This is more an information post if anybody happens to come across a similar issue…  while doing some extensive testing on our new HP C7000 Blade setup, running 10GbE Flex10 modules we came across an issue where the Flex10 modules started playing up and would not load the config, resulting in all network connections connected to the effected switches to go down.

When logging into the HP Virtual Connect Manager it came up with a few issues with the domain, including:

• The external links from the chassis were showing no link
• No Communication error on the Domain Status page.  Stating: The Virtual Connect Manager is unable to communicate with the Onboard Administrator. Please ensure the module has an IP address.
• Cross Link/Stacking links showing as down in some instances

In some instances it was not even possible to bring up the Virtual Connect Manager, it just sat on a loading page for an extensive period of time.  Running the vcutil health check would show random errors such as the following:

vcutil.ex e -a healthcheck -i XXXXXX -u Administrator -p XXXXXX

Domain Configuration: Not In Sync
Module Configuration: Not In Sync
Module Configuration: Invalid

Taking a supportdump using the vcutil package would show errors such as the following:

Saving Virtual Connect Support Information…Error
Could not get Primary VCM IP Address from Bay 1

This problem is solved by removing the DNS servers listed in “Enclosure Bay IP Addressing” for the Flex10 modules, and then rebooting them.

After solving this problem with the help of HP support, I was pointed to this article which seems to describe this exact problem: http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02720395&lang=en&cc=us&taskId=101&prodSeriesId=3794423&prodTypeId=3709945

I hope this saves someone facing the issue a bit of time resolving the issue!