Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
I know you say that your PortFast is enabled, but you might want to double check... this EXACT same thing(errors) was happening to me and setting the switch to portfast fixed it. We then varified that it was PortFast by disableing PortFast and it bro...