What is the P4 Programming Language? - Northbound Networks

It seems there may be some confusion as to what P4 is, in particular how it relates to OpenFlow. So let's get one thing out of the way first, P4 is NOT a replacement for OpenFlow. They serve two different functions and as a matter of fact, complement each other. Both have a simple set of goals, to increase extensibility and reduce time to market. OpenFlow is a protocol, one that allows the separation of the control and data planes in a network device. By moving the control plane away from the network device onto commodity hardware, it allows the user to develop their own custom logic to centralise and enhance overall network manageability. Then OpenFlow allows these two components to communicate with each other.P4, on the other hand, is a programming language designed explicitly for programming the data plane

The Open Networking Cheat Sheet

What You Should Know About P4 Programming Language& P4 Programmable Switch - SONiC-enabled 1Gb To 400Gb Whitebox Switching

P4 Network Programming Language—what is it all about? - CodiLime

P4-IPsec: Implementation of IPsec Gateways in P4 with SDN Control for Host-to-Site Scenarios – arXiv Vanity

The evolution of SDN in telecom networking Omdia

A survey on data plane programming with P4: Fundamentals, advances, and applied research - ScienceDirect

What you should know about P4 programming language& P4 programmable switch

Software Defined Networking (Part 2) - OMSCS Notes

Forwarding model of P4 - Software-Defined Networking with OpenFlow - Second Edition [Book]

P4 Network Programming Language—what is it all about? - CodiLime