Q-Logic 59021-05 B manual Logged-In LED, Activity LED, Port Modes

2 – General Description Fibre Channel Ports

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2.2.2.1

Logged-In LED

The Logged-in LED indicates the logged-in or initialization status of the connected devices. After successful completion of the POST, the switch extinguishes all Logged-In LEDs. Following a successful loop initialization or port login, the switch illuminates the corresponding logged-in LED. This shows that the port is properly connected and able to communicate with its attached devices. The Logged-In LED remains illuminated as long as the port is initialized or logged in. If the port connection is broken or an error occurs that disables the port, the Logged-In LED will flash. Refer to ”Logged-In LED Indications” on page 5-5for more information about the Logged-In LED.

2.2.2.2

Activity LED

The Activity LED indicates that data is passing through the port. Each frame that the port transmits or receives causes this LED to illuminate for 50 milliseconds. This makes it possible to observe the transmission of a single frame. When extending credits, the Activity LED for a donor port will reflect the traffic of the recipient port. Refer to ”Distance” on page 3-6for more information about extended credits and donor ports.

2.2.3

Port Modes

SANbox2-16 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

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