• Routing Security

    Prefix filtering and validation in a Route Server infrastructure

    Route Servers (RS) are currently a critical piece of infrastructure in all the most important IXPs worldwide. This is especially true for those environments where a huge number of peers exists (often more than a hundred). The main role of RSes is to facilitate interconnection between multiple routers. They are a value-added service offered by IXPs and a quick shortcut to full operational status for new members. We could also describe the RS as an “enabling” service, a real “accelerator” of peering. It replaces the configuration of n bilateral peering sessions with a single BGP session by bringing several positive aspects: it allows to receive most of the IPv4 /…

  • Namex IRRHound
    Routing Security

    Hunting Routing Resources around the World

    Following the progressive exhaustion of IPv4 address space, we observed a parallel growth in commercial trading of available IPv4 addresses which led to a global redistribution of address blocks from their original “birthplace”. Such is the case of address blocks that had been originally allocated by a given Regional Internet Registry (RIR) – say ARIN, for example – but were then sold to a company that started to use and announce them in a completely different region – say RIPE. While this is perfectly fine and legitimate, it sometimes poses an additional burden on those subjects, namely Internet Exchange Points, that rely on information stored into Internet Routing Registries (IRR)…

  • Internet Exchanges

    “Switching” to IP fabrics

    At the beginning of 2021, Namex IXP has started the rollout of its next-generation peering platform, the active infrastructure which is at the core of its network interconnection facility. This new platform relies on an IP fabric design with VXLAN as the overlay network and BGP EVPN as the control plane protocol. The development of this project started back in March 2020 and saw Mellanox and Cumulus Networks (both parts of NVIDIA corporation now) as major technological partners. Before diving into the details, a brief historical note may help to understand the drivers and motivations behind such technical choices. Managing scale and complexity: the evolution of a peering platform Having…

  • Keep local traffic local
    Internet Exchanges

    Finalmente! Il traffico locale è rimasto locale.

    Durante la partita Juventus – Lazio del 6 marzo il traffico Internet locale è rimasto locale. In questo articolo Cristiano Zanforlin, Chief Commercial Officer MIX, Flavio Luciani, Chief Technology Officer Consorzio Namex e Luca Cicchelli, Interconnection Manager Consorzio TOP-IX spiegano cosa è successo e qual è il ruolo di un IXP. English Version has been published by Internet Society, read here the article Sabato, 6 Marzo 2021. La partita del Campionato Italiano di calcio di Serie A Juventus – Lazio viene trasmessa in TV sia via satellite sia via Internet, come accade ormai di consueto. Cos’è accaduto al traffico Internet in occasione di questo evento? Namex ha fatto il proprio all-time-peak, ovvero il picco record del traffico mostrato nel…