Installation guide

4-3
Cisco 10000 Series Routers Line Card Hardware Installation Guide
OL-6773-04
Chapter 4 4-Port Channelized T3 Half-Height Line Card Overview
LEDs
LEDs
The 4-port channelized T3 half-height line card LEDs are described in Figure 4-1.
Figure 4-1 4-Port Channelized T3 Half-Height Line Card Faceplate Description
Table Table 4-3 provides a description of the 4-port channelized T3 half-height line card LEDs.
1 FAIL LED 3 ALARM LED
2 LOOP LED 4 CARR (carrier detected) LED
119998
CISCO
10000
FAIL
LOOP
ALARM
CARR
T3
T1
0
T3
T1
1
T3
T1
2
T3
T1
3
1
2
3
4
Table 4-3 LED Description
LED Label Color State Meaning
FAIL Yellow Off Off when the line card is working properly. Turns on
for a few seconds during line card power-on self test
(POST), then turns off when the line card is working
properly.
On On when the line card POST fails.
LOOP Yellow Off Off when the port is available for normal operation.
On: T3 Level On when a loopback has been configured at the T3 level,
and the port is not available for normal operation.
Blinking: T3 Level In a redundant pair, the standby line card T3 level
LOOP LED blinks.
On: T1 Level On when a loopback has been configured for any one of
the 28 T1s contained in the DS3 signal.
ALARM
1
1. See the “Channelized Line Cards Troubleshooting Information” section on page 18-6 for alarm information.
Yellow Off Off when the port is operating normally.
On: T3 Level On when a T3 level alarm condition exists on the
corresponding port.
On : T1 Level On when an alarm condition exists on any one of the
28 T1s contained in the DS3 signal.
CARR
(carrier
detected)
Green On On when a carrier is detected at the corresponding
port.
Off Off when a loss of signal (LoS) is indicated.