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p4_twamp_reflector

p4_twamp_reflector is the TWAMP reflector implementation (see RFC 5357 Two-Way Active Measurement Protocol) in the P4 language for bmv2 software switch. It also contains the TWAMP control server implemented in Python. p4_twamp_reflector uses p4app containing mininet with bmv2 switches for build, run and test.

More information about the design of p4_twamp_reflector can be found in an presentation in /docs/ folder.

Installation

  1. Install docker if you don't already have it.

  2. If you want, put the p4app script somewhere in your path. For example:

    cp p4app /usr/local/bin

Usage

To start a P4 switch with the TWAMP reflector and the TWAMP control server just run:

./start.sh

To run the TWAMP client (you can choose twampy or twping client implementation) run within mininet prompt:

h1 sh /tmp/twampy.sh

or

h1 sh /tmp/twping.sh

Testbed and implementation details

Our emulation environment is composed by one P4 switch emulated with Mininet. The switch connects to a single host.

The debug mode for the switch can be enabled by using:

    ./debug_switch1.sh

The terminal for the host is available by using:

    ./xterm_h1.sh