Frequent Contributor II

Clearpass --> controller communication

I installed a new Local controller, and I entered the new controller IP address in the Clearpass network device list.
Now the Clearpass server shows authentication errors in the Event Viewer as:


Received packet from with invalid Message-Authenticator! (Shared secret is incorrect.)


This seems odd to me, since the Local controller got its config from the master controller, and the master and two other Locals are working just fine.


I'm tempted to reset the password on the master controller for the clearpass server and in clearpass under the device list.

But before I do that, I want to make sure that communication between the two doesn't go down...... Is this password only used in those two places?


Thank you,



Guru Elite

Re: Clearpass --> controller communication

The easiest way to check is duplicate the master's device in network device section of ClearPass using the "Copy" button at the bottom and just change the IP to the locals. This ensures the secret is the same.

| Tim Cappalli | Aruba Security | @timcappalli | |

NOTE: Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba or Hewlett Packard Enterprise.

Re: Clearpass --> controller communication

Did you added the local controller to the devices list in ClearPass ? and if so can you confirm it has the same shared key?

Thank you

Victor Fabian
Lead Mobility Architect @WEI
Frequent Contributor II

Re: Clearpass --> controller communication

Hi Tim:

Copying another controller's profile did the trick!

Thank you!


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