Check The Scb Led Status - Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Network Operation Manual

Step 3: Check the SCB LED Status
To check the SCB status, look at the LEDs on the SCB faceplate (see Figure 162).
Action
Figure 162: SCB LEDs
Table 93 describes the SCB LED states.
Table 93: SCB LEDs
If all four SCB LEDs are on, but dimly lit, the SCB is probably not seated properly.
Tighten the captive screws at the top and bottom of the SCB card carrier.
If the green RUN LED on the SCB is not blinking, the SCB processor is not
functioning normally. The SCB might not be connected properly to the backplane.
Tighten the screws at the top and bottom of the SCB card carrier. If that does not
work, reinstall the SCB.
The SCB has a reset switch on its faceplate above the LEDs. You normally do not use
the reset switch. Pushing the reset switch results in a cold restart of the Packet
Forwarding Engine, which causes a service interruption for a minute or two. To trip
the reset switch, you must access it through a hole in the faceplate with a paper clip
or other small probe.
Color Label
Green ACTIVE
Green RUN
Amber
STAT1
Amber
STAT2
STAT2
STAT1
RUN
ACTIVE
DIAG
PORT
State Description
Flashing I/O interrupts are occurring.
(pulsed with
out-time
proportional to
traffic)
Blinking SCB processor is running. Normally, the
(slow and blinking is faint and becomes bright only
steady) when the SCB is processing many
exceptions.
Flashing Internal diagnostics are running.
Flashing Internal diagnostics are running.
Chapter 30: Monitoring the SCB
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Monitoring the SCB Status
397