Networking

Active-Active Multi-Site Data Center (DCI)

Network Design diagram · made in Skemio

Data center network diagram featuring WAN edge, site border routers, spine and leaf switches connected to active-active compute server clusters across two sites.
Data center network diagram featuring WAN edge, site border routers, spine and leaf switches connected to active-active compute server clusters across two sites.
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What it shows

  • EVPN-VXLAN extends layer 2 over layer 3 without spanning tree loop risks
  • Anycast default gateways allow zero-downtime VM migration across sites
  • Routed BGP interconnects keep local broadcast failures strictly contained

The takeaway

Never stretch raw layer 2 across sites; isolate failure domains with EVPN-VXLAN over routed links.

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