20
Front panel
Figure 16
Front panel
(1) Captive screw
(2) Ejector lever
(3) PASSTHRU LED of the MAC RPR node
(4) WRAP LED of MAC RPR node
(5) MAC MATE interface LED
(6) STEER LED of the MAC RPR node
(7) External SFP port of the MAC RPR node
(8) MAC external SFP port carrier signal LED (LINK/ACT)
(9) MAC external SFP port loopback/alarm LED (LP/AL)
(10) Mate interface of the MAC RPR node
LEDs
Table 19
LED description
LED Status
Description
RPR status
PASSTHRU
(Green)
Off
The node is not in PASSTHRU.
On
The node is in PASSTHRU.
MATESYNC
(Green)
Off
The mate interface is not synchronized.
On
The mate interface is synchronized.
WRAP
(Yellow)
Off
No WRAP exists.
On
WRAP occurs on this node.
Flashing (0.5 Hz) WRAP occurs on another node.
STEER
(Yellow)
Off
No STEER exists.
On
STEER occurs on this node.
Flashing (0.5 Hz) STEER occurs on another node.
External optical
interface
SDH/SONET at
physical layer
LINK/ACT
(Green)
Off
No carrier signals are being received.
On
Carrier signals are being received.
Flashing (4 Hz)
Data is being transmitted or received.
LP/AL
(Yellow)
Off
No loopback or alarms occur.
On
The port is in loopback state.
Flashing (0.5 Hz)
A minimum of one alarm, AIS, LFA, or RAI, occurs.
