DC Fabric
Scale-out leaf-spine data center fabric with EVPN-VXLAN overlays. Multi-tenant workload isolation. BGP ECMP at every tier — on validated open hardware at a fraction of proprietary cost.
Proprietary switches own your hardware refresh cycle forever.
Every time you buy a Cisco or Arista switch, you're paying a hardware margin and a software license to the same vendor — with no ability to separate them. OcNOS-DC runs on the same Broadcom ASICs at ODM prices.
EVPN-VXLAN leaf-spine with BGP underlay anycast gateway ARP suppression EVPN multi-homing — production-ready, on Day 1, on open hardware.
EVPN-VXLAN Leaf-Spine — RFC 7938 + RFC 8365
eBGP unnumbered underlay on every leaf-spine link. VXLAN VTEP on every leaf. Anycast gateway eliminates first-hop routing latency. ZTP provisions every new switch at boot.
Hover nodes for capability and platform details · Full HCL: 40+ validated platforms at ipinfusion.com/hcl
EVPN-VXLAN done right — and automated from Day 0.
Most data center fabric deployments still rely on manual CLI provisioning that takes days per rack. OcNOS-DC combines the full EVPN-VXLAN feature set with ZTP, gNMI streaming telemetry, and Ansible automation — so you go from bare switch to production leaf in minutes.
EVPN Type-2 + Type-5 with Symmetric IRB
Type-2 routes advertise MAC and IP together so every leaf knows every host without flooding. Type-5 routes distribute IP prefixes for inter-tenant and external routing. Symmetric IRB gives you L3 forwarding on both ingress and egress VTEPs — optimal path, no hairpin.
EVPN Multi-Homing — active-active, no MLAG
Servers dual-homed to two leaf switches using ESI-LAG. Both links forward traffic simultaneously, with EVPN handling MAC/IP synchronization across VTEPs. No proprietary MLAG domain, no peer-link, no split-brain risk.
Distributed Anycast Gateway + ARP Suppression
Every leaf switch shares the same gateway IP and MAC for each tenant subnet — no traffic trombones through a central gateway. ARP suppression means leaf switches answer ARP locally from the EVPN database instead of flooding, reducing broadcast by 80–90% at scale.
ZTP + gNMI — zero-touch from rack to production
A new OcNOS-DC switch boots, DHCP provisions its full EVPN config via ZTP, and gNMI on-change telemetry begins streaming within minutes. No console cable, no manual eBGP configuration. Ansible and Terraform handle Day-2 changes idempotently across the entire fabric.
Validated DC Fabric Platforms
40+ validated platforms — view full HCL →
The same ASICs. A fraction of the cost.
Arista, Cisco, and Juniper data center switches run Broadcom Tomahawk and Trident ASICs — the same silicon inside Edgecore and UfiSpace ODM hardware. What you're paying extra for is the brand, the lock-in, and the vendor's margin.
❌ Proprietary (Arista / Cisco / Juniper)
Hardware and NOS bundled — you cannot buy the ASIC without the software license attached to it.
MLAG for server dual-homing requires a proprietary peer-link protocol and dedicated keepalive link per switch pair.
Automation uses vendor-specific EAPI, NX-API, or Junos PyEZ — not portable across platforms or vendors.
Separate hardware support and software support contracts — multiple TAC queues for the same network problem.
Forklift refresh every 3–5 years when the vendor EOLs the platform, whether or not the hardware has failed.
✓ OcNOS-DC on Open Hardware
Hardware from Edgecore or UfiSpace. OcNOS-DC from IP Infusion. Separate contracts — or bundled via a single Turnkey SKU.
EVPN Multi-Homing (ESI-LAG) delivers active-active server dual-homing natively — no peer-link, no proprietary protocol.
NETCONF/YANG 1.1, OpenConfig, gNMI, Ansible, Terraform — open standards that work on OcNOS-DC and every other standards-compliant NOS.
Single IP Infusion support contract covers software TAC and hardware RMA coordination globally, 24/7 — one call, one queue.
OcNOS-DC is software — upgrade the NOS independently of the hardware. Extend platform life beyond vendor EOL timelines.
Where OcNOS DC Fabric is deployed today.
Enterprise Multi-Tenant DC Fabric
Enterprise data centers hosting multiple business units or customers on shared infrastructure need strong tenant isolation without sacrificing east-west performance. OcNOS-DC delivers per-VRF isolation via L3 VNIs, anycast gateway for optimal intra-fabric routing, and ARP suppression to contain broadcast at scale — all on open hardware.
Cloud Provider / Hyperscale Fabric
Cloud providers and hyperscalers need automation-first operations where every switch is provisioned identically from a template, never manually. OcNOS-DC's ZTP, NETCONF/YANG, and Ansible-native design means new capacity is operational in minutes, not days. Docker and Kubernetes support in OcNOS 7.0 lets operators run on-switch monitoring agents alongside the NOS.
Mixed AI + General-Purpose Fabric
Many data centers run both GPU compute pods and conventional workloads. OcNOS-DC handles both in a single NOS instance — EVPN-VXLAN multi-tenant fabric for the conventional workloads and the full lossless RoCEv2 DCB stack (PFC, ECN, DLB) for GPU pods. No separate NOS for the AI section. For the DC-to-DC interconnect layer, see the IPoDWDM solution.
Resources for the DC fabric.
Architecture, SKUs, and deployment detail for OcNOS EVPN-VXLAN and AI fabrics.
EVPN-VXLAN Data Center Fabric
Leaf-spine fabric with symmetric IRB, Type-2/Type-5 routes, distributed anycast gateway — the same silicon as Arista/Cisco without the premium.
Download → Solution Brief · PDFNext-Generation DCI with IPoDWDM
Collapse IP and optical layers for data center interconnect: 400G ZR/ZR+ coherent optics, inter-DC EVPN, no external transponders.
Download → Solution Brief · PDF800G Lossless AI Fabric
RoCEv2 lossless Ethernet for GPU training and inference — PFC/ECN tuned on Tomahawk 4/5 spines.
Download →Build your leaf-spine fabric on open hardware.
Talk to an IPI DC networking specialist, or download the free OcNOS-DC VM and validate EVPN-VXLAN configurations today — no hardware required.
Complete the picture.
DC Fabric is the compute layer inside one site. AI Fabric handles the GPU cluster within it. IPoDWDM connects sites together.