I have been working with two new EMC VNX’s and ran into a odd problem and could not find anything about the issue, so I am going to post what I know and see if anyone has any more in-depth knowledge to share about the problem.
After wiring up the fiber ports of the VNX to the Brocade switches I notice that not all of the ports “Logged in” looking a bit farther I noticed that some of the ports were labled as Loop ports.. well that was odd, as the VNX should show as a (F) port and not a Loop (L) port. I dug around EMC’s power link, Brocades forums and could not find anyone else mentioning this problem.. Long story short I ended up setting the prefrences on the individual ports on the switch and forced their speed, and port type to (F) port only. After doing that and the typical warning from Brocade that changing the settings will disrupt traffic (how can you disrupt no traffic??) anyway after forcing the port settings on the switch all worked as expected.
Just in case you are thinking it is a model issue I experienced the same issues with:
EMC VNX 7500 connecting to two Brocade DCX’s 8gb cards and
EMC VNX 57oo connecting to two Brocade SilkWorm 4100’s
If you experience similar issues please post and and maybe get a answer to this issue.