IBM 8677 - BladeCenter Rack-mountable - Power... Hardware Maintenance Manual And Troubleshooting Manual Download

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Table 2. Troubleshooting charts (continued)

Device

Suggested action

Optical drive is not
recognized after being
switched back to blade server
running on Windows 2000
Advanced Server with SP3
applied.

When the optical drive is owned by blade server

, is switched to another blade

server, then is switched back to blade server

, the operating system in blade server

no longer recognizes the optical drive. This happens when you have not safely

stopped the drives before switching ownership of the optical drive, diskette drive, and
USB port (media tray).

Note:

Because the BladeCenter unit uses a USB bus to communicate with the media

tray devices, switching ownership of the media tray to another blade server is the
same as unplugging a USB device. Before switching ownership of the optical drive
(media tray) to another blade server, safely stop the media tray devices on the blade
server that currently owns the media tray, as follows:

1. Double-click the

Unplug or Eject Hardware

icon in the Windows taskbar at the

bottom right of the screen.

2. Select

USB Floppy

and click

Stop

3. Select

USB Mass Storage Device

and click

Stop

4. Click

Close

You can now safely switch ownership of the media tray to another blade server.

Optical drive problem.

1. Replace the optical drive

2. Replace the CD interposer card

3. Replace the optical drive signal cable

4. Replace the optical drive power cable

Ethernet controller problems

Operating systems number
Ethernet controllers
differently.

Enumeration of the Ethernet controllers in a blade server is operating-system
dependent. In the blade server Configuration/Setup Utility program, the Ethernet port
designated as Planar Ethernet 1 is routed to Ethernet switch module 2 and the
Ethernet port designated as Planar Ethernet 2 is routed to Ethernet switch module 1.

Verify the designations through your operating system settings or by testing:

1. Install only one switch module, in I/O-module bay 1.

2. Enable only one of the Ethernet controllers on the blade server. Make note of the

designation the blade server operating system has for the controller.

3. Ping an external computer on the network connected to the switch module.

If you can ping the external computer, the Ethernet controller you enabled is the
upper controller in the blade server and is associated with Ethernet switch 1.

Ethernet switch module problems

First ping from Ethernet
switch module through Telnet
reports failure.

When you use the Ethernet switch module Telnet interface to request the switch
module to ping something, the first ping response reports a failure, although the other
repetitions might report success. This occurs regardless of whether the switch module
port the pinged object is connected to is internal or external, and applies to pinging
blade servers but not to pinging the management module or objects connected to its
external Ethernet port, such as the network management station. To get accurate
results, always specify multiple repetitions (>1) in the ping request, and ignore the
first ping response from that request. See the

IBM 4-Port Gb Ethernet Switch Module

for BladeCenter Installation Guide

for instructions on how to ping through the Telnet

interface.

Chapter 6. Symptom-to-FRU index