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| Number | Title | Issue Date |
| 8184628 | Network based multicast stream duplication and merging In one embodiment, a method includes receiving a join message from a receiver at a receiver edge router, the join message identifying a source and a group, and creating at least two forwarding trees for transmitting multicast data streams comprising duplicate data t... | 05/22/2012 |
| 8179902 | Method and system for automatic generation of route distinguishers for virtual private networks A method and system for automatically generating a route distinguisher for a virtual private network are disclosed. The method includes receiving a virtual private network name and rejecting the virtual private network name if the name comprises a number of bytes gr... | 05/15/2012 |
| 8166205 | Overlay transport virtualization In one embodiment, an apparatus includes one or more internal interfaces in communication with one or more network devices in a first network site through a Layer 2 link, an overlay interface in communication through a Layer 3 link with a core network connected to o... | 04/24/2012 |
| 8165144 | Shaper-scheduling method and system to implement prioritized policing A scheduling method and system for a multi-level class hierarchy are disclosed. The hierarchy includes a root node linked to at least two groups. One of the groups has priority over the other of the groups and comprises at least one high priority queue and at least ... | 04/24/2012 |
| 8151076 | Mapping memory segments in a translation lookaside buffer In one embodiment, a method includes identifying first and second memory segments associated with a process in virtual memory, allocating memory for the first memory segment from a first contiguous physical memory space, allocating memory for the second memory segme... | 04/03/2012 |
| 8140104 | Rapid search for optimal wireless network configuration A search algorithm to find a globally optimal radio plan for a wireless network, including assignments of frequency and transmission power to multiple access points. Two different evaluation metrics are used in order to provide an optimal solution in a reasonable ti... | 03/20/2012 |
| 8121041 | Redundancy for point-to-multipoint and multipoint-to-multipoint ethernet virtual connections A method and system for redundancy in Ethernet Virtual Connections (EVCs) are disclosed. In one embodiment, a method includes transmitting continuity check messages from a node in an Ethernet Virtual Connection connecting at least one root node and a plurality of le... | 02/21/2012 |
| 8102781 | Dynamic distribution of virtual machines in a communication network In one embodiment, a method generally includes monitoring network traffic associated with a first network device comprising at least one of a plurality of virtual machines and determining if a parameter exceeds a predefined threshold at the first network device. If ... | 01/24/2012 |
| 8036139 | Internal BGP downloader Improved systems and methods for distributing interdomain routing information within an Autonomous System (AS). A protocol extension to BGP, iBGPd (internal Border Gateway Protocol downloader), has been developed to replace IBGP in distributing BGP interdomain routi... | 10/11/2011 |
| 8024478 | Identifying network path including network proxies A method and system for identifying a network path between a source node and a destination node are disclosed. In one embodiment, the method includes generating a proxy trace message at the source node, transmitting the proxy trace message over the network path towa... | 09/20/2011 |
| 7995525 | Spatial division multiple access for wireless networks Multiple Input Multiple Output (MIMO) technology in conjunction with the IEEE 802.11 standard enables simultaneous communication of data packets to or from multiple users in the same frequency. Spatial divisional multiple access (SDMA) is thus provided. In this way,... | 08/09/2011 |
| 7986689 | ICMP with IP routing instance information A method and system for providing routing instance information are disclosed. In one embodiment, the method includes receiving a trace packet at a network device, generating an Internet Control Message Protocol (ICMP) packet in response to the trace packet, and tran... | 07/26/2011 |
| 7986618 | Distinguishing between link and node failure to facilitate fast reroute Systems and methods for distinguishing a node failure from a link failure are provided. By strengthening the assumption of independent failures, bandwidth sharing among backup tunnels protecting links and nodes of a network is facilitated as well as distributed comp... | 07/26/2011 |
| 7969998 | Method and system for tunneling data using a management protocol A method and system for providing network management communication between a plurality of network elements are disclosed. A method includes creating a tunnel configured for transmitting data between the network elements and transmitting network management informatio... | 06/28/2011 |
| 7948991 | Broadcast and multicast transmissions with acknowledgement scheduling In one embodiment, a method includes scheduling acknowledgements from a plurality of receivers in a wireless network, transmitting an acknowledgement schedule to the receivers, broadcasting or multicasting data to the receivers, processing acknowledgements received ... | 05/24/2011 |
| 7944860 | Preventing loss of network traffic due to inconsistent configurations within the network In one embodiment, a method includes receiving at a processor at a node, notification of an error in a VLAN to topology mapping at the node, receiving a multi-destination packet from the VLAN in the VLAN to topology mapping, the multi-destination packet including a ... | 05/17/2011 |
| 7940661 | Dynamic link aggregation A method and apparatus for dynamically distributing traffic over links grouped together in a data transmission channel are disclosed. In one embodiment, the method includes receiving data at the network device, distributing the data over a first array, mapping the f... | 05/10/2011 |
| 7936667 | Building backup tunnels for fast reroute in communications networks In one embodiment, a method includes identifying at a node, a destination for which a primary path is defined between the node and the destination, transmitting a request message to a neighbor node for routing information for a backup path between the node and the d... | 05/03/2011 |
| 7930616 | Variable forward error correction for optical communication links A method and system for setting a variable forward error correction overhead in an optical transport network frame for an optical link at a node are disclosed. In one embodiment, a method includes selecting a forward error correction overhead, signaling an optical n... | 04/19/2011 |
| 7929412 | Media access control for MIMO wireless network An apparatus and method for operating a Multiple Input Multiple Output (MIMO)-capable subscriber node are disclosed. In one embodiment, an apparatus includes a MIMO-capable physical layer transceiver and a Medium Access Control (MAC) layer block that measures a rece... | 04/19/2011 |
| 7921219 | Maintaining protocol adjacency state with forwarding failure In one embodiment, a method generally includes establishing a routing protocol peer relationship and a Bidirectional Forwarding Detection (BFD) session with a neighbor node, receiving a DOWN BFD event signal from the neighbor node, and maintaining a routing protocol... | 04/05/2011 |
| 7920468 | Method and system for constraint-based traffic flow optimisation system A method of calculating traffic values in a communications network (1), the communications network comprising a plurality of nodes (2,4), the nodes being connected to one another by links (24), the method comprising: (a) obtaining traffic data m... | 04/05/2011 |
| 7917159 | Method and apparatus for controlling a quiet zone for wireless units In one embodiment, a device in an IP-based cellular wireless communication system includes a monitoring arrangement and a sender arrangement. The monitoring arrangement arranged to detect a location of a cellular phone device with respect to an area of restricted ac... | 03/29/2011 |
| 7903573 | Method and system for network traffic matrix analysis A method and system for calculating data traffic flow in a communications network are disclosed. The communications network comprises a plurality of nodes including a plurality of source nodes, a plurality of destination nodes, and a plurality of intermediate nodes.... | 03/08/2011 |
| 7899928 | Efficient multicast packet handling in a layer 2 network Efficient multicasting within a layer 2 network is provided. Participation by a layer 3 router is not required. The spanning tree created by common layer 2 networking protocols is exploited for multicast signaling and traffic handling. ... | 03/01/2011 |
| 7898973 | Convergence measurement in computer network A system and method for measuring convergence performance in a network are disclosed. In one embodiment, the method includes receiving a plurality of probes at a network device, temporarily storing data from at least a portion of the received probes and deleting at ... | 03/01/2011 |
| 7885410 | Wireless security system and method A method for providing private sidestream transmissions between a first and second client in a wireless network generally includes sending a location discovery request from a first client to an access point and receiving a location discovery response from the access... | 02/08/2011 |
| 7881209 | Method and system for protecting communication networks from physically compromised communications A method and system for protecting a packet switched network from compromised communications due to a physical intrusion in the network are disclosed. The network includes at least one network element having a detection device operable to detect a possible physical ... | 02/01/2011 |
| 7849333 | Inline power allocation for power over Ethernet applications A method and system for requesting inline power at a powered device coupled to power sourcing equipment in a communications network are disclosed. The method includes drawing power corresponding to a requested power level at the powered device, operating the powered... | 12/07/2010 |
| 7848249 | Method for computing FRR backup tunnels using aggregate bandwidth constraints Systems and methods for estimating aggregate bandwidths of primary traffic flows are provided. Tighter upper bounds on aggregate bandwidths for arbitrary combinations of primary traffic flows may be computed. These tighter bounds are highly useful in configuring bac... | 12/07/2010 |
| 7864712 | Preventing loops in networks operating different protocols to provide loop-free topology A method and system for preventing loops in a network including network devices operating different protocols for providing loop-free topology are disclosed. In one embodiment, a method includes receiving link state information at a network device operating a first ... | 01/04/2011 |
| 7860093 | Fast multicast convergence at secondary designated router or designated forwarder In one embodiment, a method includes receiving at a network device designated as a secondary designated router or forwarder, an indication that a receiver wants to join a multicast group, transmitting a multicast join message in response to the received indication, ... | 12/28/2010 |
| 7852748 | Method and system for providing voice QoS during network failure A method and system for providing QoS in a network after a network failure are disclosed. The network includes at least one primary tunnel and at least one backup tunnel protecting a segment of the primary tunnel. The method includes receiving notification of a fail... | 12/14/2010 |
| 7835267 | Dynamic path protection in an optical network A method and system for dynamic protection of virtual links for paths of an optical network in communication with an IP network are disclosed. The method includes establishing two or more paths within the optical network and grouping the paths in a dynamic bundle. T... | 11/16/2010 |
| 7827457 | Decoding data from multiple sources Systems and methods for sharing a single decoder among data streams originating with multiple sources. Error correction coding techniques are modified to facilitate decoding of data from multiple sources multiplexed in the time domain at the decoder input. A single ... | 11/02/2010 |
| 7826348 | Multicast fast reroute A method and apparatus for fast reroute of multicast data are disclosed. In one embodiment, a method includes transmitting a multicast join message from a receiver towards a source on a primary path and transmitting an alternate multicast join message from the recei... | 11/02/2010 |
| 7821981 | Satellite switch communication over a network A method for interconnecting a satellite switch and a virtual switch for communication over a network includes transmitting a multicast packet containing a satellite identifier over the network and receiving a response multicast packet containing the satellite ident... | 10/26/2010 |
| 7813385 | Adaptive link delay management in wireless link systems Systems and methods for adapting IEEE 802.11 wireless communications for environments involving long propagation delays. Improved system throughput and stability are provided. Propagation delays are measured systematically and used to adjust contention timing bounda... | 10/12/2010 |
| 7808919 | Network monitoring using a proxy A method and apparatus for network monitoring using a proxy are disclosed. In one embodiment, a method generally comprises receiving at a proxy, path information for a label switched path (LSP) from a forwarding device located in the LSP, generating a connectivity v... | 10/05/2010 |
| 7807109 | Parallel batch reactor with pressure monitoring Described is a parallel batch reactor for effecting chemical reactions. The parallel batch reactor includes a plurality of reactor vessels for receiving components of a reaction, an inlet port for receiving pressurized fluid, and a plurality of valves configured to ... | 10/05/2010 |
