Table 6. Troubleshooting charts (continued)

Device

Suggested action

 

 

CD-ROM drive is not

When the CD-ROM drive is owned by blade server x, is switched to another blade

recognized after being

server, then is switched back to blade server x, the operating system in blade server

switched back to blade server

x no longer recognizes the CD-ROM drive. This happens when you have not safely

running on Windows 2000

stopped the drives before switching ownership of the CD-ROM drive and USB ports

Advanced Server with SP3

(media tray).

applied.

Note: Because the BladeCenter T 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 CD-ROM

 

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 Mass Storage Device and click Stop.

 

3. Click Close.

 

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

 

 

CD-ROM problem.

Replace the CD-ROM drive.

 

 

Ethernet controller problems

 

 

 

Operating systems number

Enumeration of the Ethernet controllers in a blade server is operating-system

Ethernet controllers

dependent. In the blade server Configuration/Setup Utility program, the Ethernet port

differently.

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 switch 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

When you use the Ethernet switch module Telnet interface to request the switch

switch module through Telnet

module to ping something, the first ping response reports a failure, although the other

reports failure.

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 T Installation Guide for instructions on how to ping through the Telnet

 

interface.

 

 

Ethernet switch-module

If the Wake-on-LAN (WOL) feature is disabled on a blade server, and the blade

firmware graphics shows a

server is turned off, the switch module internal port link to that blade is down. This is

blank panel when the blade

not an error, but the graphic of the BladeCenter T unit might show a blank panel

server is present but powered

instead of a blade server in that bay.

off.

Note: You can enable or disable the WOL feature on a blade server through the

 

management-module Web interface or through the IBM Director console. Do not rely

 

on the BladeCenter T graphic in the Ethernet switch-module firmware Web interface

 

to determine the presence or absence of blade servers in the BladeCenter T unit.

 

 

Ethernet switch-module log

The timestamp on entries in the Ethernet switch module log uses elapsed time (since

reports elapsed time, not time

last switch restart). The timestamp on entries restarts from 0 each time the switch is

of day.

restarted, although the entries do remain in order of occurrence.

 

 

Chapter 6. Symptom-to-FRU index 93

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Page 103
Image 103
IBM Type 8720 manual Device Suggested action, Select USB Mass Storage Device and click Stop, Ethernet controller problems
Page 102 Page 104

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