Reference Guide

FIGURE 65 Fabric-assigned port World Wide Name provisioning scenarios
User- and auto-assigned FA-PWWN behavior
Each switch port and Access Gateway port can have up to two FA-PWWNs, one assigned automatically and one assigned by the user.
FA-PWWNs must be unique, and only one FA-PWWN can be active at any given time.
The automatically assigned FA-PWWN is created by default if you enable the feature without explicitly providing a virtual PWWN.
The user-assigned FA-PWWN takes precedence over the automatically assigned FA-PWWN. This means the switch will bind the user-
assigned FA-PWWN to the port if both a user-assigned and an automatically assigned FA-PWWN are available. If you want to select the
automatically assigned FA-PWWN over the user-assigned FA-PWWN, you must delete the user-assigned FA-PWWN from the port to
which it has been assigned.
The switch ensures that automatically assigned FA-PWWNs are unique in a fabric. However, it is your responsibility to ensure that user-
assigned FA-PWWNs are also unique throughout the fabric.
ATTENTION
You must ensure that the same user-assigned FA-PWWN is not used in multiple chassis. There is no fabric-wide database, so
adding the same FA-PWWNs in multiple chassis causes duplicate PWWNs.
Fabric-Assigned PWWN
Brocade Fabric OS Administration Guide, 8.0.1
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