Antrea
Antrea: A broad open-source CNI for Kubernetes connectivity, security, and observability. Ranked #15 of 24 in Software-Defined Networking Software by our editors (7.5/10); pricing: Open source; best for open-source Kubernetes networking.
At a glance
- Editor score7.5 / 10
- PricingOpen source
- Best forOpen-source Kubernetes networking
- Paid fromFree
- Deployment modelHybrid
- Facts checked20 Sep 2026
Where it wins
- Free open-source CNI with Kubernetes NetworkPolicy enforcement
- Encryption, overlays, multi-cluster services, and policy segmentation
- Traceflow, flow visibility, Prometheus, and Grafana integrations
Where it doesn't
- Focused on Kubernetes cluster networking rather than general SDN use cases
- Self-hosted operation requires managing the networking deployment
- Advanced capabilities may add operational complexity for smaller clusters
Our verdict on Antrea
Antrea is an open-source Kubernetes networking solution for teams that need pod connectivity, network policy enforcement, and visibility across Linux or Windows Kubernetes nodes. It implements the Container Network Interface and uses Open vSwitch as its data plane. The project supports public and private clouds as well as bare-metal infrastructure, making it suited to Kubernetes environments with varied deployment models. Its centralized control plane, hybrid deployment model, policy segmentation, and northbound API support give it a defined software-defined networking profile.
Antrea’s open-source model avoids vendor-priced plan tiers, while its published capabilities cover the core networking stack. Overlay options include VXLAN, Geneve, GRE, and STT, and traffic encryption is available through IPsec and WireGuard. Advanced policy tiers, priorities, and cluster policies extend Kubernetes NetworkPolicy enforcement. Multi-cluster networking and services add scope beyond a single cluster. Integrations with Kubernetes, Open vSwitch, Prometheus, Grafana, Elastic Stack, Kibana, Multus, Fluentd, Theia, and Nephe support a broad ecosystem around networking, metrics, logging, and visualization.
The standout area is the combination of policy control and troubleshooting visibility. Traceflow, packet inspection, and network-flow visibility are paired with Prometheus metrics export, while support for BGP and IPFIX expands its protocol coverage. Linux and Windows node support also helps mixed-node Kubernetes deployments. Antrea is a strong fit for organizations seeking open-source Kubernetes networking with encryption, multi-cluster services, and observability in one project. Teams seeking a general-purpose SDN product outside Kubernetes, or preferring a vendor-priced managed service, should consider a narrower or commercially managed alternative instead.
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Antrea pricing
Antrea fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Deployment model | Hybrid |
| Control-plane model | Centralized |
| Policy segmentation | Yes |
| Northbound API | Yes |
| Supported protocols | VXLAN, Geneve, STT, GRE, IPsec, WireGuard, BGP, IPFIX |
| Managed device limit | Not verified |
| Deployment | Cloud, Self-hosted |
| Platforms | Linux, Windows |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 10 integrations: Kubernetes, Open vSwitch, Prometheus, Grafana, Elastic Stack, Kibana … |
| Pricing | Open source |
| Website | antrea.io |
| Facts checked | 20 Sep 2026 |
Antrea integrations
Antrea lists 10 integrations on its own site.
- Kubernetes
- Open vSwitch
- Prometheus
- Grafana
- Elastic Stack
- Kibana
- Multus
- Fluentd
- Theia
- Nephe
Alternatives to Antrea
- VMware NSXA broad hybrid-cloud networking and security platform with contact-sales pricing.9.3
- Cisco Nexus Dashboard Fabric ControllerA focused controller for provisioning, automating, and governing VXLAN EVPN fabrics.9.1
- Cisco Catalyst CenterA broad Cisco network-operations platform for discovery, automation, compliance, and assurance.9.0
Also Ranked In
Antrea is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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