Constructing Virtual Private Network (VPN) over public network infrastructure (Internet) is becoming the foundation of the next generation network service. At present, VPN mainly focuses on the security property, whil...
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Constructing Virtual Private Network (VPN) over public network infrastructure (Internet) is becoming the foundation of the next generation network service. At present, VPN mainly focuses on the security property, while it is lack of consideration of QoS. On the basis of analyzing the Differentiated Services (Diffserv) and IPsec, we put forward a QoS-based IP VPN Architecture Model which is a tri-tier model that is composed of ESN, ISN and VPN node. It combines encrypted channel mechanism of IPsec and the edge-and-core-model of Diffserv. It provides end-to-end QoS while assures security.
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