Get the benefits of a non-profit local/sub-regional IX#

Janos Gergely & Janos Angeli, BIX

• Why: Sold as an IXP promo, but the slides double as a disclosed reference design of a multi-city EVPN peering backbone — the technical content is the reason to read it.
• What: BIX Budapest's fabric: VXLAN-based L2 peering LAN over an OSPF L3 underlay with a BGP EVPN control plane (spines as route reflectors), Bird v3 route servers, RPKI + IRRDB prefix filtering. Physical plant: Nokia 7750 SR / 7220 IXR and Arista 7280R nodes, Budapest dark-fiber rings (7–28 km IRU links), three 400G Budapest–Vienna wavelengths (3.4–6.3 ms) and 400G Budapest–Frankfurt wavelengths; the 2026 refresh moves spines to 32x800G-capable Nokia 7220 IXR. Commercial model: free peering up to 2G, MRC-free cross-connects, hybrid ports/PNI/MMR, subspeed ports (1/10G, 40/100G) billed at 95^th percentile.
• How: Standard EVPN fabric + Bird route servers; a small, fully documented multi-PoP IXP architecture.
• Where applicable: BIX-specific (Budapest/Vienna/Frankfurt topology and pricing), but the EVPN-plus-route-server design is broadly reproducible by any small regional exchange or operator building a similar fabric.