Port Leds; Logged-In Led; Activity Led - Qlogic SANbox2-16 Installation Manual

D
2.3

Port LEDs

Each Fibre Channel port has its own Logged-In LED and Activity LED as shown in
Figure
2.3.0.5

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
about the Logged-In LED.
2.3.0.6

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
extended credits and donor ports.
59021-07 A
2-5.
Logged-In LED
(Green)
Figure 2-5. Port LEDs
"Logged-In LED Indications" on page 5-5
"Distance" on page 3-6
Activity LED
(Amber)
for more information about
2 – General Description

Port LEDs

for more information
2-5