Enterasys A4H124-24, Hardware Installation Manual

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Checking the LEDs
Enterasys A4 Fast Ethernet Switch Hardware Installation Guide 3-5
Link/Activity LEDs
Table 3-6 describes the status of RJ45 and SFP port LEDs.
Green
Solid. System is fully functional. None.
Blinking. Boot-up in process. None.
Table 3-5 CPU LED Definitions
Color State Recommended Action
Table 3-6 Port LED Definitions
Color State Recommended Action
Off
No link. None.
No activity or port in standby. None.
Cable is faulty. Replace cable.
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.