Cisco 10000 Series Troubleshooting Guide

4-4
Cisco 10000 Series Router Troubleshooting Guide
OL-0439-02
Chapter 4 Troubleshooting Line Cards
Troubleshooting the Channelized T3 Line Card
Troubleshooting the Channelized T3 Line Card
Figure 4-2 describes the LEDs on the channelized T3 line card faceplate to help you verify proper
operation.
Figure 4-2 LED States on the Channelized T3 Line Card
29991
LED Status Description
Fail
Carrier (carrier detect)
Alarm
Loop (active loop)
Yellow
Off
Green
A major failure has disabled the
line card.
The line card is operating
properly.
Carrier detected; the port is
able to pass traffic.
No carrier detected; the port is
not able to pass traffic.
Indicates an alarm condition at
DS1, AIS, DS1 remote,
DS1 OOF, DS3 OOF, DS3 AIS,
or DS3 FERF 1 level.
No alarm condition.
Port is in a loopback state and
not enabled for data traffic.
Port is not in a loopback state.
Off
Off
Off
Yellow
Yellow
CISCO
10000
C
A
R
R
IE
R
A
L
A
R
M
L
O
O
P
FAI L
6XCT3–DS0
0
5
4
3
2
1

Cisco 10000 Series Specifications

General

Brand	Cisco
Model	10000 Series
Category	Network Router
Language	English