Abstract: Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with increased scalability. In particular, the MVPNs may transport layer three (L3) multicast traffic, such as Internet Protocol (IP) packets, between remote sites via the public network. The principles described herein may reduce the overhead of protocol independent multicast (PIM) neighbor adjacencies and customer control information maintained for MVPNs. The principles may also reduce the state and the overhead of maintaining the state in the network by removing the need to maintain at least one dedicated multicast tree per each MVPN.

Abstract: A network bridge connects a host device, such as digital media player, cell phone or camera, to content sources over a network to permit the host device to transmit or receive digital media. The network bridge includes a network interface module that identifies at least one media source as well as digital media available on the network. A host device interface module receives, from the host device, file system requests in accordance with a protocol, such as a mass storage protocol. In response to the request, a host device protocol interface module on the network bridge translates the file system request to a request for digital media. The network interface module acquires digital media from the media source, and the host device interface module transfers the digital media to the host device in accordance with the interface protocol. The network bridge may connect to one or more services that provide content to the host device. For example, the services may be accessible over the Internet.

Abstract: A method of bandwidth control and a corresponding bandwidth control device are disclosed, in which a plurality of queues are provided, bandwidth is assigned to each of the queues on the basis of a strict priority scheme, and additional bandwidth is assigned to the queues on the basis of a fair queuing scheme.

Abstract: A method for improving subscriber access capacity of a broadband access device is disclosed, including: establishing a Virtual Local Area Network Path Identifier (VlanPI) and corresponding VlanPI Tag, establishing a VLAN Circuit identifier (VlanCI) and corresponding VlanCI Tag for each access port of the broadband access device, dividing the access ports into groups and assigning the established VlanPIs to each group; then, before transmitting an ethernet frame, determining the VlanCI which corresponds to the access port and inserting the VlanCI Tag for identifying the VlanCI into the standard ethernet frame, determining the VlanPI corresponding to the group to which the access port belongs and inserting the VlanPI Tag which is used to identify the VlanPI into the standard ethernet frame, and transmitting the ethernet frame to an uplink device through an uplink port by the broadband access device which directly connects with the uplink device.

Abstract: Disclosed is a method for depacketization of multimedia packet data, the method comprising: a context-aware step of parsing and recording a start code, which can identify each frame, in a first portion of a payload of a real-time transport protocol (RTP) packet; and a step of performing depacketization according to each packet by using the start code.

Abstract: A SAN connectivity advisor analyzes the physical connections of a physical fabric, identifies logical connections based on the physical connections and connectivity information, and applies a set of connectivity rules indicative of good or mandatory SAN connection practices. The connectivity advisor generates a report indicative of connections that may need or benefit from modification, typically an error message for each suspect connection found. The connectivity advisor applies the rules to each physical and logical connection to qualify the connection according to the rules, thus reflecting the actual configuration at the port-to-port connection level, rather than the conventional device-to-device level. Further, the connectivity advisor does not require an interoperability matrix or other database query of device interoperability.

Abstract: An Internet group membership protocol (IGMP) network device and a signal processing control method thereof in an Internet protocol (IP) digital broadcasting system are provided. The method includes: when an IGMP packet is received from an IGMP client, determining, at a packet transmission/reception unit, whether or not the received IGMP packet is transmitted via bypass; when it is determined that the IGMP packet received from the IGMP client is transmitted via bypass, copying, at the packet transmission/reception unit, the received IGMP packet and bypass-transmitting an original IGMP packet to an upper IGMP network device; transmitting, at the packet transmission/reception unit, the copied IGMP packet to a host; and receiving, at the host, the IGMP packet from the packet transmission/reception unit, processing the IGMP packet, and simultaneously updating its multicast table and a multicast table of the packet transmission/reception unit.

Abstract: Provided is a method for sharing contents between devices using an IEEE 1394 interface in a DLNA system. The method includes transporting a SetAVTransportURI from a DMP to a DMS, and informing the DMS of a URI of a content; upon receipt of the SetAVTransportURI, performing the steps of transporting a “CONNECT” command to the DMP using a protocol, and preparing contents transport between the DMP and the DMS; upon preparation of the contents transport, performing the steps of transporting a command depending on each environment between the DMP and the DMS, controlling contents transport in the IEEE 1394 interface, and linking the contents transport between the DMP and the DMS; and upon ending of the contents control and transport, performing the steps of transporting a “DISCONNECT” command between the DMP and the DMS using the protocol, performing a cleanup between the DMP and the DMS, and ending the contents transport.

Abstract: A network control device that has a packet filtering unit for implementing packet filtering based on prescribed information in a header of a received packet, which includes: a position designating unit that designates a prescribed comparison position in a higher level protocol header to the header of the received packet; and an additional determination unit that implements pattern matching filtering by comparing data at the comparison position designated by the position designating unit with preset data.

Abstract: A router receives a control plane message for constructing a first LSP to a destination within a network that conforms to a first type of LSP. The control plane message includes a label for the first LSP and an identifier that identifies a first type of data traffic. The router receives a second control plane message for constructing a second LSP that conforms to the first type of LSP. The second control plane message includes a label for the second LSP and an identifier that identifies a second type of data traffic. The router installs forwarding state in accordance with policies that associate the first and second types of data traffic with different LSPs of a second type that each traverse different paths through the network, and forwards packets via the interface in accordance with the installed forwarding state.

Abstract: A hardware-based failover scheme enabling rapid end-to-end recovery is provided. Hardware logic periodically generates, transmits, receives, and processes heartbeat packets, sent from one end of the communications network to another, and then returned back. If a communications network node or communications link failure is being experienced along the transport path, then the hardware logic rapidly swaps the affected traffic conveyed to a pre-established backup transport path, typically within microseconds. Advantages are derived from the rapid failover effected end-to-end which enables continued delivery of provisioned communications services improving the resiliency and/or availability of a communications network.

Abstract: The present invention relates to methods and devices that support mobility of a client across a campus, particularly mobility across VLANs and subnets, while preserving the client's assigned IP address. Both layer 2 and layer 3 packets are supported. Mobility support most clearly applies to wireless clients, but could apply to other kinds of mobile connections, even to wired connections. A smart server is adapted to support multiple VLANs and to modify and redirect packets in sessions with a client that moves from one VLAN to another, preserving the client's assigned IP address. Two or more smart servers, in cooperation with a smart manger, modify packets and tunnel them between smart servers when a client that moves from one VLAN to another and from one smart server to another, again preserving the client's assigned IP address.

Abstract: A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the equipment to an existing twisted cable pair and a facilities management platform (FMP) at the serving local switching office as an interface to various networks and service opportunities, new services such as simultaneous, multiple calls (voice analog or digital), facsimile, Internet traffic and other data can be transmitted and received over the twisted cable pair by using digital subscriber loop transmission schemes. The new services include but are not limited to videophone, utility meter reading and monitoring, broadcasting and multicasting.

Abstract: A network management system comprises generic routing encapsulation (GRE) logic configured to establish upon request one or more GRE tunnels from one or more network interfaces; routing protocol logic, coupled to a route database in the apparatus, and configured to operate a network routing protocol and to exchange network route information; network management logic configured to request the GRE logic to establish a particular GRE tunnel from the apparatus to a particular router in the network, to request the routing protocol logic to establish a synchronized route database associated with the apparatus for the particular router using the particular GRE tunnel, to determine whether the synchronized route database is missing one or more particular routes, and to generate a notification message when the synchronized route database is missing the one or more particular routes.

Abstract: A system for resolving address conflicts in a network. In an illustrative embodiment, the system includes an address-configuration module that is adapted to assign addresses to one or more devices. The one or more devices are connected to the network via device interfaces. An interface-monitoring module communicates with the address-configuration module. The interface-monitoring module is adapted to determine when an address conflict involving plural addresses occurs and to provide a signal in response thereto. A conflict-resolution module is adapted to selectively terminate one or more device interfaces associated with the plural addresses in response to the signal and based on the addresses and one or more predetermined precedence rules. In a more specific embodiment, the system further employs a user interface for facilitating selectively adjusting the precedence rules.

Abstract: A system and methods for wireless computing devices to become mesh member nodes within a self-configuring mesh network includes mechanisms for neighbor discovery and sharing of a common topology database including mesh topology and mesh network information. Each mesh node may use the topology database to determine optimized routing paths within the mesh network. Mesh member nodes are configured to detect and communicate topology changes and measured mesh network attributes to other members of the self-configuring wireless network.

Abstract: A wireless system including a first network protocol, a second network protocol, and an interoperability node. The interoperability node operable on the system to register a station pending registration at one of the network protocols.

Abstract: In a frame transfer processing method and device, information indicating a flooding destination is preset for every physical transmission line and every VLAN when a plurality of VLANs are accommodated in a single logical transmission line where physical links are aggregated, a single transmission line is set to be used when a flooding frame is transferred to the transmission line where the links are aggregated, and the flooding destination is changed per physical link without operating the information indicating the flooding destination for every VLAN when the transmission line has failed.

Abstract: A packet transmission system is provided which successively sends source data from a sender unit after dividing the data into packets and sends a receipt acknowledgment in response to each packet sent from a receiver unit that has received the receive packet to the sender unit. The receiver unit has: a data position storage unit storing the data position of the received, already received packet on the source data; a data position comparison unit comparing the data position on the source data stored in the data position storage unit and the data position of the receive packet on the source data; and a receipt acknowledgment creation unit creating the receipt acknowledgment in a case where the data position comparison unit determined that the data position of the receive packet on the source data is behind the data position on the source data stored in the data position storage unit.

Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver capable of recovering from disjoint clusters in a mesh network by adding an additional Extended Service Set number (ESS Number) information element (IE) in the Beacon and Probe Response frames in at least one access point (AP) in said mesh network and all newly joining APs performing a scan of all channels to detect what channel the extended service set (ESS) is running on its ESS Number and putting this ESS number into their beacons Probe responses.