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7619965 |
Storage network management server, storage network managing method, storage network managing program, and storage network management system
In a system which manages path information and status of network with respect to a path being used for access to a storage apparatus and has a redundant path, when a fault occurs in the network,...
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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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7606153 |
Storage system and information processing system
Prior to alteration of the communication route connecting the enterprise servers 5 1 to 5 3 , ports a, b and c of the enterprise server 5 1 are each connected with port 1 of the storage...
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7606142 |
Method and system for shared backup allocation in networks based on partial information
A method comprises allocating a respective restoration path to protect each of a plurality of primary paths in a network. Each primary path has a plurality of nodes and at least two subpaths...
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7603480 |
System using pseudo redundant configurator to switch network devices between operating and standby states
Disclosed is a network system comprising: a plurality of routers 704 and 705 connected to each other through a network; pseudo redundant configuration setting means 702 and 703 which are...
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7602703 |
Method and system for providing ethernet protection
A method is provided for protecting a connection between a multi-service platform (MSP) and a local area network (LAN) that includes providing first and second LAN cards in the MSP. The first and...
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7602702 |
Fast reroute of traffic associated with a point to multi-point network tunnel
Techniques are described for fast reroute of traffic associated with a point to multi-point (P2MP) tunnel. A system may, for example, include a source network device and a plurality of destination...
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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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7599286 |
System and method for achieving path symmetry in an internet protocol (IP) based network
A system and method for improving network performance when communicating between a first site network and a second site network via an IP-based transport network. The site networks include a LAN, a...
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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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7596642 |
System and program for determining the availability of paths to a device
Disclosed is a system and program 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...
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7593320 |
Failover scheme for stackable network switches
A method, apparatus, and computer-readable media for a stackable multi-layer switch comprises a first set of stack units comprising a master stack unit, wherein one of the stack units in the first...
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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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7590050 |
Module firmware recovery
A network access server (NAS) for use in a communications system utilized by users of telephone, fax, or modem calls, the NAS having more than one processor with a plurality of processors forming a...
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7590049 |
System and method for configuring a network element to support protection switching in an optical network
A system and method for configuring a network element to support protection switching in an optical network are described. The network element can operate according to the SONET, SDH, or both...
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7590048 |
Restoration and protection method and an apparatus thereof
A label switching router (LSR) is disclosed in which a control label switched path (LSP) is set up on a route of LSRs, in the reverse direction of traffic, for restoration and protection. Link...
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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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7583590 |
Router and method for protocol process migration
A router and a method for migrating routing protocol processes or Virtual Routers (VRs) from one Route Processor (RP) to another using graceful restart procedures for maintaining packet flow to the...
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7583589 |
Computing repair path information
An apparatus and method is described for computing repair path information around a failure component in a data communications network having a components nodes and links therebetween. Where,...
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7577089 |
Methods and apparatus for fast ETHERNET link switchover in the event of a link failure
An apparatus for fast failure switch over in an ETHERNET switch includes redundant switch (trunk) ports (a main and a backup) and hardware and software logic for redirecting traffic to the backup...
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7577088 |
System and method to backup communication occurring across a plurality of subscriber lines
A communication system comprises a plurality of transceivers and logic. A first transceiver is configured to communicate via a first subscriber line with a transceiver located at a remote premises....
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7574179 |
Mobile broadband wireless network with interference mitigation mechanism to minimize interference within a cluster during multiple concurrent transmissions
A mobile broadband wireless system including at least two pairs of nodes arranged in a cluster, each pair coupled to form a link for wireless communication. Each node includes an RF transceiver...
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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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7570600 |
Overlay network with efficient routing and recovery
A network having a plurality of nodes interconnected by links (virtual communication channels) is disclosed. In one embodiment, the nodes may communicate with each other in a decentralized or...
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7567758 |
Transceiver module and integrated circuit with multi-rate eye openers and bypass
A transceiver module having intergrated eye diagram opening functionality for reducing jitter is describe. The transceiver module may transmitter eye opener and a receiver eye opener integrated in...
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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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7561795 |
Dynamic interlayer protection in optical telecommunication networks
The present invention relates to a method for protecting an optical telecommunication network against possible failures and signal degrades, the network comprising at least two nodes; working...
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7561512 |
Method and system for enhancing crankback handling in multi-peer group networks
A method for enhanced crankback handling in a multi-peer group network. The method includes receiving a first connection request from a node of a first peer group. Upon detection of a call failure...
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7558194 |
Virtual private network fault tolerance
Loss of connectivity on a mesh or virtual service (e.g., VPLS) may be restored by “stitching” a healing path between an affected node and another node on the mesh. Connectivity may be restored...
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7558193 |
Redundancy in voice and data communications systems
Apparatus is used in communicating in a data and voice communication system. The apparatus includes a line card and a crosspoint switch in communication with the line card. The apparatus also...
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7551550 |
Method and system for allocating protection path resources
An embodiment of the invention is a method of allocating protection path resources including obtaining a link vector for a plurality of protection paths. The link vector includes a plurality of...
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7551549 |
Method and apparatus for line card redundancy in a communication switch
A method and apparatus for line card redundancy in a communication switch is presented. The switch includes an arbiter coupled to the input of a switch core and a line card pair. The first line...
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7545737 |
Method for automatically managing a virtual output queuing system
A method for automatically managing a virtual output queuing system in a switching fabric. The method includes detecting if a link is one of a non-operational-link and an operational-link. The link...
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7545736 |
Restoration path calculation in mesh networks
A method for determining a restoration path corresponding to a primary path for a new service in a mesh network involves (1) generating path costs for candidate restoration paths for the new...
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7545735 |
Scalable protection mechanism for hierarchical multicast service in ring based networks
A novel fast and scalable protection mechanism for protecting hierarchical multicast service in ring based networks. The mechanism of the present invention is especially suitable for use in...
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7542412 |
Self-routing, star-coupler-based communication network
A self-routing communication network ( 100 ) having: a plurality of nodes (N 1 -N 15 ); a plurality of star couplers (S 1 -S 4 ) each having a plurality of inputs and a plurality of outputs; and...
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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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7539131 |
Nexthop fast rerouter for IP and MPLS
Methods and apparatus for rerouting network traffic are described herein. In one embodiment, an example of process includes maintaining as a part of a routing table of a network element information...
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7532583 |
Method for integrating downstream performance and resource usage statistics into load balancing weights
In datacenter environments, many copies of servicing components (application servers, http servers, etc) are used to handle larger loads. In these cases, incoming service requests typically go to a...
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7532569 |
Reflector communications channel for automatic protection switching
An apparatus and method for a communications network including at least one interface circuit reads frame data received from the communications network and writes frame data to be transmitted over...
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7532568 |
Geographic redundancy for call servers in a cellular system based on a bearer-independent core network
In a bearer-independent core network, the switching and transport of the bearer streams is separated from the processing of call sessions that control the bearer streams. The switching and...
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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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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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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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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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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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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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