praveingk / syndb-p4

SyNDB P4 source

SyNDB (Synchronized Network Debugger)

This source code enables obtaining synchronized network snaphot of recent history in the network.

Paper Link 👉 https://www.usenix.org/system/files/nsdi21-kannan.pdf

Source Code Pointers

Switch Code

The switch data-plane code is written in P4 programming language. Once this code is up and running, the virtual switches are synchronized to a global time, and start recording packets. They generate precords to the collector when the configured trigger condition is hit.

Steps to run p4_14 based SyNDB in Tofino:

1. Navigate to the SDE PATH :

     cd ~/bf-sde-8.x.x
     export SYNDB_PATH=<PATH TO SYNDB FOLDER>

2. Set the env variables :

     . ./set_sde.bash

3. Build the p4 program using the command :

     ./p4_build.sh $SYNDB_PATH/syndb.p4

4. Load the p4 program, and run the control plane API code using :

     cd $SYNDB_PATH/v_14/CP
     ./run.sh