Reference Guide

TABLE 9 Duplicate PWWN behavior: Second login overrides first login (continued)
Input port First port login is F_Port First port login is NPIV port
If Base Device Logout is enabled on the NPIV
port, only the base device is logged out and the
remaining NPIV devices stay logged in.
Setting 2, Mixed precedence
When setting 2 is selected, the precedence depends on the port type of the first login:
∙ If the previous port is an F_Port, the first login takes precedence.
∙ If the previous port is an NPIV port, the second login overrides the first login.
TABLE 10 Duplicate PWWN behavior: Port type determines which login takes precedence
Input port First port login is NPIV port First port login is F_Port
FLOGI received New login forces an explicit logout of original
FDISC on the previous NPIV port.
If Base Device Logout is enabled on the NPIV
port, only the base device is logged out and the
remaining NPIV devices stay logged in.
New login is rejected and the new port is
persistently disabled.
FDISC received New FDISC forces an explicit logout of original
FDISC on the previous NPIV port.
If Base Device Logout is enabled on the NPIV
port, only the base device is logged out and the
remaining NPIV devices stay logged in.
New FDISC is rejected.
Setting the behavior for handling duplicate PWWNs
You can configure how duplicate port WWNs (PWWNs) are handled if a device attempts to log in with the same PWWN as another
device on the switch.
1. Connect to the switch and log in using an account with admin permissions.
2. Enter the switchDisable command to disable the switch.
3. Enter the configure command.
4. Enter y after the F_Port login parameters prompt.
F-Port login parameters (yes, y, no, n): [no] y
5. Enter one of the following options at the Enforce FLOGI/FDISC login prompt to select the behavior for handling duplicate
PWWNs.
∙ Enter 0 to have the first login take precedence over the second login (default).
∙ Enter 1 to have the second login override the first login.
∙ Enter 2 to have the port type determine the behavior.
If a duplicate login is received on an F_Port, the duplicate login is rejected and the old login is preserved; if a duplicate login is
received on an NPIV port, the newer login is accepted.
Enforce FLOGI/FDISC login: (0..2) [0] 1
6. Respond to the remaining prompts, or press Ctrl + D to accept the other settings and exit.
Performing Advanced Configuration Tasks
Brocade Fabric OS Administration Guide, 8.0.1
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