How we integrated L3 services into one of the biggest OpenStack Public Clouds - OVHcloud case study
summary
OVHcloud integrates distributed virtual routers, floating IPs and external gateways into a massive OpenStack deployment running 4,100 instances across 30+ regions by adding separate Neutron plugins: a Quagga BGP agent that announces directly connected IPs and external gateways, a Vrack VLAN-in-VLAN agent for L2 packing/unpacking, and L3/DVR namespaces wired into S‑NAT nodes. Kernel default-route behavior and metadata timing require patches, duplicate multi‑region routes and VRRP flapping remain under mitigation; the feature set is in beta and targeted for GA with Octavia next.
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chapters (6)
- 0:00Introduction to cloud scale
- 1:26Networking architecture
- 6:20Implementing L3 services
- 16:08Infrastructure challenges
- 25:47Future roadmap and conclusion
- 27:16Q&A session
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