Fault Recovery

Fault Recovery patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

01/31/08 - 20080025205 - Network segmentation method
A method includes obtaining first information indicative of instability of a data communication network. The method also includes isolating a first portion of a network from a second portion of the network responsive to the obtained first information. After a predetermined period of time, second information indicative of instability of ...

01/31/08 - 20080025204 - Method to utilize physical layer channel state information to improve video quality
A method is provided for improving error recovery of corrupt data packets in a wireless communication system. The method includes: receiving a plurality of incoming data packets over a wireless medium at a receiver; capturing an indicator of bit errors for each of the data packets at a layer of ...

01/10/08 - 20080008086 - Load balancing communication device and load balance management device
In a load balancing communication device and a load balance management device configuring a load balancing system, a storage holds, when the device is a load balancing communication device of a working system, working communication information of the device itself and protection communication information corresponding to working communication information of ...

12/27/07 - 20070297325 - Method and arrangement for arq data transmission
The present invention relates to automatic repeat request (ARQ) in data communication. In the method according to the present invention a sender and a receiver are engaged in wireless communication with each other, wherein the sender is provided with an incoming data stream of a plurality of protocol data units ...

12/13/07 - 20070286068 - Method and arrangement in a telecommunication system
A method and an arrangement for obtaining efficient radio resource utilization in a communication network comprising a first communication network entity (10), a second communication network entity (15) connected to said first communication network over a communication interface and one or more user equipments (18) transmitting data to said second ...

10/18/07 - 20070242603 - Sampling to a next hop
Samples from an addressed data forwarding devices, such as a router, are forwarded to a specified next hop address and/or out a specified next hop interface. However, the sampling and/or next hop forwarding is suppressed if the specified next hop address is unstable or unresolved. ...

10/18/07 - 20070242602 - Blocked redundant link-aware spanning tree protocol enhancement
An exemplary embodiment provides for a method for use in a network device of a plurality of network devices configured to implement a link management protocol for blocking ports corresponding to redundant links between individual network devices of the plurality of network devices. The method is used for preventing delivery ...

10/18/07 - 20070242601 - Networked computer with gateway selection
A networked computer system in which a gateway is selected for efficient transmission over a network using a layered protocol. When a transmission over the network fails, information at multiple protocol layers indicates the usability of the gateway through which the failed transmission was made. In a layered protocol with ...

10/04/07 - 20070230330 - System and method for redundant switched communications
Apparatus, systems, and methods are provided for redundant switched communications among end users in a network. The apparatus includes an interface for coupling to a corresponding end user, a first channel for processing a communication from the end user, a second channel for processing the communication, and a multiplexer coupled ...

09/27/07 - 20070223367 - Adaptive mimo wireless communicationsi system
A GMIMO-JD (Generalized Multiple Input Multiple Output—Joint Detection) method to be executed by a receiver for use in MIMO (Multiple Input Multiple Output) wireless communication systems, comprising: receiving the radio signal sent form a transmitter; estimating the propagation channel quality of the radio signal; sending a feedback information to the ...

09/13/07 - 20070211621 - Information processing apparatus, information processing method, and program
An information processing apparatus is disclosed which connects to a network and which controls transmission to the network of data being output by an external apparatus having at least a data output function. The information processing apparatus includes a connection switcher configured to disconnect from the network in case of ...

08/23/07 - 20070195692 - Systems and methods for obtaining ultra-high data availability and geographic disaster tolerance
Network data storage systems and methods allow computers reading and writing data at a plurality of data centers separated by, potentially, large distances to replicate data between sites such that the data is protected from failures, including complete Site failures, while not allowing network latency to significantly impede the performance ...

08/23/07 - 20070195691 - Self-repair system and method for providing resource failure tolerance
A self-repair system provides resource failure tolerance using an interconnection network that provides interconnection information identifying connections between system resources, redundant resources and ports that are connectable to consumers of the system resources. A controller identifies both defective system resources and the affected sinks connected to the defective system resources ...

08/16/07 - 20070189152 - Method, apparatus, and program for configuring networks with consistent route and bandwidth settings
An apparatus and method for verifying route and bandwidth settings of multiple services provided over networks. The apparatus has an extractor and a verifier. Based on input data describing services each having primary and secondary routes between specific locations, an available bandwidth of each network, and a guaranteed bandwidth of ...

08/09/07 - 20070183313 - System and method for detecting and recovering from virtual switch link failures
A system and method detects and responds to failures occurring in a virtual switch. The virtual switch is formed from two or more physical switches interconnected by a Virtual Switch Link (VSL). One physical switch is elected the Master, and it executes a link aggregation protocol for the virtual switch. ...

07/26/07 - 20070171814 - System and method for preventing loops in the presence of control plane failures
Various systems and methods for preventing loops in the presence of control plane failures are disclosed. For example, one method involves sending a special data packet in response to detection of a break in a network loop and then unblocking a port if the special data packet fails to circumnavigate ...

07/19/07 - 20070165515 - Dynamic protection against failure of a head-end node of one or more te-lsps
A technique dynamically protects against failure of a head-end node of one or more primary Traffic Engineering Label Switched Paths (TE-LSPs) in a computer network. According to the novel technique, a neighboring upstream node (“protecting node”) of the head-end node learns of the primary TE-LSPs (and their respective state control ...

07/12/07 - 20070159960 - Method and apparatus for implementing n-way fast failover in virtualized ethernet adapter
A method, apparatus and computer program product are provided for implementing N-way fast failover in a virtualized Ethernet adapter. Requests are posted to queue pairs (QPs) to send and receive Ethernet packets. Each QP stores a designated physical Ethernet port. At the time of a failover, the stored failed designated ...

07/05/07 - 20070153677 - Method and system for integration of wireless devices with a distributed control system
A method includes determining first and second communication paths from a leaf node of a plurality of leaf nodes to first and second gateway nodes, respectively, of a plurality of gateway nodes. The first and second communication paths may include first and second intermediate nodes, respectively, of a plurality of ...

07/05/07 - 20070153676 - Recovery methods for restoring service in a distributed radio access network
A mobile communication network includes a plurality of access nodes that can serve different roles in support of a communication session with a mobile station. An access node can serve as a connecting node that receives access requests the mobile station, as an anchor node to anchor a radio packet ...

07/05/07 - 20070153675 - Redundant session information for a distributed network
A mobile communication network includes a plurality of access nodes that can serve different roles in support of a communication session with a mobile station. An access node can serve as a connecting node that receives access requests the mobile station, as an anchor node to anchor a radio packet ...

07/05/07 - 20070153674 - Signaling protocol for p-cycle restoration
Improved p-cycle restoration techniques using a signaling protocol are disclosed. For example, a technique for use in at least one node of a data communication network for recovering from a failure, wherein the data communication network includes multiple nodes and multiple links for connecting the multiple nodes, comprises the following ...

06/28/07 - 20070147231 - Path protection method and layer-2 switch
A path protection method is disclosed that is capable of path protection without extra cost and able to improve path switching efficiency. The method includes the steps of associating a virtual network identifier assigned to one or more users with a virtual network identifier for management, the virtual network identifier ...

06/21/07 - 20070140108 - Swapping an operational networked electronic system for a nonoperational networked electronic system
A method of switching a network access configuration associated with a first electronic system to a second electronic system via a network is described. The first electronic system is inoperable. The second electronic system replaces the first electronic system such that a user seamlessly transitions from the first electronic system ...

06/21/07 - 20070140107 - Multicast operations using prioritized state information
A classification mechanism to allow selected classes of multicast entries to be acted upon in a chosen order of priority during multicast distribution tree convergence is provided. Such prioritization allows for the designation of customers, networks or multicast groups to receive faster convergence of multicast distribution trees to modified multicast ...

06/14/07 - 20070133395 - Avoiding deadlocks in performing failovers in communications environments
Deadlocks are avoided in performing failovers in communications environments that include partnered interfaces. An ordered set of steps are performed to failover from one interface of a partnered interface to another interface of the partnered interface such that deadlocks are avoided. ...

06/14/07 - 20070133394 - Communication connection control systems and methods
Communication connection control systems and methods are disclosed. If a control failure recovery function is to be enabled for a data communication connection established by a communication connection controller by communicating control information with a remote controller, an indication that the control failure recovery function is supported at the controller ...

06/07/07 - 20070127364 - System and method for managing network traffic load upon outage of a network node
In one embodiment, a scheme is disclosed for managing network traffic load upon outage of a network node disposed in a wireless packet data network, wherein the network node is adapted to serve a substantially large number of mobile nodes using respective data connections. Upon encountering an outage-causing condition, the ...

06/07/07 - 20070127363 - System and method for managing network traffic load upon outage of a network node
In one embodiment, a scheme is disclosed for managing network traffic load upon outage of a network node disposed in a wireless packet data network, wherein the network node is adapted to serve a substantially large number of mobile nodes using respective data connections. Upon encountering an outage-causing condition, the ...

05/31/07 - 20070121487 - Network element recovery process
A method for recovering circuits of a network element in a communications network includes determining a recovery interval in response to a failure occurring in the network element, and collecting recovery data relating to at least one circuit provisioned in the network element during the recovery interval to support a ...

05/31/07 - 20070121486 - System and method for pe-node protection
A novel fast reroute (FRR) technique is provided for quickly and efficiently rerouting selected types of network traffic in response to a node or link failure at the edge of a computer network. According to the technique, the network includes first and second edge devices that function as “FRR mates,” ...

05/24/07 - 20070115804 - Processing apparatus, processing method, processing program and recording medium
It is the object of the present invention to provide a processing apparatus, processing method, processing program and recording medium capable of reducing the concentration of load upstream in the communication path of a network, and to improve the efficiency of a network system. A processing apparatus in a network ...

05/10/07 - 20070104091 - Apparatus for providing shelf manager having duplicate ethernet port in atca system
An apparatus for providing duplicated shelf managers in an ATCA system is provided. The apparatus for providing duplicated shelf managers includes a hub/switch in a control backplane to allow a manager to access the duplicated shelf managers all the time from an external network while maintaining the switch configuration defined ...

05/10/07 - 20070104090 - Method and system for fast channel change in a docsis set top gateway device
A DOCSIS set-top gateway device uses multiple embedded cable modems so that one eCM can remained tuned to a frequency being used for a current two-way data session and another eCM can be used to tune to a different frequency. The other eCM that tunes to a different frequency is ...

04/26/07 - 20070091789 - Strategies for disseminating media information using redundant network streams
A system is described for disseminating media information. An operations center transmits at least a primary stream on a first network connection and a backup stream on a second network connection to a media device (such as a set-top box). The media device identifies whether the primary stream includes any ...

04/05/07 - 20070076591 - 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 control processors has either an active role or a ...

04/05/07 - 20070076590 - Selecting one of multiple redundant network access points on a node within an industrial process control network
A method and network access point selection logic are described for a redundantly connected industrial LAN node including at least primary and backup network access points. Network connectivity is determined by a redundantly connected node by testing connectivity between the node's primary and backup physical network access points. Upon detecting ...

03/22/07 - 20070064593 - Method and system for automatically resetting a cable access module upon detection of a lock-up
A Cable Access Module is periodically monitored to detect lock-up condition on an upstream channel. Traffic activity on an upstream channel of the CAM is compared to predetermined criteria to determine lock-up. If CMs are detected being coupled to the CAM, a PING message is sent to a group of ...

03/15/07 - 20070058527 - Peripheral setting apparatus and method
A peripheral setting apparatus and method. The peripheral setting apparatus includes a setting information acquiring unit which acquires setting information of a master peripheral that is provided on a network, and a setting unit which sets a new peripheral that is newly provided on the network using the acquired setting ...

03/15/07 - 20070058526 - Protocol definition for software bridge failover
A method, data processing system, and computer usable code are provided for protocol definition for software bridge failover. In a first aspect of the present invention, a first software bridge determines the proper working operation of a physical adapter. Limbo packets are sent to a second software bridge alerting the ...

03/15/07 - 20070058525 - Monitoring a problem condition in a communications system
A solution for monitoring a problem condition in a communications system is provided. A communications protocol implementation monitors the communications system for the problem condition. The communications protocol implementation can initiate a response based on the problem condition being present. In this manner, the communications protocol implementation provides an effective ...

03/08/07 - 20070053283 - Correlation and consolidation of link events to facilitate updating of status of source-destination routes in a multi-path network
In a communications network having a plurality of interconnected nodes adapted to communicate with each other by transmitting packets over links, with more than one path available between source-destination node pairs, a network interface is associated with each node. Each network interface has a plurality of route tables for defining ...

03/01/07 - 20070047435 - Advertising availability for ad-hoc networking based on stored device history
A communication device (110) that includes a wireless adapter (112) and a processor (114). The wireless adapter can communicate via a Bluetooth communications protocol. The processor can determine whether at least a second communication device (130) is identified in a device history list (120). In response to determining that the ...

03/01/07 - 20070047434 - Method for starting lasers in a network
A method for starting lasers in a network is provided. According to the method, a restart phase in automatic mode is initiated after the laser is disconnected. During the restart phase in automatic mode, which is accompanied by a delay time for the new laser connection, the automatic mode is ...

02/22/07 - 20070041314 - Apparatus and method for auto-negotiation in a communcation system
A communication system comprising: a first device; a second device; and communication cabling comprising four twisted wire pairs arranged to enable communication between the first device and the second device; the first and the second devices being operable to perform auto-negotiation on a communication path comprising a first two of ...

02/22/07 - 20070041313 - Apparatus and methods for managing nodes on a fault tolerant network
Devices, systems and methods for managing communications traffic on a fault tolerant network are disclosed. The exemplary system may include a fault tolerant network with at least two nodes and at least two channels of communication. Each channel of communication is in communication with each of the two nodes. Each ...

02/08/07 - 20070030799 - Communication method and system using two or more coding schemes
A communication method includes causing a transmitter to apply error correcting or detecting code systems to multiple frames or packets and to transmit the multiple frames or packets in succession, causing a receiver to receive the transmitted frames or packets and to decode each of the frames or packets received, ...

02/01/07 - 20070025238 - Maintaining services of a network element
A communication network (100) has a network element (102), and a remote controller (104). The network element exchanges data packets with other network elements, and is programmed to store (202) telephony configuration information as updates are made thereto, transmit (210) an operational status to a remote controller monitoring operations of ...

02/01/07 - 20070025237 - Packet communication terminal apparatus and communication system
That is, when the mark M3 has a smiling face, a state in which the packet loss is not occurring is indicated, when the mark M3 has a normal face, a state in which the packet loss has occurred but has substantially no practical problems as the packet is compensated ...

01/18/07 - 20070014234 - Loop prevention system and method in a stackable ethernet switch system
A loop prevention system and method operable in a stackable Ethernet switch system (SESS). In one embodiment, logic is provided for monitoring control management traffic on a stacking port of a stack switch element of the SESS. Also included is logic, operable responsive to determining that there is a loss ...

01/18/07 - 20070014233 - Fault management apparatus and method for identifying cause of fault in communication network
The communication availability information between a plurality of transmitters and a plurality of destinations before the communication state between a transmitter and a destinations in a communication network changes from available to unavailable is compared, layer by layer from an upper layer toward a lower layer, with the communication availability ...

01/18/07 - 20070014232 - Apparatus and method for detecting network failure
A network failure detection apparatus is realized as a function of a terminal in a network. The network failure detection apparatus transmits reachability confirmation packets to a terminal of search object. From a reachability condition decided on the basis of the receiving condition of response packets responding to the reachability ...

01/18/07 - 20070014231 - Router and method for protocol process migration
A router and a method for migrating routing protocol processes or Virtual Routers (VRs) from one Route Processor (RP) to another using graceful restart procedures for maintaining packet flow to the router and assisting the router to obtain restart information. The router includes first and second RPs and a forwarding ...

01/18/07 - 20070014230 - Automatically provisioning a network element
Provisioning a network element of a ring network includes accessing connection data of the network element. The network element includes components, and the connection data includes entries for connections between components. A connection initiation event initiating a change of the connection data is established to have occurred. A first connection ...

01/11/07 - 20070008879 - Binary class based control
The invention allows binary class based control of a communications network and its services. A fault table and a state table are generated. The state table is compared with the state table in response to detecting a change in a state table entry. If the changed state table entry equals ...

01/11/07 - 20070008878 - Method and apparatus for providing faster convergence for redundant sites
A method, apparatus and computer program product for providing convergence for a dual-homed site in a network is presented. An occurrence of a failure between a first Provider Edge (PE) device and a first Customer Edge (CE) device in communication with a dual-homed site is detected. A determination is made ...

01/04/07 - 20070002731 - Intra-node fault recovery within a multi-stage switching architecture
A system, apparatus and method for dynamic intra node rerouting is described. In one embodiment of the invention, a multi-stage architecture within a network node is provided in which various module cards, including intermediary module cards, are interconnected within a chassis. A connection is established between a first module card ...

01/04/07 - 20070002730 - Computer platform system program remote recovery control method and system
A computer platform system program remote recovery control method and system is proposed, which is designed for use with a network system for providing a network-linked computer platform, such as a server, with a remote recovery control function, which is characterized by the utilization of a specific network communication protocol ...

01/04/07 - 20070002729 - Method for optimally deactivating inter-domain routes
The inventive method provides that the failure of a segment, which connects two autonomous systems, is communicated as a segment failure to affected autonomous systems. The autonomous systems informed of the segment failure then deactivate inter-domain routes containing the down segment. After restoring the segment, the routes containing the segment ...

12/21/06 - 20060285487 - Apparatus and method for detecting network failure
The network failure detection apparatus is realized as a function of a terminal in a network. The network failure detection apparatus acquires packet reception statistic information on a port-by-port basis of a relay unit, and extracts a port having a large amount of packet reception per unit time. When there ...

12/21/06 - 20060285486 - Multiple endpoint protection using spvcs
A system and method are provided for a multi-endpoint SPVC, the multi-endpoint SPVC providing redundancy. A primary SPVC is established through a first source node. An intermate communication channel (ICC) is established between the first source node and a second source node. If the primary SPVC fails, the second source ...

12/14/06 - 20060280118 - Communication control method and communication apparatus employing the same
Disclosed is a communication control method for recovering communication failures caused by a packet loop that occurs as a result of L2-level misconnection at relay switches in a communication system where data transmission/reception is carried out between a plurality of end hosts connected to the relay switches within a subnet. ...

12/14/06 - 20060280117 - Redundancy group status management apparatus and methods
Redundancy group status management apparatus and methods are disclosed. Operational status of a standby communication system communication component of a redundancy group is determined by an active component of the redundancy group. The active component transmits operational status information indicating the operational status of the standby component, or an operational ...

12/07/06 - 20060274647 - Dynamic port failover
A network device for selecting a failover port from a trunk group. The network device includes at least one trunk group that includes a plurality of physical ports. The network device is connected to at least one other network device by at least one of the plurality of physical ports. ...

12/07/06 - 20060274646 - Method and apparatus for managing network connection
An apparatus for managing a network connection between different types of networks via a master port includes a failure detecting unit and a master-port switching unit. The failure detecting unit detects a failure in other apparatus based on a frame for determining the master port transmitted from the other apparatus. ...

12/07/06 - 20060274645 - Methods and apparatus for error recovery in opaque networks using encrypted error locations
In response to a failure within a sub-network of a heterogeneous network, an external device is signaled that the failure has occurred by inclusion of an encoded identifier of the failure location with the signaling. The encoded identifier enables identification of the failure location within the sub-network while masking the ...

12/07/06 - 20060274644 - Redundantly connected wireless sensor networking methods
Methods and devices for operating a wireless network including redundant communication. Methods involving redundantly connected nodes are discussed including addressing methods and/or methods of creating groups for such redundant communication. The use of primary and secondary redundant connections is discussed. Also, devices for implementing such methods. ...

12/07/06 - 20060274643 - Protection for wireless devices against false access-point attacks
Mechanisms and methods for providing a mobile/wireless device with protection against false access-point/base-station attacks using MAC address protection are presented. The mobile/wireless device known as mobile client (MC) gains access to wireless network by discovering and selectively associating with an access point (AP). The MAC addresses of both the AP ...

12/07/06 - 20060274642 - Fail open high availability
A system and method for providing high availability for data communications between two data networks. The system comprises at least two network modules for operatively connecting two data networks. Each network module includes a first and a second network interfaces. The network modules are interconnected using the first network interfaces. ...

11/30/06 - 20060268685 - Identifying faulty network components during a network exploration
A network exploration is performed to initialize one or more network elements of the network. If during the network exploration a failure is encountered, a systematic and deterministic approach is used to accurately and particularly identify the faulty network component that caused the failure. ...

11/30/06 - 20060268684 - Solid-state ethernet by-pass switch circuitry
A solid-state Ethernet by-pass switch includes a first connection that accepts transmit and receive lines from a first Ethernet device, a second connection that accepts transmit and receive lines from a second Ethernet device, a third connection that accepts transmit and receive lines from a third Ethernet device and a ...

11/30/06 - 20060268683 - System and method for reallocating bandwidth in a rsvp environment
A communication system includes a call agent that coordinates and supervises communications between endpoints. The call agent allocates a QoS agent for each endpoint involved in a call. The QoS agents generate reservations for the call in order to provide the call with a guaranteed amount of bandwidth and an ...

11/30/06 - 20060268682 - System and method for protecting against failure of a te-lsp tail-end node
A technique protects against failure of a tail-end node of a Traffic Engineering (TE) Label Switched Path (LSP) in a computer network. According to the protection technique, a node along the TE-LSP that is immediately upstream to the protected tail-end node and that is configured to protect the tail-end node ...

11/30/06 - 20060268681 - Multi-homing using controlled route leakage at a backup service provider
A technique is provided for implementing route aggregation in a computer network containing a multi-homed customer site connected to primary and second networks, which in turn are both connected to a common “backbone” network. According to the technique, the primary network allocates a block of network addresses for the customer ...

11/30/06 - 20060268680 - Communication network connection failure protection methods and systems
Communication network connection failure protection methods and systems are disclosed. Control information is communicated in a communication network, and causes network elements of the communication network to establish connection monitoring for respective segments of the network connection. Connection monitoring information which is communicated on the segments allows failures such as ...

11/30/06 - 20060268679 - Local information-based restoration arrangement
A network that is architectured to distributively be responsible for remedying failures achieves advantageous operation. This is accomplished by algorithmically and distributively assigning the responsibility for recovery from all failures to different network nodes and by re-routing traffic at the failed point though network elements in close topological proximity to ...

11/30/06 - 20060268678 - System and method for implementing a mid-call policy in a rsvp environment
A communication system includes a call agent that coordinates and supervises communications between endpoints. The call agent allocates a QoS agent for each endpoint involved in a call. The QoS agents generate reservations for the call in order to provide the call with a guaranteed amount of bandwidth and an ...

11/23/06 - 20060262716 - High availability transport protocol method and apparatus
A system and method supporting efficient, scalable stateful switchover of transport layer connections in a telecommunications network element. One method involves receiving, at a network element comprising an active transport protocol process coupled to a standby protocol process, a request to configure a first transport layer connection maintained at the ...

11/16/06 - 20060256711 - Communication path monitoring system and communication network system
Information that is not dependent on how a GMPLS switch or an MPLS router is set up (information independent of the type of GMPLS switch or MPLS router) is used to obtain attribute values of communication paths and manage communication path configurations in a communication network. Provided is a communication ...

11/16/06 - 20060256710 - Techniques for group alarm indication signal generation and clearing
In a communication system that uses virtually concatenated payloads, techniques to determine when to declare and when to clear alarm indication signal (AIS) for a group. The declaration of AIS for a group may occur based on when declaration of AIS for a member of a group occurs. The clearing ...

11/09/06 - 20060250950 - Data acquisition apparatus and data acquisition method
A data acquisition apparatus acquires data through a network in which nodes are autonomously communicable with each other. The data acquisition apparatus has a storage section and an acquiring section. The storage section stores a table including a physical address indicating a storage location of data possessed by a monitored ...

11/09/06 - 20060250949 - Loss tolerant transmission control protocol
Provided are apparatuses and methods for transmitting or receiving data packets in a data block in a communication network with a transport protocol. In one example, a loss tolerant TCP protocol is used in which a maximum segment size (MSS) may be adapted to a minimum granularity of a congestion ...

11/09/06 - 20060250948 - Dynamic path protection in an optical network
A method and system for dynamic protection of virtual links for paths of an optical network in communication with an IP network are disclosed. The method includes establishing two or more paths within the optical network and grouping the paths in a dynamic bundle. The grouping is selected at a ...

11/09/06 - 20060250947 - Ethernet network implementing redundancy using a single category 5 cable
A method for providing redundancy in a daisy chain local area network employing Category 5 cabling for connecting network devices uses the normally unused twisted wire pairs in the single Cat 5 cable connecting adjacent network devices. The method includes forming in each network device a passive signal path connecting ...

11/09/06 - 20060250946 - Method and apparatus for maintaining active calls during failover of network elements
A method and apparatus for keeping transitory state in a packet network so that in the event of a failover of a network element, existing active calls can be quickly re-established by the packet network or briefly held in a suspended state until the affected network element returns to a ...

11/09/06 - 20060250945 - Method and apparatus for automatically activating standby shared ethernet adapter in a virtual i/o server of a logically-partitioned data processing system
A method, an apparatus, and computer instructions are provided for automatically activating standby shared Ethernet adapter in a Virtual I/O server of a logically-partitioned data processing system. A standby shared Ethernet adapter (SEA) is set up with a virtual Ethernet adapter that belongs to the same network as the primary ...

11/02/06 - 20060245351 - Method, apparatus, and system for improving ethernet ring convergence time
One embodiment in accordance with the invention is a method that includes detecting a failure in a ring network and transmitting a multicast message across the ring network that includes information regarding the failure. Additionally, a new ring master of the ring network is designated. Furthermore, a ring port coupled ...

11/02/06 - 20060245350 - Methods and systems for detecting ip route failure and for dynamically re-routing voip sessions in response to failure
Methods and systems for detecting IP route failure using a request-reply protocol, such as address resolution protocol (ARP), and for dynamically re-routing VoIP sessions in a VoIP device in response to failure of an IP route are disclosed. A plurality of IP routes are established between a first VoIP device ...

10/19/06 - 20060233098 - Method for detecting object collisions in a computer-based game
The present invention is a method for detecting object collisions in a computing device-based game, which includes the steps of: calculating projected times of collision for each of a plurality of objects, the projected times of collision based on the speed and direction of travel of each object; storing the ...

10/12/06 - 20060227702 - Apparatus, system, and method for data tracking
An apparatus, system, and method are disclosed for data tracking and, in particular, for facilitating failure management within an electronic data communication system. The apparatus includes a tracking module and an error analysis module. The tracking module stores an adapter identifier in a tracking array. The adapter identifier corresponds to ...

10/05/06 - 20060221817 - Duplex system
A duplex system has duplicated processor devices. Each of the processor devices has a first copying section which writes data written in a memory of the processor device, into a same address of a memory of the other processor device, a second copying section which divides all data in the ...

10/05/06 - 20060221816 - Transmission device and label allocation method
In a network having a main route and a protection route, a branch node reflects label limit information for the main route into the label limit information for the protection route, and allocates to the main route, a label related to the label for the protection route. On the other ...

10/05/06 - 20060221815 - Failure-monitoring program and load-balancing device
In a method for monitoring servers including destination servers for failure: definition-for-monitoring information including servers to be monitored, a monitoring procedure including a definition of a monitoring packet used in diagnosis of the servers to be monitored, and a criterion for determining normality of the servers to be monitored is ...

10/05/06 - 20060221814 - Line accommodation device and control method thereof
The present invention provides a line accommodation device comprising at least one first communication control unit for controlling information transmission/reception to/from a first communication system, at least one second communication control unit for controlling information transmission/reception to/from a second communication system using the first communication system as a communication medium ...

10/05/06 - 20060221813 - Loop prevention techniques using encapsulation manipulation of ip/mpls field
A fast reroute (FRR) technique is implemented at the edge of a computer network. In accordance with the technique, if an edge device detects a node or link failure that prevents it from communicating with a neighboring routing domain, the edge device reroutes at least some data packets addressed to ...

10/05/06 - 20060221812 - Brownout detection
An apparatus and automatic method for detecting brown-outs in a computer network includes determining normal rates of different types of traffic with respect to defined address prefixes. Thresholds are established based on the normal rates. The rates for the different traffic types are monitored, and when a threshold is exceeded ...

10/05/06 - 20060221811 - Method for providing extra-traffic paths with connection protection in a communication network, related network and computer program product therefor
Extra traffic paths are provided in a communication network including at least two protection channels associated to respective transmission channels. Each protection channel admits an active state for carrying, in the presence of a failure in the associated transmission channel, traffic to be carried by the associated transmission channel, and ...

09/28/06 - 20060215545 - Controlling loss of signal thresholds in an optical receiver
Systems and methods for programming a loss of signal (“LOS”) threshold level relating to the receipt of optical signals by an optical receiver are disclosed. By the present invention, the LOS threshold level can be dynamically programmed and adjusted during operation of the optical receiver according to the data rate ...

09/28/06 - 20060215544 - Packet repeater
A repeater and method provides a technique to minimize congestion and packet loss, which may be generated when a fault is detected in a ring type packet network or when the network recovers from such a fault. A repeater having a plurality of ports for transmitting and receiving packets in ...

09/28/06 - 20060215543 - Method and apparatus for re-routing calls in a packet network during failures
Method and apparatus for re-routing a call in a packet network during failures is described. In one example, a failure condition is detected for a destination endpoint for the call. At least one alternative endpoint address is identified from an alternative routing plan registered with the packet network in response ...

09/21/06 - 20060209679 - Transceiver, optical transmitter, port-based switching method, program, and storage medium
In a transceiver having a plurality of ports, switching is determined on a port basis. A transceiver that is redundantly configured, has a plurality of interface ports, and implements serial communications of switching-control information for each interface port is characterized by including a switching-control circuit for creating the switching-control information ...

09/21/06 - 20060209678 - Replication of static and dynamic databases in network devices
Methods, apparatuses, and systems are presented for replicating data from a first network device to a second network device involving selecting a plurality of data sections containing data accessed by the first network device, systematically assigning at least one replication attribute to each of the plurality of selected data sections, ...

09/21/06 - 20060209677 - Systems and methods of priority failover determination
Systems and methods for implementing priority failover determination are disclosed. An exemplary method includes prioritizing ranking criteria for a plurality of network adapter ports based at least in part on user input. The method also includes determining a ranking value for each of the plurality of network adapter ports based ...

09/21/06 - 20060209676 - Network link backup system
A network link backup system aims to provide network link backup function for electronic equipment (such as a server system, home computer, intelligent home appliance) to maintain normal network operation. The system includes more than one network link module, each including at least one network port, a detection module, a ...

09/21/06 - 20060209675 - Indicating availabiliy status of services provided by a mobile communication network
The present invention relates to an apparatus and method for estimating down link wide-band interference power and noise power in a mobile communications system. By using filters that are matched to the multipath channels of a number of base stations the received powers from the base stations may be differentiated ...

09/14/06 - 20060203717 - System and method transmission of operations, administration and maintenance packets between atm and switching networks upon failures
A system and method of notifying a first communication network of a fault related to a second communication network is provided. The first communication network is connected to the second communication network. The first communication network has a first OAM protocol adapted to monitor integrity of the first communication network ...

09/14/06 - 20060203716 - Error detection and recovery of an optical network element
Error detection and recovery of an optical network element are described herein. In one embodiment, an exemplary process includes, but is not limited to, transmitting from a transmitting module of the optical network element a first packet of data to a receiving module of the optical network element, and the ...

09/14/06 - 20060203715 - Method for redirection of virtual lan network traffic
A method and system to quickly redirect traffic from a server blade to different access switches that provide data communication to a network is presented. Each access switch has external ports directed upstream towards the network, and correlated internal ports directed downstream towards the server blade. The server blade has ...

09/14/06 - 20060203714 - Communication network
In a communication network comprising plurality of devices, each equipped with device operating circuit, communication interface for receiving command signals, control circuit coupled between the device operating circuit and the communication interface for controlling the operation of the device operating circuit part in dependency of said command signals, a control ...

09/07/06 - 20060198296 - Method and apparatus for replicating a transport layer protocol stream
Network connection switchover is accomplished through a method comprising receiving information defining a first connection between a first network device and a computer; establishing a replication channel between the first network device and a backup device; storing backup control information at the backup device; communicating a message flow between the ...

08/31/06 - 20060193248 - Loop prevention technique for mpls using service labels
A local fast reroute (FRR) technique is implemented at the edge of a computer network. In accordance with the technique, if an edge device detects a node or link failure that prevents it from communicating with a neighboring routing domain, the edge device reroutes at least some data packets addressed ...

08/31/06 - 20060193247 - Disaster recovery for active-standby data center using route health and bgp
The present invention provides an active/standby data center that avoids the delay associated with a cached DNS entry to switch from the active data center to the standby data center. When the active data center becomes unavailable, the standby data center advertises the same address as the primary data center ...

08/31/06 - 20060193246 - High service availability ethernet/ip network architecture
The architecture according to the invention is a high service availability Ethernet/IP network architecture, that allows data flows to be conveyed without interruption to service, these flows coexisting with other flows that tolerate interruption to service, and the architecture is characterized in that the network consists of two fault tolerant ...

08/24/06 - 20060187819 - Method and apparatus for constructing a repair path around a non-available component in a data communications network
A method of constructing a repair path around a non-available component in a data communications network having, as components, nodes having a network address and links there between comprises the step, performed at a participating node, of receiving from a notifying node in the network, a notification identifying the notifying ...

08/24/06 - 20060187818 - Method and apparatus for automatic recovery from a failed node concurrent maintenance operation
A method, apparatus, and computer instructions are provided by the present invention to automatically recover from a failed node concurrent maintenance operation. A control logic is provided to send a first test command to processors of a new node. If the first test command is successful, a second test command ...

08/24/06 - 20060187817 - Access control for a packet-oriented network, taking into account resilience requirements
The invention relates to a method for providing resources for adapting the routing process in response to the failure of a network element in a packet-oriented network. Barring checks that use thresholds are provided to control the volume of traffic in the network. Data packets are barred if their routing ...

08/17/06 - 20060182019 - Recovery of state information of a first tunnel end-point
A method for recovering state information of a first tunnel endpoint of a point to point connection between the first tunnel endpoint and a second tunnel endpoint, the state information comprising a first state variable comprising a sequence number for sent messages and a second state variable comprising a sequence ...

08/03/06 - 20060171298 - Methods and systems for dynamic load balancing between call processors
Methods and systems for dynamic load balancing between call processors are disclosed. The call processing load of each of the call processors is monitored in order to determine whether a call processing load balancing exists. In response to determining that a call processing load imbalance exists, call processing tasks relating ...

07/20/06 - 20060159010 - Information processing system, information processing device, and information processing method and program therefor
An information processing system operated by an active system and a standby system can reduce the load of a status synchronizing process. In a pair of an active information processing device and a standby information processing device closest to a transmitting terminal in the information processing system, the standby information ...

07/20/06 - 20060159009 - Fast rerouting apparatus and method for mpls multicast
Disclosed is a fast rerouting apparatus and method for multiprotocol label switching (MPLS) multicast. The fast rerouting apparatus and method is to rapidly cope with a failure occurring on an MPLS network. The fast rerouting method of redirecting a packet to be transmitted at the nearest location from a location ...

07/20/06 - 20060159008 - System and method for monitoring end nodes using ethernet connectivity fault management (cfm) in an access network
A system and method for monitoring end nodes using Ethernet Connectivity Fault Management (CFM) in an access network. In one embodiment, a broadband access server (BRAS) is operable to generate an Ethernet CFM frame that includes a query message with respect to a particular end node. An interworking function (IWF) ...

07/20/06 - 20060159007 - System and method for automatically replacing nodes in a network
A tool is provided for use when replacing devices in an automatically controlled distributed processing system. In one embodiment a network management tool reestablishes all or a portion of the logical connections formerly provided to a bound node where a replacement device is or will be located. The network management ...

07/13/06 - 20060153066 - Virtual path restoration scheme using fast dynamic mesh restoration in an optical network
A method for restoring a virtual path, provisioned between a source and a target node, in a mesh zoned optical network is described. The method, in one embodiment, broadcasts or floods restore path requests in the network to expedite the identification of an alternate route and minimize the service disruption ...

07/13/06 - 20060153065 - Point-of-sales terminal, failure information display method and failure information display program
According to the present invention, information is provided about the result of determination of whether or not a detected failure is a failure which can be responded to, based on comparison between the failure level of the detected failure and a failure response level which has been arbitrarily set. This ...

07/13/06 - 20060153064 - System and method for storing and restoring communication dialog
Storing and restoring a communication session includes establishing a communication session by exchanging dialog. Dialog from the communication session is stored to a persistent storage. Endpoints participate in the communication session to assert functionality to a monitoring module. If a failure occurs during the communication session, an endpoint receives the ...

07/13/06 - 20060153063 - Mobile ip registration process for always-on device
A system and method for an automatic retry method during initial registration and re-registration of a mobile device on a mobile Internet Protocol (MIP) network is provided. The mobile device is adapted to categorise a registration response (RRP) code and accordingly determine a course of action. By reacting intelligently to ...

07/06/06 - 20060146695 - Terminal based packet loss due to mobility detection
The invention proposes a method for controlling a packet transmission between a sender and a receiver sent via a packet transport protocol, the receiver being a mobile network element, comprising the steps of detecting whether a mobility event has occurred, detecting whether a downlink packet loss has occurred, and providing, ...

07/06/06 - 20060146694 - Program and method for verifying reliability of network
A reliability verification program that enables network administrators to verify the redundancy of a system that they operate. With reference to network configuration data describing physical connections of a network system, the program selects a source device and a destination device as a start point and an end point of ...

06/29/06 - 20060140111 - Method and apparatus to compute local repair paths taking into account link resources and attributes
A technique for calculating local repair paths through a computer network using one or more dynamically measured parameters in place of, or in addition to, statically assigned cost metrics. The dynamically measured parameters include various statistical measures of resources and attributes associated with data links and/or network nodes in the ...

06/22/06 - 20060133264 - Trunk network system for multipoint-to-multipoint relay
In a trunk network, each node, when notified from another node of a change in the state of a group to which external connection ports belong, changes the states of the external connection ports to cause external devices to detect the failure of the transmission route. A port state monitor ...

06/15/06 - 20060126498 - Method for operating a network having a ring topology
A method for operating a network having a ring topology, in which a faulty connection between two stations of the network is detected by monitoring carrier signals. This method enables a faulty connection to be quickly detected in a network. Data may be advantageously rerouted in response to the detection. ...

06/15/06 - 20060126497 - Re-transmitting packet of polling-based wireless local area network (wlan)
A method of re-transmitting a packet of an access point (AP) in a polling-based Wireless Local Area Network (WLAN) includes: scheduling a super frame to form a first period of providing a polling message to arbitrary stations at the AP and allowing only stations receiving the polling message to get ...

06/15/06 - 20060126496 - Fast reroute (frr) protection at the edge of a rfc 2547 network
A fast reroute (FRR) technique that may be deployed at the edge of a network having first and second edge devices coupled to a neighboring routing domain. If the first edge device detects a node or link failure that prevents it from communicating with the neighboring domain, the first edge ...

06/15/06 - 20060126495 - System and methods for detecting network failure
A path verification protocol (PVP) which enumerates a series of messages sent to a set of nodes, or routers, along a suspected path identifies forwarding plane problems for effecting changes at the control plane level. The messages include a command requesting interrogation of a further remote node for obtaining information ...

06/08/06 - 20060120277 - Combination dolly and cart
A combination cart is disclosed. The combination cart includes a box for hauling a load. The box includes a bottom portion having four sides, and at least three wall portions attached to the bottom portion and extending perpendicularly outward from the bottom section. An axle is attached to the bottom ...

06/08/06 - 20060120276 - Apparatus for protecting low/high order traffic boards in a synchronous digital hierarchy transmission device
The present invention relates to an apparatus for protecting low/high order traffic boards in a synchronous digital hierarchy transmission device, comprising a spare low/high order traffic board arranged at said low/high order traffic region; a set of low/high order protection buses, arranged in said backboard of said synchronous digital hierarchy ...

06/01/06 - 20060114818 - Restoration in a telecommunication network
A method is described for calculating a backup connection for restoring a nominal connection in a telecommunication network. The method performs the calculation of the backup connection taking into account updated values of parameters indicating at least one dynamic feature of a group of segments of the network. The dynamic ...

06/01/06 - 20060114817 - Server, method for controlling data communication of server, computer product
A server includes a plurality of information processing units that respectively have a central processing unit and a memory, and that perform respective information processings in parallel; a setting-information receiving unit that receives setting information that indicates whether data communication can be performed among the information processing units; and a ...

05/25/06 - 20060109782 - 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 unit for controlling a clock state ...

05/18/06 - 20060104200 - Terminal for automatically changing operating mode and wireless network system having the same, and method thereof
A terminal for automatically changing a communication mode, a wireless network system having the same, and a method thereof are disclosed. The terminal comprises a wireless communication module for communicating with a corresponding terminal through an access point connected to a communication infrastructure. The terminal further comprising a first memory ...

05/18/06 - 20060104199 - Minimizing single points of failure in paths with mixed protection schemes
Methods and apparatus for substantially minimizing single points of failure for circuit paths in networks with mixed protection schemes are disclosed. According to one aspect of the present invention, a method for routing circuit paths between a source and a destination of a network includes identifying a first available circuit ...

05/04/06 - 20060092829 - Architecture for a hybrid stm/atm add-drop multiplexer
Architecture for a SONET network element. The architecture includes an interconnection system for a network element, including a line unit slot, a switch fabric slot, and service unit slots. The line unit slot is connected as a hub to the switch fabric slot and the service unit slots in a ...

05/04/06 - 20060092828 - Information processing system and access method
A plurality of logical units are set in an information processing device and a storage device and connected by logical paths. The information processing device monitors the path state. When a state change of a path has occurred, the information processing device searches for a normal path connected to the ...

05/04/06 - 20060092827 - Multi-interface port management
The present embodiments of the invention provide systems and methods for managing forwarding devices that support hybrid multi-interface ports. This type of device supports a plurality of physical ports, with each port supporting a plurality of interface media. The interface media supported in each port may be of varying media ...

05/04/06 - 20060092826 - Automatic system for power and data redundancy in a wired data telecommunications network
Redundancy of data and/or Inline Power in a wired data telecommunications network from a pair of power sourcing equipment (PSE) devices via an automatic selection device is provided by providing redundant signaling to/from each of the pair of PSE devices, and coupling a port of one PSE device and a ...

04/27/06 - 20060087962 - Fault tolerant network architecture
A fault tolerant network architecture employs a network node including a first network interface to an addressable network. The first network interface is assigned a first network interface IP address defined by a first IP address range. The network node also includes at least one virtual IP address defined by ...

04/20/06 - 20060083162 - Failure tolerant high density dial router
A Fault Tolerant Dial Router (FTDR) includes redundant subsystem resources that operate independently of telephone line interface connections. The redundant resources are switched active when a failure is detected in an activated dial router subsystem. Switching out subsystem failures is fully automated under software control, providing uninterrupted service to users ...

04/13/06 - 20060077890 - Efficient source blocking algorithm for fec for mbms streaming
A hybrid-padding approach for arranging variable size data packets for error correction encoding and decoding is disclosed. The approach can involve arranging the data packets in columns and rows and selecting the row size to minimize the amount of padding required. If data packet is smaller than the number of ...

04/13/06 - 20060077889 - Effect analysis apparatus for analyzing network failure
Information is generated for indicating a virtual path and a line both of which are housed by each real path constituting the communication network, by regarding each of a plurality of routes as a virtual path, and virtual paths housed by a real path which is affected by a network ...

04/13/06 - 20060077888 - Redundant power and data in a wired data telecommunincations network
Redundancy of data and/or inline power in a wired data telecommunications network from a pair of network devices via a selection device is provided by communicating redundant signals with each of the pair of network devices and coupling ports of the first network device and corresponding ports of the second ...

03/30/06 - 20060067209 - Universal configurable device gateway
A method and an apparatus for providing a configurable, object-oriented, protocol-neutral interface between a physical device and a server. The method includes coupling an application gateway with the physical device, where the application gateway includes a protocol gateway module configured for physical communication with the physical device, and an object ...

03/30/06 - 20060067208 - Method and device for medium-redundant operation of a terminal in a network
The invention relates to a method and device for medium-redundant operation of a terminal in a network. The device comprises: a first transmission device (6) of a physical bit transmission plane which is connected to a network component (9) via a first connection medium (8) disposed between the first transmission ...

03/23/06 - 20060062141 - Method and apparatus for fast failure detection in switched lan networks
A switch detects port failures and identifies a MAC address associated with the port failure. The switch then sends a failure notification message to other ports on the switch that identifies the MAC address associated with the port failure. The network processing devices on the other ports use the failure ...

03/16/06 - 20060056286 - Method for protecting and restoring link using optical label merging and dynamic resource sharing with network load
Disclosed herein is a method for protecting and restoring a link in an OBS network. The method includes a step of transmitting/receiving a liveness-confirming message for confirming liveness of the link between an up-node and a down-node respectively connected to both ends of the link at a predetermined message transmission ...

03/16/06 - 20060056285 - Configuring redundancy in a supervisory process control system
A redundant host pair runtime arrangement is disclosed for a process control network environment. The environment includes a primary network through which process control information is transmitted. An active partner of a fail-over host pair operates on a first machine communicatively connected to the primary network, and the active partner ...

03/16/06 - 20060056284 - Secure fallback network device
A network device may provide secure fallback operations. The device includes a port allowing the device to communicate with a network and a processor to generate a security credential, provide the security credential to a call manager during initialization, and provide the security credential to a secondary device during fallback ...

03/09/06 - 20060050630 - Storage network management server, storage network managing method, storage network managing program, and storage network management system
In a system which manages path information and status of network with respect to a path being used for access to a storage apparatus and has a redundant path, when a fault occurs in the network, whether or not the path can be recovered by rerouting in network apparatuses is ...

03/09/06 - 20060050629 - Fail over method and a computing system having fail over function
Loads on a plurality of computers are made uniform after a fail over, and resource competition is prevented. Loads of nodes (1 to 4) in a cluster (100) are obtained, taking-over information when a trouble occurs in one of the plurality of nodes (1 to 4) is generated beforehand based ...

03/09/06 - 20060050628 - Mobile network control device and mobile network control method
A mobile network control apparatus capable of improving transmission efficiency without giving any processing loads to nodes of a mobile network. In mobile routers 121, 131, 132 to which the present apparatus is applied, a tunnel failure detection unit 204 detects a failure of packet tunneling executed using an interface ...

03/02/06 - 20060045005 - Failover mechanisms in rdma operations
In remote direct memory access transfers in a multinode data processing system in which the nodes communicate with one another through communication adapters coupled to a switch or network, failures in the nodes or in the communication adapters can produce the phenomenon known as trickle traffic, which is data that ...

03/02/06 - 20060045004 - Method for diverting data packets when local link failures are identified
According to said method, routing information or a list of routing information is inserted or modified in the packet header of data packets, in response to a malfunction of the packet network, in order to avoid defective nodes or links. The data packets with modified headers are routed using the ...

02/09/06 - 20060028978 - Method and apparatus for continuous operation of a point-of-sale system during a single point-of-failure
A computer network includes servers, controllers, and a plurality of workstations. The servers and controllers are coupled by Ethernet and secondary communication links. The workstations are serially coupled with the controllers. In this network, each server and controller acts as a failsafe and is adapted to assume the functionality of ...

02/02/06 - 20060023625 - Multi-node system, internodal crossbar switch, node and medium embodying program
A multi-node system for making the data transfer between nodes via each internodal crossbar switch comprises a plurality of internodal crossbar switches having a switch for transmitting the transfer data from a plurality of nodes to the node of transfer destination. If a fault occurs in the switch, the system ...

01/26/06 - 20060018254 - Statistical multiplexer having protective features from extraneous messages generated by redundant system elements
A statistical multiplexer is provided for multiplexing at least two bit streams, which each comprise video signals, into a single multiplexed encoded bit stream. The statistical multiplexer includes a plurality of primary encoders 120 each receiving one of the bit streams and generating an encoded bit stream and at least ...

01/26/06 - 20060018253 - System and method for preserving multicast data forwarding during control failures in a router
A multicast non-stop forwarding (NSF) router architecture enhances high availability of a multicast router in a computer network. The router architecture further preserves multicast data forwarding through a data plane during NSF recovery of one or more failures in a control plane of the router. Various multicast components of the ...

01/26/06 - 20060018252 - Load balancing in a virtual private network
A network system (10). The system comprises a plurality of nodes (PE, CE). Each node in the plurality of nodes is coupled to communicate with at least one other node in the plurality of nodes. Further, each node in the plurality of nodes is coupled to communicate to another node ...

01/19/06 - 20060013124 - Module firmware recovery
A network access server (NAS) for use in a communications system utilized by users of telephone, fax, or modem calls, the NAS having more than one processor with a plurality of processors forming a module, each processor for performing various functions by executing code stored in memory device accessible by ...

01/19/06 - 20060013123 - Method and apparatus for processing transmission error in dmb system
Provided are a method and apparatus for detecting and processing transmission errors of various types of data which are transmitted in MPEG-2 transport streams. The transmission error processing method includes: detecting an error for an individual PES (packetized elementary stream) after detecting transmission error information from a received MPEG-2 transport ...

01/19/06 - 20060013122 - Method and apparatus for recovering a communications connection
A method and apparatus for recovering a communications connection by storing a state variable that pertains to the status of a connection. When there is a need to restore the connection, the state variable is retrieved and used to restore the state of a protocol stack. ...

01/12/06 - 20060007853 - Bus systems, apparatuses, and methods of operating a bus
Data transmission between transmitting/receiving nodes in a bus system may be controlled based on an error check of received data. When an error in the received data is detected, the transmitting node may cease data transmission, and other nodes, which may not have detected the error, may be notified of ...

01/12/06 - 20060007852 - Method for permanent redundant transmission of data messages in communication systems
The method carrying out permanent redundant transmission of data messages in disjunctive paths, such that circulating data messages can be reliably identified and destroyed. The method includes splitting a redundant message into two data messages in the respective branching point in a transparent manner. The method further includes causing no ...

01/12/06 - 20060007851 - Rapid protocol failure detection
A method is disclosed for rapidly detecting a protocol failure. In one embodiment, the method includes receiving an indication that a first process has failed. The first process having been engaged in communications over one or more network connections with a second process. A packet is formed, such that the ...

01/05/06 - 20060002289 - Faults and status in virtual private networks
A method embodiment for determining status of a private virtual network is disclosed. The method comprising classifying reachability faults of a virtual routing address into a plurality of first levels; classifying infrastructure faults of the virtual routing address into a plurality of second levels; and determining the status of the ...

12/29/05 - 20050286414 - Method and apparatus for identifying components of a network having high importance for network integrity
A computer system (2) is provided which is arranged to receive network data (1) identifying nodes and links between nodes. The computer system (2) processes the input network data (1) to utilise the network topology to identify nodes and links having high importance for network integrity. A report (4) identify ...

12/29/05 - 20050286413 - Handling link failures with re-tagging
One embodiment disclosed relates to a method of handling link failures between switches. A failed link is detected at a detecting switch. The detecting switch determines a set of path tags whose paths are affected by the failed link. Subsequently, when packets are received with one of the path tags ...

12/29/05 - 20050286412 - Transient notification system
A transient notification system is described. In one implementation, a Border Gateway Protocol (BGP) speaker receives a transience notification message identifying a route in a network that is no longer valid. The BGP speaker marks the route indicated by the transient notification message as not valid, and avoids using the ...

12/29/05 - 20050286411 - Method and apparatus for designing networks to support fast restoration
Improved network design techniques are provided. More particularly, the invention provides network design techniques that support fast restoration. In one aspect of the invention, a technique for designing a protection capacity to be reserved in a network comprises the following steps/operations. Link capacities associated with a network topology and existing ...

12/29/05 - 20050286410 - Link adaptation
The present invention discloses an apparatus and method for adapting a transmission parameter in a transmitting node of a data communication system to the current link quality of a data communication channel. The adapted transmission parameter is selected by the transmitting node from a set of transmission parameters in dependence ...

12/22/05 - 20050281191 - Monitoring path connectivity between teamed network resources of a computer system and a core network
A computer system monitors connectivity between a core network and two or more paths comprising a contiguous local area network segment. Each of the two or more paths couple at least one member of a team of network resources of the computer system to the core network. Each of the ...

12/22/05 - 20050281190 - Automated recovery from a split segment condition in a layer2 network for teamed network resources of a computer systerm
A computer system automatically recovers from a split segment condition in which a contiguous layer 2 network segment, comprising a plurality of contiguous paths each directly coupling one or more members of a team of network resources of the computer system to a core switch of a layer 2 network, ...

12/15/05 - 20050276214 - Fault isolation in a network
A system to isolate a fault to a particular port from among multiple ports in a network. The network typically has a plurality of devices including hosts, storage units, and switch groups that intercommunicate via transceivers. A fault indication is received from one or more of the devices in the ...

12/08/05 - 20050270972 - Efficient and robust routing of potentially-variable traffic for path restoration following link failure
A method for supporting recovery from failure of a path in a network of nodes interconnected by links comprises: (a) selecting an intermediate node between an ingress point and an egress point of the network, wherein the intermediate node minimizes the sum of (i) a capacity constraint between the ingress ...

12/08/05 - 20050270971 - Method of managing malfunctions at router level, and a router
This method of managing malfunctions in a telecommunications network is implemented in a router having a plurality of communication interfaces and a nominal operational routing plan that is duplicated on its interfaces. The method comprises the following steps that are performed during nominal operation: a step of calculating a secondary ...

12/08/05 - 20050270970 - Failsafe service oriented architecture
A system, method and media for a service oriented architecture. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects and objects of the invention can be obtained from a review of the specification, the figures and the claims. ...

12/01/05 - 20050265229 - Techniques to provide increased voltage swings in oscillators
Briefly, an oscillator device with impedance elements to prevent premature improper biasing of transistor nodes and to increase the maximum possible peak-to-peak signal swing. ...

12/01/05 - 20050265228 - Automatic protection switching using link-level redundancy supporting multi-protocol label switching
A computer network has a plurality of routers that deliver data packets to the network via a plurality of links. At least one router provides automatic protection switching in the event of a link failure. The at least one router includes a plurality of data interfaces for streams of data ...

11/24/05 - 20050259570 - Fault recovery method and program therefor
When there occurs a fault in any path of the MPLS or GMPLS network, a node which has detected the fault sends a notify message which is fault event information. A node which performs fault recovery receives the notify message (S1) and counting of the waiting time is triggered by ...

11/17/05 - 20050254417 - Method for fast recovery from ring protection switches on docsis networks
The range delay of each of a plurality of user devices of an HFC is monitored. If the delay of a number of devices shifts by about the same amount and at about the same time, then the number of devices having such a shift is compared to a predetermined ...

11/10/05 - 20050249112 - Failsafe transmission of data
The invention relates to a system and a method for the failsafe transmission of data, the system having at least one component (2, 6, 7), which is enhanced for the failsafe transmission of data. To allow the failsafe transmission of data with reduced hardware outlay, it is proposed according to ...

11/03/05 - 20050243714 - Redundant packet selection and manipulation in wireless communications systems
A communications system includes a mobile unit that transmits content and a number of base transceiver stations that receive the content from the mobile unit. Each base transceiver station determines a value for a metric associated with communications between the mobile unit and the base transceiver station, generates a graded ...

11/03/05 - 20050243713 - Node-redundancy control method and node-redundancy control apparatus
A first transmitting unit copies information received from a node, and transmits the information to each of a plurality of nodes of a next-stage group via an active line and at least one backup line. A receiving unit receives the information via the active line and the backup lines, and ...

11/03/05 - 20050243712 - Electronic device protection systems and methods
Protection systems and methods for electronic devices including at least one communication line interface are disclosed. A switch connected to each interface and a working communication path in an electronic device is adapted for connection to a protection communication path and controllable to connect each interface to either the working ...

11/03/05 - 20050243711 - Method and apparatus for pre-provisioning networks to support fast restoration with minimum overbuild
Improved network design techniques are provided. More particularly, the invention provides network design techniques for pre-provisioning networks to support fast restoration with minimum overbuild. In one aspect of the invention, a technique for designing a protection capacity to be reserved in a network comprises the following steps/operations. One or more ...

11/03/05 - 20050243710 - Fault-tolerant broadcast router
A fault-tolerant router first and second router matrix card. The first and second router matrix cards receive a common set of 4n parity encoded input digital audio data streams and respectively generates therefrom, first and second sets of M output digital audio streams. As the first and second sets of ...

10/27/05 - 20050237927 - Transmission apparatus
A transmission apparatus which can enhance the transmission quality and reliability by establishing a recovery-path efficiently at a high speed for failure circumvention. A recovery-path request message control block generates, sends, and receives a recovery-path request message containing failure location information and recovery-path setup information. A label assignment message control ...

10/27/05 - 20050237926 - 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, and node replacement. This method is applicable in a clustered environment to detect if a slave ...

10/27/05 - 20050237925 - Method and system for automatically rerouting logical circuit data from a logical circuit failure to dedicated backup circuit in a data network
A method and system are provided for automatically rerouting logical circuit data from a physical circuit failure in a data network. When a failure in a logical circuit is detected, a label or services name associated with the logical circuit is automatically associated with a logical circuit identifier utilized for ...

10/20/05 - 20050232144 - Method for selecting a restoration path in a mesh network
A method of selecting a restoration path in a mesh telecommunication network is disclosed that advantageously is practical and flexible and may be pre-computed along with a service connection path during the setup of the connection. The information used to select the restoration path can be advantageously distributed among nodes ...

10/20/05 - 20050232143 - Method and apparatus for bypassing a payload node
A multi-service platform system (100) includes a rear transition module (102) coupled to receive a DSX signal (105) and a payload node (104) coupled to the rear transition module via a backplane (110), where the payload node is coupled to process the DSX signal. A secondary payload node (114) is ...

10/13/05 - 20050226143 - Data monitoring and recovery
In one embodiment, a method for DMR includes generating first tracking reports of first data units received at one or more receptors from one or more remote units, generating second tracking reports of first data units received at one of one or more centrals, and generating delivery reports of second ...

10/06/05 - 20050220006 - Node apparatus and maintenance and operation supporting device
The present invention relates a node device cross-connected to a STM transmission system and a maintenance and operation support device connected to the node device. The object of the present invention is to releasing a desired transmission section or link efficiently. Therefore, the node device according to the preset invention ...

09/29/05 - 20050213498 - Routing system and method for transparently recovering routing states after a failover or during a software upgrade
Methods and apparatus for efficiently enabling routing states to be recovered after a failover or during a software upgrade in a system which supports graceful restart and stateful switchover are disclosed. According to one aspect of the present invention, a method for restarting a network device which has a plurality ...

09/15/05 - 20050201273 - Label-switched path network with alternate routing control
In a label-switched path communications network, each node of the network defines first and second label-switched paths between its first and second output ports and the input ports of downstream nodes. The output ports of each node are monitored. If the first output port is normal, a received packet containing ...

09/15/05 - 20050201272 - System and multi-thread method to manage a fault tolerant computer switching cluster using a spanning tree
A system, method and computer program to detect and recover from a communications failure in a computer network. The computer network has several nodes which include processor-based systems, input/output controllers and network controllers. Each node has a cluster adapter connected to multiple port switches through communications links. Data is transmitted ...

09/15/05 - 20050201271 - Method, system, and computer program product for avoiding data loss during network port recovery processes
A method, system, and computer program product are disclosed in a data processing system for avoiding data loss during network port recovery. A first network port is linked to a second network port via a network. The second network port transmits data to the first network port via the network. ...

09/08/05 - 20050195737 - Protection method and system for equipment in a network element
A protection method and system for equipment in a network element receives a protection request for an equipment item. A priority of the request and a priority of the equipment item is evaluated relative to all other outstanding protection requests for equipment items in a protection group with the equipment ...

09/08/05 - 20050195736 - Information processing apparatus and method of controlling the information processing apparatus
An information processing system comprises an information processing apparatus, a switch, and a storage device, wherein the first communication ports and the third communication ports are connected to the second communication ports. When a response from a storage device to a data input/output request is not received within a predetermined ...

09/08/05 - 20050195735 - Method to maintain the integrity of remote data by making it disposable
In a networked system having a protected central server network connected to one or more satellite servers, the central server includes master data, and each satellite system includes replicated data derived from the master data. A corruption of at least a portion of the replicated data in one of the ...

09/01/05 - 20050190690 - Multi-port, gigabit serdes transceiver capable of automatic fail switchover
A multi-port Serdes transceiver includes multiple parallel ports and serial ports, and includes the flexibility to connect any of the parallel ports to another parallel port or to a serial port, or both. Furthermore, the transceiver can connect any of the serial ports to another serial port or to a ...

08/25/05 - 20050185576 - Communication apparatus and communication system
Interlayer-coordinated communication-line switching in a network including two layers, each having a switching function. In the present invention, a communication apparatus which (1) is connected with a network including (i) lower layer apparatus which are connected with communication lines of a lower layer and communication lines of an upper layer ...

08/18/05 - 20050180316 - Protection for bi-directional optical wavelength division multiplexed communications networks
A bi-directional wavelength division multiplexed (WDM) optical communications network that includes components for automatically detecting a fault along a primary optical waveguide in a link forming part of a bi-directional WDM communication network and switching the transmission path of the optical signals propagated along that link from that waveguide to ...

08/11/05 - 20050174934 - Traffic-independent allocation of working and restoration capacity in networks
A given network of nodes that are interconnected by links having corresponding capacities has each link's capacity divided into working capacity and restoration capacity without a priori information about network traffic characteristics. Allocation of working capacity and restoration capacity for the network might be optimized by characterization of the network ...

08/04/05 - 20050169167 - Line format setting method and communication apparatus using the line format setting method
A line format setting method is disclosed. The line format setting method includes the steps of detecting a line alarm of each line in a plurality of lines, inserting path alarm information into all paths inside a line from which the line alarm is detected, detecting the path alarm information ...

07/21/05 - 20050157640 - Methods, systems, and computer program products for routing traffic between nodes in a network that are connected by redundant links
A communications network is operated by providing a plurality of redundant links between a first network node and a second network node. A first identifier is associated with a first one of the plurality of redundant links and a second identifier is associated with a second one of the plurality ...

07/14/05 - 20050152268 - Link failures
A data communications architecture employing serializers and deserializers that reduces data communications latency. In an illustrative implementation, the data communications architecture communicates data across communications links. The architecture maintains various mechanisms to promote data communications speed and to avoid communication link down time. These mechanisms perform the functions including but ...

07/07/05 - 20050147027 - Method, system and hub for loop initialization
The present invention describes a method and system for initializing a redundant loop system comprising one or more hubs, plurality of nodes connected to the hubs, wherein the redundant loop system comprises two or more loops. The loops in the redundant loop system are classified as being either in active ...

06/23/05 - 20050135233 - Redundant routing capabilities for a network node cluster
Graceful/hitless restart features from a routing/signaling protocol may be utilized along with synchronization between cluster members in order to provide routing capabilities in a clustering environment. During normal operation, the active cluster member may operate the routing protocol(s) and communicate with the neighboring components using the cluster's address. As the ...

06/23/05 - 20050135232 - Transmission apparatus having a function of changing path setting
To provide a transmission apparatus and a transmission method in which change of connection information (settings) on an operation side of all transmission apparatuses is carried out in a state in which all the transmission apparatuses are synchronized with one another without interrupting a service for a path line of ...

06/23/05 - 20050135231 - Routing protocols with predicted outage notification
A method for the efficient routing of data packets across a plurality of routers when a link is unavailable which includes connecting a plurality of nodes in a network using a plurality of routers having a plurality of links between the routers, informing the routers in the network when one ...

06/16/05 - 20050128941 - Circuit to provide backup telephone service for a multiple service access system using a twisted pair
A subscriber link to a central office which employs data compression, forward error correction, and advanced modulation techniques and to connect subscribers to multiple communications networks to provide an array of services. A device provides normal telephone service in the event of an equipment failure. At the subscriber end, a ...

06/16/05 - 20050128940 - 1‘mesh protection
1+1 Mesh Protection provides 1+1 protection for connections across an automatically routed mesh network, where a connection is setup automatically by using an intelligent signaling and routing protocol. 1+1 Mesh Protection can set up, tear down, and reroute both the working path and protect path across the mesh network automatically ...

06/16/05 - 20050128939 - Method of performing protected transmission over a wavelengh-division multiplexed network
The invention relates to a method of providing protected transmission between two nodes (1, 2) of a wavelength-division multiplexed network. The invention proposes to have loss of signal over the main line (3) detected by a node, and then to interrupt transmission of data over the main line by said ...

06/09/05 - 20050122897 - Supporting sdh/sonet aps bridge selector functionality for ethernet
An Ethernet Automatic Protection Switching (APS) Bridge Selector is provided for supporting SDH/SONET APS standard functionality in Ethernet Networks. In accordance with one embodiment, an Ethernet APS Bridge Selector is provided for bridge, selector, and switchover functionality for a plurality of Physical Layer (PHY) hardware devices. The Ethernet APS Bridge ...

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