Description
The Chassis Management Module (CMM) cannot communicate with the specified I/O module.
Causes
The Chassis Management Module (CMM) cannot communicate with the specified I/O module.
Implications
The I/O module might be operating normally, but the CMM cannot detect whether there are problems with the specified device. This is an internal Ethernet issue for advanced communication. The I2C interface is independent.
Resolutions
Temporarily disable all communication between the nodes and the specified I/O module in the chassis to reduce interruptions to the services that the nodes provide. Perform a service-level reset of the I/O module, which restarts the I/O module. If the service-level reset does not correct the problem, replace the I/O module.
Additional information
To find additional troubleshooting help, visit the "IBM Support & downloads" Web site. At "IBM Support Portal: Quick start" page, select Browse for "Choose your products", select your Chassis from PureFlex System under the Hardware list, and "Troubleshoot" for "Choose your page", then select "Continue" 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 "PureSystems" 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.
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