Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 101
Duplicate PWWN handling during device login, Setting 0, First login precedence
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Performing Advanced Configuration Tasks ∙ Sample output of the syslog server information: switch:admin> syslogadmin --show -ip syslog.1 10.20.58.113 syslog.2 win2k8-58-113 ∙ Sample command to remove the syslog server hostname: switch:admin> syslogadmin --remove -ip win2k8-58-113 Syslog hostname win2k8-58-113 removed Duplicate PWWN handling during device login If a device attempts to log in with the same port WWN (PWWN) as another device on the same switch, you can configure whether the new login or the existing login takes precedence. Note that if a device attempts to log in with the same PWWN as another device on a different switch, both devices are logged out. This section describes what happens with devices logging in on the same switch. You can configure how duplicate PWWNs are handled by selecting an option in the Enforce FLOGI/FDISC login prompt of the configure command: ∙ Setting 0: First login takes precedence over second login (default behavior). ∙ Setting 1: Second login overrides first login. ∙ Setting 2: The port type determines whether the first or second login takes precedence. Setting 0, First login precedence When setting 0 is selected, the first login takes precedence over the second. This is the default behavior. The following table describes the behavior when setting 0 is selected. TABLE 8 Duplicate PWWN behavior: First login takes precedence over second login Input port First port login is NPIV port FLOGI received The new login is rejected and the new port is persistently disabled. FDISC received The new FDISC is rejected. First port login is F_Port The new login is rejected and the new port is persistently disabled. The new FDISC is rejected. Setting 1, Second login precedence When setting 1 is selected, the second login takes precedence over the first. The following table describes the behavior when setting 1 is selected. TABLE 9 Duplicate PWWN behavior: Second login overrides first login Input port First port login is F_Port FLOGI received New login forces an explicit logout of original login on the previous F_Port. The previous F_Port is persistently disabled. FDISC received New FDISC forces an explicit logout of original login on the previous F_Port. The previous F_Port is persistently disabled. First port login is NPIV port 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 FDISC forces an explicit logout of original FDISC on the previous NPIV port. Brocade Fabric OS Administration Guide, 8.0.1 53-1004111-02 101
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