How Cisco build AI readiness IP Backbone with 8000 Series - BRKMSI-3000#
Cisco Live US 2025 (San Diego) digest Program Core pick San Diego · 8–12 June 2025
Rob Piasecki (Cisco), Ruben Lopes da Fonte (Cisco)
- Why: Rare config-level treatment of lossless fabric mechanics — RoCEv2, PFC, ECN — including CLI verification, which is exactly the lossless-fabric internals the PM wants, not just architecture slideware.
- What: How Cisco builds AI infrastructure for webscalers: the requirements, the RoCEv2/PFC/ECN technology, detailed IOS-XR configuration, CLI verification that PFC and ECN are working, and design guidance (from abstract only — note the abstract itself is typo-laden, suggesting a hands-on rather than polished session).
- How: Step-by-step IOS-XR configuration of PFC and ECN with CLI validation, wrapped in design recommendations for AI-ready IP backbones.
- Where applicable: Platform-specific to Cisco 8000-series/IOS-XR, but the design principles (ECN threshold tuning, PFC behavior verification, lossless design patterns) transfer to any RoCEv2 fabric.