Abstract: A system is disclosed for establishing a public identity for an entity on a private network. In one embodiment, a first entity can initiate a request to create a binding of a public address to a private address for itself. The existence of this public address for the first entity can be made known so that other entities can use the public address to communicate with the first entity. The present invention allows entities outside of a private network to initiate communication with an entity inside a private network.

Abstract: A system is disclosed for establishing a public identity for an entity on a private network. In one embodiment, a first entity can initiate a request to create a binding of a public address to a private address for itself. The existence of this public address for the first entity can be made known so that other entities can use the public address to communicate with the first entity. The present invention allows entities outside of a private network to initiate communication with an entity inside a private network.

Abstract: A private virtual dynamic network is provided for computing devices coupled to public networks or private networks. This enables computing devices anywhere in the world to join into private enterprise intranets and communicate with each other. In one embodiment, the present invention provides a separate private virtual address realm, seen to each user as a private network, while seamlessly crossing public and private network boundaries. One implementation of the present invention uses an agent to enable an entity to participate in the network without requiring the member to add new hardware or software.

Abstract: A system is disclosed for establishing a public identity for an entity on a private network. In one embodiment, a first entity can initiate a request to create a binding of a public address to a private address for itself. The existence of this public address for the first entity can be made known so that other entities can use the public address to communicate with the first entity. The present invention allows entities outside of a private network to initiate communication with an entity inside a private network.

Abstract: Data transfer rates on a network are controlled in conjunction with TCP/IP protocols by limiting the available space in a receive buffer located on the receiver. Limits are generated by either moderating the rate that data is removed from the receive buffer or changing the receive buffer's size. Transfer rates are reduced to decrease the impact large transfers have on other network traffic and to reduce the total number of lost data packets. Reduced rates and priorities can be managed by scheduling systems.

Abstract: A system is disclosed that allows an entity outside of a private network to initiate communication with an entity inside the private network. The entity inside of the private network maintains a persistent connection with an agent. In one embodiment, communications that are intended for the entity inside the private network are sent to the agent. The agent then forwards the communications to the entity inside the private via the persistent connection.

Abstract: The present invention provides for a system for communicating with a host using a global address and a local address. The present invention allows for the communication to be initiated by an entity outside the host's network. The entity initiating the communication resolves the destination host's domain name into a global address and a local address. Messages are sent to the destination host using both the global address and the local address. In one embodiment, both the global and local address are included in the message by encapsulating IP packets. Some embodiments of the present invention also use pseudo addressing.

Abstract: A system and method for scheduling transfers of data through a network, the system comprising a transfer module at each node in the network, the transfer module being configured to schedule data transfers according to available resources at each node. In one embodiment, the transfer module includes a scheduling module, a routing module, and an execution module. The scheduling module at each node evaluates a single hop request in view of objectives, such as a deadline, and the available resources at that node, for example transmit bandwidth, receive bandwidth, and storage space, all of which may change as a function of time.

Abstract: A system for automated and optimized file transfers among devices in a network comprises a client configured to request a file transfer, a server configured to transfer the requested file to the client, and a scheduling module configured to schedule delivery of the file to the client. The scheduling module preferably schedules the delivery of the file to be completed by a deadline. In an alternate embodiment, the file is transferred to a device in the network that did not send the request. The file transfer may be requested by a user at the client or may be requested by a pre-fetch module of the client.

Abstract: A private virtual dynamic network is provided for computing devices coupled to public networks or private networks. This enables computing devices anywhere in the world to join into private enterprise intranets and communicate with each other. In one embodiment, the present invention provides a separate private virtual address realm, seen to each user as a private network, while seamlessly crossing public and private network boundaries. One implementation of the present invention uses an agent to enable an entity to participate in the network without requiring the member to add new hardware or software.

Abstract: A private virtual dynamic network is provided for computing devices coupled to public networks or private networks. This enables computing devices anywhere in the world to join into private enterprise intranets and communicate with each other. In one embodiment, the present invention provides a separate private virtual address realm, seen to each user as a private network, while seamlessly crossing public and private network boundaries. One implementation of the present invention uses an agent to enable an entity to participate in the network without requiring the member to add new hardware or software.

Abstract: A system is disclosed that allows an entity outside of a private network to initiate communication with an entity inside the private network. The entity inside of the private network maintains a persistent connection with an agent. In one embodiment, communications that are intended for the entity inside the private network are sent to the agent. The agent then forwards the communications to the entity inside the private via the persistent connection.

Abstract: A system is disclosed that allows an entity outside of a private network to initiate communication with another entity inside the private network. A first entity inside the private network maintains a persistent connection with a second entity outside the private network, with a port identification associated with the first entity's persistent connection. A third entity outside the private network obtains the port identification and initiates communication with the first entity by sending a message to the first entity using the port identification. The first and third entities then exchange communications outside the persistent connection. In an alternate implementation, the third entity uses the port identification to send the first entity a request for establishing a connection. The request is forwarded to the first entity through the persistent connection. The first entity responds by establishing a connection with the third entity outside the persistent connection.

Abstract: A system is disclosed for establishing a public identity for an entity on a private network. In one embodiment, a first entity can initiate a request to create a binding of a public address to a private address for itself. The existence of this public address for the first entity can be made known so that other entities can use the public address to communicate with the first entity. The present invention allows entities outside of a private network to initiate communication with an entity inside a private network.

Abstract: Data transfer rates on a network are controlled in conjunction with TCP/IP protocols by limiting the available space in a receive buffer located on the receiver. Limits are generated by either moderating the rate that data is removed from the receive buffer or changing the receive buffer's size. Transfer rates are reduced to decrease the impact large transfers have on other network traffic and to reduce the total number of lost data packets. Reduced rates and priorities can be managed by scheduling systems.

Abstract: A system and method for scheduling transfers of data through a network, the system comprising a transfer module at each node in the network, the transfer module being configured to schedule data transfers according to available resources at each node. In one embodiment, the transfer module includes a scheduling module, a routing module, and an execution module. The scheduling module at each node evaluates a single hop request in view of objectives, such as a deadline, and the available resources at that node, for example transmit bandwidth, receive bandwidth, and storage space, all of which may change as a function of time.

Abstract: A method for increasing the storage capacity of a video server which utilizes an array of disks is disclosed. The server is operated so that the continuity of a plurality of bit streams is maintained. The inventive method has advantageous characteristics with respect to storage capacity, streaming capacity, start-up latency of new streams, amount of required buffer capacity, scalability, reliability and multiple bit rates.

Abstract: In a live multicast in a LAN environment, audio and video streams are transmitted from a source station to a plurality of receiving stations. A technique is disclosed for synchronizing the audio decoder clock at each receiving station with the source station. A technique is also disclosed for synchronizing the audio and video data streams received at each receiving station.

Abstract: An apparatus and method for use in a network including source clients and viewer clients connected to one or more shared transmission media. A video server is connected to one of the transmission media and is operative to control the broadcast and storage of multiple live or previously-stored video streams. The control may be provided via remote procedure call (RPC) commands transmitted between the server and the clients. In one embodiment, a video presentation system is provided in which a video stream from a source client is continuously broadcast to a number of viewer clients. One or more of the viewer clients may be authorized by the source client to broadcast an audio and/or video stream to the other clients receiving the source video stream. In another embodiment, a multicast directory is provided to each of a plurality of viewer clients by transmitting directory information in a packet corresponding to a predetermined multicast address.

Abstract: The present invention provides for a system This document describes embodiments for communicating with a host using a global address and a local address. The present invention allows These embodiments allow for the communication to be initiated by an entity outside the host's network. The entity initiating the communication resolves the destination host's domain name into a global address and a local address. Messages are sent to the destination host using both the global address and the local address. In one embodiment, both the global and local address are included in the message by encapsulating IP packets. Some embodiments of the present invention also use pseudo addressing.