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ataranen
Beginner
Beginner
‎10-14-2016 05:00 PM
‎10-14-2016 05:00 PM

APIC failing to form Cluster

I have 3 APIC controllers running version 1.2(3c). 
After doing the initial setup and discovering fabric nodes, the APIC do not form a cluster. The 1st controller is "available" while the other 2 get listed as "Unauthorized Controllers" as shown in the attached image.
I reinstalled the OS, and made certain the initial configuration is correct, still nothing. What could be the issue ?  

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ataranen
Beginner
Beginner
‎10-14-2016 06:27 PM
‎10-14-2016 06:27 PM

Found the cause. 2 apic's had a clock out of sync. After changing clock on the server using F2 option, the cluster has formed. 

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ataranen
Beginner
Beginner
‎10-14-2016 06:27 PM
‎10-14-2016 06:27 PM

Found the cause. 2 apic's had a clock out of sync. After changing clock on the server using F2 option, the cluster has formed. 

View solution in original post

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