Abstract: Arrangements for controlling multiple media access control interfaces are disclosed. In one embodiment a method for controlling the interfaces can include setting up a transmission configuration for a first and a second media access control (MAC) interface, sending a transmission utilizing the first MAC interface and sending a transmission utilizing the second MAC interface. During subsequent communications communication performance parameters can be determined that are related the “multi”-MAC transmissions. Based on the communication performance parameters the transmission configuration of the first MAC interface and the second MAC interface can be modified to improve communication performance.

Abstract: Apparatus for performing multiplexing and de-multiplexing of packetized digital data streams, including receivers for receiving data packets from packetized digital data streams, validating the packets, and transmitting only valid packets, PID filters for filtering packets according to a Packet ID included in the packets, the filters receiving valid packets from the receivers, and associating a store-or-drop value with each valid packet, input FIFO buffers for receiving valid packets from the receivers, receiving the store-or-drop value from the PID filters, and storing data based, at least in part, on the store-or-drop value, an input/output unit for transmitting the stored data from the input FIFO buffers to an external memory and reading data from the external memory, output FIFO buffers for receiving data from the input/output unit and storing the data, and transmitters for reading digital data packets from the output FIFO buffers and transmitting the packets as a packetized digital data stream, thereby d

Abstract: A method for transmitting an image file uses an image application program which can cooperate with a web-phone application program. The web-phone application program is responsible for transmitting the image file. After the web-phone application program on a receiver side receives the image file, the image file is displayed on the operating interface of the image application program on the receiver side.

Abstract: In a communication system having a plurality of physical communication ports, a hierarchical bond communication interface has a logical interface as a component of the bond at a top level of the hierarchy, and a first subjugate logical interface at a second level of the hierarchy as a component of the top-level logical interface. The communication system has a control mechanism whereby thresholds may be set to determine up or down status of hierarchical bonds for use in communication, according to characteristics of components of the bonds.

Abstract: A system, apparatus, article of manufacture, and method provides one or more distributed convergence nodes referred to as “Supernodes”, each of which is embodied as a functional technology component within an application that automatically determines whether said component should become “active” and assume the responsibility of forwarding IP multicast data present on a LAN (which supports IP multicast communication) to a “Routing Supernode” via a WAN (which does not support IP multicast communication). The Routing Supernode, in turn, is responsible for forwarding that traffic to other Supernodes present on other LANs. The traffic sent to and from the Routing Supernode is sent via unicast communication. All Supernodes are responsible not only for forwarding traffic present on their respective LAN across the WAN to a Routing Supernode, but they are also responsible for forwarding traffic received over the WAN from the Routing Supernode onto their own respective LANs.

Abstract: An apparatus and a method for a Multicast and Broadcast Service (MBS) in a Broadband Wireless Access (BWA) system are provided. A broadcasting server in a broadcasting service system includes a storage for storing broadcasting contents; a controller for determining relative offset information for a broadcasting start time with respect to each Internet Protocol (IP) packet; a generator for generating IP packets with the contents provided from the storage and recording the determined relative offset information in the generated IP packets; and a transmitter for transmitting the packets including the relative offset information to an Access Control Router (ACR).

Abstract: A method and apparatus for providing a flexible virtual forwarding table for packet networks are disclosed. For example, the method receives one or more packets from at least one customer endpoint device, where the one or more packets are destined for a destination node. The method then locates a route for routing the one or more packets by consulting one or more virtual forwarding projection tables, wherein each of the one or more virtual forwarding projection tables contains a subset of the routes that are stored in a virtual route forwarding table. Finally, the method forwards the one or more packets towards said destination node using said route.

Abstract: A method and apparatus that routes packets in a network is disclosed. The method may include receiving a packet from a first communication device in the network requesting an IP address, determining if another communication device owns the requested IP address, wherein if another communication device does not own the requested IP address, giving the IP address to the first communication device, otherwise, if it is determined that a second communication device is claiming ownership of the IP address, determining whether the first communication device or the second communication device owns the IP address using an address request authority percentage protocol (ARAPP) function, wherein based on the results of the ARAPP function, the first communication device is given the IP address, otherwise the IP address request from the first communication device is denied.

Abstract: Method and system for providing access layer satellite architecture in a data network including receiving a data packet from an access layer network device, the data packet including a Virtual Local Area Network (VLAN) identifier associated with a port on the access layer network device, performing a route lookup procedure based on the received data packet to determine a destination of the data packet, updating an ARP table with a Media Access Control (MAC) address associated with the VLAN identifier and the port of the received data packet, and transmitting the data packet to a destination network device, is disclosed.

Abstract: A system and method of managing redundant and multi-segment pseudo-wire, including calculating two aggregated endpoints with two or more local endpoints, at least one local endpoint being a backup endpoint, mapping the aggregated endpoints and a plurality of nodes interconnected with one another and the local endpoints, determining an overall status of the system and setting an overall status indicator, determining an operational status of individual components in the system and setting associated status indicators.

Abstract: A method for policy-based routing of calls between nodes in a network, comprising: entering policy constraint indices for selected addresses in respective entries of an address translation table, the address translation table for accessing by a first node of the network to selectively translate attributes of calls based on respective addresses prior to transmission over the network to a second node, the policy constraint indices pointing to respective policy constraints for routing calls between the first and second nodes; receiving a call at the first node, the call including an address; accessing the address translation table using the address to determine whether the call requires assignment of a policy constraint by presence of an entry for the address in the address translation table and by presence of a policy constraint index in the entry; and, if the call requires assignment of a policy constraint, identifying a policy constraint with the policy constraint index, assigning the policy constraint to the

Abstract: System and method for routing data packets in an Ethernet switch. A preferred embodiment comprises receiving a data frame at a first port, wherein the data frame comprises a header portion and payload portion. The header portion is analyzed to determine a destination port for the data frame. A destination status is added to the header portion to create a modified header portion. The modified header portion is stored in an on-chip memory. The payload portion is stored in an off-chip memory. An on-chip CPU instructs a DMA controller how to route the data frame.

Abstract: A method is provided for a port management system in which a switch is automatically provisioned with network resources. A command or set of commands are stored and automatically executed on the switch upon the occurrence of a defined network event. The command or set of commands may be associated with one or more ports on the switch. When executed, the commands cause a change to a port configuration and/or policy on the switch to control access to a network resource. The network resource may include any device or service accessible on the network. The defined network event may include any network event associated with a device or user connected to the network. The command or set of commands may reference variables, control structures, and functions to modify command execution.

Abstract: A method is disclosed for extending a serial protocol to create a network in a well monitoring environment, including determining at a receiver node whether a message subnet mask ID in a received message is different from the Node Subnet Mask ID and rejecting the received message if the subnet mask ID in the received message does not match the subnet mask ID for the receiver node. A system for extending a serial protocol to create a network in a well monitoring environment also disclosed. A data structure used by the system and method is also disclosed.

Abstract: The invention includes a method and apparatus for synchronizing line card forwarding databases. A method includes receiving a data packet at a line card, generating a control packet for each of at least one other line card to enable an address update operation thereat, and propagating the at least one control packet toward the at least one other line card. The control packet, or packets, is generated in response to a determination to perform an address update operation for the received data packet. The address update process may be implemented as an ingress address update process or an egress address update process. This address update process performed in conjunction with an address aging process.

Abstract: Systems and methodologies are described that facilitate maintaining consistent radio-link layer protocol (RLP) sequence numbers in the event of an RLP sequence number reset. An offset can be adjusted upon occurrence of the event to reflect a subsequent expected sequence number. The offset can be added to the RLP sequence numbers such that receiving devices and/or higher layer applications can operate without realizing the sequence number reset. Additionally, the offset can be synchronized among base stations to facilitate operability following handoff of the receiving device.

Abstract: Processing packets of encoded real-time data to perform a gradual fade-out and fade-in of a signal, for example upon detecting a packet loss period. Upon detecting the packet loss period, a last correctly received packet is repeated with gradually increased attenuation, to solely fade out for example an audible output but similarly, after the end of a packet loss period the reappearing can be slowly faded in by attenuating the first or a number of first data packets after the packet loss period. The attenuation operation can be performed at low complexity by decrementing segment numbers of samples of data packets such as in a lookup operation.

Abstract: A system and method for implementing a Quality of Service (QoS) fallback using Resource Reservation Protocol (RSVP) includes initiating a communication session with a QoS precondition between a first domain and a second domain. It is determined whether the second domain supports the QoS precondition. Intra-domain RSVP is established in the first domain if the second domain does not support the QoS precondition.

Abstract: A memory subsystem includes Data Store 0 and Data Store 1. Each data store is partitioned into N buffers, N>1. An increment of memory is formed by a buffer pair, with each buffer of the buffer pair being in a different data store. Two buffer pair formats are used in forming memory increments. A first format selects a first buffer from Data Store 0 and a second buffer from Data Store 1, while a second format selects a first buffer from Data Store 1 and a second buffer from Data Store 0. A controller selects a buffer pair for storing data based upon the configuration of data in a delivery mechanism, such as switch cell.

Abstract: An apparatus receives packets from a network and inserts the packet data into the memory of a computer system. The invention reduces the amount of computer system memory bandwidth required to receive packets through the use of a retained data buffer. Packet headers and a summary of packet validation results are processed by network stacks within the computer system to identify the intended memory buffer in which the packet payload is to be placed. Packet payload data is directly placed from the retained data buffer to the intended memory buffer without the use of intermediate buffers. A preferred embodiment includes a data retention network interface card (DRNIC) which includes the required data retention buffer for use in direct placement of received data.

Abstract: A layer 2 routing protocol that may route packets from a source to a destination via intermediate devices is proposed. In some embodiments, the proposed routing scheme may be a variant of the AODV routing protocol that runs at layer 2. The routing may be transparent to upper layers (e.g., the IP layer), so no modifications whatsoever to upper layers are needed to enable multi-hop communication for WiMedia-based devices. The proposed scheme may take advantage of the information (e.g., detailed channel condition) and tools (e.g., beacon protocol) available at WiMedia MAC to reduce the overhead needed to exchange routing messages. The proposed scheme may also support end-to-end quality-of-service allowing applications to find and reserve resources along a route in a distributed manner.

Abstract: A system and method of managing data packets for transmission in a virtual network are disclosed. In some implementations, a network switch may generally comprise a packet modifier that modifies a VLAN tag state of a packet to be egressed as a function of an egress interface and a VLAN-ID assignment. The modified VLAN tag state may include one or more VLAN tags that are in a different order, or that have a different content, in comparison to the VLAN tags of the packet at the time of ingress.

Abstract: The present disclosure discloses a data frame forwarding method for forwarding a data frame via a data relay entity DRE applicable in an Ethernet, including: setting one or more ports of the DRE to be V-Switch enabled, and configuring one or more of the V-Switched DRE ports to operate in the V-Switch function and in an Ethernet function shared mode; configuring decision polices for forwarding a received data frame through the V-Switch function in the shared mode; when the data frame is received though the ports of the DRE configured in the shared mode, if flag information carried in the data frame matches the decision policies, forwarding the data frame through a forwarding process corresponding to the V-Switch function; otherwise forwarding the data frame through a forwarding process corresponding to an Ethernet function.

Abstract: The invention relates to data networks, to nodes making up parts of data networks, and to information relating to the characterisation of paths taken by data travelling between nodes in the networks. Path characterisation information is arranged to be conveyed to nodes such that it may be used by nodes subsequently forwarding data. In particular the invention relates to nodes receiving such path characterisation information from upstream nodes, deriving therefrom information indicative of characteristics of a path downstream of said nodes, and using such information to make informed decisions such as routing decisions when forwarding data onward in data networks.

Abstract: A method and apparatus for determining the relative locations of nodes in a wireless network is disclosed. A list of neighboring nodes of a master node of the wireless network is generated and, from this list, a list of independent nodes is generated. An adjacency table for the independent nodes is then generated by examining the neighbors of dependent nodes. Two independent nodes are determined to be adjacent nodes only if they are the only neighboring nodes of a dependent node. Relative locations of nodes in wireless network may be determined from the adjacency table.

Abstract: A system, method, and interworking function for interfacing the Multimedia Messaging Service (MMS) and IP Multimedia Subsystem (IMS) messaging systems. When an Multimedia Messaging Service Center (MMSC) receives an MMS message, the MMSC determines whether the message is addressed to an MMS user or an IMS user. If addressed to an MMS user, the MMSC routes the MMS message to an email server for forwarding to another MMSC. If addressed to an IMS user, the MMSC routes the MMS message to the interworking function. The interworking function converts a destination address in the MMS message to a destination address for the IMS user that is routable through a Session Initiation Protocol (SIP) core network. The message may be mapped to a SIP MESSAGE format or an MSRP format and sent through the SIP core network to the addressed IMS user.

Abstract: In one embodiment, a method includes setting a re-flood time to a non-zero first value. Update data that indicates a change to link data is received over a network interface from an updating node of multiple nodes on a multi-access segment connected to the interface. The change is to link data that indicates links on the updating node. It is determined whether an acknowledgment message is not received within the re-flood time from a particular node of the multiple nodes. If an acknowledgment message is not received within the re-flood time, then a multicast packet directed to the multiple nodes and including the change to the link data is sent over onto the segment. This method enables rapid response to failure of a primary node designated to ensure reliable flooding of link data.

Abstract: User interfaces are described for modeling estimations of resource provisioning. An example user interface may request a display of graphical indicators associated with nodes and edges, request a determination of an indicator of a service node workload associated with a service node included in a workflow path based on attribute values associated with the service node and an indicator of a propagated workload, and request provisioning of service nodes onto hardware nodes. The nodes may include external invocation nodes, service nodes, and hardware nodes, and the edges may include node connectors. An indication of an arrangement of an external invocation node, a group of service nodes, a group of node connectors, and a group of hardware nodes may be received, wherein the arrangement may be configured by a user interacting with the displayed graphical indicators, and may represent a workflow path.

Abstract: In an MPLS/GMPLS network, a link used by a communication path for each hop and adaptations used at the boundary between management domains or layers are appropriately and automatically selected according to a service type and a required maintenance condition, without making a control sequence complicated. First, a unit for requesting path establishment by including an identifier of a service to be provided and a service attribute in a communication path establishment control message is provided for a source node. Second, a unit for determining a required maintenance condition for a communication path and adaptations according to the service identifier and/or the service attribute is provided for each node. Third, links and nodes through which the communication path passes are determined by comparing each of achievable maintenance conditions for network resources with the required maintenance condition.

Abstract: A method for fast converging an end-to-end service and a Provider Edge (PE) includes: setting routing information of at least two tunnels in a double-ascription PE of a remote Customer Edge (CE), wherein, the two tunnels are from the double-ascription PE of the remote CE to the PE connected with the remote CE; detecting tunnel states to obtain state information of the tunnels; the double-ascription PE obtaining available routing information and routing information of the at least two tunnels, and forwarding the service according to the available routing information. The double-ascription PE of the remote CE can directly forward the service according to the pre-configured routing information of other tunnels when the current tunnel is unavailable, such as a terminal node of the current tunnel is abnormal, thereby avoids the procedure of re-selecting the route, and increases the end-to-end service convergence speed and improves the service reliability.

Abstract: Techniques are described for configuring intercommunications between multiple computing nodes, such as multiple virtual machine nodes hosted on one or more physical computing machines or systems. In some situations, virtual networks may be established and maintained for groups of computing nodes, such as those operated by or on behalf of various users. Such virtual networks may be established in some situations by automatically configuring various communication manager modules to associate communications from a computing node belonging to a virtual network with one or more networking identifiers associated with the virtual network, such that other communication manager modules may appropriately forward or otherwise process such communications.

Abstract: A method includes receiving a Real-Time Transport Protocol (RTP) packet at a first gateway and translating the RTP packet into a H.221 frame. The H.221 frame includes a H.263-compressed video bitstream. The H.221 frame may also include a H.221 Bit-Rate Allocation Signal (BAS) message to communicate RFC2190-compliant fragmentation boundary information containing Macroblock (MB) boundary to a second gateway, if there is no picture start code (PSC) or Group of Block start code (GBSC) at a start portion of the RTP packet. The method further includes transmitting the H.221 frame from the first gateway to the second gateway; and fragmenting the H.263 video bitstream contained in the H.221 frame at a PSC, a GBSC, or a Macroblock (MB) boundary contained in the H.221 BAS fragmentation message.

Abstract: A system and method for deploying communication services is disclosed. A system that incorporates teachings of the present disclosure may include, for example, a cross-connect system having an Ethernet switch coupled to a central office and coupled to a plurality of buildings by way of a plurality of digital subscriber line (DSL) ports, and a worldwide interoperability for microwave access (WiMAX) transceiver coupled to a high speed port of the Ethernet switch. The WiMAX transceiver can be used to augment a limited capacity of at least one of the plurality of DSL ports by distributing a portion of services carried by the at least one DSL port to the WiMAX transceiver. Accordingly, the cross-connect system can supply dual-mode communications. Additional embodiments are disclosed.

Abstract: A network may include a first customer edge (CE) router and a second CE router. The first CE router may run an external border gateway protocol (EBGP) to exchange routing information with a first provider edge (PE) router that is in a first multi-protocol label switching (MPLS) network and may run an interior gateway protocol (IGP) to exchange routing information with the second CE router. The second CE router may run the IGP to exchange routing information with the first CE router and may run the EBGP to exchange routing information with a second PE router in a second MPLS network.

Abstract: Included are embodiments for determining an extension-to-channel mapping. At least one embodiment includes determining, at a first time, a first extension-to-channel mapping configuration, the first extension-to-channel mapping configuration including an indication that at least one extension is coupled to a first recording channel. Similarly, some embodiments include determining, at a second time, a second extension-to-channel mapping configuration, the second extension-to-channel mapping configuration including an indication that the at least one extension is coupled to a second recording channel. Similarly, some embodiments include creating an extension-to-channel map, the extension-to-channel map indicating a configuration of the at least one extension, the first recording channel, and the second channel during a time period between the first time and the second time.

Abstract: A computer implemented method and apparatus are provided for transferring data in a logical partitioned data processing system. A receiving adapter receives data from a network. The receiving adapter transfers the data to a pre-mapped buffer if the data is to be sent to a target adapter. A virtual bridge receives the pre-mapped buffer from the receiving adapter and transfers the pre-mapped buffer to the target adapter. The target adapter receives the pre-mapped buffer from the virtual bridge and determines that the received buffer is pre-mapped. The target adapter accesses the pre-mapped buffer using pre-mapped mapping, and transmits the data contained therein.

Abstract: A network switch automatically detects Voice over Internet Protocol (VoIP) traffic and mirrors the VoIP traffic to a security management device. The security management device measures a rate of call setup packets in the VoIP traffic. The security management device detects an attack based on a comparison of the measured rate of call setup packets to a threshold rate. Detected attacks are mitigated.

Abstract: A system and method for preventing a count-to-infinity problem in a network using epochs of sequence numbers in protocol messages to eliminate stale protocol information in the network and to allow the forwarding topology to recover in merely one round trip time across the network.

Abstract: Device, system and method of multicast communication. For example, an apparatus in accordance with an embodiment of the invention includes a non-kernel multicast protocol handler adapted to perform a multicast operation of a user mode application by bypassing the operating system kernel and directly accessing a communication adapter having an operating system bypass capability.

Abstract: Methods and systems for communicating between Teredo clients behind UPnP-enabled symmetric or restricted Network Address Translators.

Abstract: Methods and systems for communicating between Teredo clients behind symmetric or restricted Network Address Translators.

Abstract: A communication device has link aggregation management tables, one for each of a plurality of line cards, each of the link aggregation management tables managing a relation between a link aggregation group and ports belonging thereto. The communication device has a function, which makes statuses of the link aggregation management tables consistent, in each of the plurality of line cards.

Abstract: Disclosed are a PCI-Express multi-node switch assembly and a computer system including the switch assembly. This switch assembly comprises first and second interconnected PCI-Express switches, each of said switches having first and second primary ports and a plurality of secondary ports. The first primary ports of the switches are adapted to be connected to a host processor unit, and the second primary ports of the switches are connected to each other to transfer signals between the switches. In the preferred embodiment, the first primary ports of the switches are connected to first and second nodes of a host processor unit. The first and second switches receive functional traffic from said first and second node, respectively. Also, the first and second switches are able to receive configuration information from the second and first nodes, respectively, over the interconnection between the switches.

Abstract: In one embodiment, the present invention includes an apparatus having a first processor to execute instructions, a subordinate processor coupled to the first processor, and multiple physical devices coupled to the subordinate processor. The physical devices may each correspond to a different network communication protocol, and may each include a physical unit to forward packets to the subordinate processor while the system is in a low power mode. The subordinate processor may remain enabled during the low power mode and may include media access control functionality for handling incoming packets of different physical devices. Other embodiments are described and claimed.

Abstract: A programmable controller includes a CPU (central processing unit) unit; and a communication unit coupled to the CPU unit via an internal bus. Each of the CPU unit and the communication unit provides a TCP/IP protocol. The internal bus is coupled to the internet layer of the CPU unit, and is coupled to the Ethernet driver of the communication unit. The internet layer of the CPU unit has a routing function which routes incoming data to at least one of the Ethernet driver of the CPU unit, or the internal bus, and the Ethernet driver of the communication unit has a switching function which routes incoming data to at least one of the internet layer of the communication unit, or the internal bus.

Abstract: Methods and apparatus for Fibre Channel interconnection is provided between a plurality of private loop devices through a Fibre Channel private loop device interconnect system. In the preferred embodiments, the Fibre Channel private loop device interconnect system is a fabric or an intelligent bridging hub. In one aspect of this invention, a Fibre Channel private loop device is connected to two or more Arbitrated Loops containing, or adapted to contain, one or more private loop devices. Preferably, the interconnect system includes a routing filter to filter incoming Arbitrated Loop physical addresses (ALPAs) to determine which Fibre Channel frames must attempt to be routed through the fabric. Numerous topologies of interconnect systems may be achieved.

Abstract: A connection management device for managing connection mode between node devices in a tree type broadcast system formed by participation of all or a part of a plurality of node devices included in a distributed content storing system where a plurality of content data are distributed and stored in the plurality of node devices and each of the plurality of node devices provides content data stored in the own node through a network in response to a request from the other node devices, to thereby sequentially transfer the content data broadcasted by the broadcasting device from the node devices on upper hierarchies to the node devices on lower hierarchies, the connection management device including: a memorizing device; a participation request information receiving device; a connection target determining device; and a node information transmission device.

Abstract: The invention includes an apparatus and method for switching packets through a switching fabric. The apparatus includes a plurality of input ports and output ports for receiving arriving packets and transmitting departing packets, a switching fabric for switching packets from the input ports to the output ports, and a plurality of schedulers controlling switching of packets through the switching fabric. The switching fabric includes a plurality of virtual output queues associated with a respective plurality of input-output port pairs. One of the schedulers is active during each of a plurality of timeslots. The one of the schedulers active during a current timeslot provides a packet schedule to the switching fabric for switching packets through the switching fabric during the current timeslot.

Abstract: A network interface that provides improved processing of received packets in a networked computer by classifying packets as they are received. Further, both the characteristics used by the network interface to classify packets and the processing performed on those packets once classified may be programmed. The network interface contains multiple receive queues and one type of processing that may be performed is assigning packets to queues based on classification. A network stack within an operating system of the networked computer can route packets classified by the network interface to application level destinations with reduced processing. Additionally, the priority with which packets of certain classifications are processed may be used to allocate processing power to certain types of packets. As a specific example, a computer subjected to a particular type of denial of service attack sometimes called a “SYN attack” may lower the priority of processing SYN packets to reduce the effect of such an attack.

Abstract: In a data packet router, a router fabric card for routing data packets is provided. The router fabric card comprises a plurality of ingress/egress ports, the ports connected through a switching facility for switching connection states of the port paths between individual ingress paths and individual egress paths on the fabric card, and a scheduling component for scheduling communication between ports on the fabric card. Data coming into ingress on the card is organized into individual data-packet trains, each individual train comprising data packets and inserted data denoting a starting point and an ending point of a train. The switching facility recognizes the start data and the end data of a train and switches port paths to a next-assigned connection state accordingly.