Juniper E Series User Manual

Understanding Status LEDs to Troubleshoot ! 101
Chapter 10: Troubleshooting
For example, an OCx/STMx line module can pair with either an OC3-4 or an
OC12/STM4 I/O module. Consequently, the line module has four port status LEDs
for OC3/STM1 operation. However, only the top set of port status LEDs are active
during OC12/STM4 operation.
Table 12 shows the functions of the module and port status LEDs.
Table 12: LED identification and activity descriptions
LED Location LED Label LED Indicator LED Color OFF to ON ON to OFF
All modules OK Module status Green Self-test passed Failure detected
FAIL Module status Red Failure detected Diagnostic test running
ONLINE Module status Green Module online Module offine
All modules REDUNDANT Redundancy Green See Redundancy Status later in this chapter.
NOTE: The REDUNDANT LED on the cOCx/STMx, FE-8,
GE/FE, HSSI, OCx/STMx, and X.21/V.35 line modules is
nonfunctional.
SRP module POWER A OK Power Green Power online on source A Power off
POWER B OK Power Green Power online on source B Power off
FAN OK Fan Green Fan online Critical fan failure
FAN FAIL Fan Red Critical fan failure Fan online
NOTE: When the LED alternates between OK and FAIL in ten second intervals, a
non-critical fan failure exists.
LINK Ethernet Green Ethernet link up Ethernet link down
ACTIVITY Ethernet Green Blinks when Ethernet traffic
on link
No Ethernet traffic on link
Ethernet line
modules
LINK Ethernet Green Ethernet link up Ethernet link down
ACTIVITY Ethernet Green Blinks when Ethernet traffic
on link
No Ethernet traffic
on link
HSSI line
module
SYNC Port status Green If the port is configured as
DTE, the LED lights when
both the DCE and the clock
source are available.
If the port is configured as
DCE, the LED lights when
the DTE is available.
If the port is configured as
DTE, the LED goes out
when either the DCE or the
clock source becomes
unavailable.
If the port is configured as
DCE, the LED goes out
when the DTE becomes
unavailable.
YEL ALM
NOTE: This LED is not functional on the HSSI line module.
RED ALM Port status Red If the port is configured as
DTE, the LED lights when
either the DCE or the clock
source becomes
unavailable.
If the port is configured as
DCE, the LED lights when
the DTE becomes
unavailable.
If the port is configured as
DTE, the LE goes out when
both the DCE and the clock
source are available.
If the port is configured as
DCE, the LED goes out
when the DTE is available.

Juniper E Series Specifications

General

Brand	Juniper
Model	E Series
Category	Network Router
Language	English