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7619981 |
Apparatus, system, and method for identifying network mis-cabling
An apparatus, system, and method are disclosed for detecting and reporting network mis-cabling. One embodiment of the apparatus includes a detection module, a comparison module, and a cabling...
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7609622 |
Communication system having enhanced reliability
A method for a system including a plurality of encoders each for receiving a first signal and encoding to generate a respective second signal for sending to a respective subscriber, comprising...
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7609618 |
Dynamically controlling HSRP preemption dependent on stateful NAT convergence
The invention relates to a method for switchover from an active node to a standby node wherein when a standby network node restarts, designation of the standby node as a new active node is delayed...
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7606237 |
Sharing restoration path bandwidth in mesh networks
A shared mesh data network (SMDN) for path-based recovery at the packet level. In one implementation, a first link in the network is part of two or more different protection paths, where each...
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7602701 |
WideBand cross-connect system and protection method utilizing SONET add/drop multiplexers
A cross-connect protection method and system having two switch fabrics each coupled to at least one SONET add/drop multiplexer. The SONET add/drop multiplexer utilizes PDI-P codes to determine...
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7596095 |
Network device test system and method for testing network device
A network device test method is provided. The network device test method comprises providing at least one leasing module, at least one monitoring module, at least one saving module, at least one...
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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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7593337 |
Packet processing system
A control device includes a virtual IF set to associate with address information of an interface on a forwarding device and, when detecting that an application section accesses the virtual IF,...
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7590503 |
Method and system for rerouteable cyclic redundancy check sum (CRC) for different sources
Provided is a system and method including a number of routers structured and arranged to route one or more video sources to any of one or more destinations. Each of the number of routers including...
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7590054 |
Protection switching in an ethernet packet-switched network
Protection switching in an Ethernet packet-switched network includes establishing first and second virtual circuits. The first virtual circuit carries packet traffic associated with a different...
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7586856 |
Technical enhancements to STP (IEEE 802.1D) implementation
An embodiment includes a method of minimizing the delay in convergence time for a complex STP topology following a topology change in the network system in the spanning tree protocol (STP)...
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7580348 |
Communication apparatus, control method, and computer readable information recording medium
In order to rapidly restoration at a time of fault occurrence without lowering usage efficiency of circuit resources, in a configuration in which a plurality of physical circuits are grouped and...
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7574629 |
Method and device for switching between agents
In some embodiments, a system for communication between agents in a point-to-point interconnection system includes at least one initiator agent capable of dispatching at least one message destined...
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7573829 |
Method and apparatus for low overhead network protocol performance assessment
A method and apparatus for testing network performance are provided. In data provided by an application on a first host for transport or communication to an application associated with a second...
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7573828 |
Fault isolation system and method
A fault isolation system and method. A hierarchical numbering system is applied to devices within a cable network. Each subscriber is associated with a “last active device” or “LAD”...
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7570582 |
Method and system for routing communications among computer networks
A method and system for determining route redistribution are disclosed. The method generally comprises receiving an information packet from a neighbor source. The information packet identifies the...
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7564795 |
Obtaining per-port location information for wired LAN switches
In one embodiment, a device with a wireless transceiver and a network interface, such as a wireless location determination device or a laptop with wireless capability and an Ethernet port, is...
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7564778 |
Method of and control node for detecting failure
A method of detecting a failure in a network, which includes a transport plane comprised of a plurality of communication nodes performing optical cross-connect and a control plane comprised of a...
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7561527 |
Bidirectional forwarding detection
A protocol for detecting faults in a bidirectional path between two forwarding engines, where parts of the bidirectional path checked may include interfaces, one or more data links, and to the...
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7545750 |
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...
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7519002 |
Method of switching between multiple call signaling protocol stacks in a voice quality tester and apparatus using same
A system and method to test voice quality over a call path on a packet based network. A call signaling path is established between a first voice quality tester (VQT) and a second VQT. The call...
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7519001 |
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...
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7518988 |
Ring switchover method
A fast ring switchover is enabled in packet level processing at the time of ring configuration, and as a result, a system switchover function can be implemented in an Ethernet switch or the like by...
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7516048 |
Externalized metric calculation engine
Calculating, detecting, observing, and validating operating characteristics, conditions, and metrics, especially quality of service metrics, of a system. The quality of service metrics are reported...
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7515897 |
Communication apparatus
If a control section fails to detect a connectable device by Inquiry/Page_Scan before an OFF timer times out, the control section halts the Inquiry/Page_Scan. The control section keeps this state...
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7515531 |
Apparatus and methods for the communication and fault management of data in a multipath data network
An apparatus and methods are provided for the communication of a data stream and management of faults in a multipath data network having a protected ring-in-ring network architecture. The data...
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7515528 |
Host fail-over switch presence detection compatible with existing protocol and host controllers
A method and apparatus for detecting a presence of a fail over switch is described. In one embodiment, during an Serial ATA sequence initialization handshake, a host transmits a COMRESET to a...
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7512127 |
Backplane interface adapter
A backplane interface adapter for a network switch. The backplane interface adapter includes at least one receiver that receives input cells carrying packets of data; at least one cell generator...
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7505415 |
Performance monitoring in a communications network
A method of performance monitoring and a processor for performance monitoring in a communications network are provided. A signal is monitored over time by allocating a current signal quality...
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7483998 |
Software configurable cluster-based router using heterogeneous nodes as cluster nodes
A cluster router architecture and methods for performing distributed routing are presented. The cluster router architecture includes off-the shelf Personal Computer (PC) hardware-based router...
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7483383 |
Stack manager protocol with automatic set up mechanism
A stack switch for performing pass-through forwarding operations, assigning stack switch identifiers to a plurality of stack switches, temporarily disabling supervision messages exchanged by stack...
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7483381 |
Remote testing access
An embodiment of the invention includes a method of operating a remote testing access system. The method comprises receiving a test request from a test device over an incoming time division...
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7471679 |
Method and apparatus for receivability and reachability test of explicit multicast
The present invention relates to method and apparatus for receivability test and reachability test of explicit multicast packet. In one embodiment, the xcast receivability test comprises i) at a...
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7468949 |
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...
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7466656 |
Method, apparatus and program storage device for efficient construction of network overlays through interconnection topology embedding
Methods, apparatuses and program storage devices for constructing a network overlay via embedding an interconnection network in a network overlay graph are provided herein. The network delay...
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7460484 |
Lawful intercept of traffic connections
Apparatus and method are provided for dynamically establishing lawful interception taps within connection-oriented communication networks. Taps are established automatically upon establishment of a...
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7460470 |
Systems and methods of priority failover determination
Systems and methods or implementing priority failover determination are disclosed. An exemplary method includes prioritizing ranking criteria for plurality of network adapter ports based at least...
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7457310 |
Method and arrangement for the remote-controlled testing of a specimen
Disclosed are a method and an arrangement for the remote-controlled testing of a specimen, the data of the control unit and the specimen being supplied in a format that corresponds to a...
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7457235 |
High resiliency network infrastructure
A resilient interface architecture may include at least two interface switches and at least two interface routers. The at least two interface switches may provide connectivity between a subnetwork...
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7454494 |
Apparatus and method for actively analyzing a data packet delivery path
A packet transmission diagnostic system transmits diagnostic packets during a communications session in which data packets are transmitted between a source and destination. The diagnostic packets...
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7450519 |
Auto-negotiation monitor system, repeating-transmission apparatus, and auto-negotiation monitor method used therefor
Where each of switches opposed to each other detects optical-signal shutoff or optical-signal deterioration on the reception side of its port, the switch brings a link of the port down and outputs...
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7433301 |
Method of transferring packets and router device therefor
A router in a backup path in an MPLS network adopting a label stack method aims to achieve the same quality-guarantee control as the one performed in a current path. In a packet transfer device...
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7428212 |
Best effort technique for virtual path restoration
A method and apparatus for restoring a virtual path are disclosed. The method includes identifying an alternate physical path and determining whether the alternate physical path is able to support...
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7426179 |
Method and apparatus for signaling path restoration information in a mesh network
A method and apparatus are disclosed for monitoring and signaling a path restoration using pre-computed restoration paths following a detected fault on a primary service path in a communications...
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7411914 |
Data ring and method for operating data rings
A data ring has two or more disconnectable nodes and a monitoring device for monitoring and driving the nodes. Appliances that communicate with one another can be connected to the nodes. The data...
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7391723 |
Frame-level fibre channel CRC on switching platform
A method and apparatus is presented for performing a sequence-level CRC calculation on fiber channel communications within a switching platform domain. A CRC generator searches the data...
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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...
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7385931 |
Detection of network misconfigurations
A system includes a communication network having any number of separately addressable elements. An analysis device can test packet data paths between these elements by eliciting particular traffic...
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7385930 |
Packet discard point probing method and device
In a relay device or the like in which a speed changes from a high speed to a low speed, a packet residence (packet transfer wait) occurs when a packet string in which packet intervals are...
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7385929 |
Method and system for detecting false packets in wireless communications systems
Specific bits of an incoming transmission are compared against a predetermined bit pattern. If the selected bits do not match the predetermined bit pattern, then the incoming transmission is...
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