Juniper E SERIES BROADBAND SERVICES ROUTERS 11.3.X - E120 AND E320 HARDWARE GUIDE REV 9-29-2010 Hardware Manual page 96

E120 and E320 11.3.x Hardware Guide
Table 10: LED Identification and Activity Descriptions
LED Location LED Label
All modules
OK
FAIL
ONLINE
Line module
REDUN
SFM module
REDUN
SRP module
REDUN
80
NOTE: The primary SRP module illuminates the REDUNDANT LED when the
SRP module is part of a redundancy group and it is up and running (or ready
to take over). The standby SRP module monitors an activity signal from the
primary SRP module to determine its state; it does not shadow the operations
of the primary SRP module. If the standby SRP module detects that the
primary SRP module is not active (and high-availability mode is not enabled),
it reboots the system and takes control. If high-availability mode has been
enabled, automatic switchover occurs with near hitless failover.
LED Indicator LED Color
Module status Green
Module status Red
Module status Green
Redundancy Green
Redundancy Green
Redundancy Green
OFF to ON ON to OFF
Self-test passed Failure detected
Failure detected Diagnostic test
running
Module online Module offline
Module is active, Module is active,
and a standby and no standby
module is module is
available available
N+1 redundancy is One of the five
enabled; 2 SRPs fabric slices is
and 3 SFMs must down or not
be installed and installed.
working.
N+1 redundancy is
When LED is lit, not enabled.
you can remove
the module
without
interrupting
service.
Module is the Module is no
spare system longer acting as
controller, is up, the spare system
and is ready to controller.
take the role of the
online system
controller.
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