VPC or Virtual Port channel is the concept of joining two switches together and make them function as if they were a single switch and act to connected devices as one logical switch. VPC is currently available on the Cisco Nexus 5000 and 7000 series switches, as well as some high-end Catalyst models.
We have covered the following topics in both the blog and the video:
vPC Overview and Operation
Configuration and Show commands
vPc Failure Recovery
General Recommendations to ensure Stable operation of a Virtual Port-channel topology.