vSphere webclient doesn’t show correct WWNN and WWPN

When I was installing a new vSphere 5.1 cluster for a customer I had to document the WWNN and the WWPN. After copying and pasting the WWNNs and the WWPN I noticed that on a hosts, the same WWNN and WWPN occur. Of course these have to be unique.





As you can see, this is not what you want.

When I list the WWNN and WWPN through the CLI I get the following result.











As you can see, the last 2 numbers/letters are different.

Conclusion, you cannot trust the vSphere Web Client for listing the correct WWNN and WWPN. Use the CLI instead.

About Michael
Michael Wilmsen is a VMware training/consultant (no specific order) with more than 15 years in the IT industry. Main focus is VMware vSphere, Horizon View and Site Recovery Manager with a deepdive to performance. Michael is VCDX 210, VCAP 4/5 certified, has been rewarded with the vExpert title from 2011, is a PernixPro, Nutanix Tech Champion and a Nutanix Platform Professional.

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