communication • … • Edge special characters • Edge node running in private network • connect to Cloud behind NAT • Edge node’s connect to Cloud through Internet • Low bandwidth/High latency • Unstable connectivity K8S Node2 KubeEdge VPN KubeBus • Scenario • Edge Nodes have no external IP and running behind NAT • One VM in Cloud Cluster has EIP • No direct connection between Edge nodes • Goal • Cloud VM and Edge