WWN (world wide node name) of ESX

[eagleh]

Is there an easy way to find out what WWN(World Wide Node Name) of my ESX is? I am trying to set up zoning on my SAN Switch.

Thanks.

[Troy_Clavell]

check your storage adapters under the configuration tab, there you will see the WWN numbers of the installed adapters.

[khughes]

Like Troy said they're under the storage adapters under the configuration tab. See attached screenshot

• Kyle

[eagleh]

Thank you guys. However, I am scared because when I check the "storage adpater" configuration, I have something like this:

vmhba1: .... 50:01:43:80:00:ac:d9:18

vmhba2: .... 50:01:43:80:00:ac:d9:1a

Now, there weird thing is, when I check one of my SAN switchs, I have this:

50:01:43:80:00:ac:d9:1b

and on another switch I have:

50:01:43:80:00:ac:d9:19

see the difference on the last two digits? Why they don't exactly match?

[Troy_Clavell]

two different HBA's, they should have unique WWN's or something is wrong.

Message was edited by: Troy Clavell

...I just noticed the difference in WWN number reporting to the SAN. I'm not a storage guy, but the WWN numbers from your HBA's should be the same on the SAN as the HBA.

[eagleh]

Troy, as you see, they are UNIQUE by the last two digits. My quesiton is the last two digits don't match those on the switches.

My ESX connects to 2 switches (one HBA each switch so I have redandency here.) My ESX works just fine. Thanks for your quick reply.

[Troy_Clavell]

I just noticed the second part and updated my post. I'm not a SAN guy but when I give my SAN guy the WWN numbers of our HBA's they match on the SAN. I'm not 100% sure what's going on.

[patrickds · Accepted solution]

Difference in the last two digits is probably because on ESX you're seeing the World Wide Port Name, while on the switch you're looking at the World Wide Node Name.

One is the ID for the adapter, the other one for the port.

If you expand the WWN entry on the switch, you'll probably see the WWPN as a subitem of the WWN (you can do zoning on either of them)

[Troy_Clavell]

Difference in the last two digits is probably because on ESX you're seeing the World Wide Port Name, while on the switch you're looking at the World Wide Node Name.

One is the ID for the adapter, the other one for the port.

If you expand the WWN entry on the switch, you'll probably see the WWPN as a subitem of the WWN (you can do zoning on either of them)

Thank you patrickds for coming to the rescue as I madly search the Forums for the correct answer

[marvinms]

It doesn't hurt to double check the switch port that that you know you are plugged into either.

[dconvery]

Thank you guys. However, I am scared because when I check the "storage adpater" configuration, I have something like this:

vmhba1: .... 50:01:43:80:00:ac:d9:18

vmhba2: .... 50:01:43:80:00:ac:d9:1a

Now, there weird thing is, when I check one of my SAN switchs, I have this:

50:01:43:80:00:ac:d9:1b

and on another switch I have:

50:01:43:80:00:ac:d9:19

see the difference on the last two digits? Why they don't exactly match?

eagleh -

What you have is a dual port fibre channel adapter. The last octet is unique between each physical port with a last octet of 18 and 1a. The next two WWNs are node IDs and are incremented by one,, so you get 19 and 1b.

Dave Convery - VMware vExpert 2009

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Accomplishing the impossible means only that the boss will add it to your regular duties.

Doug Larson

[eagleh]

YOU GUYS ARE incrediable!!!! That is why this forum is like a treasure mine for me.

@ Troy, I am picturing how MAD you are in search of the right answer ! Cheers!!!

Again, thank you all !