System Diagnostics; Power Led Activity; Fault Led Activity; Ethernet Port Diagnostics - 3Com SuperStack II 10005622 Getting Started Manual

System Diagnostics

This section describes the LEDs that provide
information about the system as a whole.

Power LED Activity

Green — The system is powered on; the system is
running or has run diagnostics.
No Light — The system has no power; no
diagnostics are running.

Fault LED Activity

No Light — System diagnostics have been
successfully completed and the system is
operational.
Solid or Blinking Yellow — The system has failed
diagnostics, or some other operational error has
occurred.
See Chapter 6 for troubleshooting information.

Ethernet Port Diagnostics

This section summarizes the information displayed by
the port LEDs.

Packet LED Activity

No Light — Data is not passing through the port.
Blinking Yellow — Data is passing through the
port.
Yellow — Data is passing through the port.

Status LED Activity

No Light — The port is off-line.
Blinking Green — The port is online but disabled.
Green — The port is online and enabled.
See Chapter 6 for troubleshooting information.
Power-up Diagnostics 4-3