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Switchport Mode Query

Prasad Satav

Would like to know what is the difference between the following dynamic switchport modes

"Dynamic auto" and "Dynamic desirable"
thanks

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Comments

NetworkVeteran

Prasad Satav wrote: »

Would like to know what is the difference between the following dynamic switchport modes

"Dynamic auto" and "Dynamic desirable"
thanks

Prasad--

auto + auto = no trunking
auto + desireable = trunking
desireable + desireable = trunking

Basically, it's like so: If the mode is auto, the port will respond to DTP negotiations but not initiate them. If the mode is desireable, the port will both respond to and initiate DTP negotiations.

This is my recollection. I make no guarantees as to its accuracy, but I'm usually right.

Prasad Satav

Awesome..!! that is actually right.!! found some base for that as well

check it out
https://learningnetwork.cisco.com/servlet/JiveServlet/previewBody/14792-102-1-57313/Dynamic%20Trunking%20Protocol.PDF