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8467289 |
Optimized fast re-route in MPLS ring topologies
A method performed on a network element employing Multi-protocol Label Switching (MPLS) to optimize bandwidth in a ring topology network including a back-up Label Switch Path (LSP) for a protected...
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8462795 |
Method and device for transmitting control message based on multi-ring ethernet
A method and device for transmitting a control message based on a multi-ring Ethernet are provided, wherein the method comprises the following steps: control virtual local area networks of a main...
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8462805 |
Graceful restart method of router, router and communication network thereof
A graceful restart (GR) method of a router, and a router and a communication network thereof are provided. The method includes the following steps. A control plane enters a GR state. Label switched...
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8456982 |
System and method for fast network restoration
An approach is provided for enabling fast network restoration. A node, within a network of multiple protocol label switching (MPLS) nodes, detects a failure condition affecting the node. A...
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8433191 |
Optical channel intelligently shared protection ring
An optical ring network has one or more working wavelengths and multiple protection wavelengths adapted to support the working wavelength(s). Routing tables may be used in network nodes to assign...
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8406127 |
Precedence-based routing/re-routing
Precedence-based routing/rerouting algorithms or methods that work proactively and locally at each network node that engenders a collective restoral behavior that is uniquely rapid and...
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8401684 |
Audio signal processor and network system
In the case where an audio network system that performs transport of audio signals between a plurality of processors is constructed such that the plurality of processors each including two sets of...
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8339992 |
System and method to provision MPLS/VPN network
Systems and methods of automatically determining a set of route targets is provided. The method includes receiving network topology data specifying configuration of a network. The method also...
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8305881 |
Method and system for maximizing wavelength reuse in optically protected WDM networks
A method and system for maximizing wavelength reuse in an optically protected wavelength-division-multiplexed (WDM) network, the WDM network supporting a plurality of service connections, includes...
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8264952 |
Method and apparatus for providing packet ring protection
For a ring protection method in a packet transport network a failure is detected at a first network node (N4) in the ring (1, 2). The failure is communicated along the ring (1, 2) using an...
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8243590 |
Method and system for seamless dual switching in a port bypass controller
Certain aspects of the invention for seamless port bypass controller operations for storage systems, for example, and may comprise a first port of a port bypass controller that receives an input...
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8230146 |
Communication method and master-slave system for a field bus configured according to the AS-interface standard
A communication method and a master-slave system, for a field bus configures according to the AS-interface standard, are disclosed. Such a master-slave system for a field bus configured according...
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8218965 |
Optical failover routing
Apparatuses, systems, and methods of routing data through an optical network are disclosed. One such method includes transmitting optical data via a first fiber optic network from an originating...
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8200850 |
Method, apparatus and computer program product for ring network communication
Communication modules are coupled in a communication ring and are operable to send and receive data from peripheral devices. The modules are operable to send and receive data streams on paths of...
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8179786 |
Dynamic traffic rearrangement and restoration for MPLS networks with differentiated services capabilities
At least one substitute path is provided in place of a plurality of existing paths of a network to reallocate traffic carried by the plurality of existing paths. The total bandwidth needed to carry...
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8154994 |
Header conversion technique
A header conversion device allowing reduced amount of hardware and memory and high-speed line switching is disclosed. In an ATM switching device having redundant incoming line systems, a header...
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8149693 |
Method of implementing association in automatic switched optical network (ASON)
A method of implementing association in an Automatic Switched Optical Network. When an initial node of the 1+1 protection service is outside the ASON, it associates the primary service and the...
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8139936 |
Method and apparatus of routing convergence in control plane of an intelligent optical network
The embodiments of the invention provide a method of routing convergence in a control plane of an intelligent optical network, which includes: a function unit perceiving a service link state...
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8131151 |
Testing and measurement in optical networks
An optical node may include a plurality of optical input components operable to receive a plurality of signals communicated in an optical network and a plurality of optical output components...
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8103161 |
Method, device and system for group optical channel shared protection
The present invention discloses a method and system for group optical channel shared protection. In the invention, when a failure occurs, operations are performed on an optical wavelength group,...
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8089865 |
Multicast path management and protection
Provided is a multicast path management method for a connectionless communication. Also provided is a path protection function which is effective when a path has failed. A network is formed by a...
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8085670 |
Method and system for originating connectivity fault management (CFM) frames on non-CFM aware switches
A system for originating connectivity fault management (CFM) frames on non-CFM aware switches is disclosed. In the disclosed system, an OAM (Operations Administration and Management) proxy...
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8072878 |
Packet ring network system, packet transfer system, redundancy node, and packet transfer program
In a ring network to which a plurality of nodes are connected, even though a failure occurs in a link between a node and a client apparatus (a user terminal) or a node itself, communication between...
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8055765 |
Service take-over method based on apparatus disaster recovery, service transfer apparatus and backup machine
A service take-over method based on apparatus disaster recovery, the method includes: transferring, by a service transfer apparatus, a service control message originally sent to a production...
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8031589 |
Metropolitan area local access service system
A local access fiber optical distribution network is disclosed in which a dedicated pair of diversely routed optical fibers is routed in the distribution network for each customer. In a preferred...
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8018842 |
Counter multi-failure system and common link terminal device used therein
Arrangements dealing with multiple link failures occurring in a communication network including a first ring and a second ring connected to the first ring by sharing part of a link in the first...
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8014276 |
Scheduling system and scheduling method for the same
A scheduling system may include a read sequence management table that includes a group of positions for arranging data received from a group of lines and a schedule management table to store a...
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8004967 |
Ring network routing method and ring network node
The present invention discloses a method for routing in a ring network, the ring network comprising multiple connected nodes, wherein, the method includes: each node in the ring network acquiring...
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8000232 |
Method for controlling redundancy and transmission device using the same
A redundancy control method is disclosed that controls a first redundancy function that switches between a working line and a protection line in response to a detection of a line error and a second...
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7990851 |
Method, apparatus and computer program product for redundant ring communication
Sets of communication modules each have a pair of ring-channel ports for a ring-configured channel in a network, a peripheral device port for peripheral device data, and dual-ring ports for an...
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7987313 |
Circuit of on-chip network having four-node ring switch structure
A hierarchical ring architecture is constructed with on-chip networks. The on-chip network includes two type-0 ring nodes and two type-1 ring nodes. Multiple data transfer is provided in parallel...
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7975064 |
Envelope packet architecture for broadband engine
A mechanism provides for sending an envelope and replying to an envelope. A transmitter is configured to send an envelope. A receiver is coupled to the transmitter, wherein the receiver is...
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7974185 |
Three fiber line switched ring
A 3 fiber line switched ring (3FLSR) provides protection for (optical) transmission networking wherein N nodes are connected via 3 lines (or optical fibers) in a ring topology. Two of the three...
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7965658 |
Shortening of communication cutoff time
A topological information management frame is classified based on the contents stored in the topological information management frame, and information stored in a database is updated based on the...
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7961596 |
Ring-shaped redundant communication path control method
In a ring redundant communication path control method, each of transfer apparatuses periodically transmits an inspection frame for inspecting a communication path, detects a failure of the...
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7957269 |
Method and system for synchronization of packet
A message synchronization demarcation method includes: a backup board receives a message of an opposite terminal from an interface board; the message is copied to a main board; the main board...
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7929427 |
Ring rapid spanning tree protocol
In a method for enabling facilitation of re-convergence, designation information for a first port of each one of a plurality of bridges in a multi-bridge ring is received and designation...
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7925126 |
Fiber sensing system with self-detection mechanism
The present invention discloses a fiber sensing system with self-detection mechanism which utilizes a central office to control secondary ring architecture formed by fiber sensor, remote node and...
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7920465 |
Method and apparatus for transmitting the control signal of resilient packet ring media access control
The present invention provides a method and apparatus for transmitting control signal of Resilient Packet Ring (RPR) Medium Access Control (MAC), including: encapsulating a control signal of RPR...
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7916668 |
Spanning tree protocol with burst avoidance
An apparatus and method for controlling bridge protocol data unit bursts is disclosed. The invention in the preferred embodiment is a switching device with a port enabled with a link management...
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7911940 |
Adaptive redundancy protection scheme
A redundancy protection scheme comprises sending a protection packet from the primary network interface to the secondary network interface, the protection packet having a hardware address of the...
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7907549 |
Modeling a ring network using a ring object
Modeling a ring network of a network system includes creating a ring object that models the ring network. The network system includes a network element that has components. The ring object includes...
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7903586 |
Ring rapid multiple spanning tree protocol system and method
In an embodiment, a method is disclosed for operating a network having a group of bridges connected together to form a ring, each bridge having two ports assigned to the ring to form a group of...
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RE42095 |
Method for transferring utility optical signals and optical-line network
The control of the transmission of useful optical signals on different line paths of an optical transmission device is accomplished via at least one of the following features: using signal sources...
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7843813 |
Managing hierarchically organized subscriber profiles
Apparatus are provided for managing hierarchically organized subscriber profiles. According to one embodiment, a router includes multiple virtual interfaces and a policy engine. The virtual...
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7840133 |
Method and system for hybrid protection in optical networks
A technique for carrying out protection of data traffic in a multi-channel multi-section optical communications network by simultaneously using Optical Multiplexed Section (OMS) protection and...
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7839952 |
Data rate coordination in protected variable-rate links
A method for communication includes sending first data over a first communication link to a destination communication system at a first data rate, which can be varied. Second data, including at...
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7828209 |
Electronic payment terminal diagnostics
The ‘IP Diagnostics’ software is a new and innovative method of aiding the deployment and troubleshooting of IP enabled POS terminals. Its purpose is to identify where a failure in the IP con...
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7792132 |
Framer/mapper/multiplexor device with 1+1 and equipment protection
In one embodiment, the present invention is a framer/mapper/multiplexor (FMM) device that can simultaneously (i) send protection copies of both its working incoming high-speed (e.g., STS-12) signal...
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7792054 |
IP backbone network reliability and performance analysis method and apparatus
This invention provides a tool for reliability evaluation and performance analysis of an IP backbone network by using the network packet loss ratio as the main measurement. A queuing model and...
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