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The New, QUIC Based Encrypted Protocol Stack Taking over the Internet and How to Deal with It - BRKSPM-2024#

Cisco Live Europe 2026 (Amsterdam) digest Program Core pick Amsterdam · 9–13 February 2026

Abstract

Andreas Enotiadis (Cisco), Bart Van de Velde (Cisco)

  • Why: QUIC + HTTP/3 + DoH + ECH is dismantling the visibility and traffic-management assumptions most network and security infrastructure was built on. The abstract cites QUIC at ~50% of total traffic, doubling every 18 months — a structural shift, not an SP niche topic.
  • What: How the QUIC-based encrypted stack is constructed and evolving, its behavior in terms of visibility and flow control, its impact on infrastructure elements, and the techniques providers can use to keep pace — traffic visibility, QoE monitoring/management, and efficient use of 5G spectrum (from abstract only).
  • How: Protocol-level decomposition: TLS 1.3 encryption removing application visibility, congestion management moving into the application, applications disintermediating the network.
  • Where applicable: Framed for service providers, but the visibility loss applies to any enterprise DC or security team doing traffic inspection, QoS, or telemetry on the wire.