World Wide Port Name
In computing, a World Wide Port Name, WWPN, or WWpN, is a World Wide Name assigned to a port in a Fibre Channel fabric.[1][2] Used on storage area networks, it performs a function equivalent to the MAC address in Ethernet protocol, as it is supposed to be a unique identifier in the network.
A WWPN is a World Wide Port Name; a unique identifier for each Fibre Channel port presented to a Storage Area Network (SAN).[3] Each port on a Storage Device has a unique and persistent WWPN.
A World Wide Node Name, WWNN, or WWnN, is a World Wide Name assigned to a node (an endpoint, a device) in a Fibre Channel fabric. It is valid for the same WWNN to be seen on many different ports (different addresses) on the network, identifying the ports as multiple network interfaces of a single network node.
External links
References
- ↑ "IBM Storage FlashSystem 7300 and 7200". 2025-02-28. https://www.ibm.com/docs/en/flashsystem-7x00/8.6.0?topic=wnpn-worldwide-node-port-names.
- ↑ Troppens, Ulf; Erkens, Rainer; Müller, Wolfgang (2005-08-05). Storage Networks Explained: Basics and Application of Fibre Channel SAN, NAS, iSCSI and InfiniBand. John Wiley & Sons. p. 73. ISBN 978-0-470-86183-7. https://www.google.co.uk/books/edition/Storage_Networks_Explained/TUtrRoDhNm4C?hl=en&gbpv=1&dq=World+Wide+Port+Name&pg=PA73&printsec=frontcover. Retrieved 2025-11-10.
- ↑ Sheldon, Robert (2022-04-22). "What is World Wide Name (WWN) in Fibre Channel SANs?". https://www.techtarget.com/searchstorage/definition/World-Wide-Name-WWN.
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