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A-5
Cisco ASR 901 10G Series Aggregation Services Router Hardware Installation Guide
OL-28105-02
Appendix A Troubleshooting
Reading the LEDs
T1/E1 Interface LEDs
Table A-5 summarizes the LEDs on the T1/E1 interface (available only for A901-12C-FT-D,
A901-4C-FT-D, A901-6CZ-FT-D, and A901-6CZ-FT-A).
SFP Ethernet Interface LEDs
Table A-6 gives information about the LEDs on the SFP interface.
10G SFP+ Ethernet Interface LEDs
Table A-6 gives information about the LEDs on the 10G SFP+ interface.
10G SFP+ LED
SFP Link-Active
L-A
Orange HP Link and Active Indicator
Off Not Enabled
Table A-4 LED Summary
Table A-5 T1/E1 Port LEDs
LED Color/State Description (two LEDs for each T1/E1 port)
Active (labeled C, left
LED)
Green Carrier condition—operating without problem
Yellow Loop condition
Off Out of service or not configured
Alarm (labeled AL,
right LED)
Yellow Alarm condition
Off No alarm
Table A-6 SFP LEDs
LED Color/State Description
SFP Link/Active
(labeled LINK ACT)
Orange Link and active indicator
Off Link not enabled
Table A-7 10G SFP+ LEDs
LED Color/State Description
SFP+ Link/Active
(labeled 10GSFP)
Orange Link and active indicator
Off Link not enabled