IBM Support

Troubleshooting Switch-module issues

Troubleshooting


Problem

This document tells you how to troubleshoot switch modules on the IBM BladeCenter

Resolving The Problem

  1. To begin troubleshooting, check the following top issues. If your issue is listed, select the link, otherwise, proceed to step 2.

    Updating the switch-module configuration through the switch does not save the MM NVRAM
    Switch error messages

    The rear of the IBM BladeCenter (Type 8677) provides bays for power, management modules, switch modules and blowers. An information panel is also present. The rear information panel has the same indicators as the front information panel.

    8677 rear view

    To maintain proper system cooling, all module bays must contain either a module or a filler module; all slots must contain either a blade or a filler module.

  2. Check lightpath diagnostics for your BladeCenter:

    BladeCenter (Type 8677)
    BladeCenter JS20
    BladeCenter HS20
    BladeCenter HS40
    BladeCenter T (Type 8720, 8730)

  3. If a new option has been added and your system is not working, complete the following procedure before using the troubleshooting charts:
    1. Remove the option that you just added.
    2. Run the diagnostic tests to determine if your system is running correctly.
    3. Reinstall the new device.

  4. Make sure that the BladeCenter unit has the latest level of firmware code installed.

  5. Check the switch module solutions overview.

  6. If these steps have not solved your problem, refer to "Need more help?"

Updating the switch-module configuration through the switch does not save the management-module NVRAM (all models)

If you log in to the Ethernet switch module directly (through the Ethernet switch-module Web interface or Telnet interface instead of through the management module Web interface) and update the switch module configuration, saving the new configuration saves only to the switch NVRAM, not to the management-module NVRAM. The management module will not be able to communicate with the switch module.

In the management module Web interface, click Switch Tasks, Management, change the New Static IP Configuration values to match the ones in Current IP Configuration, and Apply the configuration.

Back to top


Switch error messages (all models)

Click here for system service part numbers (if part replacement is needed).

Message
Action
Switch fault x
  1. Reseat switch x.
  2. Replace switch x.
Switch module x was removed
Information only. Take action as required.
Switch module x was installed
Information only. Take action as required.
Switch module x was powered on
Information only. Take action as required.
Switch module x was powered on
Information only. Take action as required.
Switch System running nonredundant switch modules
Information only. Take action as required.
Switch module%d IP configuration was changed
Information only. Take action as required.
ENET [X] DHCP HSTN=X, DN=X, IP @= XXX.XXX.XXX.XXXGW @= XXXX.XXX.XXX.XXX, SN= XXX,XXX,XXX,XXX, DNS1@= XXX.XXX.XXX.XXX
Ethernet configuration information. Take action as required.
ENET [X] IP Cfg:HstName= XXXX, IP@= XXX.XXX.XXX.XXX ,GW@= XXX.XXX.XXX.XXX, NetMsk= XXX.XXX.XXX.XXX Switch module x was installed
Ethernet configuration information. Take action as required.
LAN: Ethernet [x] interface is no longer active
Check cables to switch.
LAN: Ethernet [x] interface now longer active
Information only. Take action as required.

Note: See "Parts listing, BladeCenter Type 8677" in the BladeCenter Hardware Maintenance Manual to determine which components should be replaced by a field service technician.

Back to top


Need more help?
Please select one of the the following options for further assistance:

//www.ibm.com/i/v14/icons/fw.gif Support forums
//www.ibm.com/i/v14/icons/fw.gif Submit a technical question
Before you call IBM Service

 

Document Location

Worldwide

Operating System

System x Hardware Options:Operating system independent / None

[{"Type":"HW","Business Unit":{"code":"BU016","label":"Multiple Vendor Support"},"Product":{"code":"HW20U","label":"System x Hardware Options->BladeCenter Switch Module"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
29 January 2019

UID

ibm1MIGR-58891