Port Status Leds - Allied Telesis AT-GS920/16 Installation And User Manual

Port Status LEDs

Table 8. Port Status LEDs for Normal and Configuration Modes
Port LED
Mode
Position
Upper LEDs
Normal Mode
Lower LEDs
LED
ALL Mode LEDs
a.
When the port speed is configured for Auto Negotiation or 1000M/Full, the
MODE/FORCE MDI push button affects the FORCE MDI LED as described
above.
b. When the port speed is configured individually or altogether for 100M or
10M, the respective ports are always configured as follows:
AT-GS920/8: Ports 1-7 => MDI-X, Port 8 => MDI
AT-GS920/16: Ports 1-15 => MDI-X, Port 16 => MDI
AT-GS920/24: Ports 1-23 => MDI-X, Port 24 => MDI
Two ports status LEDs are assigned to each port. When the switch is in
the Normal operating mode, the upper port LED indicates the Link/Activity
status, and the lower LED indicates the port speed and loop detection
status. When the switch is in the Configuration mode, the upper port LED
is OFF and the lower LED indicates if the specific port is selected to be
configured. See Table 8.
LED
Link/Activity
SPEED
LOOP
Indication
Table 7. Port Mode LEDs
State
Green Reset to default indication when
Blinking blinking on all 4 MODE LEDs
State
Green ON Valid Link has been established
Green Transmitting or Receiving Data
Blinking
OFF
Green ON
Amber ON
OFF 10Mbps Link or No Link
1000Mbps Link. A loop condition
Green is detected and the port is
Blinking automatically blocked by switch to
100Mbps or 10Mbps Link. A loop
Amber condition is detected and the port
Blinking is automatically blocked by switch
Chapter 1: Product Description
Description
Description
No Link
1000Mbps Link
100Mbps Link
relieve the loop.
to relieve the loop.
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