Juniper Networks ERX Hardware 8 - Manual (Page 125)

Troubleshooting
Table 11: LED Identification and Activity Descriptions (continued)
LED Location LED Label LED Indicator LED Color OFF to ON ON to OFF
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. 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
X.21/V.35 line
module
DTE Port status Green DTE cable
connected DTE cable
disconnected
SYNC Port status Green In frame Not in frame
YEL ALM Port status Yellow Far-end receive
failure (FERF)
exists No FERF present
Other line
modules
RED ALM Port status Red Loss of sync/frame In frame
The following figures show a representative module for each of the three variations:
SRP module (Figure 47)
Ethernet line module (Figure 48)
Other line modules (Figure 49)
Understanding Status LEDs to Troubleshoot 107