5、s学习 -HA SDN数据平面-DVRHost E Host C Host D Host A Host B Host A Host B Host A Host B DVR 物理网络 NFV without DVR VM A → B需要4跳 A → B 需要4跳 VM A → B需要4 * 4跳 跟物理网络一致 青云DVRVPCNetworkVPN/TunnelBaseNetworkInternetEdgeVRDVRwww GatewayClusterCompute Node LoadbalancerCluster