![](/images/backgrounds/142068/bg29.png)
One tricolor per port:
■Off—Not enabled
■Green—Online with no alarms or failures
■Amber—Online with alarms for remote failures
■Red—Active with a local alarm; router has detected a failure
LEDs
■Alarm indication signal (AIS)
■Equipment failure (does not affect service)
■Frame error
■Line code violation
■Loss of signal (LOS)
■Out of frame (OOF)
■Yellow alarm bit (A-bit) disagreements
Alarms, errors, and
events
■Layer 2 per-queue packet and byte countersInstrumentation
(counters)
E3 IQ PIC ■41
E3 IQ PIC