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2 – General Description
Fibre Channel Ports
59021-05 B 2-7
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G_Ports self-configure in the following ways:
F_Port when connected to a public device
E_Port when connected to another FC-SW-2 compliant switch
A TL_Port supports private loop devices and must be configured explicitly. Refer
to the SANbox2-8c/16 Switch Management User’s Guide for more information
about defining port modes.
2.2.3.1
Fabric Ports
An FL_Port can support 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).
2.2.3.2
Translated Loop Port
A TL_Port supports a loop of up 124 private target devices with the ability to
communicate with up to 63 “off-loop” public devices. Private loop initiator devices
are not supported on the TL_Port. The TL_Port acts as a proxy for the off-loop
device translating private frames into and from public frames. The set of off-loop
devices are maintained in the TL_Port’s translation entries list. The switch
firmware automatically creates an entry in the translation entries list for each
off-loop initiator device that attempts to establish communication. Soft or VPF
zoning can be used to limit the number of potential initiators to 63. Zone
membership must be done by worldwide name, or domain ID and port ID.
TL_Ports connect to devices that conform to the Fibre Channel-Private Loop SCSI
Direct Attach (FC-PLDA) standard. Devices connected to TL_Ports are registered
with the Name Server.
2.2.3.3
Expansion Port
E_Ports enable you to expand the fabric by connecting SANbox2-16 switches with
other FC-SW-2 compliant switches. SANbox2-16 switches self-discover all
inter-switch connections. Refer to ”Multiple Chassis Fabrics” on page 3-2 for more
information about multiple chassis fabrics.