The 2nd ETSI TeraFlowSDN Hackfest


ETSI’s Centre for Testing and Interoperability and the TeraFlowSDN community are organizing the 2nd TFS Hackfest on 20-21 June 2023. The event will be held during the IEEE NetSoft Conference in Madrid, Spain.

Participation in ETSI Hackfests is free and open to all upon registration, you are most welcome to extend this invitation to your colleagues and partners.

Registration to NetSoft2023 is encouraged, but not mandatory.


Universidad Carlos III de Madrid, Campus Madrid – Puerta de Toledo

Ronda de Toledo, 1 – 28005 Madrid

More details at: Venue & Accommodation


The event will take the form of a competition with the objective of integrating ETSI TeraFlowSDN Controller Release 2 with the ContainerLab environment. ContainerLab is an environment that enables deploying versatile lab network topologies where each node can run a containerized Network Operating System, allowing to establish and test connectivity services traversing the network devices.

Participants will be grouped in teams and each team will collaborate to complete the following list of challenges (tentative):

  • Deploy a ContainerLab environment together with ETSI TeraFlowSDN controller
  • Onboard the network devices emulated with ContainerLab in TeraFlowSDN
  • Establish packet connectivity services through ContainerLab network devices
  • Monitor the packet traffic on ContainerLab devices, e.g., through gNMI, and plot the data in TFS’s L3 Monitoring Grafana dashboard

Each team is expected to focus on a specific ContainerLab network device kind, e.g., IPInfusion OcNOS, Nokia SR Linux, SONiC, etc. Some ETSI TFS experts will be around to help you and resolve your questions during the hacking sessions.

NOTE: It is under study the possibility of involving P4 in the challenge through SONiC (To Be Decided).


  • Registration is mandatory!
  • Participants are expected to have user-level knowledge of Linux.
  • Participants will need their laptop, with an environment running Linux and a Kubernetes-based environment installed. You are invited to use the Virtual Machine we provide with pre-installed material (see Hackfest Material)

Who should attend

  • Network Operators and Service providers, who want to get first-hand operational experience with TeraFlowSDN Controller
  • System Integrators, who want to develop their expertise with TeraFlowSDN
  • Academia and Universities, who are using or considering TeraFlowSDN as a platform for their research activities in networking
  • TeraFlowSDN developers and users that want to share and test with the community
  • Members of other research projects interested in using TeraFlowSDN Controller in their research and proof-of-concept activities.

Agenda (Tentative)

Tuesday 20 June 2023

  • Welcome & Logistics (ETSI)
  • TeraFlowSDN 101 (TFS Chair & TFS TSC Chair)
  • Group Picture
  • Lunch Break
  • Introduction to ContainerLab, gNMI, (P4 TBC) (TBD)
  • Presentation of the challenges and how to report bugs (TFS TSC Chair)
  • Form the teams
  • Team-Hacking Starts!
  • Wrap-up day 1

Wednesday 21 June 2023

  • Brief discussion and progress checkpoint
  • Team-Hacking!
  • Lunch Break
  • Team-Hacking!
  • Final presentations: Teams will present their achievements (5-10 min per team)
    • Progress, Working experiment, Results, etc.
    • Feedback (Road blocks, Missing documentation, Report bugs, etc)
  • Winner announcement (TFS TSC Chair)
  • Wrap-up day 2 & end of Hackfest

Hackfest Material

·  We have created a VM pre-packed with the material and Graphical interface. Download it from TFS Release2 VM (18 GB) Dropbox or TFS Release2 VM (18 GB) Onedrive

·  Material from previous events: TFS Events

Get involved in ETSI TeraFlowSDN


Please send your technical questions to or join the TFS Community Slack Workspace

Questions about ETSI, joining TFS, this Hackfest and future events can be sent to: