1-6
OC12 Packet Over SONET Line Card Installation and Configuration
OL-3437-01
Chapter 1 Overview
LEDs
To calculate link losses and dispersion losses for your application, refer to the following specifications
and documents:
•
EIA/TIA-IVa Dispersion Unshifted Single-Mode Fiber
•
EIA/TIA-IVb Dispersion Shifted Single-Mode Fiber
•
GR-20-CORE Generic Requirements for Optical Fiber and Fiber-Optic Cable
•
ITU-T Recommendation G.957 Optical Interfaces for Equipments and Systems Relating to the
Synchronous Digital Hierarchy
LEDs
The OC12 POS line card faceplate has two LEDs that indicate line card status and two LEDs per port
that indicate interface status. (See
Figure 1-7
LEDs on the OC12 POS Line Card
After system initialization, the STATUS LED goes on to indicate that power is received and that the
OC12 POS line card is enabled for operation.
The following conditions must all be met before the OC12 POS line card is enabled:
•
The OC12 POS line card is correctly connected and receiving power.
•
The system bus recognizes the OC12 POS line card.
•
A valid version of microcode is loaded and running.
If any one of these conditions is not met, or if the initialization fails, the STATUS LED does not go on.
lists LED colors and indications.
7300-2OC12POS-MM
2-PORT OC-12 POS MM
OIR
STATUS
CARRIER/
ALARM
ACTIVE/
LOOPBACK
75153
RX
0
TX
CARRIER/
ALARM
ACTIVE/
LOOPBACK
RX
1
TX
Table 1-2
OC12 POS Line Card LEDs
LED Label
Color
State
Function
STATUS
Green/Yellow
Green
Indicates line card is online.
Yellow
Indicates line card bootstrapping is in progress.
Off
Indicates line card is offline and deactivated.
OIR
Green
On
Line card is ready to be removed in
CLI-controlled OIR.
Off
Line card is online.
