Table 4-2. Troubleshooting Using the Port Status LEDs (Continued)
LED State | Indication | Possible Cause | Corrective Action | |
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|
5 Blinks | Invalid Data | Receive light | Verify that received | |
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|
| intensity too | optical power level is |
|
|
| high. | correct. Refer to |
|
|
|
| Chapter 2 (Link |
|
|
|
| Distances). |
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|
|
|
|
|
|
| Connection | Unplug the |
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|
| made to | connection. |
|
|
|
| is not compatible with |
|
|
| Module. | this |
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|
|
| Module. |
|
|
|
|
|
|
|
| Bad fiber | Clean and reconnect |
|
|
| connections. | fiber (both ends). |
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|
|
|
|
|
|
| Broken or | Check and fix RX fiber |
|
|
| cracked fiber. | link. |
|
|
|
|
|
|
|
| Bad remote | Try another port or |
|
|
| device. | replace device. |
|
|
|
|
|
|
|
| Bad | Replace the module. |
|
|
| Module. |
|
|
|
|
| |
6 Blinks | Low Light | Low light | Verify optical power | |
| Received | received. | received is at low end | |
|
|
|
| of optical power |
|
|
|
| budget by doing an |
|
|
|
| optical power |
|
|
|
| calculation. If value is |
|
|
|
| acceptable, disable low |
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|
|
| light detection. |
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|
|
|
|
|
|
| Legal | Disable low light |
|
|
| configuration | detection or enable |
|
|
| with acceptable | High power at remote |
|
|
| low light. | end. |
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|
|
|
|
4 - 6 ONline Ethernet
