VXLAN provides a methodology for creating a virtual tunnel on the IP network to transparently forward user data when communication is required between a source and destination node on the IP network. It is this concept that inspired the design of VXLAN. This meets the requirements for dynamic VM migration. When a server is migrated from one port of the Layer 2 switch to another port, the IP address of the server can remain unchanged. To enable smooth VM migration over a large scope or even between regions, all involved servers must be deployed in a large Layer 2 domain.Ī Layer 2 switch can support Layer 2 communication between servers connected to the switch. Traditional three-layer network architecture limiting the dynamic VM migration scope
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