3. LEDs
LED Meanings
When power is first applied to the unit, it performs a
Table
LED | Color | State | Meaning |
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Link* | Green | Off | No Ethernet link present. |
|
| On | Ethernet Link present. |
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| Flashing | Ethernet link is present, but port is |
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| administratively disabled. |
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Activity* | Green | Off | No data is being transferred. |
|
| On | Data is being transferred. |
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Uplink Ports | Green | On | Good signal; unit is trained. |
(T1/E1 models) | Yellow | On | Link is in an alarm state. |
| |||
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| Off | Link is disabled. |
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STATUS | Green | Off | No power, or the unit has not completed |
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| initialization. |
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| On | Unit has power and has completed initialization. |
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ALARM | Amber | Off | No Alarms. |
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| On | An alarm is reported: the unit failed |
|
|
| the unit has exceeded a safe temperature, or a |
|
|
| fan has failed, or a port is in an alarm state. |
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TEST | Amber | Off | Normal operating mode. |
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| On | At least one port is in test mode. |
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DSL Ports | Green | Off | The port is disabled or no signal is detected on |
(LEDs |
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| the line. |
numbered |
| On | Port has successfully trained with the remote |
correspond to |
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| and is active. | |
DSL ports |
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*The
March 2005 |