Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7599303 | System and methods for sending trace messages A traceroute mechanism enables responses to the traceroute to reach the originating router (originator) along a multihop pseudowire (PW). A traceroute message includes an accumulator operable to count hops along a MH-PW, implemented as a time-to-live (TTL) field, as... | 10/06/2009 |
| 7599302 | Dynamic enforcement of MPLS-TE inter-domain policy and QoS A technique dynamically enforces inter-domain policy and quality of service (QoS) for Traffic Engineering (TE) Label Switched Paths (LSPs) between a local domain and a remote domain in a computer network. According to the enforcement technique, a Path Computation El... | 10/06/2009 |
| 7596097 | Methods and apparatus to prevent network mapping A trace detector prevents network mapping and tracing by detecting an initial packet containing an initial time to live value that meets a first predetermined threshold range. The trace detector identifies a source address of the initial packet and adjusts a thresho... | 09/29/2009 |
| 7596096 | Method and apparatus for providing trace route and timing information for media streams An apparatus and method that use media packets, such as Real-time Transport Protocol (RTP), packets with a specially define profile to determine the route and round-trip-time information. The route is determined by transmitting by a first network endpoint one or a g... | 09/29/2009 |
| 7583605 | Method and system of evaluating survivability of ATM switches over SONET networks In a particular embodiment, a method of evaluating a network is disclosed. The method identifies potential failure points between a layer two asynchronous transfer mode network and a layer one Synchronous Optical Network (SONET) network. The method includes identify... | 09/01/2009 |
| 7570597 | Discovery process in a vehicle network A method of configuring a network within a vehicle, wherein the network includes a plurality of network elements and a plurality of communication links communicatively coupling the plurality of network elements for point-to-point communication, includes storing a la... | 08/04/2009 |
| 7564796 | Method and system for managing a network slowdown A system and method are disclosed for managing a network slowdown. The method includes measuring a time for a packet to travel from a source node over a given path to a destination node in the network; comparing the time with a threshold for the path; and generating... | 07/21/2009 |
| 7539148 | Circuit integrity in a packet-switched network Techniques for performing a continuity check operation include sending a pattern of bits over a packet network connection through a first interface on a packet network to a second interface on the packet network. The first interface is monitored for return of the pa... | 05/26/2009 |
| 7519003 | System 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... | 04/14/2009 |
| 7519004 | Loopback testing of a network interface device from a user-space software layer A loopback test of the datalink layer of a network interface device is performed from a user-space software layer. In certain embodiments, network address translation rules in the network layer are modified to change source and destination network addresses of a tes... | 04/14/2009 |
| 7515545 | Signal repeater and switching device, method of detecting connecting relation between signal repeater and switching device and communication system The present invention is intended to find a connecting state of a bidirectional signal repeater with an optical switch to prevent an erroneous registration of the topology. The present invention also has an object to confirm the normality of a link between the optic... | 04/07/2009 |
| 7489643 | Increased availability on routers through detection of data path failures and subsequent recovery Methods and systems for monitoring a data path on a network routing device are described. The data path includes a plurality of devices on the network routing device and an interface. Data packets are moved on the network routing device using the devices and communi... | 02/10/2009 |
| 7480251 | System and method for detecting unidirectional links A method of testing a primary device for two-way communication between the primary device and one or more other devices in communication therewith in a network is disclosed. The method includes inserting into an echo packet an originating device identifier in an ori... | 01/20/2009 |
| 7471637 | Method and system for monitoring idle network circuits A method is provided for monitoring a network that includes providing a path selector that can select between a first input and a second input, where the first input is coupled to a customer premises equipment interface that is operable to receive signals from custo... | 12/30/2008 |
| 7471638 | Testing for a misconnection between first and second networks An apparatus to test whether a first network is misconnected to a second network includes an interface to the first network, and a controller coupled to the interface to send a first message to the first network, the first message to request configuration informatio... | 12/30/2008 |
| 7463591 | Detecting 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... | 12/09/2008 |
| 7453818 | Detection of potential forwarding loops in bridged networks Potential forwarding loops in bridged networks are detected. A switch monitors the movement of packet addresses in the forwarding table to different ports. If the port associated with an address changes multiple times in a short time duration, then a potential forwa... | 11/18/2008 |
| 7447161 | System and method for enhanced SONET network analysis In an illustrative method for providing enhanced SONET network analysis, data related to the structure of a SONET network is identified, for example, in a database. The data comprises details regarding the network elements that form the SONET network as well as data... | 11/04/2008 |
| 7444258 | Automated simulation testbench generation for serializer/deserializer datapath systems Embodiments herein present a method for automated simulation testbench generation for serializer/deserializer datapath systems. The method provides a database of transactors for generating and checking data within the datapath system, wherein the transactors are ada... | 10/28/2008 |
| 7436777 | Failed link training 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 var... | 10/14/2008 |
| 7437476 | Optimizing flooding of information in link-state routing protocol A router executes a flooding algorithm. The router maintains a list of neighbors within an area data structure. When a new neighbor arises on an interface belonging to an area served by the router, the router updates the neighbor data structure describing that adjac... | 10/14/2008 |
| 7433320 | System and methods for network path detection Customer edge (CE) to CE device verification checks initiate routes from available CEs as a set of path verification messages, destined for remote CE routes serving a remote VPN. An extended community attribute, included among the attributes of the path verification... | 10/07/2008 |
| 7433319 | System and method for collecting and presenting service level agreement metrics in a switched metro ethernet network A method for monitoring a network includes injecting a plurality of data packets into the network. The data packets are transmitted between a source device and a destination device. A plurality of reflected data packets is collected. The plurality of reflected data ... | 10/07/2008 |
| 7433323 | Remote testing of high speed data and voice communication networks Faults or degradation of performance of a voice/data communication network (2) are identified without the need to dispatch service personnel by selectively testing isolated sections of the communication network. For some of these tests, the communication netw... | 10/07/2008 |
| 7433318 | Received path trace detection apparatus A received path trace detection apparatus includes (i) a specific byte extracting/holding function unit for receiving a path signal and extracting and holding once path information written for showing the path in specific bytes in the received path signal at a prede... | 10/07/2008 |
| 7433450 | Method and system for connection verification The present invention provides a method and system for connection verification. An embodiment includes a DSL based system, with a tester resident at a central office respective to a DSLAM. When a problem is encountered by a subscriber, the tester can be readily conn... | 10/07/2008 |
| 7430174 | Data flow between a communication node and a mobile node in a mobile network A method of transmitting a data packet on a communication path from a first communication node (CN1, CN2) to a second communication node (LFN1, LFN2) in a mobile network (115). The method includes receiving a route message (1010... | 09/30/2008 |
| 7428209 | Network failure recovery mechanism A mechanism for recovering from a failure in a network is disclosed, wherein a first set of information, such as a first packet, is initially sent from a source to a destination via a first route. As the packet travels along the first route, if a failure is detected... | 09/23/2008 |
| 7428213 | Method and apparatus for determining network routing information based on shared risk link group information A method and apparatus are disclosed for performing a shortest path first network routing path determination in a data communications network based in part on information about links that are associated as shared risk link groups. Micro-loops are avoided in computin... | 09/23/2008 |
| 7426685 | Device for controlling an xDSL communication line A device for checking a transmission line carrying a plurality of digital and/or analogue transmission channels is provided. The device includes a measurement block designed to evaluate performances, search for faults and determine the quality of the line and servic... | 09/16/2008 |
| 7423974 | Disabling mutually recursive routes Disabling mutually recursive routes is disclosed. An event that results in a routing table update is received. A next hop table is updated to reflect the event. It is determined whether the event is associated with an exterior protocol route. The next hop table is u... | 09/09/2008 |
| 7423977 | Smoothing algorithm for round trip time (RTT) measurements A smoothing algorithm for round trip time (RTT) measurements is provided to a network device to effectively deal with variations or other potential anomalies that may occur in RTT measurements. The algorithm involves: first determining what should be considered a ve... | 09/09/2008 |
| 7420928 | Testing of transmission quality in packet-based networks The invention relates to the testing of transmission quality of transmission links in a packet network. According to the invention, the director and responder functionality are made available in a resource server of the packet network. In order to perform a quality ... | 09/02/2008 |
| 7418203 | Diagnosis method for standby system of optical ring network An object of the invention is to provide a diagnosis method for standby systems in an optical ring network having a redundant configuration, which can confirm normal states of standby systems in all optical transmission apparatuses on the network, even during operat... | 08/26/2008 |
| 7417948 | Controlled data network error recovery A method, a system and network nodes using indication of possible duplicates (IPD) of units, so that these units can be handled differently than other units. The unit is indicated to be a possible duplicate to the entity to which it is resent because no response was... | 08/26/2008 |
| 7414997 | GPRS tunneling protocol path integrity protocol Network efficiency is improved by building and maintaining path integrity tables in nodes of a network. The tables include path integrity information for paths associated with the nodes. A path is defined by a source address, a destination address and a port or vers... | 08/19/2008 |
| 7408883 | Apparatus and method for performing a loopback test in a communication system The invention is test apparatus and methods for performing loopback tests. The tests involve generating a packet-based test message having a source address and a destination address. When the test message arrives at the destination, the addresses are exchanged and t... | 08/05/2008 |
| 7392017 | Assessing wireless network quality A method of providing information indicative of network coverage by one or more wireless service providers in a geographic area may include obtaining, at an information provider, performance indicators for a plurality of accesses to the information provider by a plu... | 06/24/2008 |
| 7388843 | Method and apparatus for testing loop pathway integrity in a fibre channel arbitrated loop A method for performing a fibre channel arbitrated loop integrity test using a fibre channel switch element is provided. The method includes, sending a fibre channel frame through the arbitrated loop; receiving the fibre channel frame after it has traversed through ... | 06/17/2008 |
| 7385932 | Wideband frequency domain reflectometry to determine the nature and location of subscriber line faults A technique for estimating distances and the nature of irregularities and faults on a telephone subscriber line is disclosed. Reflected test signals are measured as a function of frequency. The measurements are compensated for variable propagation velocity and varia... | 06/10/2008 |
