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