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2 – General Description
Fibre Channel Ports
59042-02 A 2-5
2.2.1
Small Form-Factor Pluggable (SFP) Transceivers
SFP transceivers plug into the ports; duplex fiber optic cables plug into the
transceivers which then connect to the devices. A port is capable of transmitting at
1 Gbps or 2 Gbps; however, the transceiver must be capable of 2 Gbps for the
port to deliver at that rate.
The SFP transceivers are hot swappable. This means that you can remove or
install an SFP transceiver while the switch is operating without harming the switch
or the transceiver. However, communication with the connected device will be
interrupted. Refer to ”Install SFP Transceivers” on page 4-4 for information about
installing and removing SFP transceivers.
2.2.2
Port Modes
SANbox2-8c switches support the following port modes:
■ Generic ports (GL_Port and G_Port)
■ Fabric ports (FL_Port and F_Port)
■ Translated loop ports (TL_Port)
■ Expansion ports (E_Port)
Switches come from the factory with all ports configured as GL_Ports. GL_Ports
self-configure in the following ways:
■ FL_Port when connected to a loop of public devices
■ F_Port when connected to a single public device. 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.
■ E_Port when connected to another FC-SW-2 compliant switch
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.
2.2.2.1
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).