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7623533 |
Switch meshing using multiple directional spanning trees
In a packet-based switch, a method for managing data flow between the switch and other switches that are interconnected in a mesh network. The method includes receiving at the switch a topology...
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7620730 |
Method for multicasting a message on a computer network
A method for multicasting a message in a computer network is described, in which at least some nodes of a multicast group transmit fault recovery information to other nodes of the group in addition...
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7619993 |
Efficient probabilistic duplicate packet detector in computer networks
In order to solve the problem of the detection of the arrival of duplicate data packets in an interconnected, multinode data processing system, each data packet is provided with a field of r bits...
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7619992 |
Low latency working VPLS
A system and method are provided for forwarding packets through a fully meshed communication network when the destination MAC address may not be known. Each network element maintains a mapping of...
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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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7616590 |
Distributed tempero-spatial query service
A distributed tempero-spatial query service uses a plurality of service agents each having an assigned area of responsibility. The service agents are organized into a spatial hierarchy based upon...
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7616589 |
Virtual LAN creation device
A spanning tree creation unit creates a plurality of spanning trees based on the network topology, and registers the spanning trees to a spanning tree information table. A spanning tree selection...
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7613134 |
Method and apparatus for storing tree data structures among and within multiple memory channels
Methods and apparatus are disclosed for storing tree data structures among and within multiple memory channels, which may be of particular use with, but not limited to tree bitmap data structures....
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7613133 |
Method, system and computer program product for processing packets at forwarder interfaces
A system and method for processing information transport elements, such as ethernet packets, at interfaces to a forwarder. Modules that implement processing logic are allocated per interface and...
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7610429 |
Method and system for determining device criticality in a computer configuration
A method for determining the criticality of a device in a multi-path computer configuration comprising the steps of: traversing a directed acyclic graph representing a platform hierarchy; and...
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7609658 |
Method and system for identifying instability or a spanning tree protocol loop in a network
Methods and systems for identifying instability or a loop in a network. In one method, a first BPDU message is received at a switch indicating a topology change. The message includes a bridge...
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7609655 |
Facilitating topology change functionality when regional root information changes
A method for providing Topology Change functionality in a Local Area Network (LAN) comprises a plurality of operations. An operation is performed for determining that a Multiple Spanning Tree...
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7609624 |
Method and apparatus for pre-provisioning networks to support fast restoration with minimum overbuild
Improved network design techniques are provided. For example, a technique for designing a protection capacity to be reserved in a network comprises the following steps/operations. One or more link...
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7606178 |
Multiple wireless spanning tree protocol for use in a wireless mesh network
An apparatus for, a method of, and a computer carrier medium carrying code to cause a processor to execute a method. The method includes running a plurality of instances of a wireless spanning tree...
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7606177 |
Value-added features for the spanning tree protocol
A method and apparatus facilitates and enhances the operation of the spanning tree protocol in bridged computer networks. An intermediate network device in accordance with the present invention...
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7602738 |
Process for generating and updating a hierarchical tree in a MANET multicast routing protocol ad hoc network
A MANET multicast proactive routing protocol ad hoc network is designed to implement a process dedicated to the generating and updating of a “child/parent” hierarchical tree. This process...
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7599385 |
Method and apparatus for providing composite link assignment in network design
A method and apparatus for composite link assignment are provided such that network capacity is sufficient to handle all the traffic (e.g., load) while an objective function, e.g., the total cost...
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7599312 |
Withdrawing multiple advertised routes based on a query defined in a withdraw message which may be of particular use in border gateway protocol
Routes are withdrawn based on a query defined in a withdraw message. One or more route update messages identifying multiple routes with associated attributes and Type-Length-Values (TLVs) are...
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7599284 |
Restartable spanning tree for high availability network systems
A method and apparatus for continuing the operation of a spanning tree protocol at a network device despite crashes or failures at that device is disclosed. The network device includes a plurality...
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7596101 |
Device, network, and system for forwarding frames between geographically dispersed user networks
A frame forwarding system which has a plurality of frame forwarding devices and links to transport frames between external networks that belong to a particular group. This system is designed to...
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7593377 |
Route optimization for a mobile IP network node in a mobile ad hoc network
A clusterhead of a tree-based, mobile ad hoc network includes a mobile IP proxy resource for registering a received binding update request from a mobile ad hoc router within the network, creating a...
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7593353 |
Methods and apparatus for content delivery via application level multicast with minimum communication delay
A method for constructing an overlay multicast tree to deliver data from a source to an identified group of nodes is provided in which a plurality of nodes are identified and mapped into...
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7593341 |
Method and apparatus for updating a shortest path graph
A method and apparatus for updating a shortest path graph or a shortest path tree are disclosed. For example, an arc weight is changed for an arc in the network, where a plurality of affected nodes...
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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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7584352 |
Protection against denial of service attacks
An information processing system for protecting against denial of service attacks comprises an interface ( 310 ) to receive and send packets, wherein the packets comprise at least one...
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7580372 |
System and method for implementing multiple spanning tree protocol automatic 802.1Q trunking
System and method for performing automatic trunk formation in a multiple spanning tree protocol (“MSTP”)-enabled bridge comprising a plurality of ports are described. In one embodiment, the...
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7577139 |
Disaggregated star platform management bus architecture system
A star topology platform management bus architecture and system that provides disaggregation of the platform control element portion and the routing element portion of a central management...
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7577106 |
Method and apparatus for managing a transition for a class of data between first and second topologies in a data communications network
A method is disclosed of managing a transition for a class of data between first and second topologies in a data communications network comprising a plurality of nodes and supporting multiple...
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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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7570605 |
Multicast data trees for multicast virtual private networks
Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with...
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7570604 |
Multicast data trees for virtual private local area network (LAN) service multicast
Principles of the invention are described for providing virtual private local area network service (VPLS) multicast instances across a public network by utilizing multicast trees. In particular,...
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7565435 |
Method for obtaining the best connectivity achievable within virtual local area networks
A method is described herein for configuring a computer network managed by the IEEE Std 802.1s™-2002 MSTP standard or any other equivalent standard such as IEEE Std 802.1Q™-2003 in a fully- or...
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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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7564806 |
Aggregate multicast trees for multicast virtual private networks
Principles of the invention are described for providing multicast virtual private networks (MVPNs) across a public network that are capable of carrying high-bandwidth multicast traffic with...
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7564779 |
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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7562143 |
Managing escalating resource needs within a grid environment
A job is submitted into a first selection of resources in a grid environment from among a hierarchy of discrete sets of resources accessible in the grid environment. Discrete sets of resources may...
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7558219 |
Multicast trees for virtual private local area network (LAN) service multicast
Principles of the invention are described for providing virtual private local area network service (VPLS) multicast instances across a public network by utilizing multicast trees. In particular,...
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7558218 |
Method and system for finding shared risk diverse paths
A method and system for finding shared risk diverse paths is disclosed. The method includes receiving route information at a node and running a shortest path algorithm to identify a first path. A...
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7554978 |
System for accessing content-addressable memory in packet processor
A system for accessing a content-addressable memory in a packet processing system is described. A register holds a data element having a key field. Logic derives a value of the key responsive to 1)...
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7551572 |
Systems and methods for providing variable protection
The systems and methods maintain varying protection levels of related objects, such as when nodes of a data structure are protected at the same or greater protection level as their children nodes....
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7551571 |
Technology for improving STP protocols in ethernet networks supporting VLANs
A method for utilizing a Spanning Tree Protocol (STP) in an Ethernet network wherein a number of VLANs are defined and a plurality of Ethernet switching nodes (A, B, C D E, F,G H) are...
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7551552 |
Method for providing guaranteed distributed failure notification
A guaranteed distributed failure notification method is described, wherein a failure notification (FN) facility allows applications using the facility to create FN groups to which the application...
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7545757 |
STP root guard
A method of managing a computer network switch is disclosed. The method has the steps of: setting a port of the switch to root guard protected status (RG status); selecting by a spanning tree...
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7545756 |
Method and apparatus for constructing a forwarding information structure
A method of constructing a forwarding information structure for forwarding data in a data communications network comprising as components and links therebetween comprises the step, performed at a...
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7542470 |
Method and apparatus for routing a packet within a plurality of nodes arranged in a line or a tree given a maximum stack depth
A method and apparatus are provided for routing a packet within a plurality of n nodes arranged in a line or tree (or a combination of the foregoing), given a maximum stack depth, s. A fixed stack...
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7539154 |
Method and apparatus to detect and break loop configuration
In a system having a plurality of nodes such as Ethernet repeaters, coupled by communication links such as cables, systems and protocols are provided for detecting and/or breaking loops. In one...
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7539153 |
Method and apparatus for longest prefix matching based on a trie
The present invention discloses a method and apparatus for longest prefix matching. The method includes (A) reading a current-level trie node (TNODE) in the trie, (B) determining whether an offset...
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7536448 |
Auto-generation of configuration and topology models
Systems and methods are provided for generating an Internetworking Operating System (IOS) Command Line Interface (CLI) configuration model and a logical topology from an IOS CLI configuration base....
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7532586 |
Method of augmenting deployed networks
Method of augmenting a deployed network to include additional network elements. The method includes instructions for determining whether a deployed network is sufficient for supporting existing...
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7529199 |
System and method for resolving conflicts in proxy routing information associated with multicast distribution trees
A first message, received from a first device, identifies a multicast distribution tree and includes first information associated with a route leading to a root of the multicast distribution tree....
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