SQL Server with Mr. Denny

Feb 20 2012   2:00PM GMT

Cisco UCS and the dreaded unsupported-connectivity error

Denny Cherry Denny Cherry Profile: Denny Cherry

So while installing a new Cisco UCS system with the one of the newer builds of the firmware which was 2.0(1s) we were getting an error with both chassis which said they were in an unsupported-connectivity state.  The config that we setup was pretty basic and straight forward.  We have two UCS Fabric Interconnects, with two chassis, and two cables from each blade in each chassis going to the Fabric Interconnects.  There’s a diagram over there of what the system looks like for one of the two chassis (I love the fact that the management app makes nice diagrams like this).

When you configure a Cisco UCS system you tell the system how many cables the Fabric Interconnects should use to discover each chassis.  At least that is how the screen is worded.  What the setting actually means is how many cables should the Fabric Interconnects expect to see between each Interconnect and each blade in the chassis.  We configured the setting for “Platform Max” in case we decided to add more cables later even though we only had two cables now, and only planned on having 2 cables (as shown in the diagram) for the time being.  When we were set this way we had this strange unsupported-connectivity state error showing up for each of the chassis.

To fix this problem we had to change the discovery policy from “Platform Max” to 2 as shown in the below screenshot.

To make this change in the UCS Manager and select the equipment tab in the left menu.  On the right select Policies tab.  In the new lower tab menu select “Global Policies”.  From there you can change the Chassis Discovery Policy which you can see in the screenshot below.

Hopefully this helps you if you run into this problem.

Thanks,
Denny

1  Comment on this Post

 
There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when other members comment.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
  • Denny Cherry
    [...] and stores it as a profile. This creates it easy to muster or reinstate server hardware, since UCS Manager can be used to duplicate or automatically reassign addresses and pattern information to new or [...]
    0 pointsBadges:
    report

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to: