Patent Document ID: 20130117443
Application ID: 13721530
Patent Flag: 0

Claim One:
1. A method for joint optimization in a network, wherein the network comprises a plurality of sub-networks, the method comprising: obtaining link information, server and bandwidth information, and user requirement information of a sub-network, wherein the server and bandwidth information comprises virtual server bandwidth of every external port of the sub-network, and the virtual server bandwidth is bandwidth of a server off the sub-network, wherein the bandwidth of the server off the sub-network is required by the sub-network through the external port; obtaining an optimal routing parameter and a server selection parameter of the sub-network according to the link information, the server and bandwidth information, and the user requirement information; obtaining optimized ingress bandwidth of every external port of the sub-network according to the optimal routing parameter and the server selection parameter; and comparing the optimized ingress bandwidth and the virtual server bandwidth of every external port, and if results of the comparison between the optimized ingress bandwidth and the virtual server bandwidth of all external ports are smaller than a set error value, applying the optimal routing parameter and the server selection parameter in the sub-network.