Brocade Fabric OS Administrator's Guide Supporting Fabric OS v6.3.0 (53-1001336-02, November 2009)

452 Fabric OS Administrator’s Guide
53-1001336-02
F_Port masterless trunking
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Port Swap When you assign a Trunk Area to a trunk group, the Trunk Area cannot be port
swapped; if a port is swapped, then you cannot assign a Trunk Area to that port.
Trunk Master No more than one trunk master in a trunk group. The second trunk master will be
persistently disabled with reason "Area has been acquired”.
Fastwrite When you assign a Trunk Area to a trunk group, the trunk group cannot have
Fastwrite enabled on those ports; if a port is Fastwrite-enabled, the port cannot be
assigned a Trunk Area.
FICON FICON is not supported on F_Port trunk ports. However, FICON can still run on
ports that are not F_Port trunked within the same switch.
FC4-48 blade On the FC4-48 blade, F_Port trunking is supported only on ports 0 - 15.
FC4-32 blade If an FC4-32 blade has the Trunk Area enabled on ports 16 - 31 and the blade is
swapped with an FC4-48 or FC8-48
blade, the Trunk Area ports will be persistently
disabled. You can run the portTrunkArea command to assign a Trunk Area on those
ports.
Access Gateway mode Does not support F_Port trunking. It only supports N_Port trunking in AG mode.
Trunking You must first enable Trunking on the port before the port can have a Trunk Area
assigned to it.
PID format F_Port masterless trunking is only supported in the CORE PID format.
Long Distance Long distance is not allowed on F_Port trunks, which means a Trunk Area is not
allowed on long-distance ports; you cannot enable long distance on ports that
have a Trunk Area assigned to them.
Port mirroring Port mirroring is not supported on Trunk Area ports or on the PID of an F_Port trunk
port.
configdownload If you issue the configDownload command for a port configuration that is not
compatible with F_Port trunking, and the port is Trunk Area-enabled, then the port
will be persistently disabled.
Note: Configurations that are not compatible with F_Port trunking are long
distance, port mirroring, non-CORE_PID, and Fast Write.
ICL Port F_Port trunks are not allowed on Inter-Chassis Link (ICL) Ports. The portTrunkArea
command does not allow it.
AD You cannot create a Trunk Area on ports with different Admin Domains. You cannot
create a Trunk Area in AD255.
DCC Policy DCC policy enforcement for the F_Port trunk is based on the Trunk Area; the FDISC
requests to a trunk port are accepted only if the WWN of the attached device is
part of the DCC policy against the TA. The PWWN of the FLOGI sent from the AG will
be dynamic for the F_Port trunk master. Because you do not know ahead of time
what PWWN AG will use, the PWWN of the FLOGI will not go through DCC policy
check on an F_Port trunk master. However, the PWWN of the FDISC will continue to
go through DCC policy check.
Routing Routing will route against the F_Port trunk master. Port and exchange-based
routing is supported on the F_Port trunk masters. Bandwidth information will be
modified accordingly as the F_Port trunk forms.
NPIV Supported on F_Port master trunk.
Two masters Two masters are not supported in the same F_Port trunk group.
TABLE 87 F_Port masterless trunking considerations (Continued)
Category Description