A presentation by the P4 Language Consortium

Held at Cornell Tech on Friday, March 9, 2018

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Agenda


  • 8:00 - 8:30am

    • Registration and Breakfast

  • 8:30 - 9:00am

    • Technical Set-up for Hands-on Lab

      In order to complete the Developer Day exercises, we will distribute a virtual machine with all required software installed.


  • 9:00 - 9:10am

    • Welcome and Introductions

  • 9:10 - 10:45am

    • Introduction to Data Plane Programming

    • Language Basics

      Session 1 will provide a hand-on introduction to P4. Students will start by implementing a “Hello World”-style application to gain an understanding of P4 concepts. The lesson will progressively introduce core language features, such as header/metadata types, packet parsers, and controls. By the end of this session, students will be able to implement a basic IP router.


  • 10:45 - 11:15am

    • Break

  • 11:15 - 11:50

    • Software Tools

      Session 2 will cover software tools that are essential to developing P4 applications. Students will learn how to invoke the the P4 compiler, run the debugger, and start a P4 software switch. This session will also introduce the control-plane interfaces via P4 Runtime, a protocol-independent API auto-generated from the definition of a packet processing pipeline written in P4.

  • 11:50 - 12:10

    • Keynote - Jennifer Rexford (Princeton University)

  • 12:10 - 1:30pm

    • Lunch

  • 1:30 - 3:00pm

    • Monitoring and Debugging

      Session 3 will focus on a set of labs related to network monitoring and debugging. In this session, students will gain a deeper understanding of P4 language concepts, including custom headers and intrinsic metadata. In the first exercise, students will implement Explicit Congestion Notification (ECN) to set a congestion bit in a packet header when the queue depth exceeds a threshold. In the second exercise, MRI, students will implement a simplified version of In-Band Network Telemetry to track the path that packets travel through the network.


  • 3:00 - 3:30pm

    • Break

  • 3:30 - 4:50pm

    • Advanced Data Structures

      Session 4 covers advanced data structures. In this session, students will implement two data-plane applications. In the first, source routing, end-hosts specify paths through the network by using a stack of labels in the packet header. The switch must “pop” each label and forward out the appropriate interface. In the second, students will implement a network calculator. Packets containing arithmetic expressions are sent to a switch. The switch will evaluate the expressions, and return the results back to the sender.


  • 4:50 - 5:00pm

    • Break

  • 5:00 - 5:50

    • Panel Discussion (Panelists TBA)

  • 5:50-6:00

    • Closing Remarks

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