Supporting software defined networking with application layer traffic optimization

摘要

A network node for managing the control plane functions for a plurality of nodes within a software defined networking (SDN) domain, comprising a processor configured to collect a plurality of network information from the nodes, forward the network information based on a plurality of domain-specific policies, receive traffic optimization information based on the network information, and compute forwarding decisions for the nodes based on the traffic optimization information. In another embodiment, an Application Layer Traffic Optimization (ALTO) node, comprising a processor configured to import a first set of network information from one or more SDN nodes, aggregate the network information received from the SDN nodes, calculate a plurality of traffic optimization decisions based on the aggregated network information, and forward the traffic optimization decisions to the SDN nodes.

主权项

1. A network node for managing a plurality of control plane functions for a plurality of nodes within a software defined networking (SDN) domain, comprising:
a processor configured to:
collect a plurality of fine-grain network information from the nodes;determine coarse-grain network information based on a plurality of domain-specific policies by removing the fine-grained information considered private to the SDN domain as defined by the domain-specific polices and then aggregating the remaining fine-grained information as defined by the domain-specific policies;transmit the coarse-grain network information to an optimization node outside out the SDN domain and configured to implement an Application Layer Traffic Optimization (ALTO) protocol;receive, from the optimization node, a plurality of traffic optimized resource maps calculated based on the coarse-grain network information;produce routing tables and flow tables based on the resource maps; andcompute forwarding decisions for the nodes based on the routing tables and the flow tables.