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7.0 GA

OcNOS-DC
Data Center NOS

Open network OS for leaf-spine DC fabric. EVPN-VXLAN overlays, lossless RoCEv2 for AI GPU clusters, ZTP automation, and streaming telemetry on validated Broadcom open hardware.

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dc-spine01 · OcNOS-DC
$show bgp evpn summary
BGP EVPN · AS 65001
Neighbor State Pfx
10.0.0.11 Estab 342
10.0.0.12 Estab 342
10.0.0.13 Estab 341
10.0.0.14 Estab 341
$show pfc counters et-0/0/1
Priority 3 RoCEv2
Drop count 0
Status ✓ lossless
$show ztp status
State ✓ Complete
Fabric ✓ EVPN joined
$
Architecture Briefs

Take it offline. Read it on a plane.

The production datasheet and the EVPN-VxLAN reference architecture: short PDFs to share with the team.

Datasheet

OcNOS 7.0 Data Center Datasheet

Full feature list, SKU tiers, supported platforms, and licensing for OcNOS-DC: the production reference document.

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Solution Brief

Modernize Your Data Center with EVPN-VxLAN

Leaf-spine reference architecture: symmetric IRB, Type-2 / Type-5 routes, distributed anycast gateway, the same fabric as Arista/Cisco on open hardware.

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Who Deploys OcNOS-DC

Built for the teams running AI, enterprise, and cloud fabrics.

From GPU-cluster spines to multi-tenant leaf: one NOS, three SKUs, validated open hardware.

AI & GPU Cluster Operators

Lossless east-west fabric for RDMA workloads.

"GPU-to-GPU training can't tolerate a single dropped packet. One drop stalls the entire job."

Pre-tuned PFC & ECN for RoCEv2 on Tomahawk 4/5 spines (25.6T–51.2T). EVPN-VXLAN overlay, ZTP, gNMI telemetry: the same lossless Ethernet hyperscalers run.

DC-PLUS · TH4 / TH5
Enterprise Data Center

EVPN-VXLAN leaf-spine without the proprietary tax.

"Same Broadcom silicon as Arista EOS and Cisco Nexus, paying the vendor premium for it."

Symmetric IRB, Type-2/Type-5 routes, distributed anycast gateway, ARP suppression on Trident & Tomahawk platforms. BGP underlay with ECMP at every tier.

DC-IPBASE · TD3 – TH3
Cloud & Multi-Tenant Operators

Hundreds of tenant VNIs, one fabric.

"Separate hardware per tenant doesn't scale. Neither do vendor-specific automation ecosystems."

Per-tenant VRF isolation, VXLAN encapsulation, Linux-based Docker-on-switch. NETCONF/YANG, gNMI, Ansible: open APIs, portable automation.

DC-IPBASE / DC-PLUS
Full Feature Matrix Qualified Hardware Documentation
Why OcNOS-DC

Open economics. AI-grade performance.

AI & GPU Clusters

Lossless RoCEv2: Zero Packet Loss GPU-to-GPU Fabric

PFC and ECN pre-configured for RDMA workloads. OcNOS-DC on TH4/TH5 platforms delivers the same lossless Ethernet that hyperscalers run in production AI clusters, without the Cisco or NVIDIA price tag.

PFC Priority 3 ECN WRED RoCEv2 RDMA 0 Drop
AI Fabric Solution
Overlay Fabric

EVPN-VXLAN: Production Leaf-Spine from Day 1

Symmetric IRB, distributed anycast gateway, ARP suppression, and Type-5 routes. ZTP ensures every new leaf joins the fabric automatically with zero CLI work.

Telemetry

Real-Time gNMI Streaming

Buffer utilisation, PFC pause counters, and congestion events streamed in real time. OpenConfig YANG models for vendor-neutral integration.

Day 0 Automation

ZTP: Rack Ships. Fabric Joins.

DHCP-based Zero Touch Provisioning onboards every new leaf and spine automatically. GPU cluster racks commissioned without a single SSH session.

One Accountable Vendor

Single Support Contract: Software + Hardware + RMA

One SLA across OcNOS, the validated Edgecore or UfiSpace platform, and RMA logistics. No multi-vendor finger-pointing when a switch fails at 3 a.m.

Architecture

OcNOS-DC Leaf-Spine Topology

From GPU cluster ToR switches through leaf-spine fabric to DCI: one NOS, one vendor, one support contract.

OcNOS-DC leaf-spine topology: GPU server racks into ToR leaves running lossless RoCEv2, uplinked to spines, with DCI extending to a remote data center
OcNOS-DC: GPU racks into RoCEv2 leaves, spine uplinks, and DCI to a remote data center.
Choose Your OcNOS-DC

SKU & platform comparison

OcNOS-DC ships in three editions. All include unified IPI support for both software and hardware.

OcNOS-DC: Data Center Switches DC-MGMT DC-IPBASE DC-PLUS
Layer 2 / Layer 3•••
EVPN-VXLAN••
Ethernet for AI (RoCEv2 / PFC / ECN)••
Streaming Telemetry (gNMI/gRPC)•
400G ZR/ZR+ Coherent Optics (DCI)•
Qualified Platforms
ASICCapacityPort Speed DC-MGMT DC-IPBASE DC-PLUS
TD3-X2128G1/10G••
TD3-X52,000G10/25/100G••
TD3-X73,200G10/25/100G••
TH26,400G100G••
TH312,800G400G••
TD412,800G400G••
TH425,600G400G••
TH551,200G800G••

*Feature support is platform-dependent. Refer to the Feature Matrix for details. 18 qualified DC platforms available.

Complete DC stack in every SKU
EVPN-VXLANSymmetric IRBBGP ECMP RoCEv2PFCECN WRED RDMAZTPgNMI/gRPC OpenConfigNETCONF/YANGAnsible 400G ZR+Docker on-switchRESTCONF
Test Drive Free Qualified Platforms Interactive Feature Matrix
How We Compare

OcNOS-DC vs. Arista EOS / Cisco Nexus / NVIDIA Spectrum-X

Same Broadcom silicon. Open hardware. No proprietary tax on AI networking.

✕   Proprietary DC Switching (Arista / Cisco / NVIDIA)
Proprietary NOS on proprietary hardware: vendor lock-in at every refresh
AI fabric features (RoCEv2, PFC tuning) require premium SKU or add-on license
Vendor-specific automation ecosystems: limited portability across platforms and generations
Substantial hardware premium vs equivalent Broadcom silicon on open ODM platforms
License renewals and refresh cycles tied to vendor hardware cadence
✓   OcNOS-DC on Open Hardware
Open NOS on Edgecore / UfiSpace open hardware: multi-vendor HW choice
Full RoCEv2 lossless AI fabric included in DC-IPBASE: no add-ons
Linux-based, open APIs: Ansible, NETCONF/YANG, gNMI, RESTCONF, Docker on-switch
Same Broadcom TH5 silicon: substantially lower total cost of ownership
Single IPI support contract covers OcNOS-DC software and validated hardware

Also an alternative to DIY SONiC deployments. OcNOS-DC is a commercial NOS with 24/7 TAC, single-vendor SLA, and RMA logistics. SONiC is open-source and requires internal integration, hardware validation, and third-party support: engineering overhead IP Infusion absorbs.

OcNOS-DC in production

Cloud, hyperscale, and AI fabric operators running OcNOS-DC on validated Broadcom open hardware.

NTT
APAC

NTT DATA partnered with IP Infusion to take disaggregated open networking solutions to market, offering OcNOS-powered Cell Site Routers, Routed…

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Scott Data
Americas

Scott Data deployed OcNOS with open networking hardware from UfiSpace, Edgecore Networks, and Celestica, replacing legacy vendor stacks across its…

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Madeo
EMEAI

Madeo Consultant, a France-based data center systems integrator, replaced Cisco Nexus and Catalyst switches with IP Infusion OcNOS on Edgecore…

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Prosoluce
EMEAI

Prosoluce, a French ISP and managed services provider, upgraded its core to a 100G EVPN-VXLAN backbone running IP Infusion OcNOS…

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Browse all customer deployments →

Ready to deploy OcNOS-DC?

Book a technical demo, or try it free in our cloud lab — no hardware required.

Book Technical Demo Download OcNOS VM →
FAQ

OcNOS-DC: frequently asked questions

What is OcNOS-DC and what is it used for?
OcNOS-DC is IP Infusion's data center variant of OcNOS, the network operating system in production with 600+ operators across 60+ countries. It is built for leaf-and-spine fabrics that carry EVPN-VXLAN overlays, lossless RoCEv2 traffic for AI and ML clusters, and 400G or 800G DCI links. The OS runs on disaggregated Broadcom-based switches from Edgecore and UfiSpace, giving operators a commercial alternative to Arista EOS, Cisco Nexus, and DIY SONiC builds.
Which EVPN-VXLAN features does OcNOS-DC support?
OcNOS-DC implements EVPN-VXLAN with both Type-2 MAC/IP and Type-5 IP-prefix routes, symmetric IRB, distributed anycast gateway, and ARP suppression. EVPN multi-homing with all-active ESI LAG replaces legacy MLAG for dual-homed servers and storage. The control plane uses MP-BGP per RFC 7432 and RFC 8365, so it interoperates with mainstream EVPN implementations from other vendors.
How does OcNOS-DC build a lossless RoCEv2 fabric for AI workloads?
OcNOS-DC ships with Priority Flow Control (PFC) and Explicit Congestion Notification (ECN) profiles pre-tuned for RoCEv2, so RDMA traffic classes can be paused on a per-priority basis to avoid GPU-to-GPU packet drops. The intent is a zero packet loss fabric for xCCL collectives such as NCCL and RCCL. Real production deployments to date have run on the order of 20 to 200 GPUs, and the design scales further as engagements grow.
What are the OcNOS-DC license tiers?
OcNOS-DC is offered in three SKUs. DC-MGMT provides Layer 2 and Layer 3 features for out-of-band management switches. DC-IPBASE adds EVPN-VXLAN overlay and lossless Ethernet for AI fabrics, and DC-PLUS extends that with streaming telemetry and 400G ZR/ZR+ coherent optics for data center interconnect.
Which switches and Broadcom silicon does OcNOS-DC run on?
OcNOS-DC supports 18 open hardware platforms from Edgecore and UfiSpace, spanning 48x25G ToR leaves up to 64x800G spines. Supported Broadcom silicon includes Tomahawk 5 (51.2T, 800G), Tomahawk 4 (25.6T, 400G), Tomahawk 3, Trident 4, and Trident 3. The same NOS image runs across the portfolio, so operators can standardize one CLI and one automation toolchain across leaf, spine, and border roles.
How does OcNOS-DC handle automation and zero-touch provisioning?
OcNOS-DC exposes NETCONF, RESTCONF, and gNMI/gRPC northbound, with OpenConfig and native YANG models, so it slots into existing Ansible, Terraform, or in-house controller pipelines. Zero Touch Provisioning uses DHCP options 66/67 to fetch the image and day-zero config, which lets a new leaf or spine join the fabric without console access. Streaming telemetry is available in the DC-PLUS tier for closed-loop assurance.
Keep Exploring

Where OcNOS-DC fits next

Solution DC Fabric EVPN-VXLAN leaf-spine architecture and DCI. Solution AI Fabric Lossless RoCEv2 for GPU cluster training and inference. Capability Automation & APIs Ansible, NETCONF/YANG, gNMI streaming, ZTP, Docker on-switch.