Method, apparatus and system for joint optimization

A computing apparatus for joint optimization, comprising:

• a processor;
• a nontransitory computer readable medium connected to the processor and having stored thereon instructions for causing the processor to:
• obtain 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, wherein each external port provides a connection between the sub-network and another sub-network providing the virtual server bandwidth through the respective external port, and wherein 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;
• obtain an optimal routing parameter and a server selection parameter for routing and sever selection within the sub-network according to the link information, the server and bandwidth information, and the user requirement information, and obtain optimized ingress bandwidth of every external port of the sub-network according to the optimal routing parameter and the server selection parameter;
• and
• compare 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, apply the optimal routing parameter and the server selection parameter in the sub-network, and output the optimal routing parameter and the server selection parameter.

A communication network, the network comprising a plurality of sub-networks connected through one or more external ports in each of the plurality of sub-networks, and each sub-network of the plurality of sub-networks configured to participate in joint optimization of the communication network and comprising:

• a processor;
• a nontransitory computer readable medium connected to the processor and having stored thereon instructions for causing the processor to:
• obtain link information, server and bandwidth information, and user requirement information of the sub-network, wherein the server and bandwidth information comprises virtual server bandwidth of every external port of the sub-network, wherein each external port provides a connection between the sub-network and another sub-network providing the virtual server bandwidth through the respective external port;
• compute an optimal routing parameter and a server selection parameter for routing and server selection within the sub-network according to the link information, the server and bandwidth information, and the user requirement information;
• obtain optimized ingress bandwidth of every external port of the sub-network:
• compare the optimized ingress bandwidth of every external port and the virtual server bandwidth of the external port:
• and
• apply the optimal routing parameter and the server selection parameter in the network if a comparison result is smaller than a set error value.

A system for joint optimization, comprising:

• a processor;
• a nontransitory computer readable medium connected to the processor and having stored thereon instructions for causing the processor to:
• gather link information, server and bandwidth information, and user requirement information;
• obtain a routing parameter and a server selection parameter for routing and server selection within the system;
• obtain optimized ingress bandwidth and optimized egress bandwidth of every external port of the system, wherein each external port of the system provides a connection between the system and a sub-network of a local network;
• and
• convert the routing parameter and the server selection parameter obtained by the computing apparatus for joint optimization into a routing parameter and a server selection parameter applied in the local network if the difference between the optimized ingress bandwidth of every external port and the smaller of the optimized egress bandwidth of the respective external port and available ingress bandwidth of the respective external port is smaller than a set error value.