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Bridging Islands: EVPN Overlays for Multi-Cluster KubeVirt#

KubeCon + CloudNativeCon Europe 2026 digest Program Core pick 23–26 March 2026

Abstract Recording

Miguel Duarte, Red Hat — Cloud Native Theater | KubeVirt Summit

Play the recording: Bridging Islands: EVPN Overlays for Multi-Cluster KubeVirt

  • Why: Real datacenter networking at a Kubernetes conference. BGP-EVPN, VXLAN and VRFs applied to the stretched-L2 problem, rather than another overlay reinvented in userspace.
  • What: An integration of OpenPERouter giving EVPN-based VXLAN overlays so Layer 2 stretches transparently between clusters, keeping VM MAC/IP consistent across migration and disaster recovery.
  • How: Declarative APIs over a dynamic BGP-EVPN control plane. Two consequences worth noting: deterministic cross-cluster live migration, and VRF-aware overlays that provide direct routed ingress to VMs — removing the need to expose ports through Kubernetes Services at all.
  • Where applicable: Multi-site KubeVirt estates, and legacy workloads that genuinely need broadcast/multicast. Assumes you can run BGP-EVPN between sites, so this is for operators who control the underlay — not a public-cloud pattern.