Juniper Networks ERX-1410 - Manual (Page 112)

CHAPTER 8
Troubleshooting 8-6
Figure 8-1 SRP module LEDs
Note: The primary SRP illuminates the REDUNDANT LED only when the SRP
detects that there is a secondary or standby SRP module online. The standby SRP
monitors an activity signal from the primary SRP module to determine its state; it
does not shadow the operations of the primary SRP. If the standby SRP detects
that the primary SRP is not active, it reboots the system and takes control.
FAIL
ONLINE
REDUNDANT
POWER A OK
POWER B OK
FAN OK
FAN FAIL
LINK
ACTIVITY
OK
Status LEDs
Status LEDs