IBM ATM OC-3c Checking the Power Supply, Checking that the ATM Module is Installed Correctly

Checking the Power Supply

Check the MGMT LED on the Switch. If the MGMT LED is not lit there is a power supply problem. Try the following troubleshooting procedures:

1Check that the power supply is plugged into the device, using a power outlet that is known to be working.

2Check that the main power supply switch on the wall is set to the ON position.

3Check and if necessary change the fuse on the Switch or plug, and then power-up the Switch. Refer to the user guide that accompanies your Switch for details about fuses and safety instructions.

4Replace the power cable with a cable known to be working, and power-up the Switch.

5Contact Technical Support. Refer to Appendix E.

Checking that the ATM Module is Installed Correctly

Power up the Switch and check that the Module LED (or Downlink Status LED) on the front of the Switch is lit green.

If the MGMT LED is not lit green, you should remove and then re-install the ATM module.

You can confirm that the ATM Module is installed correctly by accessing the local management screens, as described in “Logging On” on page 7-3. If the ATM Module is installed correctly, the ATM CONFIGURATION option appears in the Main Menu.

Post-Installation Checks 6-7

If the ATM CONFIGURATION option does not appear:

■You may have an incompatible version of the software. Refer to the “Release Notes” for details of which version of the software should be downloaded.

■It could be that the ATM Module is still initializing. If the ATM Module is still initializing, the MGMT LED flashes green.

Checking the Physical Connections

This section assumes that the ATM Module is correctly installed.

Check that the Link Status and Far End Status LEDs on the ATM Module are lit green. If one or both of the LEDs is not lit, there is a problem with the physical connection. Follow the troubleshooting information below:

1Ensure that both devices are powered-up, and that the ports at both ends of the link are enabled.

2Ensure that the cable is securely connected to the port at both ends of the link.

3Check each end of the cable to ensure that each of the fiber connectors is correctly connected. If your cable connectors can be reversed, you may need to reverse the TX and RX cable connectors at one end of the link.

Some cable connectors have been designed so that they cannot be fitted incorrectly. Never use excessive force to connect cables.