Juniper Networks RELEASE 8.1.X E320 - Manual (Page 39)

Board-level LEDs:
■ OK (green)—Physical link is connected properly and is functioning properly
■ FAIL (red)—Failure detected
Port LEDs:
■ ALM—Bi-color LED:
■ Yellow: Local loss of signal exists
■ Red: Remote loss of signal exists
■ OK (green)—SONET is up and port is functioning properly. If not lit, a problem
exists.
LEDs
■ See Monitoring SONET/SDH Interfaces in JUNOSe Physical Layer Configuration Guide,
Chapter 3, Configuring Unchannelized OCx/STMx Interfaces. Alarms, errors, and events
OC12/STM4-2 POS IOA ■ 39
OC12/STM4-2 POS IOA