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7619966 |
Hybrid virtual private LAN extensions
This invention is applicable to a Virtual Private LAN service built using multiple point-to-point Ethernet services from a network operator, where the bridging and the transport/tunneling of...
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7617332 |
Method and apparatus for implementing packet command instructions for network processing
A method, apparatus and computer program product are provided for implementing packet command instructions for network processing. A set of packet commands is provided. Each packet command defines...
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7617241 |
Method and apparatus for enhanced hashing
A search key lookup system including a hash table having a plurality of entries and a function generator is disclosed. The function generator can be coupled to the hash table and configured to...
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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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7613106 |
Dial plan transparency for fragmented networks
In one configuration, the present invention is directed to an enterprise network that includes geographically dislocated first and second network regions 202 and 206 communicating with one...
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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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7606143 |
System and method for advanced fail-over for packet label swapping
The present method for advanced fail-over packet label swapping for a packet network having a working path and a protection path, each of the working path and protection path interconnected by a...
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7602705 |
Dual-homing layer 2 switch
One embodiment relates to a method of providing dual-homing in a layer 2 switch. A determination is made as to whether a link is available to an upstream network on for a currently active port. If...
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7602704 |
System and method for providing fault tolerant IP services
A system and method for providing fault tolerant IP services includes establishing a first communication session between an originating telephony device and an application server, through a primary...
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7599285 |
Combined electro-mechanical and solid state switching fabric
According to the present invention, methods and apparatus are provided to allow efficient switching of cable lines from failed line cards to protect line cards. Line cards may be arranged in...
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7593321 |
Method and system for a local and fast non-disruptive path switching in high speed packet switching networks
A method for operating a node in a computer network is disclosed, where the network is made up of nodes connected by links. The method has the steps: determining an alternate path for one or more...
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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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7590051 |
Method and apparatus for redialing a connection on a communication network
Resources used by a connection are released when a connection is terminated, for example due to a failure on the network. When the connection is to be redialed, an indication of the released...
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7586842 |
Failover of multicast traffic flows using NIC teaming
A method of operating a network computer system provides redundant Internet Protocol (IP) Multicast traffic flow on a group of physical ports and comprises virtualizing the group of physical ports...
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7586841 |
System and method for protecting against failure of a TE-LSP tail-end node
A technique protects against failure of a tail-end node of a Traffic Engineering (TE) Label Switched Path (LSP) in a computer network. According to the protection technique, a node along the TE-LSP...
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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...
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7583592 |
Method for route recovery in wireless network of tree topology
A route recovery method in a wireless network of a tree topology, in which a second node, which is a lower node of a first node and is disconnected from the first node, recovers the route in the...
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7583591 |
Facilitating communications with clustered servers
A plurality of servers arranged in a cluster, such as a plurality of blade servers, may communicate with a network over a first communication path. The servers may also communicate with each other...
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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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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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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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7570581 |
Dynamic reduction of route reconvergence time
A router ( 101, 103, 105 ) includes a communication interface, for receiving a packet ( 107 a - 107 f ), when connected to a communication network. The router ( 101, 103, 105 ), for example with a...
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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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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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7561563 |
Communication path setting method and communication path setting system
When a connection request is sent from a telephone terminal, even if it is difficult to set a communication path to the destination telephone terminal only through the packet network, a circuit...
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7548538 |
Telephone call manager
A call management method is provided for giving notification of calls unanswered at a destination telephone number and real-time management options for the unanswered call. When control of a call...
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7539494 |
Inter-site call routing and roaming support
A method ( 600,700 ) and apparatus ( 800 ) are arranged and operate for facilitating call routing between sites in an enterprise connected by a private IP network ( 130 ). A range of identifiers (...
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7535829 |
Tunnel reroute
In a tunnel connecting a source node to a destination node, data transfer for the tunnel is enabled through a first path. The data transfer is enabled by reserving resources in intermediate nodes...
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7535826 |
Routing protocols for accommodating nodes with redundant routing facilities
Graceful restart in routers having redundant routing facilities may be accomplished by replicating network (state/topology) information.
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7532620 |
Routing table synchronization method, network apparatus, and routing table synchronization program
In a network apparatus including a forwarding unit corresponding to a base point for conducting packet transmission/reception with an external network, and plural control units for operating plural...
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7529183 |
Method of setting up a backup path in a transport network
Paths in a transport network are identified by labels (n 1 -n 4 , b 1 -b 4 ) and more than one restoration resources that can be used for setting up a particular backup path form a restoration...
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7518986 |
Push-based hierarchical state propagation within a multi-chassis network device
A multi-chassis network device sends state information to internal consumers within the multi-chassis device via a hierarchical distribution. As one example, a primary master routing engine within...
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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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7515530 |
Detecting loops between network devices by monitoring MAC moves
A technique for detecting a loop between network devices such as customer and carrier edge devices involves counting the number of media access control (MAC) address moves that occur at a device...
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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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7508753 |
Packet redirection and message stream management
A stream manager provides a way of redirecting and managing messaging and information access in a packet network environment. The stream manager is linked to a packet network, such as the Internet....
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7499394 |
System for highly available border gateway protocol
High availability BGP4 is based on redundant hardware as well as redundant software that replicates the RUN state of BGP4. There are two copies, respectively active and backup, of BGP4 running on...
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7496030 |
Managing loops between network devices by monitoring MAC moves
A technique for managing loops between network devices such as customer and carrier edge devices involves monitoring the MAC moves that occur at a device to detect the existence of a loop and...
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7492706 |
Frame synchronization and fault protection for a telecommunications device
According to one embodiment, a telecommunications device includes a bus. A first controller coupled to the bus is operable to generate first pulses for communication using the bus. A second...
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7492704 |
Protocol definition for software bridge failover
A method, data processing system, and computer usable code are provided for protocol definition for software bridge failover. In a first aspect of the present invention, a first software bridge...
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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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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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7463655 |
Method of transmitting data with redundant structure, and device for transmitting data by said method
The present invention provides a data transmission method in which a SONET is applied to Ethernet LANs. This method realizes a redundant structure of the Ethernet while utilizing the bandwidth of...
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7463580 |
Resource sharing among network tunnels
A method for communication includes defining a resource-sharing group including two or more communication paths that traverse at least two different routes through a communication network, the...
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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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7460469 |
Fast rerouting of traffic in a circuit switched mesh network
Technology for rerouting a data stream in a communication circuit switched mesh network comprising one or more cross-connecting nodes, the data stream comprises a plurality of data frames each...
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7457234 |
System and method for protecting communication between a central office and a remote premises
A data communication system for communicating between a central office and a remote premises comprises a first transceiver, a second transceiver, and control logic. The first transceiver is coupled...
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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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