Q
Problem solve Get help with specific problems with your technologies, process and projects.

Node and port WWNs

In a switch, there are two WWNs. One is port WWN and the other is node WWN. What are the differences? Also, what is fabric login? Is it the same as DFA?
Port WWN is the FC network ID for the particular switch port. All entities in an FC network have a WWN. Node WWN is the WWN of the node that is connected to a particular port. In other words it is the WWN of the system or storage device/subsystem that is connected to the switch port. I am not familiar with the acronym DFA so I don't know if it is the same or not - but I doubt it.

Regards,
Marc Farley

Editor's note: Do you agree with this expert's response? If you have more to share, post it in our Storage Networking discussion forum at http://searchstorage.discussions.techtarget.com/WebX?replyToMessage@7.uALMagHuauI^1@.ee83ce4!viewtype=convdate


This was last published in November 2001

Dig Deeper on SAN technology and arrays

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

SearchDisasterRecovery

SearchDataBackup

SearchConvergedInfrastructure

Close