What are the requirements for BGP neigbhors to become up? what are the possible issues that can cause BGP peer down or flap? How to troubleshoot BGP peering?

What is VXLAN? Why to use it in Data Center Networks? What are VXLAN Terminologies and Components? How the VXLAN packet encapsulation is structured?

Explore Cisco ACI Tenant: What is Cisco ACI Tenant? What are its components? How are Tenant components related? What is the default ACI tenants?