Knowledge Article: ID B00101000: One or more blades are isolated from the management bus.

Description

The advanced management module cannot communicate with one or more blade servers and isolates the blade servers from the management bus.

Causes

When the advanced management module fails to communicate with any blade server, it tries to disconnect and reconnect to each blade server. If a failed blade server is not recovered, this log entry is written.

Implications

The blade server that is experiencing communication failure might not work as designed.

Resolutions

Perform these steps:

1. View the System Status Summary page through the advanced management module Web interface to determine which blade servers have been isolated.
   
2. Attempt to reset the service processor for each of the blade servers. You can reset the service processor through the advanced management module Web interface, from the Blade Power/Restart page.
   
3. Reseat each of the blade servers.

Additional information

To find additional troubleshooting help, visit the "IBM Support & downloads" Web site, select "BladeCenter" for "Browse products for support" panel. At "Support & downloads quick start" page, select your product for "Choose your products", and "Troubleshooting" for "Choose your page", then select "View your page" for "See your results". To narrow the results, search with keywords that are related to this article, such as "fail", "Chassis", etc. in the "Search support" field at the right panel.

To download the latest firmware or drivers, visit the "Fix Central" Web site, select "BladeCenter" for "Product Group" (from the pull-down lists), select your product for "Product" (from the pull-down lists), select your product machine type for "Product" (from the pull-down lists), and select your operating system for "Operating system" (from the pull-down lists). You can refine the search by selecting the category of the download of your interest from the "Refine results" list.