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| Number | Title | Issue Date |
| 8175009 | System and method for generating symmetrical spanning trees In one embodiment, a network device receives on a first port a first spanning tree protocol (STP) control message including a first path-tracking field corresponding to a given spanning tree instance in a network. The first path-tracking field includes a value based... | 05/08/2012 |
| 8165043 | Multiple instance spanning tree protocol A multiple instance spanning tree protocol (MI-STP) creates a plurality of active topologies (i.e., loop-free paths) within a computer network. These active topologies may be established through the exchange and processing of multiple instance spanning tree bridge p... | 04/24/2012 |
| 8155030 | Method and apparatus for network tree management There is disclosed a manner of managing the active topology, that is the scheme for forwarding data, in a computer network such as an Ethernet local area network. A root bridge is selected from a plurality of bridges in the network; the root bridge calculating at le... | 04/10/2012 |
| 8149737 | Method and system for data transmission in a wireless network A method and system for data transmission by computational devices in a wireless network (100) are disclosed. A computational device (102) organizes the wireless network in a hierarchical topology having at least one root node and updates a list of int... | 04/03/2012 |
| 8144628 | Acknowledgement-based rerouting of multicast traffic Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, ... | 03/27/2012 |
| 8144629 | Admission control for services An admission control system is disclosed in combination with a network and a computing system in communication with the network. The computing system is configured to determine a class of service requirement from a service request. The computing system is furnished ... | 03/27/2012 |
| RE43270 | Optimizations and enhancements to the IEEE RSTP 802.1W implementation In an embodiment, a A method for supporting dynamic configuration changes,includes: comprises receiving a message from a current root bridge;, comparing the a bridge media access control (MAC) address of a receiving port to the a bridge MAC address of the received m... | 03/27/2012 |
| 8139510 | Optimizations and enhancements to the IEEE RSTP 802.1w implementation A method for supporting dynamic configuration changes comprises receiving a message from a current root bridge, comparing a bridge media access control (MAC) address of a receiving port to a bridge MAC address of the received message, if the bridge MAC addresses are... | 03/20/2012 |
| 8125930 | Protocol for clock distribution and loop resolution Algorithms and data structure are described for constructing and maintaining a clock distribution tree (“CDT”) for timing loop avoidance. The CDT algorithms and data structure allows a node to make an automated and unattended path switch to the most desirable cl... | 02/28/2012 |
| 8121056 | 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 increased scalability. In particular, the MVPNs may transport layer three (L... | 02/21/2012 |
| 8116235 | Peer-to-peer aided live video sharing system Video data from an upload client is received at a hosting node. A request from a download client is received at a bootstrapping node to receive the video data. The download client to receive the video data directly from the hosting node when the hosting node is belo... | 02/14/2012 |
| 8111633 | 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, the VPLS multicast instances transport layer two (L2) multicast traffic... | 02/07/2012 |
| 8094585 | Membership management of network nodes Nodes of the network are organized into a tree structure having a plurality of vertices. Each vertex of the tree structure comprises a group having a plurality of nodes. Membership information is maintained at each node. The membership information for a given node c... | 01/10/2012 |
| 8089905 | Multicast distribution system and method for distributing data on a mesh virtual network Provided is a multicast distribution system which can perform a multicast distribution by selecting a communication path satisfying a communication feature required by a multicast group. A distribution source router (Rs) performs a multicast distribution to routers ... | 01/03/2012 |
| 8081583 | Method of supporting node portability in sensor network Provided is a method of supporting node portability in a sensor network, wherein data transmission to a portable node can be guaranteed since even when the portable node is assigned with a different address by being associated with another network, the newly assigne... | 12/20/2011 |
| 8068442 | Spanning tree protocol synchronization within virtual private networks Loop detection information, such as information associated with the Spanning Tree Protocol (STP), is synchronized within virtual private networks. A routing protocol, such as the Border Gateway Protocol (BGP), is extended in a manner that allows STP information or o... | 11/29/2011 |
| 8059563 | Assigning slots in a mesh network Assigning slots to nodes in a mesh network. Slot numbers are assigned to nodes in a wireless mesh network using a depth-first search combined with information on 2-hop neighborhoods for each node. Assigning slots using 2-hop neighborhood information allows slots to ... | 11/15/2011 |
| 8054765 | 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. In one embodiment, the nodes store data to track protection levels of... | 11/08/2011 |
| 8045487 | Method for implementing multicast in rapid spanning tree protocol ring network The present invention discloses a method for implementing multicast in RSTP (Rapid Spanning Tree Protocol) ring network. In the method, the port mode of a program is configured to a fixed port mode, a root port binding mode or an upper layer querier port following m... | 10/25/2011 |
| 8045488 | Using spanning tree protocol (STP) to enhance layer-2 network topology maps Spanning Tree Protocol (STP) data is obtained via network switch (SNMP) queries to enhance identification of switch-to-switch links in Layer-2 mapping. In particular, by analyzing the STP data, ambiguity in determining switch uplink ports may be reduced. Specificall... | 10/25/2011 |
| 8040823 | Method and system for network data transmitting A method and system for network data transmitting in a communication system includes transmitting a data from at least one transmission node to at least one receiving node of a transmission-receiving group among the plurality of communication nodes by utilizing a no... | 10/18/2011 |
| 8040824 | 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 multidimensional Euclidean space. A geometric region is constructing having a s... | 10/18/2011 |
| 8036144 | Gateway selection method for wireless mesh network A gateway selection method for a wireless mesh network is provided for selecting an optimal gateway includes building a spanning routing tree to a given network. Reference factors of routers are calculated regarding the network to total network capacity in associati... | 10/11/2011 |
| 8031639 | 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 that are randomly generated for each data packet. However, one of the ... | 10/04/2011 |
| 8023435 | Distribution scheme for distributing information in a network The present invention relates to a method and network node for distributing a network parameter information among network nodes of a transmission network. A spanning tree of routing paths corresponding to the shortest paths from said network node to other nodes is d... | 09/20/2011 |
| 8014320 | Method for discovering the physical topology of a telecommunications network A method and arrangement for discovering the physical topology of a telecommunication network having switches, routers, and a management node interconnected by links in a spanning tree and links to blocked interfaces. The management node broadcasts a ping message an... | 09/06/2011 |
| 8000266 | Shared virtual device ports In one embodiment, a solution is provided wherein multiple virtual devices may be configured on the same physical port of a network device. For example, a first virtual device and a second virtual device may be configured to use the same physical port. A single inte... | 08/16/2011 |
| 8000267 | Network routing with path identifiers One embodiment of the present invention provides a system that communicates a data packet in a network to a target node. In doing so, the system receives a node identifier for the target node, and determines a first positional label, based in part on the node identi... | 08/16/2011 |
| 7986643 | Determining and distributing routing paths for nodes in a network Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with determining and distributing routing paths for nodes in a network. For each route computational node of multiple route computational nodes in a network: a tr... | 07/26/2011 |
| 7978633 | Method and system of updating routing/establishing paths in a hierarchical network A system and method of establishing and routing paths in a network hierarchy is disclosed. A radio base station updates a path from a mobile terminal to a lowest-layer router. The lowest-layer router establishes a path in which a network address to the mobile termin... | 07/12/2011 |
| 7974221 | Efficient content authentication in peer-to-peer networks In one exemplary embodiment, a method includes: providing an abstract tree structure having a root node, tree nodes, and leaf nodes, each leaf node corresponds to a portion of data; mapping first network nodes of a distributed network to the tree nodes; mapping seco... | 07/05/2011 |
| 7974222 | Method and apparatus for providing link-local IPv4 addressing across multiple interfaces of a network node Embodiments of the present invention provide link-local IPv4 addressing across multiple interfaces of a network-node. During operation, the network-node broadcasts an address resolution protocol (ARP) request packet on multiple interfaces which asks for the hardware... | 07/05/2011 |
| 7969914 | Method for establishing and operating a mobile Ad-Hoc network A method for creating an ad-hoc network that assembles a MANET inductively with no need for any node to request any information, needing only to hear information from an ad-hoc group of at least one node, to select its uplink relay node from the group. The resulting... | 06/28/2011 |
| 7969915 | 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) standard, including: receiving, by a root port of a first bridge, a data mess... | 06/28/2011 |
| 7965656 | Building multipoint pseudo wires using a multipoint label distribution protocol (MLDP) A method, apparatus and computer program product for building multipoint Pseudo Wires (PWs) using Multicast Label Distribution Protocol (MLDP) is presented. A multipoint PW leaf identifier (mTAI) is configured on one or more Layer 2 (L2) leaf interface(s) of a multi... | 06/21/2011 |
| 7965657 | Sounding reference signal cell specific sub-frame configuration A method of wireless communication including a plurality of fixed basestations and a plurality of mobile user equipment with each basestation transmitting to any user equipment within a corresponding cell a sounding reference signal sub-frame configuration indicatin... | 06/21/2011 |
| 7961652 | Method for traffic engineering of connectionless virtual private network services A method for traffic engineering of connectionless virtual private network (VPN) services that includes receiving physical connectivity data for a connectionless VPN. The data includes service nodes and links between the service nodes. One or more of the service nod... | 06/14/2011 |
| 7961651 | Method and system for managing energy in sensor network environment using spanning tree A method for managing energy in a sensor network environment using a spanning tree includes the steps of collecting amount of remaining energy of nodes at a predetermined cycle by a base station in a region having a number of clusters a number of nodes forming a spa... | 06/14/2011 |
| 7953027 | Rerouting multicast traffic in response to detecting imminent network disruption Various systems and methods for rerouting multicast traffic in response to detecting imminent network disruption are disclosed. One method involves detecting an imminent topology change and, in response, identifying a new multicast distribution tree for a multicast ... | 05/31/2011 |
| 7948922 | Blocked redundant link-aware spanning tree protocol enhancement An exemplary embodiment provides for a method for use in a network device of a plurality of network devices configured to implement a link management protocol for blocking ports corresponding to redundant links between individual network devices of the plurality of ... | 05/24/2011 |
