About the OpenShift SDN default CNI network provider - OpenShift SDN default CNI network provider | Networking | OpenShift Container Platform 4.4

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- OpenShift SDN default CNI network provider
- OVN-Kubernetes default CNI network provider
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Metering
- About metering
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Scalability and performance
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- Using the Node Tuning Operator
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Migration
- Migrating from OpenShift Container Platform 3
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CLI tools
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  - Getting started with Helm on OpenShift Container Platform
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API reference
- API list
- Common object reference
  - Index
- Authorization APIs
  - About Authorization APIs
  - LocalResourceAccessReview [authorization.openshift.io/v1]
  - LocalSubjectAccessReview [authorization.openshift.io/v1]
  - ResourceAccessReview [authorization.openshift.io/v1]
  - SelfSubjectRulesReview [authorization.openshift.io/v1]
  - SubjectAccessReview [authorization.openshift.io/v1]
  - SubjectRulesReview [authorization.openshift.io/v1]
  - TokenReview [authentication.k8s.io/v1]
  - LocalSubjectAccessReview [authorization.k8s.io/v1]
  - SelfSubjectAccessReview [authorization.k8s.io/v1]
  - SelfSubjectRulesReview [authorization.k8s.io/v1]
  - SubjectAccessReview [authorization.k8s.io/v1]
- Autoscale APIs
  - About Autoscale APIs
  - ClusterAutoscaler [autoscaling.openshift.io/v1]
  - MachineAutoscaler [autoscaling.openshift.io/v1beta1]
  - HorizontalPodAutoscaler [autoscaling/v1]
- Config APIs
  - About Config APIs
  - APIServer [config.openshift.io/v1]
  - Authentication [config.openshift.io/v1]
  - Build [config.openshift.io/v1]
  - ClusterOperator [config.openshift.io/v1]
  - ClusterVersion [config.openshift.io/v1]
  - Console [config.openshift.io/v1]
  - DNS [config.openshift.io/v1]
  - FeatureGate [config.openshift.io/v1]
  - Image [config.openshift.io/v1]
  - Infrastructure [config.openshift.io/v1]
  - Ingress [config.openshift.io/v1]
  - Network [config.openshift.io/v1]
  - OAuth [config.openshift.io/v1]
  - OperatorHub [config.openshift.io/v1]
  - Project [config.openshift.io/v1]
  - Proxy [config.openshift.io/v1]
  - Scheduler [config.openshift.io/v1]
- Console APIs
  - About Console APIs
  - ConsoleCLIDownload [console.openshift.io/v1]
  - ConsoleExternalLogLink [console.openshift.io/v1]
  - ConsoleLink [console.openshift.io/v1]
  - ConsoleNotification [console.openshift.io/v1]
  - ConsoleYAMLSample [console.openshift.io/v1]
- Extension APIs
  - About Extension APIs
  - APIService [apiregistration.k8s.io/v1]
  - CustomResourceDefinition [apiextensions.k8s.io/v1]
  - MutatingWebhookConfiguration [admissionregistration.k8s.io/v1]
  - ValidatingWebhookConfiguration [admissionregistration.k8s.io/v1]
- Image APIs
  - About Image APIs
  - Image [image.openshift.io/v1]
  - ImageSignature [image.openshift.io/v1]
  - ImageStreamImage [image.openshift.io/v1]
  - ImageStreamImport [image.openshift.io/v1]
  - ImageStreamMapping [image.openshift.io/v1]
  - ImageStream [image.openshift.io/v1]
  - ImageStreamTag [image.openshift.io/v1]
  - ImageTag [image.openshift.io/v1]
- Machine APIs
  - About Machine APIs
  - ContainerRuntimeConfig [machineconfiguration.openshift.io/v1]
  - ControllerConfig [machineconfiguration.openshift.io/v1]
  - KubeletConfig [machineconfiguration.openshift.io/v1]
  - MachineConfigPool [machineconfiguration.openshift.io/v1]
  - MachineConfig [machineconfiguration.openshift.io/v1]
  - MachineHealthCheck [machine.openshift.io/v1beta1]
  - Machine [machine.openshift.io/v1beta1]
  - MachineSet [machine.openshift.io/v1beta1]
- Metadata APIs
  - About Metadata APIs
  - Binding [core/v1]
  - ComponentStatus [core/v1]
  - ConfigMap [core/v1]
  - ControllerRevision [apps/v1]
  - Event [events.k8s.io/v1beta1]
  - Event [core/v1]
  - Lease [coordination.k8s.io/v1]
  - Namespace [core/v1]
- Monitoring APIs
  - About Monitoring APIs
  - Alertmanager [monitoring.coreos.com/v1]
  - PodMonitor [monitoring.coreos.com/v1]
  - Prometheus [monitoring.coreos.com/v1]
  - PrometheusRule [monitoring.coreos.com/v1]
  - ServiceMonitor [monitoring.coreos.com/v1]
- Network APIs
  - About Network APIs
  - ClusterNetwork [network.openshift.io/v1]
  - Endpoints [core/v1]
  - EndpointSlice [discovery.k8s.io/v1beta1]
  - EgressNetworkPolicy [network.openshift.io/v1]
  - HostSubnet [network.openshift.io/v1]
  - Ingress [networking.k8s.io/v1beta1]
  - NetNamespace [network.openshift.io/v1]
  - NetworkAttachmentDefinition [k8s.cni.cncf.io/v1]
  - NetworkPolicy [networking.k8s.io/v1]
  - Route [route.openshift.io/v1]
  - Service [core/v1]
- Node APIs
  - About Node APIs
  - Node [core/v1]
  - Profile [tuned.openshift.io/v1]
  - RuntimeClass [node.k8s.io/v1beta1]
  - Tuned [tuned.openshift.io/v1]
- OAuth APIs
  - About OAuth APIs
  - OAuthAccessToken [oauth.openshift.io/v1]
  - OAuthAuthorizeToken [oauth.openshift.io/v1]
  - OAuthClientAuthorization [oauth.openshift.io/v1]
  - OAuthClient [oauth.openshift.io/v1]
- Operator APIs
  - About Operator APIs
  - Authentication [operator.openshift.io/v1]
  - Console [operator.openshift.io/v1]
  - Config [imageregistry.operator.openshift.io/v1]
  - Config [samples.operator.openshift.io/v1]
  - CSISnapshotController [operator.openshift.io/v1]
  - DNS [operator.openshift.io/v1]
  - DNSRecord [ingress.operator.openshift.io/v1]
  - Etcd [operator.openshift.io/v1]
  - ImageContentSourcePolicy [operator.openshift.io/v1alpha1]
  - ImagePruner [imageregistry.operator.openshift.io/v1]
  - IngressController [operator.openshift.io/v1]
  - KubeAPIServer [operator.openshift.io/v1]
  - KubeControllerManager [operator.openshift.io/v1]
  - KubeScheduler [operator.openshift.io/v1]
  - KubeStorageVersionMigrator [operator.openshift.io/v1]
  - Network [operator.openshift.io/v1]
  - OpenShiftAPIServer [operator.openshift.io/v1]
  - OpenShiftControllerManager [operator.openshift.io/v1]
  - ServiceCA [operator.openshift.io/v1]
  - ServiceCatalogAPIServer [operator.openshift.io/v1]
  - ServiceCatalogControllerManager [operator.openshift.io/v1]
- OperatorHub APIs
  - About OperatorHub APIs
  - CatalogSourceConfig [operators.coreos.com/v1]
  - CatalogSource [operators.coreos.com/v1alpha1]
  - ClusterServiceVersion [operators.coreos.com/v1alpha1]
  - InstallPlan [operators.coreos.com/v1alpha1]
  - OperatorGroup [operators.coreos.com/v1]
  - OperatorSource [operators.coreos.com/v1]
  - PackageManifest [packages.operators.coreos.com/v1]
  - Subscription [operators.coreos.com/v1alpha1]
- Policy APIs
  - About Policy APIs
  - PodDisruptionBudget [policy/v1beta1]
- Project APIs
  - About Project APIs
  - Project [project.openshift.io/v1]
  - ProjectRequest [project.openshift.io/v1]
- RBAC APIs
  - About RBAC APIs
  - ClusterRoleBinding [rbac.authorization.k8s.io/v1]
  - ClusterRole [rbac.authorization.k8s.io/v1]
  - RoleBinding [rbac.authorization.k8s.io/v1]
  - Role [rbac.authorization.k8s.io/v1]
- Role APIs
  - About Role APIs
  - ClusterRoleBinding [authorization.openshift.io/v1]
  - ClusterRole [authorization.openshift.io/v1]
  - RoleBindingRestriction [authorization.openshift.io/v1]
  - RoleBinding [authorization.openshift.io/v1]
  - Role [authorization.openshift.io/v1]
- Schedule and quota APIs
  - About Schedule and quota APIs
  - AppliedClusterResourceQuota [quota.openshift.io/v1]
  - ClusterResourceQuota [quota.openshift.io/v1]
  - LimitRange [core/v1]
  - PriorityClass [scheduling.k8s.io/v1]
  - ResourceQuota [core/v1]
- Security APIs
  - About Security APIs
  - CertificateSigningRequest [certificates.k8s.io/v1beta1]
  - CredentialsRequest [cloudcredential.openshift.io/v1]
  - PodSecurityPolicyReview [security.openshift.io/v1]
  - PodSecurityPolicySelfSubjectReview [security.openshift.io/v1]
  - PodSecurityPolicySubjectReview [security.openshift.io/v1]
  - RangeAllocation [security.openshift.io/v1]
  - Secret [core/v1]
  - SecurityContextConstraints [security.openshift.io/v1]
  - ServiceAccount [core/v1]
- Storage APIs
  - About Storage APIs
  - CSIDriver [storage.k8s.io/v1beta1]
  - CSINode [storage.k8s.io/v1]
  - PersistentVolumeClaim [core/v1]
  - StorageClass [storage.k8s.io/v1]
  - VolumeAttachment [storage.k8s.io/v1]
  - VolumeSnapshot [snapshot.storage.k8s.io/v1beta1]
  - VolumeSnapshotClass [snapshot.storage.k8s.io/v1beta1]
  - VolumeSnapshotContent [snapshot.storage.k8s.io/v1beta1]
- Template APIs
  - About Template APIs
  - BrokerTemplateInstance [template.openshift.io/v1]
  - PodTemplate [core/v1]
  - Template [template.openshift.io/v1]
  - TemplateInstance [template.openshift.io/v1]
- User and group APIs
  - About User and group APIs
  - Group [user.openshift.io/v1]
  - Identity [user.openshift.io/v1]
  - UserIdentityMapping [user.openshift.io/v1]
  - User [user.openshift.io/v1]
- Workloads APIs
  - About Workloads APIs
  - BuildConfig [build.openshift.io/v1]
  - Build [build.openshift.io/v1]
  - CronJob [batch/v1beta1]
  - DaemonSet [apps/v1]
  - Deployment [apps/v1]
  - DeploymentConfig [apps.openshift.io/v1]
  - Job [batch/v1]
  - Pod [core/v1]
  - ReplicationController [core/v1]
  - PersistentVolume [core/v1]
  - ReplicaSet [apps/v1]
  - StatefulSet [apps/v1]
Service Mesh
- Service Mesh 1.x
Jaeger
- Jaeger release notes
- Jaeger architecture
  - Jaeger architecture
- Jaeger installation
Container-native virtualization
- About container-native virtualization
- Container-native virtualization release notes
  - Container-native virtualization release notes
- Container-native virtualization installation
- Upgrading container-native virtualization
- Using the CLI tools
- Virtual machines
- Virtual machine templates
- Live migration
- Node maintenance
- Node networking
- Logging, events, and monitoring
Serverless applications
- Release Notes
- Support
- Architecture
  - Knative Serving
  - Knative Eventing
- Getting started
- Installing OpenShift Serverless
- Creating and managing serverless applications
- High availability on OpenShift Serverless
- Tracing requests
- Knative Serving
- Knative Eventing
- Event sources
- Using metering with OpenShift Serverless

Supported default CNI network provider feature matrix

OpenShift Container Platform uses a software-defined networking (SDN) approach to provide a unified cluster network that enables communication between pods across the OpenShift Container Platform cluster. This pod network is established and maintained by the OpenShift SDN, which configures an overlay network using Open vSwitch (OVS).

OpenShift SDN provides three SDN modes for configuring the pod network:

The network policy mode allows project administrators to configure their own isolation policies using NetworkPolicy objects. Network policy is the default mode in OpenShift Container Platform 4.4.
The multitenant mode provides project-level isolation for pods and services. pods from different projects cannot send packets to or receive packets from pods and services of a different project. You can disable isolation for a project, allowing it to send network traffic to all pods and services in the entire cluster and receive network traffic from those pods and services.
The subnet mode provides a flat pod network where every pod can communicate with every other pod and service. The network policy mode provides the same functionality as the subnet mode.

Supported default CNI network provider feature matrix

OpenShift Container Platform offers two supported choices, OpenShift SDN and OVN-Kubernetes, for the default Container Network Interface (CNI) network provider. The following table summarizes the current feature support for both network providers:

Table 1. Default CNI network provider feature comparison
Feature	OpenShift SDN	OVN-Kubernetes ^[1]
Egress IPs	Supported	Not supported
Egress firewall ^[2]	Supported	Not supported
Egress router	Supported	Not supported
Kubernetes network policy	Partially supported ^[3]	Supported
Multicast	Supported	Supported

Available only as a Technology Preview feature in OpenShift Container Platform 4.4.
Egress firewall is also known as egress network policy in OpenShift SDN. This is not the same as network policy egress.
Does not support egress rules and some ipBlock rules.