• Testing IXP Configurations Without Breaking Production: A Digital Twin Approach Tommaso Caiazzi Tommaso Caiazzi is an Assistant Professor (RTDa) at Roma Tre University, Italy. • His research focuses on computer networks, data center networking, programmable and high-speed packet processing, network resilience, and cybersecurity. • He is a maintainer of Kathará.More 7 min read Share Configuration mistakes at an IXP can have immediate impact. • Building on the earlier IXP Digital Twin project, this article presents a new dashboard that enables operators to recreate production environments, validate routing state, and test member onboarding off production. • Validating route server configurations and onboarding new customers at an Internet Exchange Point carries inherent risk. • A misconfigured filter, an overlooked prefix limit, or an untested policy change can propagate across the fabric and affect dozens of networks in seconds.

Article Summaries:

  • The article announces a new dashboard that lets Internet Exchange Point (IXP) operators test route‑server changes and customer onboarding in a sandboxed “digital twin” before deploying to production. Building on the earlier IXP Digital Twin project, the tool uses Kathará to emulate the IXP’s peering LAN, BGP sessions, and routing state from three inputs: a peering list, the live route‑server configuration (bird.conf or openbgpd.conf), and a RIB dump. The twin focuses on routing validation-filtering, prefix limits, and policy enforcement-while deliberately omitting full layer‑2 fabric emulation to keep the environment lightweight and fast. Operators can spin up the replica, verify routing behavior, and run quarantine checks without risking the live fabric.
  • Configuration mistakes at an IXP can have immediate impact. Building on the earlier IXP Digital Twin project, this article presents a new dashboard that enables operators to recreate production environments, validate routing state, and test member onboarding off production. Validating route server configurations and onboarding new customers at an Internet Exchange Point carries inherent risk. A misconfigured filter, an overlooked prefix limit, or an untested policy change can propagate across the fabric and affect dozens of networks in seconds. Yet most IXP operators still push changes directl

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