Understanding Status LEDs ERX Edge Routers
Table
Diagnostic Signs | Possible Problems | Actions | |||
LINK LED is not lit | • | Ethernet connection is | 1 | Check that Ethernet cables are properly connected to | |
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| down. |
| both the Ethernet port and the appropriate network |
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| device. |
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| 2 | Contact Juniper Networks Customer Service. |
RED ALM | • | System does not | 1 | Check that all cables are firmly plugged into OC3 | |
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| recognize a port |
| ports and the attached network device. |
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| connection. | 2 | Verify that cables are clean. |
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| • Cabling is not connected | |||
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| 3 | Test for faulty cables. | ||
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| properly. | 4 | Verify clock source and configuration. |
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| • | Cable is faulty. | ||
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| 5 | Reset system. | ||
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| • | Clocking problem exists. | ||
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| Note: Problem is corrected when normal LED activity is | |
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| observed. | |
YEL ALM | • | Far end receive failure | 1 | Correct FERF problem. | |
Note: This LED is not |
| (FERF) exists. | 2 | Reset system. | |
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functional on the HSSI line |
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module. |
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| Note: Problem is corrected when normal LED activity | ||
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| is observed. | |
• System will not boot. | A slot group is overloaded. | 1 | Issue the show version command to display board | ||
• | Module(s) held offline. |
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| status. |
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| 2 | Review section on proper slot group configuration in | ||
• | FAIL LED lights |
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| Chapter 3, Installing ERX Modules. |
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| 3 | Reconfigure system with correct slot group |
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| configuration. |
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| 4 | Reset system. |
None | • | System temperature is | 1 | Check your console for a message indicating the | |
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| too high. |
| problem. If you have the “system” log set to a severity |
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| • | Vents are blocked. |
| of WARNING or higher, a Warning message |
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| indicating the failure is displayed. | ||
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| • Fans are not operating. |
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| 2 | Issue the show environment command to display | ||
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| the temperatures. If the temperature is too high, |
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| power down the system. |
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| 3 | Regulate temperature. |
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| 4 | Reset system. |
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Redundancy Status
You can determine the redundancy state of line modules by examining the online and redundant status LEDs. See Table
Note: The REDUNDANT LED on the cOCx/STMx,
