Virtual Server network access environment

In a private cloud environment, a complete set of virtual units encapsulated in a virtual application will be copied and called as needed. To ensure the independence of the topology and address of the replicated virtual unit, A large number of independent L2 Isolated network segments are required, and VLAN serving physical networks cannot meet the isolation requirements of large-scale Virtual Machine environments regardless of the number of extensions or the flexibility of a layer-3 network.

Therefore, led by Cisco and VMware, Alibaba Cloud combined with multiple vendors such as Arista, Broadcom, Citrix, and Redhat to submit VxLAN standards dedicated to virtual network environments to IETF.

VxLAN provides more independent network segments than 802.1QVLAN, and implements cross-layer extension through MACinUDP.

In addition, traditional network services such as routers, virtual machine firewalls, Wan acceleration, and Server Load balancer are deployed in a virtual network environment in a progressive manner, and vendor-specific technologies (such as CiscovPATH) are also provided) concatenates various types of intelligent services in an optimized path, and finally forms a pure virtual network layer on which resources can be freely scheduled in a virtualized computing environment and software-defined functions can be created. This is one of the implementation forms of SoftwareDefinedNetwork (SDN), a cutting-edge technology hotspot.

If the preceding virtualized network and smart service resources can be managed and scheduled together with the virtual computing resources and storage resources by automated management tools, a complete private cloud resource scheduling system can be formed.

Currently, the automation management tools that support new-generation Virtual technologies such as I/O integration, virtual machine awareness, and OverlaySDN include CiscoCloupia, CIAC, and vmwarevclouddire. these tools work together with the above end-to-end virtualization network technology, finally, a complete enterprise virtual server access network environment was built to lay the foundation for further implementation of IaaS cloud computing services.