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Here is the document step by step vpc configuration and troubleshooting tips.
http://aqlearningcenter.blogspot.com/2017/11/cisco-nexus-vpc-configuration-step-by.html
Regards,
Error disable nice document for quick resolution
http://aqlearningcenter.blogspot.com/2017/11/cisco-switch-ports-in-error-disable.html
Regards,
Qasim
AQ learning Center
