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Understanding Status LEDs
ERX Edge Routers
8-5
The following figures show a representative module for each of the three
variations:
• SRP module (Figure 8-1)
• Ethernet line module (Figure 8-2)
• Other line modules (Figure 8-3)
X.21/V.35 line
module
ACTIVE Port status Green Port configured Port not configured
LOOPBK Port status Yellow Port in local loopback or
remote loopback,
depending on the type of
connection. (See)
Port not in loopback
ERROR Port status Red Port is enabled or comes
online
Port is disabled or goes
offline
V.35 Port status Green V.35 cable connected V.35 cable disconnected
X.21 Port status Green X.21 cable connected X.21 cable disconnected
DCE Port status Green DCE cable connected DCE cable disconnected
DTE Port status Green DTE cable connected DTE cable disconnected
Other line
modules
SYNC Port status Green In frame Not in frame
YEL ALM Port status Yellow Far end receive failure
(FERF) exists
No FERF present
RED ALM Port status Red Loss of sync/frame In frame
Table 8-2 LED identification and activity descriptions (continued)
LED Location LED Label LED Indicator LED Color OFF to ON ON to OFF