基于多商品流模型的虚拟链路映射

网络虚拟化是解决网络僵化问题和更好地共享底层网络资源的一种有效途径，虚拟网络映射是实施网络虚拟化的关键问题之～。虚拟网络映射包括节点映射和链路映射两个方面，其目标是为虚拟网络请求分配合适的底层网络节点和链路资源。阐述了底层网络支持路径分割时，如何基于多商品流模型实现VN链路映射。

Virtual Link Mapping based on Multi -commodity Flow

Network virtualization is effective to solve the network Ossified and share the physical network infrastructures. Virtual network embedding is one of the key problems of network virtualization, which includes node mapping and link map- ping and its target is to allocate appropriate underlying network resources to virtual nodes and virtual links. The paper elab- orates how to implement virtual network embedding based on multi - commodity flow when the underlying network supports paths split.