Added a new section on Azure CNI (#17830)

* Added a new section on Azure CNI

Azure provides a CNI for native integration of Kubernetes Pods in a Virtual Network. I have added a short description of this CNI and provided links to important documentation

* Update networking.md

* Made updates based on comments

This is much closer to what you are recommending. Please take a look
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Aanand Ramachandran 2020-01-18 08:39:35 -08:00 committed by Kubernetes Prow Robot
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@ -111,6 +111,12 @@ Using this CNI plugin allows Kubernetes pods to have the same IP address inside
Additionally, the CNI can be run alongside [Calico for network policy enforcement](https://docs.aws.amazon.com/eks/latest/userguide/calico.html). The AWS VPC CNI project is open source with [documentation on GitHub](https://github.com/aws/amazon-vpc-cni-k8s).
### Azure CNI for Kubernetes
[Azure CNI](https://docs.microsoft.com/en-us/azure/virtual-network/container-networking-overview) is an [open source](https://github.com/Azure/azure-container-networking/blob/master/docs/cni.md) plugin that integrates Kubernetes Pods with an Azure Virtual Network (also known as VNet) providing network performance at par with VMs. Pods can connect to peered VNet and to on-premises over Express Route or site-to-site VPN and are also directly reachable from these networks. Pods can access Azure services, such as storage and SQL, that are protected by Service Endpoints or Private Link. You can use VNet security policies and routing to filter Pod traffic. The plugin assigns VNet IPs to Pods by utilizing a pool of secondary IPs pre-configured on the Network Interface of a Kubernetes node.
Azure CNI is available natively in the [Azure Kubernetes Service (AKS)] (https://docs.microsoft.com/en-us/azure/aks/configure-azure-cni).
### Big Cloud Fabric from Big Switch Networks
[Big Cloud Fabric](https://www.bigswitch.com/container-network-automation) is a cloud native networking architecture, designed to run Kubernetes in private cloud/on-premises environments. Using unified physical & virtual SDN, Big Cloud Fabric tackles inherent container networking problems such as load balancing, visibility, troubleshooting, security policies & container traffic monitoring.