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7613392 |
1:N protection in an optical terminal
A communication network comprising at least one first terminal, at least one second terminal, a plurality of links, and at least first and second nodes. The first node is bidirectionally coupled to...
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7613108 |
Redundant supervisory control system, and redundancy switching method of the same
An object is to provide a redundant supervisory control system and a redundancy switching method thereof. In the redundant supervisory control system, remote I/O apparatuses are less likely to be...
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7613105 |
Methods and systems for removing data inconsistencies for a network simulation
A network troubleshooting framework is described. In an implementation, a method includes forming a plurality of reports by a plurality of nodes in a network, wherein each of the reports is formed...
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7610405 |
Router software upgrade employing redundant processors
Systems and methods for replacing software controlling active routers while minimizing impact on network operation are provided by virtue of one embodiment of the present invention. The software...
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7609617 |
BGP hitless upgrade approaches
A method is disclosed for upgrading network protocol software, comprising receiving a new version of Border Gateway Protocol (BGP) software on a standby route processor that is coupled to an active...
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7606141 |
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...
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7606140 |
Distributed and disjoint forwarding and routing system and method
A distributed and disjoint forwarding and routing system and method operable with a routing element having a scalable cluster-based architecture, wherein the control plane and data plane are...
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7603480 |
System using pseudo redundant configurator to switch network devices between operating and standby states
Disclosed is a network system comprising: a plurality of routers 704 and 705 connected to each other through a network; pseudo redundant configuration setting means 702 and 703 which are...
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7602700 |
Fast re-route in IP/MPLS networks and other networks using SONET signaling
A provider device determines that a failure has occurred in a link or path and notifies a customer device of the failure. The notifying causes the customer device to become aware of the failure in...
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7602699 |
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...
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7602698 |
Systems and methods for providing multi-layer protection switching within a sub-networking connection
A sub-network system includes line modules configured to receive bridged traffic signals over individual corresponding channels. The line modules are grouped into sets at a lower protection layer...
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7600171 |
Method of controlling FEC in EPON
A method of controlling a Forward Error Correction (FEC) operation including: configuring a FEC frame to be transmitted between an OLT and an ONU comprising a FEC frame identifier indicating...
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7599284 |
Restartable spanning tree for high availability network systems
A method and apparatus for continuing the operation of a spanning tree protocol at a network device despite crashes or failures at that device is disclosed. The network device includes a plurality...
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7599283 |
Network traffic synchronization and data compression in redundant network topologies
Synchronization of network traffic compression mechanisms deployed in redundant network topologies. In one implementation, the present invention features the synchronization of compression...
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7596642 |
System and program for determining the availability of paths to a device
Disclosed is a system and program for selecting one of multiple proposed paths to a device. For each proposed path, a determination is made of a number of components the proposed path shares with...
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7596633 |
Island recovery in a peer-to-peer relay network
Methods and apparatus for implementing peer-to-peer relay. In one implementation, a method of island recovery in a peer system in a peer-to-peer relay network includes: detecting the presence of...
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7596083 |
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...
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7594252 |
Early warning fault identification and isolation system for a two-way cable network
Set top boxes (STBs) connected to the HFC cable network are “pinged” and their responses recorded. The two most responsive STBs in each node of the HFC cable network are identified. The most...
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7593412 |
Method to manage SAAL resources in distributed implementation environment
The invention proposes a method for managing of Signalling ATM Adaptation Layer (SAAL) resources performed in a sublayer comprising the steps of receiving a request from a Layer Management (LM);...
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7593319 |
LAN switch with rapid fault recovery
One embodiment disclosed relates to a method of fault recovery by a switch in a local area network. A link failure is detected at a port of the switch. In response to the link failure detection, a...
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7593318 |
Method and apparatus for header updating
Methods and systems include establishing a connection between two agents, storing a transaction header for data packets being transmitted from one agent to the other, transmitting the packets,...
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7590050 |
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...
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7590047 |
Memory optimization packet loss concealment in a voice over packet network
A method to reduce memory requirements for a packet loss concealment algorithm in the event of packet loss in a receiver of pulse code modulated voice signals. A voice playout unit in the receiver...
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7590046 |
Protected SONET/SDH networks having delayed fault propagation
A method and apparatus are disclosed for protecting a network having data networks, such as Fibre Channel, Ethernet, GbE and ESCON networks, and SONET/SDH transport networks. The method and...
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7587201 |
Network apparatus capable of confirming whether a device is operating properly after a change of communication settings
A network apparatus has a wireless communication unit communicating wirelessly with a network apparatus, a connection control unit controlling the wireless communication unit based on connection...
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7586840 |
Method and apparatus for detecting and fixing faults in an inline-power capable ethernet system
The present disclosure provides for the sensing and detection of potential ground faults, and location of faulty ports. Circuitry is provided that utilizes the isolation resistor provided in the...
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7586839 |
Peer to peer backup and recovery
A method in a processing system for managing backup data on a set of nodes in a network data processing system. An inventory of files is generated on a set of nodes in the network data processing...
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7586838 |
Flexible M:N redundancy mechanism for packet inspection engine
A system, mechanism and method are provided for inspecting packets. Application processing engines (ASEs) inspect an IP packet flow of subscribers. It is determined whether any of the ASEs is...
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7583589 |
Computing repair path information
An apparatus and method is described for computing repair path information around a failure component in a data communications network having a components nodes and links therebetween. Where,...
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7583588 |
System and method for maintaining a layer 2 modification buffer
A network device for processing packets. The network devices includes a ingress module for performing lookups for layer 2 switching and performing operations for maintaining a layer 2 table. When...
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7583587 |
Fault detection and diagnosis
A network troubleshooting framework is described. In an implementation, a method includes detecting discrepancy in operation of a network by supplying data that describes the network to a network...
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7580732 |
Subscriber aggregated power
A system for supplying power in a communication network includes a network element and a plurality of subscriber devices in communication with the network element. Each of the plurality of...
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7573885 |
Alternative routing in PNNI hierarchical networks
Methods and apparatus are provided for alternative routing of a connection between a source node and a destination node in a PNNI hierarchical network. The alternative routing method comprises...
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7573813 |
Method for configuring and routing data within a wireless multihop network and a wireless network for implementing the same
A method routes packets in a wireless network which includes a control node and a multiplicity of individual nodes. The method includes: inserting a routing logical address into each packet which...
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7573811 |
Network transparent OSPF-TE failover
A method and apparatus for providing link state routing protocol redundancy in a router. A router includes an active controller and at least one standby controller. An internal adjacency...
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7573810 |
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...
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7573809 |
Semi-transparent time division multiplexer/demultiplexer
A semi-transparent time division multiplexer/demultiplexer that transmits low rate tributaries from one location to another using a high rate aggregate connection, while preserving substantially...
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7573808 |
Smart resync of data between a network management system and a network element
Network recovery of multiple NEs, such as at NMS restart, or at re-establishment of communication after loss of communication with the NMS that provides reduced cost and reduced the elapsed time...
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7571310 |
Method for detecting security module for link protection in ethernet passive optical network
The present invention provides a method for detecting a security module for link protection in an EPON, wherein an OLT and an ONU in the EPON can check whether or not an encryption module is...
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7570655 |
Distributed router application serialization
A router, which may be a wireless gateway, for routing messages between communications networks, including a persistent storage, and a transport interface for sending outgoing messages to...
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7570580 |
Automatic problem isolation for multi-layer network failures
A method and apparatus includes automatically correlating indicators already generated by network components to detect and isolate failures that are caused by or related to network components...
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7570579 |
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...
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7567506 |
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...
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7567505 |
VRRP technology keeping VR confidentiality
In a packet transmission router used in a VRRP (Virtual Router Redundancy Protocol) network having a VR (Virtual Router) function, when virtual routers VR are realized by the VRRP, the routing...
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7567504 |
Network load balancing with traffic routing
In an exemplary method implementation, a method includes: receiving a packet requesting a new connection at a forwarding component; sending the packet from the forwarding component to a classifying...
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7567503 |
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...
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7564845 |
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...
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7564777 |
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...
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7564776 |
Method for controlling the transport capacity for data transmission via a network, and network
A method and apparatus for controlling the transport capacity for data transmission in a network, providing a high level of resilience, and at the same time, avoiding excessive overdimensioning of...
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7561795 |
Dynamic interlayer protection in optical telecommunication networks
The present invention relates to a method for protecting an optical telecommunication network against possible failures and signal degrades, the network comprising at least two nodes; working...
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