D-Link 1250G Product Manual - Page 9

Power and System LEDs, Ports 1~48 10/100M Status LEDs, Ports 49~50 Gigabit Status LEDs - d link switch

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UNDERSTANDING LED INDICATORS The front panel LEDs provide instant status feedback, and help monitor and troubleshoot when needed. Figure 5. LED indicators of the Switch Power and System LEDs POWER: Power Indicator On : When the Power LED lights on, the Switch is receiving power. Off : When the Power turns off or the power cord has improper connection. CPU: Management Indicator Blinking : When the CPU is working, the System LED is blinking. On/Off : The CPU is not working. Ports 1~48 10/100M Status LEDs Link/ACT: Link/Activity On : When the Link/ACT LED lights on, the respective port is successfully connected to an Ethernet network. Blinking : When the Link/ACT LED is blinking, the port is transmitting or receiving data on the Ethernet network. Off : No link. Ports 49~50 Gigabit Status LEDs Link/ACT: Link/Activity On : When the Link/ACT LED lights on, the respective port is successfully connected to an Ethernet network. Blinking : When the Link/ACT LED is blinking, the port is transmitting or receiving data on the Ethernet network. Off : No link. SPEED: On : When the green light is on, the respective port is connected to a (Green) 1000Mbps Gigabit Ethernet network. On When the Amber light is on, the respective port is connected to a (Amber) 100Mbps Fast Ethernet network. Off : When the respective port is connected to a 10Mbps Ethernet or No link. 14

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UNDERSTANDING LED INDICATORS
The front panel LEDs provide instant status feedback, and help monitor and troubleshoot when needed.
Figure 5. LED indicators of the Switch
Power and System LEDs
POWER: Power Indicator
On
:
When the Power LED lights on, the Switch is receiving power.
Off
:
When the Power turns off or the power cord has improper connection.
CPU: Management Indicator
Blinking
:
When the CPU is working, the System LED is blinking.
On/Off
: The CPU is not working.
Ports 1~48 10/100M Status LEDs
Link/ACT: Link/Activity
On
:
When the Link/ACT LED lights on, the respective port is successfully
connected to an Ethernet network.
Blinking
: When the Link/ACT LED is blinking, the port is transmitting or
receiving data on the Ethernet network.
Off
: No link.
Ports 49~50 Gigabit Status LEDs
Link/ACT: Link/Activity
On
:
When the Link/ACT LED lights on, the respective port is successfully
connected to an Ethernet network.
Blinking
: When the Link/ACT LED is blinking, the port is transmitting or
receiving data on the Ethernet network.
Off
: No link.
SPEED:
On
(Green)
: When the green light is on, the respective port is connected to a
1000Mbps Gigabit Ethernet network.
On
(Amber)
When the Amber light is on, the respective port is connected to a
100Mbps Fast Ethernet network.
Off
: When the respective port is connected to a 10Mbps Ethernet or No link.
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