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7525904 |
Redundant packet routing and switching device and method
A router and method therefore for routing and switching a packet from an incoming link to an outgoing link. The router may include a plurality of network processing units, a plurality of switching...
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7526568 |
Integrated live video production system
Described is a system used in defining and producing a live television broadcast. The system includes one or more control panels, a workstation, a router, and devices. The control panels may be...
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7518983 |
Proxy response apparatus
A proxy response apparatus is equipped with a module that obtains and retains request messages and response messages exchanged between a client and main and backup servers, a module for detecting a...
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7518984 |
IP-PBX, IP-PBX system, IP terminal control program
An IP-PBX has a software-based built-in control unit, a card slot into which a control card is plugged, and a data bus connecting the software-based control unit and the card slot. The...
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7518985 |
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...
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7515529 |
Efficient mechanism for fast recovery in case of border router node failure in a computer network
A technique protects traffic (IP) against the failure of a border router between two domains in a computer network using Fast Reroute and backup tunnels. The border router (i.e., the “protected...
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7515526 |
Dual mode power over ethernet controller
A power over Ethernet controller comprising: management functionality; data send and receive functionality associated with the management functionality; priority determination functionality...
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7515995 |
Continuous median failure control system and method
A redundant control system including at least three redundant signals is presented. The redundant control system includes a failure circuit associated with each of the redundant signals. The...
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7515527 |
SDH transmission apparatus and signal transmission method
An SDH transmission apparatus including a low-speed part, a high-speed part, and a cross-connect part is disclosed. The low speed part includes a first signal transmission part and a second signal...
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7515525 |
Cooperative TCP / BGP window management for stateful switchover
A system and method for performing stateful switchover with reduced data, such as only metadata about a TCP window state. The metadata comprises a size of TCP packets used to send BGP messages, and...
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7512063 |
Border router protection with backup tunnel stitching in a computer network
A technique protects against the failure of a border router between two domains in a computer network using Fast Reroute and backup tunnels. According to the technique, the protected border router...
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7508752 |
Hardware facility switching in cross-connect systems
Techniques for switching facilities in cross-connect systems are provided. Redundant line cards can determine line card path status and insert the path status into the associated data stream. A...
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7505402 |
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...
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7505401 |
Method, apparatus and program storage device for providing mutual failover and load-balancing between interfaces in a network
A method, apparatus and program storage device for providing mutual failover and load-balancing between interfaces in a network is disclosed. An active virtual interface and a passive virtual...
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7505400 |
Dual lane connection to dual redundant avionics networks
Apparatus and systems are provided for dual redundant avionics networks wherein a remote data concentrator (RDC) includes, but is not limited to, a line replaceable unit (LRU) input, a first...
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7492705 |
Changing line cards associated with a communications network
A method and system is provided for replacing a first set of line cards with new line cards. A call-processing unit (CPU) is provided that includes a primary memory unit and a secondary memory...
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7492882 |
C2P provisioning late-breaking scenarios
A system for managing circuit-to-packet provisioning late breaking scenarios. The system comprises an order entry system operable to receive orders for services, each order having a network type...
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7489625 |
Multi-stage packet switching system with alternate traffic routing
In general, in one aspect, the disclosure describes a multi-stage switch having a plurality of ingress switching modules to receive data and to generate frames that are transmitted as a wavelength...
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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...
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7480258 |
Cross stack rapid transition protocol
A cross stack rapid transition protocol is provided for permitting multiple network devices organized as a stack to rapidly transition their ports in response to network changes so as to minimize...
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7477593 |
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...
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7474612 |
Multi-function bypass port and port bypass circuit
An architecture is provided for implementing bypass, repeater and retimer functions in high-speed multi-port SERDES bypass ports and devices. Specifically, this architecture uses clock recovery to...
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7471623 |
Systems and methods for a unified computer system fabric
Disclosed are systems and methods providing a unified system fabric in a computer. The systems and methods of embodiments including first interface disposed between a first component of the...
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7460783 |
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures
Method and apparatus for dynamic provisioning of reliable connections in the presence of multiple failures in optical networks are described. One embodiment is a method for allocation of protection...
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7457233 |
Method and apparatus for fast reroute in a connection-oriented network
A method and an apparatus for rapidly resuming, at times of failures, network traffic in a connection-oriented network by using an alternative route pre-computed and stored locally in nodes along...
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7450496 |
Method for selecting 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...
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7450495 |
Method and system for path change root-cause identification in packet networks
A method and system for identifying the root-cause event that affected a path change in a multi-area Internet protocol (IP) autonomous system (AS) operated according to a link state routing...
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7451252 |
Method for determining the availability of paths to a device
Disclosed is a method 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 existing...
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7447149 |
Virtual interface with active and backup physical interfaces
A network device, such as a router, utilizes a virtual interface to hide the presence of redundant backup physical interfaces from a router control unit. If traffic needs to be redirected from a...
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7443786 |
Apparatus and methods for home agent resiliency for mobile IPv4
Providing resiliency for mobile terminal data sessions, wherein the data sessions rely on Internet Protocol Version 4 and wherein at least one Home Agent node maintains a mobility bindings database...
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7443788 |
Method and apparatus for improving performance of a loop network
A method and apparatus for improving performance of a loop network, in particular a Fiber Channel Arbitrated Loop. The loop network has two loops and a plurality of dual-ported devices each with...
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7440394 |
Method and system for redundant IP forwarding in a telecommunications network
A new feature for a network element or a router is described herein. The feature is implemented in the router as a route manager object. The first function of the feature is realized by trapping...
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7436761 |
Apparatus and method for connecting fibre channel devices via bypass buffers
Apparatus is disclosed for connecting at least a first Fibre Channel device to at least a second Fibre Channel device. The apparatus includes ports, buffers and bypass buffers that are arranged so...
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7430170 |
System and method for implementing protocol stack across multiple chassis
A network gateway element is provided. The network gateway element appears as a single node to the external world, while it physically is maintained in at least two chassis. A routing node handles...
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7430164 |
Path recovery on failure in load balancing switch protocols
A method for managing multiple active paths among a plurality of network switches to identify and select an alternate path in response to failure of a path from a switch to a device. Load balancing...
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7428210 |
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...
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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....
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7423962 |
Redundancy and load balancing in a telecommunication unit and system
The invention relates to backing up a network element (NE) in a telecommunications system. The network element (NE) comprises at least two cluster nodes (A, B, C) that are redundancy units of each...
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7421612 |
Method and system for optimized switchover of redundant forwarding engines
A method of failure recovery in a network element is disclosed. The method includes indicating to a number of forwarding engines that a forwarding engine has completed a switchover operation and...
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7420989 |
Technique for identifying backup path for shared mesh protection
The Resource Reservation Protocol (RSVP) is to gather outgoing interface identification information (e.g., outgoing interface ID's or IP addresses) for each node in a primary path. This information...
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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...
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7415535 |
Virtual MAC address system and method
A method for creating a virtual MAC address, the method includes receiving an Internet Protocol address that is to be associated with a virtual MAC address. The method creates a virtual MAC address...
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7411900 |
Fast restoration for virtually-concatenated data traffic
Techniques are disclosed for restoration of virtually-concatenated data traffic in a data transmission network. A virtually-concatenated group is formed comprising: (i) a plurality of primary...
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RE40451 |
Procedure for ensuring the operation of signalling channels in a V5 interface
The present invention relates to a procedure for ensuring the operation of signalling channels in a V5 interface between a local exchange (LE) and an access node (AN). The interface includes at...
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7406032 |
Bandwidth management for MPLS fast rerouting
Certain exemplary embodiments provide a method comprising: in a network at a node located on a label switched path: selecting a backup path to respond to a failure; and for each link along the...
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7406031 |
Multihop nested tunnel restoration
A network communications tunnel is established by assigning a unique label to each communications link between adjacent nodes in a pre-defined network path. A node's unique label is used to forward...
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7403473 |
Method and apparatus for accelerated protection switching in a multi-switch network element
Accelerated protection switching in a multi-platform network switch may be achieved by allocating connectivity slots from the port cards to the switch cards for all states of a connection through...
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7400575 |
Method, system and service for achieving synchronous communication responsive to dynamic status
A method for routing a communication connection request includes the steps of obtaining context information from a communication connection requester in response to a communication connection...
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7400574 |
Method and apparatus for managing a loop network
A method and apparatus for managing a loop network, the loop network ( 200 ) including at least one loop ( 206, 208 ), a plurality of devices ( 210 ) connected to the at least one loop ( 206, 208 )...
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7397761 |
Routing restorable service-level-guaranteed connections using maximum 2-route flows
A packet network employs restorable routing with service level guarantees. Restorable routing generates two disjoint paths through a network of nodes interconnected by links for a connection...
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