Juniper Networks E-Series - Manual (Page 127)

Understanding Status LEDs to Troubleshoot
E-Series Routers
10-5
• Ethernet line module ( Figure 10-2 )
• Other line modules ( Figure 10-3 )
Figure 10-1 SRP module LEDs
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)
Status LEDs
Status LEDs
OK
FAIL
ONLINE
REDUNDANT
POWER
A OK POWER B OK
FAN OK
FAN F
AIL
LINK
ACTIVITY
g013768