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1–General Description
I/O Blades
59229-05 A 1-7
Port Types
The switch supports generic ports (G_Port, GL_Port), fabric ports (F_Port,
FL_Port), and expansion ports (E_Port). Switches come from the factory with all
ports configured as GL_Ports. Generic, fabric, and expansion ports function as
follows:
A GL_Port self-configures as an FL_Port when connected to a public loop
device, as an F_Port when connected to a single public device, or as an
E_Port when connected to another switch. If the device is a single device on
a loop, the GL_Port will attempt to configure first as an F_Port, then if that
fails, as an FL_Port.
A G_Port self-configures as an F_Port when connected to a single public
device, or as an E_Port when connected to another switch.
An FL_Port supports a loop of up to 126 public devices. An FL_Port can also
configure itself during the fabric login process as an F_Port when connected
to a single public device (N_Port).
An F_Port supports a single public device. F_Ports also support N_Port ID
Virtualization (NPIV).
E_Ports enable you to expand the fabric by connecting QLogic 9000 Series
switches with other switches. QLogic 9000 Series switches self-discover all
inter-switch connections. Refer to “Multiple Chassis Fabrics” on page 2-6 for more
information about multiple chassis fabrics.