Table of Contents
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Chapter 1
Overview
Table 1-2
LED Label
CARRIER/ALARM Green/Yellow
ACTIVE/
LOOPBACK
Alarms
A yellow CARRIER/ALARM LED indicates the presence of an alarm condition.
alarm conditions that might be present. Use the show controllers command to show the specific alarm
condition.
Table 1-3
Alarm
Section
LOF
LOS
BIP(B1)
Line
AIS
RDI
FEBE
BIP(B2)
Path
AIS
RDI
FEBE
BIP(B3)
PLM
UNEQ
TIM
TIU
LOP
OL-3437-01
OC12 POS Line Card LEDs (continued)
Color
Green/Yellow
Alarm Definitions
Definition
loss of frame
loss of signal
Bit Interleaved Parity N
alarm indication signal
remote defect indication
far end block error
Bit Interleaved Parity N
alarm indication signal
remote defect indication
far end block error
Bit Interleaved Parity N
Path Payload Label Mismatch
Path Unequipped
Trace Identifier Mismatch
Trace Identifier Unstable
loss of pointer
State
Function
Green
Indicates that a valid SONET signal has been
detected with no alarm conditions.
Yellow
Indicates that an alarm condition is present. See
Table 1-3
for alarm definitions.
Off
No valid SONET signal has been detected.
Green
Indicates that the port has been configured and is
enabled.
Yellow
Indicates that the port is in diagnostic loopback
mode.
Off
Indicates that the port has not been configured.
OC12 Packet Over SONET Line Card Installation and Configuration
LEDs
Table 1-3
lists the
1-7
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