Checking the LEDs
3-6 Troubleshooting
CPU LED
TheCPULEDindicatesthestatusofthesystemoperation,asdescribedinTable 3‐5.
Link/Activity LEDs
Table 3‐6describesthestatusofRJ45portLEDs.Table 3‐7describesthestatusofRJ45PoELEDs.
Table 3‐8describesthestatusofSFP/10GportLEDs.
Table 3-5 CPU LED Definitions
Color State Recommended Action
Off Power disconnected. If the LED remains off after connecting AC 
power or DC power from an RPS, check the 
following:
1. Make sure there is power at the power 
source (AC source and RPS if applicable).
2. Replace the power cord with a known 
good one or check the continuity of the 
power cord.
3. If the switch still does not power up, the 
system may have a fatal error. Contact 
Enterasys Networks for technical support.
Red Solid. Boot-up failed. If the LED remains red for several minutes, 
the system may have a fatal error. Contact 
Enterasys Networks for technical support.
Amber Solid. Diagnostics are running. If the LED remains amber for more than 
several minutes, contact Enterasys Networks 
for technical support.
Blinking. Code image is being 
downloaded.
None.
Green Solid. System is fully functional. None.
Blinking. Boot-up in process. None.
Table 3-6 RJ45 Port LED Definitions
Color State Recommended Action
Off No link. None.
No activity or port in standby.  None.
If the port is one of the highest numbered 
last four RJ45 ports, the port is 
deactivated because the SFP/10G port 
with the same port number is linked.
None.
Green Solid. Port is linked, but the interface is 
not receiving any traffic.
None.
Blinking. Port is linked and traffic is being 
received or transmitted by the interface.
None.