Cisco Systems 901 T1/E1 Interface LEDs, SFP Ethernet Interface LEDs, Color/State Description

Appendix A Troubleshooting

Reading the LEDs

T1/E1 Interface LEDs

Table A-5summarizes the LEDs on the T1/E1 interface (available only for A901-12C-FT-D and A901-4C-FT-D).

Table A-5	T1/E1 Port LEDs
LED	Color/State	Description (two LEDs for each T1/E1 port)
Active	Green	Carrier condition—operating without problem
(labeled C,
	Yellow	Loop condition
left LED)
	Off	Out of service or not configured
Alarm	Yellow	Alarm condition
(labeled AL,
	Off	No alarm
right LED)

SFP Ethernet Interface LEDs

Table A-6gives information about the LEDs on the SFP interface.

Table A-6	SFP LEDs
LED		Color/State	Description
SFP Link/Active		Orange	Link and active indicator
(labeled LINK ACT)
		Off	Link not enabled

RJ-45 Ethernet Interface LEDs

Table A-7summarizes the LEDs on the RJ-45 Ethernet interface.

Table A-7	100/1000 Ethernet Port LEDs
LED	Color/State	Description (two LEDs for each 100/1000 Ethernet port)
100/1000	Solid Green	Link with no activity
RJ-45 link
	Flash Green	Link with activity
(labeled L,
	Off	No link detected
left LED)
100/1000	Green	Speed 1000
RJ-45 speed
	Yellow	Speed 100
(labeled S,
	Off	Off
right LED)

Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide

OL-23778-01 A-5