企业级数据中心的网络虚拟化.pdf

Network Virtualization for the Enterprise Data Center Guido Appenzeller Open Networking Summit October 2011 THE ENTERPRISE DATA CENTER Major Trends change Enterprise Data Center Networking Trends in the Data Center New Networking Requirements Old News: Server Virtualization •  Example statistics (financial Institution): •  35% of servers virtualized ( 50% in 3 years) Network Virtualization •  60% of new installs are virtualized • Virtual networks to match •  Networking is now split across Hypervisor and virtual servers Physical switches •  Delegate administration for • Applications teams want control over their virtual networks virtualized infrastructure • APIs for integration with •  Trend towards private clouds: self-service provisioning systems provisioning of virtual servers and networks •  One control/management plane for hypervisor and physical switches Traffic Patterns change Bandwidth Demand •  Non-tree topologies (leaf/ •  Clustered workloads and multi-tier applications spine, Clos Networks) require much higher east-west bandwidth •  Broadcast domain isolation Scale changes •  Large organization are facing VLAN exhaustion and broadcast scaling issues