Entries |
Document | Title | Date |
20080219246 | System and method for switching using coordinated phase shifters - A switching circuit ( | 09-11-2008 |
20080240089 | Systems and methods for retrieving customer premise equipment data - Methods, systems, and computer readable medium storing a computer executable program for retrieving customer premise equipment (CPE) data are disclosed. A first communication channel is established with a first CPE device via a first node element. The first node element is operable to route data to and from the first CPE device in an Internet network. A request for CPE data is issued to the first CPE device via the first communication channel. The requested CPE data is received from the first CPE device via the first communication channel. | 10-02-2008 |
20080267175 | ACCELERATION OF LABEL DISTRIBUTION PROTOCOL (LDP) SESSION SETUP - In one embodiment, a network device executes a Label Distribution Protocol (LDP) that sends LDP Hello messages at a default rate. The rate of sending LDP Hello messages is modified to accelerate the establishment of an LDP session between the network device and an LDP peer. | 10-30-2008 |
20080317012 | Method and computing system for controlling access - A method and computing system for controlling access by a user to a computing resource located in respective source and destination domains in a hierarchy of domains. The method comprises establishing a path of domains in the hierarchy from the source domain to the destination domain, specifying for at least one domain in the path preceding the destination domain whether traversal to a successive domain in the path is permitted, and providing to the user access to the computing resource if traversal from the source domain to the destination domain along the path is permitted. | 12-25-2008 |
20090034517 | ADVANCED TELECOMMUNICATIONS ROUTER AND CROSSBAR SWITCH CONTROLLER - The invention relates to a crossbar switch controller including an input terminal configured to receive a set of service request signals from a set of virtual output queues each comprising a set of packets. The invention also includes a matrix circuit coupled to the input terminal and configured to represent the set of service request signals in the form of a matrix, wherein each service request signal is described by a row position M and a column position N. The invention further includes an output terminal configured to receive a portion of the set of packets during an epoch, an arbiter circuit configured to iteratively scan the matrix during the epoch and issue the set of grant signals to the virtual output queues to determine which service requests are granted, and an arbiter controller configured to initiate the arbiter circuit with an array of non-conflicting matrix elements. Whereby, the arbiter circuit scans the matrix during a first epoch, issues the set of grant signals, allows the set of granted service requests to substantially complete, and if necessary, scans the matrix during subsequent epochs. The invention also relates to a crossbar switch controller including an arbitration pre-processor coupled to the input terminal and the matrix circuit, and configured to represent the set of service request signals in the form of a mapping matrix, and further configured to transform a first mapping position of the service request signal to a second mapping position based, in part, on a mapping algorithm. The invention also includes an arbitration post-processor coupled to the output terminal and the matrix circuit, and further configured to transform the second mapping position of the service request signal back to the first mapping position. | 02-05-2009 |
20090067418 | Systems and Methods for Communicating Documents Via an Autonomous Multiple-Function Peripheral Device - A multiple-function peripheral device includes a packet-switched network interface and an autonomous application programming interface. The application programming interface requests image information from a remote server via the packet-switched network interface in a first mode of operation. The application programming interface sends image information to a remote device via the packet-switched network interface in a second mode of operation. | 03-12-2009 |
20090129376 | Power distribution system communication system and method - A power distribution system may incorporate a network communication capability. The network communication capability may be configured or may be configurable as a multi-tiered, mesh network. The network may have two tiers of fixed node meshes (tier | 05-21-2009 |
20090219928 | RETURNING DOMAIN IDENTIFICATIONS WITHOUT RECONFIGURATION - In one embodiment, a technique for returning Domain IDs to a Fibre Channel fabric without a full build fabric (BF) phase is provided. A switch in the fabric may send a principal switch a message requesting the return of one or more Domain IDs assigned to that device. The principal switch may update the list of fabric Domain IDs to remove the Domain IDs identified in the message and send the updated list to devices in the fabric. | 09-03-2009 |
20090296697 | Method for verifying shared state synchronization of redundant modules in a high availability network switch - Embodiments of the invention disclose a method of determining the existence of state synchronization between two redundant processing modules operating in a network switch that operates in a manner wherein ordinary network traffic stimuli are autonomously processed through interface and fabric modules, and extraordinary network stimuli are processed from the interface modules to the redundant processing modules, wherein one of the modules is operating actively in the switch and the other is operating in a standby condition whereby state latency exists between the two modules, comprising stopping processing of the extraordinary stimuli to the actively operating processing module, completing processing of stimuli previously received by the actively operating processing module, completing processing of stimuli previously received by the processing module operating in a standby condition, reading the state information of each of the two processing modules, and comparing the state information of said two processing modules to determine if their state information is synchronized, and resuming processing extraordinary stimuli by the actively operating processing module. | 12-03-2009 |
20090316694 | TWO-DIMENSIONAL CIRCULATING SWITCH - A one-dimensional circulating switch may be defined by connections between several switch modules and one or more temporal cyclic rotators. Where a switch module that is part of a first one-dimensional circulating switch is also connected one or more temporal cyclic rotators that define a second one-dimensional circulating switch, a two-dimensional circulating switch is formed. A two-dimensional circulating switch is flexible and may scale to capacities ranging from a few gigabits per second to multiple Petabits per second. | 12-24-2009 |
20100040053 | SYSTEM AND METHOD FOR DYNAMIC MAINTENANCE OF FABRIC SUBSETS IN A NETWORK - A networking device includes a port, and a management module that identifies fabric subsets that include networked devices that can exchange information with each other, detects that a networked device was uncoupled from the networking device, and modifies the fabric subsets. A Fibre Channel switch includes ports, zones and a management module. Each zone includes subsets of devices coupled to the ports, and permits the subset of devices to exchange information with each other. The management module detects when a device becomes uncoupled from a port and automatically updates the zones to restrict the device from exchanging information with other devices. A method includes identifying fabric subsets in a network, selecting a fabric subset that includes networked devices that are permitted to exchange information with each other, detecting that one of the networked devices has become uncoupled from the network, and automatically modifying a portion of the network fabric. | 02-18-2010 |
20100142520 | Mobile Communication Method and System Thereof - A mobile communication method for a mobile originating (MO) side communicating with a mobile terminating (MT) side is disclosed. A first media gateway (MGW) is included in the communication network serving the MO side, and a second MGW is included in the communication network serving the MT side. The mobile communication method includes: after a SETUP message is received from the mobile originating side, determining if the mobile originating side is in Circuit Switching (CS) Domain. If the MO side is under CS domain, determining if the MT side is under CS domain. When the MO side and the MT side are both under CS domain, voice communication signals between the MO side and the MT side are transmitted with CS bearer between the first MGW and the second MGW. | 06-10-2010 |
20100238920 | Communication Apparatus for Providing Services to a Communication Device through a Private Base Station - A communication apparatus provides services to a communication device. The communication apparatus comprises a private base station, such as a Home Node B, for communicating with a communication device authorised to use the private base station and a gateway, such as a Home Node B gateway, communicatively coupled to the private base station for providing access to an IP Multimedia Subsystem, IMS, network and at least one other communication network, such as a Circuit Switched, CS, network. The private base station is arranged to select a route for providing a service to the communication device through the private base station and gateway, the selected route being one of a route between the communication device and the IMS network and a route between the communication device and the at least one other communication network. The private base station is arranged to select a route based on the service to be provided. | 09-23-2010 |
20110032931 | METHOD, SYSTEM, AND DEVICE FOR PROVIDING SERVICE - A method, system, and device for providing a service in the field of communications technologies are provided. The method includes the following steps. A terminal acquires a network instruction. The terminal initiates a call in a Circuit Switched (CS) domain according to the network instruction. The CS domain provides a service according to the received call from the terminal. The system includes a delivery device, user equipment (UE), and a device for providing a service. The UE includes an acquisition module and a processing module. By providing a network entity with enhanced functions (for example, an enhanced Visit Mobile Switch Center (VMSC) and an enhanced Proxy Call Session Control Function (P-CSCF)), the terminal is capable of providing an emergency call service and a monitoring service for a terminal user when a session is established by using an Internet Protocol (IP) Multimeda Subsystem (IMS) CS Control Protocol (ICCP) signaling. | 02-10-2011 |
20110051722 | METHOD, USER EQUIPMENT AND SERVER FOR MULTIMEDIA SESSION TRANSFER - The present invention discloses a method, User Equipment (UE), and server for multimedia session transfer, and relates to a mobile communication technology, and in particular, to a technology for transferring multimedia sessions from a Circuit Switched (CS) network to a Packet Switched (PS) network. The method includes: receiving a session transfer request sent by a UE, where the session transfer request carries a static Session Transfer Identifier (STI); executing a procedure for transferring the active CS session according to the CS session transfer request, and judging whether the UE has a held CS session; and if so, sending the dynamic STI corresponding to the held CS session to the UE so that the UE can send a CS session transfer request again according to the dynamic STI, and receiving the request for transferring the held CS session and executing a procedure for transferring the held CS session. Further, a UE and a server are provided. With the present invention, two multimedia sessions in a CS network of the UE incapable of IMS Centralized Service (ICS) can be transferred to the PS network. | 03-03-2011 |
20110069703 | Method for Selection of a Strategy for Re-Routing of Circuits in a Communication Network and Network with Said Method - A method is described for identification in a communication network of a sequence of circuit movement steps therein to change with the movement of a single circuit at a time from an initial routing in which are satisfied a certain number of service demands to a feasible target routing that satisfies the same service demands with better utilization of the network resources and that is identified as the one which best approximates or identifies a new predetermined desired target routing. In accordance with the method the steps are made of calculating for each demand still to be processed a replacement circuit reducing the cost difference with the circuit that satisfies the same demand in the desired target routing, choosing from among all the calculated replacement circuits the one having less cost and replacing it, marking the corresponding demand as processed, and repeating the steps from the beginning until all the demands have been processed. Then the sequence with which the circuits were replaced is used as a sequence of steps in moving of circuits for re-routing the network. | 03-24-2011 |
20110075660 | DYNAMIC NETWORK SELECTION - The invention relates to a telecommunication system featuring partly CS-based telecommunication and partly PS-based telecommunication. A dynamic controller is provided for making allocations between the parts, taking into account access network requests. A corresponding method and a computer program for implementing the controller are also claimed. | 03-31-2011 |
20110158229 | CLOCKING OF CLIENT SIGNALS OUTPUT FROM AN EGRESS NODE IN A NETWORK - Consistent with the present disclosure, client data, which may include multiplexed data sub-streams, is supplied to an ingress node of a network. Each sub-stream typically has a corresponding data rate, i.e., an original data rate, prior to multiplexing. The client data is encapsulated in a plurality of successive frames that are output from the ingress node and propagate, typically through one or more intermediate nodes, to an egress node. At the egress node, data rates associated with the sub-streams included in each frame are determined based on the amount of client data in each frame. The data rates are then averaged over a given number of frames to thereby filter any wander or deviation in the client data rate. Based on the averaged data rate, justification opportunities are added to the client data in each sub-stream, which are then multiplexed into frames that are output from the egress node. By including the justification opportunities, the effective rate of each sub-stream may be set equal to the original data rate when the sub-streams are demultiplexed after being output from the egress node. An advantage of the present disclosure is that the justification opportunities, are not generated based solely on clock signals generated by PLL circuits. As a result, fewer PLL circuits are required, thereby simplifying system design and minimizing power consumption. | 06-30-2011 |
20110222533 | SWITCH APPARATUS - A switch apparatus includes: a first switch circuit for receiving data from external, sending first data including the received data, and sending second data including the received data after a predetermined time period from sending of the first data; a first controller for outputting the first data received from the first switch circuit; a second controller for outputting the second data received from the first switch circuit; and a second switch circuit for receiving the first data from the first controller and second data received from the second controller, sending the first data to external when the first data is free from an error, and sending the second data to external when the first data has an error and when the second data is free from an error. | 09-15-2011 |
20120082155 | RETURNING DOMAIN IDENTIFICATIONS WITHOUT RECONFIGURATION - In one embodiment, a technique for returning Domain IDs to a Fibre Channel fabric without a full build fabric (BF) phase is provided. A switch in the fabric may send a principal switch a message requesting the return of one or more Domain IDs assigned to that device. The principal switch may update the list of fabric Domain IDs to remove the Domain IDs identified in the message and send the updated list to devices in the fabric. | 04-05-2012 |
20120163374 | METHODS AND APPARATUS FOR PROVIDING UNIQUE MAC ADDRESS TO INDIVIDUAL NODE FOR FIBRE CHANNEL OVER ETHERNET (FCOE) TRAFFIC - In one embodiment, an apparatus can include a filter module operatively coupled to a switching module. The filter module can be configured to define a filter to be applied to a Fibre Channel over Ethernet (FCoE) frame received from any port from multiple ports instantiated at a network device. The filter can be defined based at least in part on a first logical address associated with a first port from the multiple ports. The first logical address can be based at least in part on (1) a first identifier associated with a switch fabric to which the apparatus is operatively coupled and (2) a second identifier associated with a first port from the multiple ports. The filter module can be configured to define the filter such that a switching module sends the FCoE frame to a Fibre Channel device when a second logical address included in the FCoE frame matches the first logical address and the filter module is operatively coupled to the switching module. | 06-28-2012 |
20120207153 | INFORMATION PROCESSING SYSTEM, RELAY DEVICE, AND COMMUNICATION CONTROL METHOD - An information processing system includes information processing devices and relay devices to relay data between the information processing devices, the relay devices each including communication ports, a transmission/reception control unit to cause a first transmission/reception operation and a second transmission/reception operation to be selectively executed, the first transmission/reception operation being an operation in which data is transmitted and received at a first transmission speed, the second transmission/reception operation being an operation in which data is transmitted and received in parallel at a second transmission speed lower than the first transmission speed, and a data division unit to generate pieces of division transmission data whose number is equal to the number of the communication ports by dividing transmission data to cause the generated pieces of division transmission data to be transmitted through the respective communication ports, when the second transmission/reception operation is selected. | 08-16-2012 |
20120218990 | Virtual Port World Wide Names - A network switch allows defining a virtual port worldwide name (VPWWN) and associating the VPWWN with an F_port of the network switch, for use by a host bus adaptor (HBA) connecting to the network switch. Both a default and a user VPWWN may be defined, with the user VPWWN typically taking precedence over the default VPWWN. A database of VPWWN associations may be used to ensure uniqueness of the user VPWWN. Where the HBA allows dynamic assignment of WWNs, the VPWWN may be pushed to the HBA. The VPWWNs may be deleted, and moved to another port as desired. | 08-30-2012 |
20120230325 | FORWARDING INTER-SWITCH CONNECTION (ISC) FRAMES IN A NETWORK-TO-NETWORK INTERCONNECT TOPOLOGY - Systems, mechanisms, apparatuses, and methods are disclosed for forwarding Inter-Switch Connection (ISC) frames in a Network-to-Network Interconnect (NNI) topology, for example, via a network switch which includes a first physical switch port to receive a physical switch link from a second network switch; logic to implement a first logical ISC and a second logical ISC′ connection to the second network switch via the physical switch link; a second physical switch port to receive an interface connection from a third network switch; and switch forwarding logic to forward frames received at the first network switch to the second network switch via the logical ISC or logical ISC′ based on whether or not the physical switch link is part of an active topology upon which the network switch operates or is not part of the active topology upon which the network switch operates. Other embodiments are disclosed. | 09-13-2012 |
20130128884 | SYSTEM TO IMPROVE AN ETHERNET NETWORK - A system to improve a Fibre Channel over Convergence Enhanced Ethernet (FCoCEE) network may include a sender in an FCoCEE network in which data packets having different data link layer structures are transmitted by the sender on a single data link. The system may also include a receiver to receive the data packets at the data link layer and to transmit an ACK and/or NAK in response to a sequence number in the data packets. The system may further include a replay buffer to retransmit the data packets where the replay buffer is sized by the length of the data link, data rate of the data link, the ACK and/or NAK processing time at either the sender and/or the receiver, and/or a threshold time for transmission and/or reception of the data packets. | 05-23-2013 |
20130182704 | PRIORITIZATION AND PREEMPTION OF DATA FRAMES OVER A SWITCHING FABRIC - Network switching and/or routing devices can use multiple priority data streams and queues to support prioritized serial transmission of data from line cards (or the like) through a fabric switch to other line cards (or the like). Preemption logic is used to insert within a data stream commands indicating a switch from one priority level data to another. Delimiter commands and combination switch/delimiter commands can also be used. Multiple crossbars are implemented in the fabric switch to support the various data stream priority levels. | 07-18-2013 |
20130201983 | SWITCH DISCOVERY PROTOCOL FOR A DISTRIBUTED FABRIC SYSTEM - A distributed fabric system comprises a plurality of independent network elements interconnected by inter-switch links and assigned to a same group. Each network element includes one or more switching chips, a processor, and memory storing program code that is executed by the processor. The program code of each network element includes a switch discovery protocol (SDP) module. The SDP module of each network element, when executed, periodically multicasts SDP data units (SDPDUs) using one of a plurality of transmission rates. The plurality of transmission rates includes a fast transmission rate and a slow transmission rate. The transmission rate used by the SDP module of each network element is the fast transmission rate until the SDP module of that network element determines a criterion is met, in response to which the transmission rate used by the SDP module of that network element changes to the slow transmission rate. | 08-08-2013 |
20130279501 | BACKPLANE MODULE - Modules, modular devices, and modular systems are provided. Some examples include a backplane oriented in a first plane, a first module including a major surface oriented parallel to the first plane and a first minor surface oriented perpendicular to the first plane, wherein the major surface of the first module includes a connector thereon that releasably mates with a corresponding connector located on a first side of the backplane. Some examples include a second module including a major surface oriented perpendicular to the first plane and a first minor surface oriented parallel to the first plane, wherein the first minor surface of the second module includes a connector thereon that releasably mates with a corresponding connector located on a second side of the backplane. Circuitry within the first module can provide interconnections for the second module. The first and second modules can be fabric and interface modules, respectively. | 10-24-2013 |
20130287018 | ROUTING AROUND INTRA-NETWORK ELEMENT DISCONNECTIVITY - Routing around intra-network element (intra-NE) disconnectivity is described. The routing is performed on one or more network element (NEs) of a channelized network. The routing involves performing a shortest-path-search (SPS) to determine a shortest non-disconnected path from a single path-ingress edge to a single path-egress edge. The SPS includes classifying a set of endpoints of each NE in the channelized network as an equivalence class of endpoints, classifying a set of paths-so-far between each NE in the channelized network as an equivalence class of paths-so-far, grouping each equivalence class of paths-so-far by the equivalence class of endpoints that includes a terminal endpoint of the path-so-far that is furthest from the single path-ingress edge, and exploring separately each equivalence class of edges that are incident to each NE when determining the shortest non-disconnected path from the single path-ingress edge to the single path-egress edge. | 10-31-2013 |
20130294445 | FLEXIBLE CHANNEL BONDING - The bonding of serial channels to form link bundles is accomplished through the organization of the data to be transferred over the link bundles into superframes of data. Transceivers may be dynamically configured responsive to the recognition of a service of input/output card to be serviced, to act as master or slave in channel bonding situations. Multiple link bundles may be supported, thereby allowing for redundant link bundles. The superframes also provide fields for clock correction sequences, cyclic redundancy checks and specification of an active link bundle in contrast to a redundant link bundle. | 11-07-2013 |
20140169365 | SYSTEMS AND METHODS FOR ROUTING INFORMATION IN AN INFORMATION HANDLING SYSTEM USING EXTENDED L3 LOOKUP TABLES - An information handling system is provided. The information handling system includes a plurality of forwarding processors, the plurality of forwarding processors each including a memory having a forwarding host table and a forwarding route table. The information handling system also includes at least one switching device coupled to the plurality of forwarding processors, the at least one switching device including a memory having a destination module and port table, a switching device host table and a switching device route table, wherein the at least one switching device is configured to perform an extended lookup in at least one of the switching device host table and switching device route table based on values included in a fabric header of information routed to the switching device to determine a destination of the information. A method for extending lookup tables is also provided that adds lookup tables in a switching device. | 06-19-2014 |
20140269686 | VIRTUAL ROUTER AND SWITCH - An input/output (I/O) switch fabric includes input physical ports that convey packets associated with at least a first network flow. Moreover, virtual routers in the I/O switch fabric, which have associated routing tables, provide types of service and/or routes for different source-destination pairs based on link-layer information and network-layer information in the packets. Note that different virtual routers can provide different types of service and/or different routes. For example, a type of service associated with a first virtual router may include changing packet headers when crossing service domains in a global network, and a type of service associated with a second virtual router may avoid changing packet headers when providing connectivity in the network. Furthermore, the I/O switch fabric includes output physical ports that convey packets associated with at least a second network flow. The virtual routers may facilitate InfiniBand inter-subnet crossing. | 09-18-2014 |
20150139223 | HIGH DENSITY NETWORKING SHELF AND SYSTEM - A system, a shelf, and a high density platform optimize physical arrangement of cards to maximize cooling effectiveness and line card pitch while minimizing backplane trace lengths between line interface and switch fabric cards. The shelf and system and associated card arrangement supports scaling to a larger, double size system that maintains the required length of backplane traces for card communications without compromising card cooling. Advantageously, the shelf and system maintains full NEBS compliance through an arrangement supporting full air intake/outtake through a front and/or back of the shelf or system, i.e. no side ventilation, and includes a false front to ensure all cards (switch fabric and line interface cards) are substantially flush with one another. | 05-21-2015 |
20160036728 | METHOD AND SYSTEM FOR VTEP REDUNDANCY IN A MULTICHASSIS LINK AGGREGATION DOMAIN - A method for transmitting MAC frames. The method includes receiving, by a first switch in the MLAG domain, a first media access control (MAC) frame from an external device, wherein the external device is directly connected to the first switch, where the MLAG domain consists of the first switch and the second switch. The method further includes making a first determination that the external device is not a singly-connected external device and based on the first determination, encapsulating the first MAC frame in a first VXLAN frame using a first virtual tunnel endpoint (VTEP), where the first VXLAN frame comprises a virtual VTEP Internet Protocol (IP) address, where the virtual VTEP IP address is associated with the MLAG domain. The method further includes transmitting the first VXLAN frame to an IP fabric, where the first switch is directly connected to the IP fabric. | 02-04-2016 |
20160036733 | PACKET QUEUE DEPTH SORTING SCHEME FOR SWITCH FABRIC - Implementations of the present disclosure involve an apparatus and/or method for an efficient packet queue depth sorting scheme for a ‘longest queue first’ based switch fabric device. In general, the sorting scheme compares a data queue length on an incoming port to a sorted queue of available ports based on longest queue. Based at least on the results of the comparison of the data queue length on the input port, a port designator is inserted into a re-sorted longest queue available port list in the proper position based on the incoming or outgoing port data length. The remaining entries are then sorted around the inserted port designator. Because the comparison and insertion of the port designator can occur in one clock cycle of the switch fabric device, efficiency of the switch is improved. | 02-04-2016 |
20160099870 | SYSTEMS AND METHODS FOR ROUTING INFORMATION IN AN INFORMATION HANDLING SYSTEM USING EXTENDED L3 LOOKUP TABLES - An information handling system is provided. The information handling system includes a plurality of forwarding processors, the plurality of forwarding processors each including a memory having a forwarding host table and a forwarding route table. The information handling system also includes at least one switching device coupled to the plurality of forwarding processors, the at least one switching device including a memory having a destination module and port table, a switching device host table and a switching device route table, wherein the at least one switching device is configured to perform an extended lookup in at least one of the switching device host table and switching device route table based on values included in a fabric header of information routed to the switching device to determine a destination of the information. A method for extending lookup tables is also provided that adds lookup tables in a switching device. | 04-07-2016 |
20160156556 | Network Path Selection Using Bandwidth Prediction | 06-02-2016 |