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Class 370/248 - Path check


Subclass of Class 370 - Multiplex communications
Definition: Subject matter wherein a link through a multiplex system
No. of patents: 933
Last issue date: 02/14/2012


1                      
NumberTitleIssue Date
8116213Tracing routes and protocols
A computer-readable medium may include computer-executable instructions. The computer-executable instructions including instructions for receiving a request to trace a route, in a network, from a source device to a target device and to identify protocols that are as...
02/14/2012
8111627Discovering configured tunnels between nodes on a path in a data communications network
An apparatus and method are described for discovering a configured tunnel between nodes on a path in a data communications network. In an embodiment, an apparatus is arranged to remotely access at least one node on the path, identify whether a tunnel is configured o...
02/07/2012
8102780Method and apparatus for performing reachability testing within the context of customer virtual private networks
In one embodiment, the invention comprises a method and apparatus for verifying connectivity in a network comprising a plurality of provider edge routers and a plurality of customer edge routers facilitating communication within at least one customer virtual private...
01/24/2012
8068434Network infrastructure capability detection
A system to discover a network infrastructure capability includes one or more subsystems to establish a communication path between a first endpoint and a second endpoint. A test packet is sent from a first endpoint along the communication path and a value is associa...
11/29/2011
8064354Optimized path call routing with device identifier
A process for routing a call between an ingress point and an egress point is based on an identifier, such as a number, assigned to the egress point and a registry in which identifiers are stored. A routing component receives the call from the ingress point and consu...
11/22/2011
8054754Method and system for service interruption notification
Exemplary methods and systems may provide a soft-inactivity notification during a VoIP call, which according to an exemplary embodiment involves a SIP session and packet-data communications between participants in the VoIP call. The method comprises (a) detecting th...
11/08/2011
8050183System and method for implementing reflector ports within hierarchical networks
In some ring protocols, control messages are exchanged among ring nodes in order to implement certain behaviors, such as loop-free behavior and/or failure recovery, within the ring. A segment of a ring can be replaced by another network, effectively turning the ring...
11/01/2011
8045478Performance measurement in a packet transmission network
A data packet transmission network comprises a stream of packets of data sent by a first terminal passes in transit through at least one network equipment with which there is associated a stream measurement unit; wherein the first terminal and the measurement unit a...
10/25/2011
8027263Method to manage path failure threshold consensus
A system for providing hosts with a capability to determine which threshold rule of a plurality of threshold rules to use based upon threshold consensus. For example, the system would address a configuration case of several hosts sharing an output port of a fabric v...
09/27/2011
8018863Reducing CC message transmission in a provider network
A method and apparatus for reducing the number of CC messages transmitted in a provider network. In one embodiment of the invention, a first service provider network element receives CC messages from a first customer network at a first periodicity rate. The first se...
09/13/2011
8018862Probes for predictive determination of congestion based on remarking/downgrading of packets
In one embodiment, a technique for detecting the re-marking of a parameter in a network packet is provided. The technique involves sending a request packet that contains a first value of a type of service parameter effecting how the packet is to be handled relative ...
09/13/2011
8018861Method and device for allocating at least one routing identifier to at least one bridge in a network
The invention relates to a method for allocating at least one identifier known as routing identifier to at least one bridge (1002, 1008, 1009, 1010, 1012) of a network (1000), the said bridge comprising at least two interconnection equipment (1021, ...
09/13/2011
8004997Data path differentiator for pre-emphasis requirement determination or slot identification
An apparatus and method is disclosed for generating path length information for two (usually redundant) receive paths in a receiving device such as a server blade so that the proper amount of equalization and/or pre-emphasis may be applied to receiver and driver cir...
08/23/2011
7990881Methods and devices for computing paths to assure the inter-domain transport of QoS sensitive information
Information can be transported over domains operated by different service providers at required Quality-of-Service (QoS) levels without disclosing inter- and/or intra-domain information to ensure that the topology of a given service provider's domain (e.g., network)...
08/02/2011
7986632Proactive network analysis system
A proactive network analysis system is a single unit for diagnosing network problems, measuring network performance, and monitoring network status in a comprehensive manner. The system is a compilation of individual tools including a distributed network packet captu...
07/26/2011
7969899Electronic device, system on chip and method of monitoring data traffic
Therefore, an electronic device is provided which comprises a plurality of processing units (IP1-IP6), and a network-based interconnect (N) coupling the processing units (IP1-IP6) for enabling at least one first communication path (C) bet...
06/28/2011
7969898Technique for breaking loops in a communications network
A technique for breaking a loop caused by looping alternate paths associated with a prefix in a communications network. One or more non-looping alternate paths associated with the prefix that exclude a first node in the communications network are identified. One or ...
06/28/2011
7965647Performance indicator for a high-speed communication system
A method and apparatus for generating a performance indicator in a high-speed communication system. A plurality of disparate communication status signals with differing formats from a transceiver are combined in a logic module to create a single link quality indicat...
06/21/2011
7961635Network latency analysis packet and method
A packet and a method for analyzing network latency are disclosed. The disclosed systems and methods measure the latency between nodes in a network and do so while using less bandwidth and processing than traditional methods by using a packet to traverse a network a...
06/14/2011
7957302Identifying analog access line impairments using digital measurements
The preferred embodiments include a method, system or computer-readable storage medium for identifying analog access line impairments in a communications network. The embodiments include determining a ping packet loss count and a ping failure count from digital pack...
06/07/2011
7957301Method, apparatus and system for multicast communication in a wireless multi-hop network
A method for multicast communication in a network having plural nodes according to the ZigBee network specification includes creating a multicast group including a subset of the plural nodes and excluding at least one non-member node in the plural nodes. The multica...
06/07/2011
7944844Methods and apparatus to monitor network layer functionalities
Example methods and apparatus to monitor network layer functionalities are disclosed. A disclosed example method includes receiving a first probe packet at an input of a first server, the first probe packet being received from a router, the first probe packet being ...
05/17/2011
7944843Path based network management method and apparatus for data communication networks
Network analysis in a network management system for a data network is improved by mapping the communication paths established in the network. Queries are sent by the network management system to each network element in the network. Queries are triggered by events wi...
05/17/2011
7940682Systems configured to automatically identify open shortest path first (OSPF) protocol problems in a network and related computer program products and methods
A data communications system may include a network having a plurality of network provider routers configured to support Open Shortest Path First (OSPF) circuits between customer edge routers outside the network, an automated diagnostic system coupled to the network ...
05/10/2011
7933213Method and apparatus for monitoring and restoring time division multiplexing circuits
A method and apparatus for proactively managing TDM circuits used in a packet network, e.g., a VoIP network, by allowing it to instruct a program to periodically test the health of all circuits catalogued in the TDM facility database are disclosed. If a circuit is f...
04/26/2011
7933214Fault detection in a transport network
A device associated with a transport network generates a first traceroute through the transport network, and monitors a performance measure associated with the transport network. The device also compares the performance measure to a criterion, and determines degrada...
04/26/2011
7929449System, method and program for determining failure in network communication
System, method and program product for determining a cause of a failure of a communication from a source device to a destination device. A preferred route from the source device to the destination device comprises a series of routers in a forward order. First progra...
04/19/2011
7924730Method and apparatus for operations, administration and maintenance of a network messaging layer
A method of performing connectivity verification in a content routed network including a plurality of routers and wherein messages are transported through the network over a message transport layer, involves sending from an originating router a ping request message ...
04/12/2011
7920481Path maximum transmission unit determination
Disclosed are techniques for determining a path maximum transmission unit (MTU) of a communication path connecting two or more nodes of a network. A node initiates a connection with a remote node by repeatedly transmitting increasingly-larger path MTU discovery mess...
04/05/2011
7907537System and method for electronically identifying connections of a cross-connect system
A system and method for electronically identifying connections established through a cross-connect system provides for identification of all hard-wired and temporary patch connections, and any modifications made to same. Connection identification and status informat...
03/15/2011
7898967Multiple upstream channel descriptor messages pointing to single upstream channel ID for more efficient operation of a DOCSIS system
In a DOCSIS-based communications system, different upstream channel descriptors (UCDs) all identify a single logical upsteam channel identifier (UCID) regardless of the type of cable modem (CM) to which the UCDs are sent. Different CMs having different capabilities ...
03/01/2011
7898968Systems and methods for selecting efficient connection paths between computing devices
A method for determining a communication path between a first computing device and a second computing comprises: receiving, at a second computing device, a plurality of IP addresses for a first computing device; establishing a primary connection between the first an...
03/01/2011
7898970Method for end to end route control
Session independent end to end route control is provided by coordination between a pair of route control devices. Each device determines whether received traffic qualifies for end to end route control and whether the device at the other end supports end to end route...
03/01/2011
7898969Performance measurement in a packet transmission network
In a data packet transmission network, a stream of packets of data sent by a first terminal passes in transit through at least one network equipment with which there is associated a stream measurement unit, wherein the first terminal and the measurement unit are con...
03/01/2011
7894353Method, apparatus, and system for diagnosing route in network based on diameter protocol
A method, system, and apparatus for diagnosing a route in a network based on a Diameter protocol are provided. The method includes the following steps. A source Diameter node generates a diagnosis message and sends it. An intermediate Diameter node adds diagnosis in...
02/22/2011
7894352Detecting data plane liveliness of a label-switched path
Detecting if a label-switched path (LSP) is functioning properly. To test that packets that belong to a particular Forwarding Equivalence Class (FEC) actually end their MPLS LSP on an label switching router (LSR) that is an egress for that FEC, a request message car...
02/22/2011
7881211Limited perimeter vector matching fault localization protocol for survivable all-optical networks
The inventive Limited perimeter Vector Matching fault localization method and system is launched when alarming sinks are identified. Each alarming sink broadcasts its node ID and path length, and all nodes compare their paths to identify an executive sink, which cre...
02/01/2011
7881212Method for determining a route distance value
A method determines a route in distance value for use in routing protocols. An optimum route is determined for time-critical transmissions such as videotelephony or VoIP. For this purpose, the route distance value is calculated as the product of the link metrics for...
02/01/2011
7869376Communicating an operational state of a transport service
This document describes tools that communicate an operational state of a transport service. The transport service provides connectivity between two or more networks, enabling the networks to exchange packets. The tools detect an operational state of a transport serv...
01/11/2011
7864689Method and system for automatic media dependent interface reconfiguration and repair
Providing and configuring communication links may include determining a usable media pair from all existing media pairs and selecting any one channel from all existing channels. The selected channel may be assigned to any one of the media pairs. Any one or any combi...
01/04/2011
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