3Com 9400 manual Power-up Diagnostics, System Diagnostics, Gigabit Ethernet Port Diagnostics

30CHAPTER 4: SYSTEM POWER UP

Power-up Diagnostics

The CoreBuilder 9400 system runs diagnostic software at power up. This software verifies that the system works before you add it to the network.

If any component fails during power-up diagnostics, the system fails to power up.

During power up, the system and port status LEDs provide information about the CoreBuilder 9400 system. See Figure 1 in Chapter 1 for the location of the LEDs.

To view error messages that are displayed during power-up diagnostics, connect a terminal, workstation, or PC that has terminal emulation to the system’s Console port. See Chapter 3.

System Diagnostics

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

Power LED Activity

■Green — The system is 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.

Gigabit Ethernet Port Diagnostics

This section summarizes the information displayed by the port LEDs.

Packet LED Activity

■No light — Data is not being transmitted or received by the port.

■Blinking yellow — Data is not being transmitted or received by 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.