Abstract: Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as preferences of network resources with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that intersects network and cost maps for a first network with network and cost maps for a second network to generate a master cost map that includes one or more master cost entries that each represent a cost to traverse a network from an endpoint in the first network to an endpoint in the second network. Using the master cost map, a redirector may select a preferred node in the first network with which to service a content request received from a host in the second network.

Abstract: Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as preferences of network resources with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that implements enhancements to the ALTO service to enable initiating incremental updates of network and cost maps to ALTO clients upon receiving status information from a content delivery network (CDN) node.

Abstract: An example network system includes network interfaces, a data repository, a forwarding structure, a service element, and a forwarding element. The forwarding element is configured to receive a first packet having header information via a tunnel over the first network with one of the networking interfaces, pass the first packet to the service element, receive a second packet from the service element, and forward the second packet via the network interfaces to the second network, wherein the first packet conforms to the first network-layer protocol, and wherein the second packet conforms to the second network-layer protocol. The service element is configured to transform the first packet from a format conforming with the first network-layer protocol into the second packet having a format conforming with the second network-layer protocol, and direct the second packet to the forwarding element.

Abstract: Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as preferences of network resources with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that implements enhancements to the ALTO service to enable initiating incremental updates of network and cost maps to ALTO clients upon receiving status information from a content delivery network (CDN) node.

Abstract: Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as preferences of network resources with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that intersects network and cost maps for a first network with network and cost maps for a second network to generate a master cost map that includes one or more master cost entries that each represent a cost to traverse a network from an endpoint in the first network to an endpoint in the second network. Using the master cost map, a redirector may select a preferred node in the first network with which to service a content request received from a host in the second network.

Abstract: Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as network resource preferences with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that implements enhancements to the ALTO service to assign a PID-type attribute to each of a set of one or more PIDs each associated with a subset of one or more endpoints of a network, wherein a PID-type attribute specifies a type for the subset of endpoints associated with the PID. The ALTO server generates an ALTO network map that includes a PID entry to describe each of the PIDs, wherein each PID entry includes a PID-type field that stores the assigned PID-type attribute for the PID described by the PID entry.

Abstract: The present invention provides systems and methods enabling network nodes to process data in a more efficient manner. In one aspect, the present invention analyzes data processed in a network node and determines whether the data requires processing in a stateful mode. If the data does not require processing in a stateful mode, the present invention processes the data in a stateless mode thereby saving processing resources. Embodiments of the present invention permit selection of processing modes in both manual and dynamic manners. Further, the determination of whether to process data in a stateful or a stateless mode may be made in response to various stimuli.

Abstract: An overlay network includes a virtual content server for representing a content provider in a virtual content network and at least a client having a membership in the virtual content network and a content path between the virtual content server and the client. Each node in the content path is also a member of the virtual content network and each link between nodes is provided by a tunnel to ensure trust and integrity at the content level.

Abstract: In one embodiment of the invention, browser plug-in includes a personal content tunnel (PCT) object processor, a PCT resolution module, and a server interface. The PCT object processor processes a PCT object returned by a content server in response to a request from a client. The PCT object contains PCT information. The PCT resolution module resolves a service uniform resource identifier (URI) using the PCT information according to a PCT resolution protocol. The service URI identifies a PCT resolution server. The server interface receives a content URI and a PCT termination point resolved by the PCT resolution server.

Abstract: An overlay network includes a virtual content server for representing a content provider in a virtual content network and at least a client having a membership in the virtual content network and a content path between the virtual content server and the client. Each node in the content path is also a member of the virtual content network and each link between nodes is provided by a tunnel to ensure trust and integrity at the content level.