Juniper MX960 Hardware Manual page 150

LEDs OK/FAIL LED, one bicolor:
STATUS LED, one tricolor for each SPU SPU 0 and SPU 1:
SERVICE LED, one tricolor for each SPU SPU 0 and SPU 1:
HA LED, one tricolor:
LINK/ACT LED, one for each of the two ports CHASSIS CLUSTER CONTROL 0 and
CHASSIS CLUSTER CONTROL 1:
Steady green–The SPC is operating normally.
Red–The SPC has failed and is not operating normally.
Off–The SPC is powered down.
Off–The SPU is offline.
Blinking Amber–The SPU is initializing.
Green–The SPU initialization is done and it is operating normally.
Red–The SPU has encountered an error or a failure.
Off–The SPU is offline.
Blinking Red–The SPU initialization is done.
Blinking Amber–Service is initializing on the SPU.
Green–Service is running on the SPU under acceptable load.
Solid Red–Service encountered an error or a failure.
Green–Clustering is operating normally. All cluster members and monitored links are
available, and no error conditions are detected.
Red–A critical alarm is present on clustering. A cluster member is missing or unreachable,
or the other node is no longer part of a cluster because it has been disabled by the dual
membership and detection recovery process in reaction to a control-link or fabric-link
failure.
Amber–All cluster members are present, but an error condition has compromised the
performance and resiliency of the cluster. The reduced bandwidth could cause packets
to be dropped or could result in reduced resiliency because a single point of failure might
exist. The error condition might be caused by:
The loss of chassis cluster links which causes an interface monitoring failure.
An error in an SPU or NPU.
Failure of the spu-monitoring or cold-sync-monitoring processes.
A chassis cluster IP monitoring failure.
Off–The node is not configured for clustering or it has been disabled by the dual
membership and detection recovery process in reaction to a control link or fabric link
failure.
Green–Chassis cluster control port link is active.
Off–No link.
127