Description
Color/State
LED
SFP receiving good remote signal
Green
Carrier/Alarm (C/A)
Remote or local alarm activated
Yellow
SFP ready and operating normally
Green
Active/Loopback(A/L)
SFP port in loopback state
Yellow
T1/E1 Interface Module LEDs
The table below summarizes the LEDs for the T1/E1 interface module.
Table 34: T1/E1 Interface Module LEDs
Description (Two LEDs for Each
T1/E1 Port)
Color/State
LED
Active
Green
Active
Standby
Blinking green
Operationally down; card is
disabled or shut down
Off
All ports up
Green
Port
All ports up and one or more ports
in a loopback state
Blinking green
One or more configured ports are
down
Amber
One or more configured ports are
down and at least one configured
port is in a loopback state
Blinking amber
All ports disabled or shut down
Off
14-Port Serial Interface Module LEDs
The table below summarizes the LEDs for the serial interface module.
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
135
Troubleshooting
Interface Module LEDs