Understanding Status LEDs ERX Edge Routers
Table
LED Location | LED Label | LED Indicator | LED Color | OFF to ON | ON to OFF |
| ACTIVE | Port status | Green | Port configured | Port not configured |
X.21/V.35 line |
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LOOPBK | Port status | Yellow | Port in local loopback or | Port not in loopback | |
module |
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| remote loopback, |
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| depending on the type of |
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| connection. (See) |
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| ERROR | Port status | Red | Port is enabled or comes | Port is disabled or goes |
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| online | offline |
| V.35 | Port status | Green | V.35 cable connected | V.35 cable disconnected |
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| X.21 | Port status | Green | X.21 cable connected | X.21 cable disconnected |
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| DCE | Port status | Green | DCE cable connected | DCE cable disconnected |
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| DTE | Port status | Green | DTE cable connected | DTE cable disconnected |
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| SYNC | Port status | Green | In frame | Not in frame |
Other line |
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YEL ALM | Port status | Yellow | Far end receive failure | No FERF present | |
modules |
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| (FERF) exists |
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| RED ALM | Port status | Red | Loss of sync/frame | In frame |
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The following figures show a representative module for each of the three variations:
•SRP module (Figure
•Ethernet line module (Figure
•Other line modules (Figure