Datasheet

OK/FAIL LED, one bicolor:
Green—MIC is functioning normally
Yellow—MIC has failed
LINK LED, one green per port:
Off—Not enabled
Green—Online with no alarms or failures
Yellow—Online with alarms for remote failures
Red—Active with a local alarm; router has detected a failure
LEDs
Copyright © 2012, Juniper Networks, Inc.130
MX Series 3D Universal Edge Routers Line Card Guide