Fabric OS Administrator's Guide v7.0.0 (53-1002148-02, June 2011)

440 Fabric OS Administrator’s Guide
53-1002148-02
F_Port trunking
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• The edge switch F_Port trunk ports are connected within the ASIC-supported trunk group on
the Access Gateway module.
• Both switches are running the same Fabric OS versions.
• Trunking must be enabled on all ports to be included in a Trunk Area (TA) before you attempt to
create a Trunk Area. See “Configuring trunk groups” on page 431 for details.
F_Port trunking for Brocade adapters
You can configure trunking between the F_Ports on an edge switch and the Brocade adapters.
In addition to the requirements listed in “Requirements for trunk groups” on page 429, note the
following requirements, which are specific to F_Port trunking for Brocade adapters:
• The edge switch must be running in Native mode. You cannot configure trunking between the
Brocade adapters and the F_Ports of an Access Gateway module.
• You can configure only two F_Ports in one trunk group.
See the Brocade Adapters Administrator’s Guide for information about configuring the
corresponding N_Port trunking on the Access Gateway and the Brocade adapter.
F_Port trunking considerations
Table 76 describes the F_Port trunking considerations.
TABLE 76 F_Port masterless considerations
Category Description
AD You cannot create a Trunk Area on ports with different Admin Domains. You cannot create a
Trunk Area in AD255.
Area assignment You statically assign the area within the trunk group on the edge switch. That group is the
F_Port trunk.
The static trunk area you assign must fall within the ASIC's trunk group of the switch or
blade starting from port 0, and must be one of the port’s default areas of the trunk group.
10-bit addressing is the default mode for all dynamically created partitions in the Brocade
DCX and DCX 8510-8 platforms.
Authentication Authentication occurs only on the F_Port trunk master port and only once per the entire
trunk. This behavior is the same as E_Port trunk master authentication. Because only one
port in the trunk does FLOGI to the switch, and authentication follows FLOGI on that port,
only that port displays the authentication details when you issue the portShow command.
NOTE: Switches in Access Gateway mode do not perform authentication.
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. F_Port trunks will never be restored through configDownload.
NOTE: Configurations that are not compatible with F_Port trunking are long distance, port
mirroring, non-CORE_PID, and Fast Write.