A-4
Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide
OL-23778-01
Appendix A Troubleshooting
Reading the LEDs
Reading the LEDs
The following sections describe the LEDs on the Cisco ASR 901 router.
• Chassis LEDs
• T1/E1 Interface LEDs
Chassis LEDs
Table A-4 summarizes the LEDs on the chassis of the Cisco ASR 901 router. These LEDs are common
to all versions of the Cisco ASR 901 router.
Table A-4 LED Summary
Copper GE ports (from GE/FE Quad PHY) contain will have Two LEDS each
RJ-45 Link
L
Solid Green PHY Link with no activity
FLASH Green Link with activity
Off No link
RJ-45 Speed
S
Green PHY Speed 1000
Off off
T1/E1 ports contain Two LEDs each
Alarm
AL
Off WP2 Not configured
Yellow Alarm Condition
Active
C
Off WP2 Out of Service / Not configured
Green Carrier Condition (all-ok)
Copper GE (from Quad combo PHY) ports contain Two LEDS each.
RJ-45 Link
L
Solid Green PHY Link with no activity
FLASH Green Link with activity
Off No link
RJ-45 Speed
S
Green PHY Speed 1000
Off off
System LED
System Off HP No power or unit not boot-up
Alternating
Green/Off
POST in progress
Solid Green System Healthy (normal
operation)
Solid Red System Faulty
SFP LED
SFP Link-Active
L-A
Orange HP Link and Active Indicator
Off Not Enabled
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