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"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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| Number | Title | Issue Date |
| 8111614 | Remote redundant voice server system During normal operation, a user terminal supported by an IP-PBX server establishes a call by resolving the name of the IP-PBX server using a DNS server. When the DNS server provides the address of the IP-PBX server, the IP-PBX server can be contacted. However, if th... | 02/07/2012 |
| 8040795 | Backup path convergence in the APS environment A SONET network terminated by routers includes working paths and backup paths. The routers pre-establishes in their link state data bases the links in both for both the working and backup paths. However, the links involved in the backup paths are given higher costs,... | 10/18/2011 |
| 8031589 | Metropolitan area local access service system A local access fiber optical distribution network is disclosed in which a dedicated pair of diversely routed optical fibers is routed in the distribution network for each customer. In a preferred embodiment, a dual physical overlay ring core topology is used in the ... | 10/04/2011 |
| 8004965 | Redundant packet switching system and system switching method of redundant packet switching system From a time point of last confirmation of operation of the working device 51 until a time point of next confirmation, the standby device 52 receives the same packet as that whose transfer processing is executed by the working device from the interface ... | 08/23/2011 |
| 7957269 | Method and system for synchronization of packet A message synchronization demarcation method includes: a backup board receives a message of an opposite terminal from an interface board; the message is copied to a main board; the main board processes the message, copies it to the backup board through the buffer un... | 06/07/2011 |
| 7952992 | Procedure and mechanisms for control and bearer redundancy of TDM-based service provider connections In a media gateway, a single RTM is placed in bi-directional communication with a active TPM and also in bi-directional communication with a backup TPM. This is accomplished in part by implementation of a signaling and control bus interface between the LIU/Framer ha... | 05/31/2011 |
| 7944814 | Switching between secured media devices A system, method and apparatus for communication is provided which includes maintaining a primary and a secondary network media devices at substantially similar encryption state, wherein the secondary network media device is a redundant network media device. Similar... | 05/17/2011 |
| 7940651 | Momentary-disconnection-free switching device A read address from a memory and a write address to the memory are transmitted from a VT pointer circuit on an active side to a VT pointer circuit on a standby side in order to eliminate a difference between pointer values of the VT pointer circuits on the active an... | 05/10/2011 |
| 7929424 | Switchover for broadband subscriber sessions Methods and apparatuses for process a crossconnect switchover in a network element are described. According to one embodiment, an exemplary method includes synchronizing state information regarding broadband subscriber sessions of one or more circuits of a network e... | 04/19/2011 |
| 7911941 | Scheduling method for executing job, scheduling apparatus for executing job, and commutative recording medium having recorded thereon scheduling program for causing execution of job A router interposed between a subnet and a backbone network, where the subnet includes a plurality of layer 2 switches and a plurality of terminals. The terminals communicate with each other via the layer 2 switches and a master router, wherein the rou... | 03/22/2011 |
| 7889639 | Fiber channel switch and computer system using the same The fiber channel switch is capable of protecting data even if communication for adjusting reserves of access rights, which is performed by communication means, is interrupted. The fiber channel switch comprises: a plurality of connection terminals connected to a ho... | 02/15/2011 |
| 7835270 | Method for managing virtual router redundancy protocol backup groups A method for managing Virtual Router Redundancy Protocol (VRRP) backup groups includes: setting a VRRP Group Management Protocol (VGMP) group including at least one VRRP management group. Each VRRP management group includes at least one VRRP member, and the VRRP mem... | 11/16/2010 |
| 7821922 | Fault isolation and handling in a packet switching network A packet switching network having a plurality of nodes and a network having: a plurality of switches couples to the nodes and links interconnecting ports of the plurality of switches. Each one of the switches has a normal routing table for routing packets from a sou... | 10/26/2010 |
| 7817540 | Method and apparatus for N+1 RF switch with passive working path and active protection path The present disclosure relates an improved cable data switching unit that provides a fail-over system whereby one line card can protect a plurality of US (upstream) or DS (downstream) channel line cards, providing N+1 protection, with one linecard being able to prot... | 10/19/2010 |
| 7817541 | Method and system of providing redundancy in a network device Systems and methods for redundancy in a network device are disclosed. An exemplary device comprises: a controller residing on a data forwarding element (DFE), the DFE performing data forwarding operations; and a first and a second control processor. Each of the cont... | 10/19/2010 |
| 7787364 | Control scheme for standby channel route A control scheme is disclosed for controlling establishment of a standby channel route for an active channel route in a GMPLS network made up of plural transmission apparatuses. The standby channel route is formed by at least one standby channel route transmission a... | 08/31/2010 |
| 7787365 | Routing protocol failover between control units within a network router A device includes a primary control unit and a standby control unit. The standby control unit records routing communications exchanged between the primary control unit and an external routing device in accordance with a routing protocol. A standby routing process ex... | 08/31/2010 |
| 7742402 | Path switching control system, path switching control method and computer system using path switching control Disclosed is a path switching control system for controlling path switching, including: an active path control unit for controlling active paths; a standby path control unit for controlling standby paths; and a path switching control unit being configured in hardwar... | 06/22/2010 |
| 7724653 | Transmission device and redundant configuration between transmission device and layer 2 switch A transmission device is connected to a layer 2 switch through a transmission path at one side, and to a relay transmission path at the other side. The transmission path includes a transmission path of a active system and a transmission path of a stand-by sys... | 05/25/2010 |
| 7719958 | Method and apparatus for enabling multicast over split multilink trunking Multicast traffic may be routed using DVMRP or PIM over a Split MultiLink Trunk (SMLT). Network elements on the split side of the SMLT are interconnected by an Inter-Switch Trunk (IST) to enable them to exchange control messages associated with the multicast. When a... | 05/18/2010 |
| 7719959 | Achieving super-fast convergence of downstream multicast traffic when forwarding connectivity changes between access and distribution switches In one embodiment a switch has active and standby LAYER 2 switch interfaces coupled, respectively, to device interfaces of first and second LAYER 2/LAYER 3 network devices. The active switch interface is configured to forward all egress traffic and accept all ingres... | 05/18/2010 |
| 7697419 | Apparatus and method for managing a set of switches in a computer network An apparatus to manage a set of switches in a computer network is described. In particular, a computer-readable medium to direct a computer network to function in a specified manner is provided. The computer-readable medium comprises instructions to configure a firs... | 04/13/2010 |
| 7656789 | Method, system and storage medium for redundant input/output access A system, method and storage medium for providing redundant I/O access between a plurality of interconnected processor nodes and I/O resources. The method includes determining whether a primary path between the interconnected processor nodes and the I/O resources is... | 02/02/2010 |
| 7652985 | System and method of data transmission and method of selecting communication path for dual-controller system A data transmission system and method and a method of selecting a communication path for a dual-controller system are provided, which are applied in a first controller and a second controller of the dual-controller system. First of all, a corresponding transmission ... | 01/26/2010 |
| 7623444 | Apparatus and method for redundancy control of duplex switch board An apparatus and method for a redundancy control in duplex switch boards in a high speed network system are provided. The apparatus includes: a switching unit for switching data inputted one of the duplex switch boards to a destination line card; a state controlling... | 11/24/2009 |
| 7554903 | Method and system for router redundancy in a wide area network A method for selecting an active router in a communication device includes providing multiple routers in the device, coupling the routers to a single physical link, monitoring a status for each of the routers, and selecting one of the routers as an active router by ... | 06/30/2009 |
| 7486611 | Standby router protocol using optimal route metric Redundant gateway methods, apparatus and systems use more than one gateway device in a gateway device group for communications directed outside of a LAN. Failover services in the event that an active router or other gateway device fails. In determining the priority ... | 02/03/2009 |
| 7457236 | Method for providing fault-tolerant application cluster service A method for providing an application cluster service (APCS) with fault-detection and failure-recovery capabilities. This method is composed of the steps of nodes clustering, invoking and detecting applications, fault-recovery of applications, detection of nodes, an... | 11/25/2008 |
| 7430165 | Wireless communication device and radio communication system using the same A wireless communication apparatus has a current system and a standby system independent of each other. An interface circuit 1a of a radio 10a outputs two signals input from an MUX device 101 as a signal of a current system and a s... | 09/30/2008 |
| 7423962 | Redundancy and load balancing in a telecommunication unit and system The invention relates to backing up a network element (NE) in a telecommunications system. The network element (NE) comprises at least two cluster nodes (A, B, C) that are redundancy units of each other. Each cluster node (A, B, C) contains virtual nodes (a1,... | 09/09/2008 |
| 7421612 | Method and system for optimized switchover of redundant forwarding engines A method of failure recovery in a network element is disclosed. The method includes indicating to a number of forwarding engines that a forwarding engine has completed a switchover operation and causing at least one of the forwarding engines to acknowledge that the ... | 09/02/2008 |
| 7417947 | Routing protocol failover between control units within a network router A device includes a primary control unit and a standby control unit. The standby control unit records routing communications exchanged between the primary control unit and an external routing device in accordance with a routing protocol. A standby routing process ex... | 08/26/2008 |
| 7411945 | Adaptive router architecture enabling efficient internal communication A router comprising a plurality of elements, each having an element identifier, subdivided into a plurality of groups of at least one element. Each group has a common identifier and each member within each group shares redundant capabilities. Each element is capable... | 08/12/2008 |
| 7403474 | Redundant router set up Methods, systems, and devices are provided for redundant router set up. One embodiment of a network device having router functionality includes a processor, memory in communication with the processor, and program instructions. The program instructions can be stored ... | 07/22/2008 |
| 7400575 | Method, system and service for achieving synchronous communication responsive to dynamic status A method for routing a communication connection request includes the steps of obtaining context information from a communication connection requester in response to a communication connection request. The steps further include using the context information to determ... | 07/15/2008 |
| 7397760 | Transmission apparatus A transmission apparatus including: a plurality of asynchronous network interface units each having an asynchronous network termination unit for inputting/outputting a packet from/to an asynchronous networks and a mapping unit for converting the packet into a first ... | 07/08/2008 |
| 7394759 | Method of negotiating an active or a passive role assignment to a control means of a network element, a control means, a program module and a network element therefor The present invention relates to a method of negotiating an active or a passive role assignment to a first and a second control means of a network element. The control means are redundant and operate dependent on their respective active or passive role. The inventio... | 07/01/2008 |
| 7382724 | Automatic switchover mechanism in a network device A system comprises a plurality of processing modules, one of which is designated to be the primary processing module and the others are designated to be secondary processing modules. During operation, state is maintained in the primary processing module and at least... | 06/03/2008 |
| 7373401 | Label switched path OAM wrapper Methods and devices for logically segmenting an LSP so that OAM DTUs may be used to determine the performance and/or the status of LSP segments. To segment a previously determined LSP, a dedicated subpath (a logical LSP) within that predetermined LSP is defined betw... | 05/13/2008 |
| 7373435 | Extended input/output measurement block An Input/output (I/O) measurement block facility is provided that creates subchannel measurement blocks (comprising device busy values) related to performance of an I/O operation of a subchannel, wherein a device busy time value is a sum of time intervals when the s... | 05/13/2008 |
