Juniper E Series

Understanding Status LEDs to Troubleshoot ! 103
Chapter 10: Troubleshooting
Figure 52: SRP module LEDs
Status LEDs
Status LEDs
OK
FAIL
ONLINE
REDUNDANT
POWER A OK
POWER B OK
FAN OK
FAN FAIL
LINK
ACTIVITY
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NOTE: The primary SRP module illuminates the REDUNDANT LED only when the
SRP module detects that there is a secondary or standby SRP module online. 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, it
reboots the system and takes control. (ERX-7xx/14xx models only)