Abstract: Techniques for managing forwarding configurations in a data communications network include accessing, at least one controller, a packet-processing policy defined by a user in a general-purpose programming language other than a programming language of data forwarding element forwarding rules, the packet-processing policy specifying how data packets are to be processed through the data communications network via the at least one controller. A forwarding configuration for at least one data forwarding element in the data communications network may be derived from the user-defined packet-processing policy, and may be applied to the at least one data forwarding element.

Abstract: Techniques for managing forwarding configurations in a data communications network include accessing, at least one controller, a packet-processing policy defined by a user in a general-purpose programming language other than a programming language of data forwarding element forwarding rules, the packet-processing policy specifying how data packets are to be processed through the data communications network via the at least one controller. A forwarding configuration for at least one data forwarding element in the data communications network may be derived from the user-defined packet-processing policy, and may be applied to the at least one data forwarding element.

Abstract: A method, system and computer program product for efficiently distributing video content. A peer-to-peer network and a content distribution network are used in combination to distribute video content. A content distribution network relies on servers distributed across the Internet to achieve high quality content delivery at a high cost. A peer-to-peer network distributes content among peers without incurring server side cost but may experience poor performance. The peer-to-peer network and the content distribution network are leveraged in a manner that achieves high content delivery and low cost by allowing the peer-to-peer network to serve as much content as possible while using the content distribution network to bootstrap the content in the peer-to-peer network and using it as a fallback whenever the peer-to-peer network has insufficient bandwidth, insufficient quality or when the missing piece of video content in the video buffer of the client device has an immediate deadline.

Abstract: A method, system and computer program product for efficiently distributing video content. A peer-to-peer network and a content distribution network are used in combination to distribute video content. A content distribution network relies on servers distributed across the Internet to achieve high quality content delivery at a high cost. A peer-to-peer network distributes content among peers without incurring server side cost but may experience poor performance. The peer-to-peer network and the content distribution network are leveraged in a manner that achieves high content delivery and low cost by allowing the peer-to-peer network to serve as much content as possible while using the content distribution network to bootstrap the content in the peer-to-peer network and using it as a fallback whenever the peer-to-peer network has insufficient bandwidth, insufficient quality or when the missing piece of video content in the video buffer of the client device has an immediate deadline.