Employing Logical Addressing For Routing (e.g., Vp Or Vc) Patents (Class 370/399)
  • Patent number: 7400619
    Abstract: A method for sub-port multicasting in an Asynchronous Transfer Mode (ATM) switching system, including inserting multicast fan-out port information for sub-ports of each of a plurality of switch ports into a multicast cell at an ingress port card, transmitting the multicast cell to an egress port card, reading the multicast fan-out port information from the multicast cell at the egress port card, and performing multicasting for the sub-ports corresponding to the multicast fan-out port information.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: July 15, 2008
    Assignee: LG Nortel Co., Ltd.
    Inventor: Jong Ick Lee
  • Patent number: 7391778
    Abstract: A label switching router having an internal channel share function over an asynchronous transfer mode that sets up an internal channel in advance of the external channel and shares it when an external channel needs to be set up, and a method for sharing an internal channel using the same.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: June 24, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kwang-Ho Oh
  • Patent number: 7388863
    Abstract: A communications switch comprising a plurality of numerically identified input traffic ports, a plurality of numerically identified output traffic ports, at least one significant label extractor and at least one numerical processor, the communications switch being arranged whereby each message entering the communication switch by a numerically identified input traffic port contains a header, which header contains a label stack, which label stack includes at least one valid label, of which one valid label is a significant label. The numerical value of the significant label contained within the header of a particular message which entered the communications switch via a particular numerically identified input traffic port is extracted by the at least one significant label extractor and is supplied to one of the at least one numerical processors.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: June 17, 2008
    Assignee: Ericsson Ab
    Inventors: Geoffrey Chopping, Thomas Slade Maddern
  • Publication number: 20080129991
    Abstract: The present invention provides a spectroscopic system as well as a method of autonomous tuning of a spectroscopic system and a corresponding computer program product. By detecting the position of return radiation in a transverse plane of an aperture of a spectroscopic analysis unit, a control signal can be generated that allows to drive servo driven translation or tilting stages of optical components. In this way a transverse misalignment of a spectroscopic system can be effectively detected. Generally, a plurality of different detection schemes are realizable allowing for an autonomous, tuning of the spectroscopic system and for autonomous elimination of misalignment of a spectroscopic system.
    Type: Application
    Filed: August 24, 2005
    Publication date: June 5, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Bernardus Leonardus Gerardus Bakker, Michael Cornelis Van Beek, Gerald Lucassen, Marjolein Van Der Voort, Wouter Harry Jacinth Rensen
  • Patent number: 7382785
    Abstract: An SVC is established via an ATM switch port, which includes multiple virtual paths (VPs), by associating multiple virtual user-to-network interfaces (UNIs) to each of the VPs. Each of the VPs includes multiple virtual circuit (VC) ranges, each of which corresponds to a different virtual UNI. Each VC range includes at least one VC for control and at least one VC for data transfer. Associating the virtual UNIs to each of the VPs includes mapping each virtual UNI to a corresponding VC range within a VP based on a virtual path index (VPI)/virtual channel index (VCI) of the virtual UNI initially received by the ATM switch port.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: June 3, 2008
    Assignee: AT&T Knowledge Ventures, L.P.
    Inventors: Wenge Chen, Peter Chou, Kuo-Hui Liu, Michael P. Sinwald, Shih Chung Soon
  • Publication number: 20080089346
    Abstract: A system for a global concurrent path computation in a communication network is disclosed. The system includes a path computation element communication protocol, wherein the protocol includes an indicator field indicating the global concurrent path computation, a global objective function field providing an overarching objective function, a global constraint field specifying at least one global constraint, a global concurrent vector field specifying at least one path computation request, and another indicator field indicating an outcome of a path computation request.
    Type: Application
    Filed: October 16, 2006
    Publication date: April 17, 2008
    Applicant: FutureWei Technologies, Inc.
    Inventor: Young Lee
  • Patent number: 7359364
    Abstract: A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more trunk lines to a wireless access communication unit. The wireless access communication unit preferably comprises a separate subscriber interface for each trunk line from the central telephone switch. The wireless access communication unit collects data from each of the subscriber interfaces, formats the data into a format compatible with an over-the-air protocol, and transmits the information over one or more wireless channels to a cellular base station. The wireless access communication unit thereby connects calls received from the central telephone switch's trunk lines over a wireless trunk to a network.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: April 15, 2008
    Assignee: Intel Corporation
    Inventors: Albert H. Yuhan, Philip Douglas, Ismail I. Sola, Narayan P. Menon
  • Patent number: 7346066
    Abstract: A method and system provide for using an integrated broadband and narrowband SS7 signaling gateway with M3UA and point code mapping. In general terms one embodiment of the system has: a single physical media carrying at least one bearer path and at least one signaling link, the physical media being operatively connected to a signaling network; and an integrated media and signaling gateway operatively connected to the physical media, the integrated gateway being a termination for both the bearer path and the signaling link.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: March 18, 2008
    Assignee: Lucent Technologies Inc.
    Inventor: Robert J. Nealon
  • Patent number: 7346051
    Abstract: A stacked device is disclosed which is easily manufactured while identifying a plurality of devices that are stacked in the stacked device. The stacked device includes a stack of a plurality of slave devices and a master device having identical terminal arrangements. Here, the master device includes command transmission unit configured to input an identification command to a terminal of an adjacent slave device.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: March 18, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takeshi Nakayama, Eiji Takahashi, Yoshiyuki Saito, Yukihiro Ishimaru, Hideki Iwaki
  • Publication number: 20080043756
    Abstract: A method for changing network configuration parameters that includes generating a request to change a network configuration parameter, where the request is generated by a virtual machine, sending the request to a virtual network interface card (VNIC) associated with the virtual machine, sending the request to a VNIC configuration database associated with the VNIC, determining whether the virtual machine is allowed to change the network configuration parameter, if the virtual machine is allowed to change the network configuration parameter, updating the VNIC configuration database and VNIC to reflect the change in the network configuration parameter, and notifying the virtual machine that the change in network configuration parameter is allowed, and if the virtual machine is not allowed to change the network configuration parameter, dropping the request.
    Type: Application
    Filed: July 20, 2006
    Publication date: February 21, 2008
    Applicant: Sun Microsystems, Inc.
    Inventors: Nicolas G. Droux, Kais Belgaied, Erik Nordmark, Sunay Tripathi
  • Publication number: 20080025309
    Abstract: A technique for multiple path forwarding of label-switched data traffic in a communication network across multiple paths such that traffic associated with a particular label-switched path (LSP) is forwarded on the same path in the network. An incoming label associated with a packet is used to select an Equal Cost Multiple Path (ECMP) technique that is used to identify an interface among a plurality of interfaces on which the packet may be forwarded. An incoming label associated with the packet is used to identify an outgoing label for the packet as well as the plurality of interfaces on which the packet may be forwarded. A label in the packet's label stack is hashed to produce a hash value. The hash value is then used to identify an interface from the plurality of interfaces on which the packet is forwarded. The outgoing label is placed in the packet and the packet is forwarded on the identified interface.
    Type: Application
    Filed: July 31, 2006
    Publication date: January 31, 2008
    Applicant: Cisco Technology, Inc.
    Inventor: George Swallow
  • Patent number: 7324526
    Abstract: To send a connection control message associated with a first set of attributes, only a difference of the first set of attributes from a second set of attributes associated with an already active virtual circuit (to a common destination) may be sent (contained in the connection control message). The devices receiving the message may create the necessary configuration for the new virtual circuit by modifying a copy of the configuration of the active virtual circuit. Processing requirements may be minimized as the devices may not need to parse and decode long list of information element. The feature may be particularly important in setting up a virtual circuit for voice calls, as a long list of attributes may be associated with each virtual circuit, but the difference of attributes being only minimal.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: January 29, 2008
    Assignee: Cisco Technology, Inc.
    Inventors: Hrishikesh Vishwas Kulkarni, Sudhakar Shenoy, Balaji Lakshmikanth Bangolae, Srinivas Ananthanaga Kuruganti, Amit S. Phadnis
  • Patent number: 7313667
    Abstract: Fields of entries are mapped into new values with these mapped values combined into mapped entries for use in lookup operations typically for packet processing. One implementation identifies a list including multiple items each having a first field and a second field. The unique first and second fields of each item are respectively mapped to mapped first and second fields. A first associative memory is programmed with the unique first fields, and a first stage memory is programmed with the mapped first fields at corresponding locations. A second associative memory is programmed with the unique second fields, a second stage memory is programmed with the mapped second fields at corresponding locations. A second stage associative memory is then programmed, using the mapped first and second fields, with entries corresponding to one or more of the original multiple items.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: December 25, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Venkateshwar Rao Pullela, Dileep Kumar Devireddy, Shyamsundar Rao Pullela
  • Patent number: 7310342
    Abstract: The system and method allow Customer Premises Equipment Network Access Devices using ATM as a datalink layer transport, to automatically determine what VC addresses are supported by the remote Network Access Concentrator end of the physical connection. A “divide and conquer” approach is used to ping as quickly as possible the most likely VPI/VCI values. The VC discovery mechanism attempts to discover active VP's and pings only VC's on these VP's. If there are no VP replies, it pings VC's to a limited VCI depth covering the entire VP range. The maximum predetermined range of VC's to ping (MAX-PING) and the physical upstream line speed determines the overall amount of time required by this procedure. Direct benefits of the proposed approach include: time and money saved by not having to customize the firmware in each NAD destined for particular Network Service Providers, and improved end-user experience by providing plug-and-play convenience out of the box.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: December 18, 2007
    Assignee: Dialogic Corporation
    Inventor: Gordon Rouleau
  • Patent number: 7305458
    Abstract: A system and a method for auto-configuring stackable network devices are disclosed for automatically configuring a plurality of stackable network devices. The system for auto-configuring stackable network devices comprises: a configuration file, a command line interface (CLI) component, a switch controller and a topology manger. The method for auto-configuring stackable network devices utilizes the feature that the network device has a unique medium access control (MAC) address, to automatically performing the system configuration.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: December 4, 2007
    Assignee: Accton Technology Corporation
    Inventors: Hong-June Hsue, Yun-Pin Cheng, Ran-Yih Wang
  • Patent number: 7295551
    Abstract: Methods and apparatus for registering a mobile device such as a mobile node or mobile router with a Home Agent in an asymmetric link environment. A Foreign Agent associates each of one or more interfaces of the Foreign Agent with a different care-of address. An agent advertisement including the care-of address for the one or more interfaces of the Foreign Agent is then sent via one or more uplinks. A registration request is received via a downlink router. The registration request identifies a care-of address associated with one of the one or more interfaces of the Foreign Agent. One of the interfaces identified by the care-of address is ascertained, thereby identifying the interface to which the mobile device has roamed. The registration request is forwarded to the Home Agent. A registration reply is received from the Home Agent. The registration reply is then forwarded to the mobile device via the ascertained interface.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: November 13, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Kent K. Leung, Alpesh Sanatbhai Patel
  • Patent number: 7292584
    Abstract: According to the present invention, a switching method and a switching device (3) are disclosed for providing a multilink connection between a subscriber (1) and a network (2), the multilink connection consisting of a plurality of physical connections taken by the subscriber (1). The switching device (3) comprises a plurality of converting means (34, 35) each converting, upon activation, physical connections into a logical connection to the network (2) and converting a logical connection from the network (2) into physical connections.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: November 6, 2007
    Assignee: Nokia Corporation
    Inventors: Jaakko Rautiainen, Petri Saarela, Pentti Toivanen, Arto Maatta, Pekka Multanen
  • Patent number: 7292599
    Abstract: A permanent virtual circuit (PVC) over an ATM network is provisioned by using a deterministic PVC addressing scheme for computing a unique combination of VPI and VCI values based on certain input parameters associated with the network to which the PVC is logically connected. Specifically, the VPI and VCI of a PVC are deterministically computed as a known function of numerical values of particular network elements associated with the network and the particular PVC being provisioned using a function that enables the values of these network elements to be uniquely determined from the VPI and VCI of the PVC. Thus, once the VPI and VCI are determined for a PVC, the particular network elements associated with that PVC can be unambiguously identified from their values.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 6, 2007
    Assignee: Lucent Technologies
    Inventors: Mohammad Riaz Khawer, Paul Lopreiato
  • Patent number: 7289511
    Abstract: A system and method provide enhanced services for a call that is transported from a communication device through an asynchronous transfer mode system. The call has user communications in asynchronous transfer mode cells and call signaling. A signaling processor receives the call signaling and processes the call signaling to determine a connection to a service platform. The signaling processor transports a processor control message designating the selected connection. An asynchronous transfer mode interworking unit receives the user communications from the communication device and the processor control message from the signaling processor. The asynchronous transfer mode interworking unit converts the user communications from the asynchronous transfer mode cells to a format compatible with the service platform and dynamically transports the user communications to the service platform in real time. The service platform processes the user communications.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: October 30, 2007
    Assignee: Sprint Communications Company L.P.
    Inventors: Joseph S. Christie, legal representative, Jean M. Christie, legal representative, Tracy Lee Nelson, Joseph Michael Christie, deceased
  • Patent number: 7269132
    Abstract: Transparent redundancy may be achieved at a MPLS-MPLS hierarchical boundary or a BMA-MPLS hierarchical boundary by utilizing local repair mechanisms extant in each domain to select automatically the same boundary network devices as the primary and secondary boundary network devices. In the MPLS domain, two LERs advertise the ability to forward traffic to a phantom LER and map all traffic originated into that domain as having been on a path originating at the phantom LER. This will cause the LERs to appear as being one hop away from the phantom LER, causing MPLS to assume the real LERs are part of a LSP terminating at the phantom LER. MPLS local repair will thus establish one of the LERs as the primary LER and the other LER as the secondary LER. In an Ethernet domain, each boundary network device is treated analogously to a router in the VRRP scheme for routers.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: September 11, 2007
    Assignee: Nortel Networks, Ltd.
    Inventors: Liam Maurice Casey, David Ian Allan
  • Patent number: 7263593
    Abstract: Embodiments of the present invention are directed to systems and methods of controlling data transfer between a host system and a plurality of storage devices. One embodiment is directed to a virtualization controller for controlling data transfer between a host system and a plurality of storage devices. The virtualization controller comprises a plurality of first ports for connection with the plurality of storage devices each having a storage area to store data; a second port for connection with the host system; a processor; and a memory configured to store volume mapping information which correlates first identification information used by the host system to access a first storage area in one of the storage devices, with second identification information for identifying the first storage area, the correlation being used by the processor to access the first storage area.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: August 28, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoshi Honda, Naoko Iwami, Kazuyoshi Serizawa
  • Patent number: 7248588
    Abstract: A method is disclosed for transmitting data packets in wide area networks (WAN) by way of a synchronous digital data transmission network (SDH), wherein the data packets are packed into synchronous transport modules (STM-N) and are transmitted by way of virtual connections formed by subunits of synchronous transport modules of the same size. The virtual connections are entered into an address table and an evaluation of the target address of the data packets takes place in one of the network elements of the synchronous digital data transmission network. On the basis of the address table and the target address, at least for a part of the data packets, a decision is made by at least one of the network elements of the synchronous digital data transmission network as to which one of the virtual connections is used to transmit this data packet. Furthermore, a network element is disclosed, which operates in accordance with the transmission method.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: July 24, 2007
    Assignee: Alcatel
    Inventor: Volkmar Heuer
  • Patent number: 7249186
    Abstract: A system for identifying a subscriber includes an access server coupled to a number of subscribers using a first communication network and further coupled to a second communication network, a memory coupled to the access server, and a processor coupled to the memory. The access server receives a communication from a particular subscriber using a particular one of a number of virtual circuits associated with the first communication network. The memory stores path information that identifies a virtual circuit assigned to the particular subscriber. The processor identifies the particular subscriber for connection to the second communication network based upon the path information and the particular virtual circuit used to receive the communication from the particular subscriber.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: July 24, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Aravind Sitaraman, Aziz Abdul, Bernard R. James, Dennis J. Cox, John A. Joyce, Peter S. Heitman, Shujin Zhang, Rene T. Tio
  • Patent number: 7222188
    Abstract: A method and apparatus for layer 3 switching packets between locally attached virtual local area networks without using a routing protocol are provided. A learning internetwork switch is connected between a router and a plurality of virtual local area networks. Communications between devices on the virtual local area networks and the router pass through the learning internetwork switch. By inspecting certain packets that flow between the devices and the router, the learning internetwork switch learns the location of the devices without having to use a routing protocol. The learning internetwork switch learns the network layer and the data link layer addresses of the various devices. Once the learning internetwork switch has learned the location, the network layer address and data link layer address of a device, the learning internetwork switch can forward packets between devices on different virtual local area networks using layer 3 switching without involving the router.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: May 22, 2007
    Assignee: Nortel Networks Limited
    Inventors: Steve Ames, Jan Bialkowski, Donal Byrne, Dennis Cave
  • Patent number: 7215674
    Abstract: An edge router receives datagrams to be forwarded an SVC. If the SVC is not already set up, the edge router buffers the datagrams until the SVC set up is complete. The buffered datagrams are forwarded once the SVC set up is complete. According to another aspect of the present invention, different buffering requirements are supported for different user applications. A policy table may be configured by a service provider specifying the requirements associated with potentially each flow (e.g., combination of source/destination IP addresses, source/destination port number), and the datagram on each flow may be buffered accordingly.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 8, 2007
    Assignee: Cisco Technology, Inc.
    Inventors: Pankaj Vyas, Rajeev Govindraj Kolla, Ashoka Kallappa
  • Patent number: 7216175
    Abstract: A system for determining subscriber information includes an access server coupled to a number of subscribers using a communication network, a memory coupled to the access server, and a processor coupled to the memory. The access server receives a communication from a particular subscriber using a particular one of a number of virtual circuits associated with the communication network. The memory stores subscriber information for the subscribers, wherein the subscriber information is indexed by path information that identifies a virtual circuit assigned to the particular subscriber. The processor determines subscriber information for communication to the particular subscriber based upon the path information and the particular virtual circuit used to receive communication from the particular subscriber.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: May 8, 2007
    Assignee: Cisco Systems, Inc.
    Inventors: Aravind Sitaraman, Dennis J. Cox, John A. Joyce, Shujin Zhang
  • Patent number: 7184440
    Abstract: A multi-protocol switch that supports both ATM and IP traffic and method for use is presented. The multi-protocol switch associates certain input connections, as identified by virtual path identifier/virtual connection identifier (VPI/VCI), with either IP or ATM traffic. When the connection identifier for a cell received indicates that the cell is an ATM cell, the multi-protocol switch forwards the cell through the switch, where the forwarding is based on the connection identifier for the cell. If the connection identifier for a cell indicates that the cell is IP traffic, the cell is stored with other cells included in the IP packet to which the cells correspond within the ingress line card of the switch. The destination address included in the packet is used to determine a forwarding decision for the cells included in the packet. After at least partial reassembly, the packet is segmented and forwarded through the switch based on the forwarding decision determined from the destination address.
    Type: Grant
    Filed: July 26, 2000
    Date of Patent: February 27, 2007
    Assignee: Alcatel Canada Inc.
    Inventors: Jason T. Sterne, Thomas E. Davis, Robert E. Robotham, Shay Nahum
  • Patent number: 7177305
    Abstract: The inter-switch interconnect system functions to interface a packet switch with a legacy Time Division Multiplexed switch without requiring any changes to the Time Division Multiplexed switch. The inter-switch interconnect system implements a packet-based call connection system that is triggered by the standard CCS7-ISUP signaling protocol, where the packet-capable Time Division Multiplexed switch controls the set-up and tear-down of the packet connections through the Asynchronous Transfer Mode network to the non-packet-capable Time Division Multiplexed switch using the standard CCS7-ISUP signaling protocol for both incoming and outgoing calls. The packet-capable Time Division Multiplexed switch controls call connections both to and from the legacy non-packet-capable Time Division Multiplexed switch.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: February 13, 2007
    Assignee: Lucent Technologies Inc.
    Inventor: Robert W. Kutter
  • Patent number: 7173940
    Abstract: The present invention relates to a signaling method and a network element for a virtual private network, wherein a request for dropping a signaling of the virtual private network is transmitted from a network element (DXD) to a proceeding network element (DXC), if the network element (DXD) detects that the virtual private network signaling cannot be continued through a connection of the telecommunication network. A predetermined network element (DXB) is provided for transmitting a transparency information indicating a virtual private network signaling transparency to an originating network element (DVA) of the connection in response to the receipt of the dropping request, and the virtual private network signaling is collected at the predetermined network element. (DXB) Thereby, the public network operator is allowed to optimize the VPN signaling load and service provision by arranging the predetermined network element (DXB) at a suitable location in the transmission network.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: February 6, 2007
    Assignee: Nokia Corporation
    Inventor: Pekka Lampola
  • Patent number: 7167477
    Abstract: An apparatus and method for recovering abnormal control cells in an asynchronous transfer mode (ATM) exchange subscriber unit. A signal cell or control cell is transmitted and a plurality of reception first-in first-out memories (FIFOs) are sequentially checked to determine whether a new cell has arrived. If there is no start of cell (SOC) signal in an initial byte of a current cell under the condition that a cell synchronization loss signal is present in the current cell, or if the SOC signal is detected during transfer of the current cell, the current cell is determined to be abnormal. If the cell synchronization loss signal is abnormal, the current cell is discarded and an associated FIFO is fully emptied to recover cell synchronization.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: January 23, 2007
    Assignee: LG-Nortel Co., Ltd.
    Inventor: Ki-Taek Kim
  • Patent number: 7164683
    Abstract: The present invention provides a method (100) for virtual path switching of an ATM cell on a processing communications satellite. The method includes establishing a set of VPIs (104) associated with output ports on the satellite and assigning one VPI to an ATM cell (108). The ATM cell may then be received by an input port of the satellite (110). An associated output port (114) for the ATM cell is determined from the VPI, and the ATM cell is transferred to that output port (116). The present invention may also provide for multicast switching (400). The VPI assigned to the ATM cell may be associated with a multicast output port. The ATM cells may be reproduced (426) and reassigned with a new VPI from a multicast group of VPIs (428). The reproduced cells are received at an input port of the satellite (430) for routing to the corresponding output ports.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: January 16, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: David A. Wright, Michael W. Mann, Aaron D. Falk, Rhon L. Williams
  • Patent number: 7155539
    Abstract: A method for transmitting packets from a network computer onto a network. At least two data sets are received. A priority value is determined for each of the at least two data sets. A composite data set is composed comprising portions of the at least two data sets such that an amount of data from each of the data sets within the composite data set is based upon relative priorities between each of the at least two data sets. The composite data set is transmitted onto the network.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: December 26, 2006
    Assignee: Circadence Corporation
    Inventors: Mark Vange, Glenn Sydney Wilson, Marc Plumb, Michael Kouts
  • Patent number: 7145865
    Abstract: A method for moving permanent virtual circuits in an ATM network with minimal downtime includes creating a list of the permanent virtual circuits to be moved; building a set of shadow permanent virtual circuits using the new ATM port and a temporary set of virtual path identifier and virtual circuit identifier pairs; moving a physical connection from the original ATM port to the new ATM port; deleting the permanent virtual circuits on the original ATM port; and changing the shadow permanent virtual circuits to use the original virtual path identifier and virtual circuit identifier pairs.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: December 5, 2006
    Assignee: BellSouth Intellectual Property Corp.
    Inventors: Earl C. Meggison, Randy S. Young
  • Patent number: 7142555
    Abstract: Data cells arriving in a switching unit are routed to virtual output queues. Load balancing method selects switching elements based on a dynamic utilization tracked by request virtual output queues that store switching requests from the virtual output queues.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: November 28, 2006
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Yuanlong Wang
  • Patent number: 7130270
    Abstract: In a scheduler circuit for a network processor, bandwidth assigned to a virtual path is allocated among virtual channels associated with the virtual path. The allocation of bandwidth among the virtual channels is varied dynamically as virtual channels become active or inactive.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: October 31, 2006
    Assignee: International Business Machines Corporation
    Inventors: Merwin Herscher Alferness, Glen Howard Handlogten, James Francis Mikos, David Alan Norgaard
  • Patent number: 7120728
    Abstract: Placing virtualization agents in the switches which comprise the SAN fabric. Higher level virtualization management functions are provided in an external management server. Conventional HBAs can be utilized in the hosts and storage units. In a first embodiment, a series of HBAs are provided in the switch unit. The HBAs connect to bridge chips and memory controllers to place the frame information in dedicated memory. Routine translation of known destinations is done by the HBA, based on a virtualization table provided by a virtualization CPU. If a frame is not in the table, it is provided to the dedicated RAM. Analysis and manipulation of the frame headers is then done by the CPU, with a new entry being made in the HBA table and the modified frames then redirected by the HBA into the fabric. This can be done in either a standalone switch environment or in combination with other switching components located in a director level switch.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: October 10, 2006
    Assignee: Brocade Communications Systems, Inc.
    Inventors: Shahe H. Krakirian, Richard A. Walter, Subbaro Arumilli, Cirillo Lino Costantino, L. Vincent M. Isip, Subhojit Roy, Naveen S. Maveli, Daniel Ji Yong Park Chung, Stephen D. Elstad, Dennis H. Makishima, Daniel Y. Chung
  • Patent number: 7106747
    Abstract: A network (100) includes multiple gateways (135, 140) and a router (105) connected to at least one of the multiple gateways (135, 140). The router (105) is configured to receive packets that include multiple first virtual circuit identifiers associated with the multiple gateways in the network (100), assign second virtual circuit identifiers to the at least one connected gateway, and initiate transmission of a message to the at least one connected gateway informing the gateway of the first virtual circuit identifiers.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: September 12, 2006
    Assignee: Level 3 Communications, LLC
    Inventor: Robert J. Donaghey
  • Patent number: 7103055
    Abstract: A network switch for network communications, wherein the network switch includes at least one data port interface supporting a plurality of data ports transmitting and receiving data at a first data rate and a second data rate. The at least one data port interface includes an ingress logic circuit in communication with the at least one data port interface for generating at least one of an ingress address resolution and a filtering search request. A CPU interface is provided and configured to communicate with a CPU. A shared hierarchical memory structure including an internal memory in communication with the at least one data port interface, and an external memory in communication with a memory management unit via an external memory interface is provided. A communication channel is provided for communicating data between the at least one data port interface, the internal memory, the CPU interface, and the memory management unit.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: September 5, 2006
    Assignee: Broadcom Corporation
    Inventors: Shiri Kadambi, Mohan Kalkunte, Shekhar Ambe
  • Patent number: 7095745
    Abstract: A communication apparatus is provided which comprises: extraction means for extracting a virtual path identifier and a virtual channel identifier stored in a first header of first cells output from a terminal; preparation means which, based on the extracted virtual path identifier and virtual channel identifier, refers to a conversion table to prepare a second header containing a corresponding identifier; cell generation means for generating second cells containing the prepared second header and the user information of the first cells; multiplexing/generation means for multiplexing the generated second cells so as to have a fixed length, thereby generating third cells; and send means for sending the generated third cells to other communication apparatus through a virtual channel. By virtue of this construction, the usage charge of communication lines, such as ATM lines, can be reduced.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: August 22, 2006
    Assignee: NEC Corporation
    Inventor: Hitoshi Tomizawa
  • Patent number: 7095726
    Abstract: An ATM switching system includes PVC allocation circuits 13-i corresponding to output queues 14-i is disclosed. At the time of arrival of the leading cell of each burst data, if the output line has a room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving cells having the same PVC identification information as the stored identification information are “input to an output buffer, and the cells of the remaining burst data are all discarded. Even when a plurality of burst data compete for the same output line, the fact that all the cells other than the first-arriving admitted burst data are discarded prevents the cells from being input other than within a predetermined bandwidth and localizes the burst data affected by the cell discarding due to output queue overflow.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: August 22, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Takahiko Kozaki, Morihito Miyagi, Manabu Okamoto
  • Patent number: 7068667
    Abstract: A method and system for managing an interconnect fabric that connects nodes. A network manager manages an interconnect fabric or network of routing devices (e.g., interconnect fabric modules, switches, or routers) to allow source nodes to transmit data to destination nodes. The network manager receives registration requests from source nodes to send data to destination nodes, configures the routing devices of the network to establish a path from each source node to its destination node, and provides a virtual address to each source node. The virtual address identifies a path from the source node to the destination node. The source node sends the data to its destination node by providing the data along with the virtual address to a routing device of the network.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: June 27, 2006
    Assignee: The Boeing Company
    Inventors: Michael S. Foster, Michael A. Dorsett
  • Patent number: 7068666
    Abstract: An interconnect fabric module (“IFM”) with high-speed switching capabilities. An interconnect fabric module can be dynamically configured to interconnect its communications ports so that data can be transmitted through the interconnected ports. Multiple interconnect fabric modules can be connected to form an interconnect fabric through which nodes (e.g., computer systems) can be interconnected. In one embodiment, data is transmitted through the interconnect fabric as frames such as those defined by the Fibre Channel and InfiniBand standards. The interconnect fabric module allows the creation of an interconnect fabric that is especially well suited for interconnecting devices utilizing multiple information types such as might be required by the devices of an enterprise data network (“EDN”).
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: June 27, 2006
    Assignee: The Boeing Company
    Inventors: Michael S. Foster, Michael A. Dorsett
  • Patent number: 7046631
    Abstract: There is provided a method for transmitting non-real time traffic in a connection oriented communications network. The network includes a network core that has a source and a destination with a path between them. The non-real time traffic is received at the source from a number of connections and each of the connections is associated with one of many classes of transmission service. The method includes the first step of aggregating at the source the non-real time traffic received from the connections onto the path. The non-real time traffic is transmitted on the path without regard to the connections with which the non-real time traffic is associated. The method includes the second step of segregating at the destination the non-real time traffic so transmitted on the path within the core according to the corresponding connections with which the non-real time traffic is associated.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 16, 2006
    Assignee: Alcatel Canada Inc.
    Inventors: Natalie Giroux, Michael Gassewitz
  • Patent number: 7023846
    Abstract: A system, device, and method for establishing and removing a label switched path in a communication network uses a packet-driven mechanism rather than using an explicit signaling protocol to exchange label switching information from an upstream label switching device to a downstream label switching device. In order to establish a label switched path from the upstream label switching device to the downstream label switching device, the upstream label switching device allocates a new label for the label switched path, sets up the label switched path by adding the new label to its forwarding table, and forwards a labeled packet including the new label and an indicator indicating that the packet is labeled. Upon receiving the labeled packet from the upstream label switching device, the downstream label switching device sets up the label switched path by adding the new label to its forwarding table, and forwards the packet based upon network layer addressing information in the packet.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 4, 2006
    Assignee: Nortel Networks Limited
    Inventors: Loa Andersson, Tove Madsen, Kenneth Sundell
  • Patent number: 7023858
    Abstract: A method and apparatus for managing ATM formatted MPEG SI data in a television set-top box. A virtual channel indicator (VCI) is used to associate a segment of SI data with a virtual channel. An ATM processor receives a stream of ATM packets containing SI data from an out-of-band tuner. The ATM packets include the VCI in a header thereof. The ATM processor stores the SI data in a buffer memory associated with the VCI for retrieval by the ATM processor at the request of the STB system processor.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: April 4, 2006
    Assignees: Sony Corporation, Sony Electronics Inc.
    Inventors: Toshiro Ozawa, David Kimble
  • Patent number: 7020084
    Abstract: A service of reducing the number of tunnels in exchange for a specified service fee. A communication system, which generates tunnels in physical lines and multiplexes a plurality of sessions on the physical lines, comprises a monitor unit for monitoring the state of use of tunnels and sessions used by the user when the user using a plurality of tunnels is a customer who requires service of reserving sessions in a smaller number of tunnels in exchange for a specified service fee; a tunnel/session control unit performs control so as to gather the plurality of sessions of said user in a specified tunnel when the sessions currently used by the user can be reserved in a smaller number of tunnels; and a charging unit for charging a usage rate according to the number of tunnels or the number of physical lines used.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: March 28, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Koji Tanaka, Masahiro Hayashi, Koji Hirayama, Haruo Shibata
  • Patent number: 6996058
    Abstract: An interconnect fabric module (“IFM”) with high-speed switching capabilities. An interconnect fabric module can be dynamically configured to interconnect its communications ports so that data can be transmitted through the interconnected ports. Multiple interconnect fabric modules can be connected to form an interconnect fabric through which nodes (e.g., computer systems) can be interconnected. In one embodiment, data is transmitted through the interconnect fabric as frames such as those defined by the Fiber Channel and InfiniBand standards. The interconnect fabric module allows the creation of an interconnect fabric that is especially well suited for interconnecting devices utilizing multiple information types such as might be required by the devices of an enterprise data network (“EDN”).
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: February 7, 2006
    Assignee: The Boeing Company
    Inventors: Michael S. Foster, Michael A. Dorsett
  • Patent number: 6996109
    Abstract: An ATM cell transmitting device capable of multiplexing a plurality of time slots with a single ATM cell by using an AAL2, which includes a time slot input unit for switching a plurality of time slots; a packet processing unit for receiving the switched time slot data and forming a CPS packet; a CAM for receiving header information of the CPS packet and outputting the ATM buffer number; an ATM cell transmitting unit for storing the data of the CPS packet according to the ATM buffer number outputted from the CAM, to form ATM cells; and a controlling unit for performing a general controlling operation.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: February 7, 2006
    Assignee: LG Electronics Inc.
    Inventor: Myung Soon Choi
  • Patent number: 6990108
    Abstract: The present invention provides a unitary mechanism for high speed end-to-end telecommunication traffic using an Asynchronous Transfer Mode (ATM) architecture for convergence of video, data and voice in an SOHO application using a DSL router. An ATM module (101) for convergence of the telecommunications traffic includes an ATM processor (120) configured to perform QoS, OAM processing and switching in an ATM system. Function modules (102,104,105) and data ports (106,108) are configurable to transceive data, voice and video traffic in which the traffic is packetized in ATM data cells.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: January 24, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Magnus Karlsson, Gregory Lee Christison, Norayda Humphrey
  • Patent number: 6978311
    Abstract: A method of scheduling the handling of data from a plurality of channels. The method includes accumulating data from a plurality of channels by a remote access server, scheduling a processor of the server to handle the accumulated data from at least one first one of the channels, once during a first cycle time, and scheduling the processor to handle the accumulated data from at least one second one of the channels, once during a second cycle time different from the first cycle time.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: December 20, 2005
    Assignee: Surf Communications Solutions, Ltd.
    Inventors: Arnon Netzer, Reuven Moshkovich