Method and device for cooperative processing of data between CDN (Content Delivery Network) and ISP (Internet Service Provider)

Embodiments of the invention disclose a method and a device for cooperative processing of data between a CDN (Content Delivery Network) and an ISP (Internet Service Provider), the ISP knows a cache server, which is selected to provide the service for a client by the CDN network, and the interaction complexity is low and implementation is simple. In the technical scheme of the invention, the ISP knows the cache server, which is selected to provide the service for the client by the CDN network, so that the ISP can master the actual flow of the network in real time to provide a better cooperation basis for cooperative processing of the data between the CDN and the ISP, and furthermore, the ISP network utilizes the SDN technology to carry out real-time congestion processing and flexible routing according to the actual flow of the network, the network is more flexibly monitored and managed, and the customer experience is improved.