Spare Channel Patents (Class 370/228)
  • Patent number: 10382319
    Abstract: Embodiments are directed to facilitate multiple tunnels to be reachable via inter-chassis ling from virtual link trunking (VLT) peers and also to avoid traffic tromboning with an optimal path to all next hops. During initialization, a default egress object is created through an ICL with the next hop defined as VLT peer2 by setting the MAC address to be the MAC address of the VLT peer2, and the VLAN to be any one of the L3 spanned VLANs. When any of the VXLAN tunnels are resolved through ICL LAG, the process uses the default egress object created on ICL. Using the default egress object created on ICL, any traffic from VLT peer1 intended to go through ICL is terminated on VLT peer2 and will get routed again to their respective next hops. This creates a single egress object to the VLT peer and allowing multiple VXLAN tunnels to be reachable through ICL with optimal path towards all next hops.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: August 13, 2019
    Assignee: Dell Products LP
    Inventors: Avinash Natarajan, Damodharan Screenivasaga Perumal, Ramasubramani Mahadevan, Nirupa Venkatapathy, Venkata Gouri Rajesh E
  • Patent number: 10382325
    Abstract: A method is implemented by a network device functioning as a controller in a Software Defined Networking (SDN) network to configure a switch in the SDN network to process packets on behalf of a Service Function Chain (SFC) proxy so that the packets can bypass the SFC proxy. The method includes receiving a translation rule for an SFC encapsulation from the SFC proxy, transmitting SFC proxy bypass instructions to the switch that cause the switch to translate packets belonging to a flow associated with the SFC encapsulation according to the translation rule for the SFC encapsulation and to forward the packets belonging to the flow associated with the SFC encapsulation to a service function while bypassing the SFC proxy, and transmitting an indication to the SFC proxy that the packets belonging to the flow associated with the SFC encapsulation are to bypass the SFC proxy.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: August 13, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Faseela K, Ashutosh Bisht
  • Patent number: 10362117
    Abstract: A network interface devices includes a configuration engine, a mode modification engine, and a switch. The configuration engine defines a static routing configuration for communicating one or more first data packets received from a first processing circuit along a network pathway to a predetermined one or more second processing circuits. The mode modification engine is configured to receive an indication of a networking mode and modify the network pathway based on the indication of the networking mode. The switch is configured to communicate the first data packets along the network pathway.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: July 23, 2019
    Assignee: ROCKWELL COLLINS, INC.
    Inventor: Brent J. Nelson
  • Patent number: 10355969
    Abstract: A computer implemented method for controlling a software defined network (SDN) is disclosed. The method includes providing one or more client portals configured for facilitating users controlling networked devices, generating configuration data based on input received from users via the client portals, and providing a master SDN controller for managing data flow control on the SDN network. The master SDN controller is operable to route data for the networked devices, generate a plurality of discrete co-controllers each associated with a particular end user with each co-controller having configuration data and routing data for an associated networked device, dispatching the co-controllers to the networked devices associated with the respective end users, installing the co-controllers on the networked devices, and registering the installed co-controllers with the master SDN controller for controlling the routing of data and configuration of the networked devices.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: July 16, 2019
    Assignee: KN INSTALL SOLUTIONS (N.IRE) LIMITED
    Inventors: Nazneen Shaikh, Murali Krishnan, Girish Gulawani
  • Patent number: 10356005
    Abstract: An apparatus comprises a plurality of host devices each implementing one or more virtual resources that are migratable between the host devices, one or more networks comprising a plurality of network switches each coupled to one or more of the host devices, and a migration controller associated with one or more of the host devices. The migration controller is configured to monitor utilization of the network switches by their associated host devices and to direct migration of the virtual resources between the host devices based at least in part on the monitored utilization of the network switches. Responsive to detection of a first network switch having a utilization above a threshold, the migration controller identifies a second network switch having a utilization below the threshold and directs migration of at least one virtual resource from a first host devices associated with the first network switch to a second host device associated with the second network switch.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: July 16, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Mohamed Esam, Adel Zalok, Mohammed Hashem, Farah Thakeb, Dina Helmy, Eslam ElNakib
  • Patent number: 10348572
    Abstract: Apparatuses, methods, and systems for dynamic bandwidth allocation are disclosed. One method includes identifying, by a first distribution node of a wireless mesh network, a communication link with a second distribution node of the wireless mesh network, generating, by the first distribution node, a proposed bandwidth allocation schedule for wireless communication of information between the first distribution node and the second distribution node based on data traffic requirements of the first distribution node, wherein the second distribution node receives the proposed bandwidth allocation schedule, and wherein the second distribution node adjusts the proposed bandwidth allocation schedule based upon data traffic requirements of the second distribution node.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: July 9, 2019
    Assignee: Facebook, Inc.
    Inventors: Dong Zheng, Praveen Kumar Gopala, Pradeep Jugraj Nemavat, Adam Joshua Efron
  • Patent number: 10341141
    Abstract: This application discloses a flow entry generating method and apparatus. The method includes: receiving a service path establishment request, where the service path establishment request includes a constraint, a source device, and a target device; finding, in a data transmission network according to a cross-layer information model, a service path that meets the constraint and is from the source device to the target device, where the cross-layer information model is a model that describes, at a same layer, an overall topology relationship between an IP layer and an optical layer; and generating a respective corresponding flow entry for each forwarding device in the service path, and sending the flow entry to a corresponding forwarding device. This application can greatly reduce time complexity of computing the service path, and improve efficiency of computing the service path, thereby improving efficiency of generating a flow entry.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: July 2, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xuefei Song, Yinben Xia, Chao Chen
  • Patent number: 10313155
    Abstract: In one embodiment, an authoritative edge device (AED)-server in a computer network maintains assignment of an active AED for a particular virtual local area network (VLAN), and in response to a triggered re-assignment, sends an AED change request identifying an old active AED for the particular VLAN and a new active AED for the particular VLAN (e.g., and/or corresponding backups). In response to receiving the change request, the old active AED ceases forwarding of traffic for the particular VLAN and transmits a relinquishment confirmation into the network. Also, in response to receiving the change request and the relinquishment confirmation from the old active AED, the new active AED assumes responsibility for traffic forwarding for the particular VLAN and transmits an activation confirmation into the network. The change request is then deemed completed by the AED-sever upon receipt of both the relinquishment confirmation and the activation confirmation.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 4, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Gaurav Badoni, Dhananjaya Rao, Hasmit Grover, Senthil Kenchiah, Vrushali Ashtaputre
  • Patent number: 10305818
    Abstract: Various systems and methods for performing fast fail-over. For example, one method involves electing a first node as a designated forwarder node and electing a second node as a backup designated forwarder node, where the designated forwarder node is used to forward at least a first packet to a downstream node. The method further involves detecting a loss of connectivity between the designated forwarder node and a downstream receiver node, where the designated forwarder node and the backup designated forwarder node are both elected prior to the loss of connectivity occurring. Moreover, subsequent to detecting the loss of connectivity, the method uses the backup designated forwarder node to forward at least a second packet to the downstream receiver node.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 28, 2019
    Assignee: Cisco Technology, Inc.
    Inventors: Neale D. R. Ranns, Ijsbrand Wijnands, Gregory J. Shepherd
  • Patent number: 10285176
    Abstract: A wireless access point to optimize carrier aggregation using beamforming. The wireless access point wirelessly exchanges communication data with User Equipment (UE) over a plurality of frequency bands. The wireless access point identifies a UE using carrier aggregation and identifying a frequency band of the plurality of frequency bands having beamforming capabilities. The wireless access point then allocates the UE using carrier aggregation a Primary Component Carrier (PCC) on the frequency band having beamforming capabilities. In response to the PCC allocation, the wireless access point transfers an indication to the UE indicating the PCC allocation on the frequency band having beamforming capabilities and wirelessly exchanges additional communication data with the UE using carrier aggregation over the frequency band using beamforming.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: May 7, 2019
    Assignee: Sprint Communications Company L.P.
    Inventors: Sreekar Marupaduga, Andrew Mark Wurtenberger
  • Patent number: 10270686
    Abstract: A method of updating conversation allocation in link aggregation is disclosed. The method starts with verifying that an implementation of a conversation-sensitive link aggregation control protocol (LACP) is operational at a network device of a network for an aggregation port. Then it is determined that operations through enhanced link aggregation control protocol data units (LACPDUs) are possible. The enhanced LACPDUs can be used for updating conversation allocation information, and the determination is based at least partially on a compatibility check between a first set of operational parameters of the network device and a second set of operational parameters of a partner network device. Then a conversation allocation state of an aggregation port of the link aggregation group is updated based on a determination that the conversation allocation state is incorrect, where the conversation allocation state indicates a list of conversations transmitting through the aggregation port.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Panagiotis Saltsidis, János Farkas, Balázs Peter Gerö
  • Patent number: 10262545
    Abstract: A system for a vehicle includes a receiver configured to receive input data, and a processor configured to run an optimization algorithm to evaluate the input data. The optimization algorithm includes at least one cost model configured to determine vehicle operational parameters to meet the input data. An output module is configured to output to the vehicle operational parameters that optimize operation of the vehicle in view of the input data.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: April 16, 2019
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventors: Peter James Waltner, John R. Herter, Per Lars R. Stubbendorff
  • Patent number: 10254108
    Abstract: An optical measurement device configured for connection to an industrial network, the industrial network functioning to synchronize time between a master device and a slave device, the optical measurement device includes: an interface module configured to receive a synchronization signal transmitted on the industrial network from the master device within a fixed communication cycle; and a measurement unit configured to perform optical measurements in a measurement cycle. The measurement unit synchronizes when a measurement is taken with the communication cycle in accordance with the synchronization signal received by the interface module.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: April 9, 2019
    Assignee: OMRON Corporation
    Inventors: Koji Shimada, Tomonori Kondo
  • Patent number: 10250695
    Abstract: Aspects of the disclosure relate to error prevention in a communication session traffic environment. One or more embodiments of the disclosure relate to mitigation of processing loops during establishment of a communication session in a network. A network node at the boundary of the network can mitigate processing loops by monitoring formation of such loops and proactively terminating communication processing in response to expiration of a timer. The timer can be initiated in response to formation of a loop.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: April 2, 2019
    Assignee: Comcast Cable Communications, LLC
    Inventors: Sohel Khan, Jon A. Boone
  • Patent number: 10237163
    Abstract: A network device operable as a provide edge router is described. The network device comprises one or more processors operably coupled to a memory; a configuration interface configured for execution by the one or more processors to receive configuration data configuring the network device as a provider edge router of an intermediate layer 3 network to provide multi-homed layer 2 virtual bridge connectivity to a customer edge device using an active-standby mode of operation; and a routing process configured for execution by the one or more processors to send, to a remote provider edge router in response to determining the network device is able to send layer 2 packets to the customer edge device, a route advertisement that includes a static route specifying a layer 3 address of the customer edge device as a next-hop for a layer 3 subnet.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 19, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: Sudhin Jacob, Deepesh Sudhakaran Nair, Sushant Kumar, Arijit Paul, Prasantha Kumar Gudipati
  • Patent number: 10237176
    Abstract: Techniques are described for automatic discovery of two or more virtual service instances configured to apply a given service to a packet in a software-defined networking (SDN)/network functions virtualization (NFV) environment. Virtual service instances may be deployed as virtual entities hosted on one or more physical devices to offer individual services or chains of services from a service provider. The use of virtual service instances enables automatic scaling of the services on-demand. The techniques of this disclosure enable automatic discovery by a gateway network device of virtual service instances for a given service as load balancing entities. According to the techniques, the gateway network device automatically updates a load balancing group for the given service to include the discovered virtual service instances on which to load balance traffic for the service. In this way, the disclosed techniques provide auto-scaling and auto-discovery of services in an SDN/NFV environment.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: March 19, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: Rishi K. Mutnuru, Padmanabha Nallur, Dilip H. Sanghavi, Huei-ping Chen, Narasimha Talapady Nayak
  • Patent number: 10230675
    Abstract: When a message is received, the recipient set in the message, as well as ancestor message identifiers, are analyzed. The received message is either placed in an existing thread in an existing conversation, or in a new thread in the conversation, based upon the analysis of the recipient set and the ancestor identifiers.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: March 12, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Justin B. Mahood, Ryan Gregg, Tali Roth, Giselli Panontini DeSouza Sana, Linda Chen, Rajesh Ramanathan, Rafael Ferreira Barcelos
  • Patent number: 10223247
    Abstract: Generating pseudorandom test items for software testing of an Application Under Test (AUT) is provided. In one example, a method comprises selecting an oracle of one or more oracles within a test provider directory structure, the oracle defining one or more logical paths each comprising one or more test conditions and an expected result. A pseudorandom test item having an initial state of empty is generated, and a logical path of the one or more logical paths is selected. The one or more test conditions of the logical path are translated into a constraint. Based on the constraint, a pseudorandom test input is generated and stored in the pseudorandom test item in association with the expected result corresponding to the logical path.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: March 5, 2019
    Assignee: Red Hat, Inc.
    Inventors: Hao Liu, Min Zhan, Luyao Huang
  • Patent number: 10225750
    Abstract: A module transmits send information to be processed by an information processing apparatus along a transmission path on which the information processing apparatus is present. When the send information is sent in accordance with predetermined sending parameters, if a sending failure in which a sending completion state of the send information cannot be confirmed occurs, a part or all of the sending parameters used for sending of the send information with respect to which the sending failure has occurred are changed, and the send information is resent in accordance with the sending parameters after the changing. Then, the predetermined sending parameter changed between the occurrence of the sending failure and confirmation of the sending completion state of the resent send information, and resend result information related to a send result corresponding to the changed predetermined sending parameter are acquired and sent toward a predetermined processing apparatus.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 5, 2019
    Assignee: OMRON Corporation
    Inventors: Ryota Yamada, Yusuke Yamaji, Yuki Inoue, Hajime Umeki
  • Patent number: 10219311
    Abstract: For monitoring and handling a radio link failure in inactive state, a method detects the radio link failure at a mobile communication device in the inactive state. The method further mitigates the radio link failure.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: February 26, 2019
    Assignee: MOTOROLA MOBILITY LLC
    Inventors: Prateek Basu Mallick, Joachim Loehr, Ravi Kuchibhotla
  • Patent number: 10193746
    Abstract: A first maintenance endpoint (MEP) device may identify that a first interface of the first MEP device is associated with a connectivity failure. The first MEP device may provide, to a second MEP device, a first continuity check message (CCM), that includes a MEP identifier of the first MEP device. The first CCM may cause the second MEP device to designate a second interface of the second MEP device as being offline. The first MEP device may receive, from the second MEP device, a second CCM, that includes the MEP identifier of the first MEP device and information indicating that the second interface of the second MEP device is offline. The first MEP device may execute a rule to avoid a deadlock situation based on the second CCM including the MEP identifier of the first MEP device.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: Vamsi Krishna A, Sudheendra Bellamkonda, Paleti Venkata Ramana, Prabhu Raj V. K., Viswanath K J
  • Patent number: 10164873
    Abstract: Systems and methods utilize an all-or-none switchover to prevent split-brain problems in a Multi-Chassis Link Aggregation Group (MC-LAG) network. A standby node in the MC-LAG network can perform the steps of remaining in a standby state responsive to a loss of adjacency with an active node, wherein, in the standby state, all standby links between the standby node and a common endpoint are non-distributing; monitoring frames transmitted by the common endpoint to the standby node over the standby links; and determining based on the monitoring frames whether all active links between the active node and the common endpoint have failed and entering an active state with all the standby links distributing based thereon.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: December 25, 2018
    Assignee: Ciena Corporation
    Inventors: Ankit Sood, Hossein Baheri, Leela Sankar Gudimetla, Vijay Mohan Chandra Mohan, Wei-Chiuan Chen
  • Patent number: 10142426
    Abstract: A monitoring system monitors traffic flows that are exchanged over a communication network. The system characterizes the flows in terms of their temporal traffic features, and uses this characterization to identify communication devices that participate in the same communication session. By identifying the communication devices that serve as endpoints in the same session, the system establishes correlations between the users of these communication devices. The monitoring system characterizes the flows using traffic features such as flow start time, flow end time, inter-burst time and burst size, and/or statistical properties of such features. The system typically generates compressed-form representations (“signatures”) for the traffic flows based on the temporal traffic features, and finds matching flows by finding similarities between signatures.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: November 27, 2018
    Assignee: VERINT SYSTEMS LTD.
    Inventor: Haim Zlatokrilov
  • Patent number: 10142227
    Abstract: In one embodiment, a method comprises receiving, by a network device in a deterministic data network comprising deterministic segments, a data packet comprising a packet header having a bit index, each bit in the bit index associated with a corresponding one of the deterministic segments; the network device identifying, from the bit index, a first bit for a corresponding first deterministic segment and a second bit for a corresponding second deterministic segment, wherein the network device is an endpoint for transmitting deterministic traffic into each of the first and second deterministic segments; the network device selectively executing a replication operation of the data packet for transmission of a replicated data packet into each of the first and second deterministic segments, based on the network device detecting the corresponding first and second bits set for replication.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: November 27, 2018
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Pascal Thubert, Jean-Philippe Vasseur, Patrick Wetterwald, Ijsbrand Wijnands
  • Patent number: 10142224
    Abstract: A path computation method and a related device are disclosed. The method includes: a second network device receives path requirement information and a recomputation condition that are sent by a first network device; the second network device first obtains by means of computation a path meeting a requirement according to the path requirement information, and sends description information of the path meeting the requirement to the first network device; then the second network device constantly determines whether the recomputation condition is met; and when the recomputation condition is met, the second network device performs path recomputation, and sends description information of a path obtained by means of recomputation to the first network device. Therefore sensitivity for triggering path recomputation can be improved and a quantity of communication messages between network devices can be reduced.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 27, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Hong Zhou, Qin Wu, Feng Li, Yue Yin
  • Patent number: 10135538
    Abstract: An apparatus and method for signaling and transmitting data through an optical link is described. The apparatus may include a connector including a first plurality of contacts compatible with an enhanced SFP (SFP+) connector. The connector further includes an additional contact formed at a space adjacent to the first plurality of contacts. A tone generator couples to the additional contact to receive a first signal and to generate a first distinct tone indicative of the first signal for transmission via the additional contact. The method may include generating a first distinct tone indicative of a first signal providing control or status of an apparatus and transmitting or receiving a differential data signal over a portion of a first plurality of contacts compatible with an enhanced SFP (SFP+) connector. The first distinct tone is transmitted over the additional contact formed in a space adjacent to the first plurality of contacts.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: November 20, 2018
    Assignee: Finisar Corporation
    Inventors: Giuliano Coli, Stephen Nelson, Henry Meyer Daghighian
  • Patent number: 10136449
    Abstract: The present disclosure is directed to systems, apparatuses, and methods for operating a wireless local area network (WLAN) modem to perform WLAN channel change in a WLAN environment that is inhabited by radar devices, and therefore subject to a Dynamic Frequency Selection (DFS) requirement defined by the appropriate WLAN governing standards. Specifically, the present disclosure is directed to an apparatus and method for reducing or eliminating the amount of time in which a WLAN transceiver cannot transmit/receive data traffic while listening for radar signals on a channel allocated to radar devices for the minimum listening time specified by DFS.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: November 20, 2018
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Yongfang Guo, Ling Su, Rohit V. Gaikwad
  • Patent number: 10123240
    Abstract: An apparatus including at least one processing circuitry, and at least one memory for storing instructions to be executed by the processing circuitry, wherein the at least one memory and the instructions are configured to, with the at least one processing circuitry, cause the apparatus at least: to receive and process a communication connection reestablishment request from a communication element communicating in a multi-connectivity mode, to decide, in case a communication connection with the communication element is established, whether or not the multi-connectivity mode of the communication element is kept, and to cause a transmission of an indication towards a source communication network control element of the communication element, wherein the indication reflects the decision whether or not the multi-connectivity mode of the communication element is kept.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: November 6, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Yan Ji Zhang, Yang Liu, Tsunehiko Chiba
  • Patent number: 10122618
    Abstract: A path switching method and a device, including determining, by a controller, an active path and at least one standby path of a data flow, and delivering a flow table to a standby path switch such that after the data flow is switched from the active path to the standby path, the standby path switch forwards the data flow according to the flow table, and delivering, by the controller, a path group table to each failover switch, where the path group table includes an identifier of the active path and standby port information such that when detecting, according to the identifier of the active path, that the active path encounters a failure, each failover switch performs path switching according to the standby port information.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 6, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Jianyao Liang
  • Patent number: 10110482
    Abstract: A technique for triggering an association between a Media Access Control (MAC) address and a switch port is provided. The association allows forwarding data frames including the MAC address as destination MAC address via the associated switch port. Related methods include receiving a data frame originating from a node. The data frame includes a MAC address of the originating note as source MAC address. The data frame is stored including the MAC address. The data frame is successfully sent towards a first switch port. In response to a failure of a first link towards the first switch port, the stored data frame is resent towards a seconds switch port that is different from the first switch port for triggering the association between the second switch port and the MAC address of the originating node.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: October 23, 2018
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Junhui Liu, Adrian Pan, Joe Sun
  • Patent number: 10110423
    Abstract: A method for managing network connections may include identifying a network failure within a network comprising various network elements. The method may include selecting, in response to identifying the network failure and for the network elements, a subset of nodal maps from various nodal maps. The nodal maps may be stored on the network elements. The subset of nodal maps may describe various cross-connections of the nodal maps within a first end-to-end connection in the network. The method may include transmitting, in response to selecting the subset of nodal maps, various activation requests to trigger the network elements to implement the subset of nodal maps.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: October 23, 2018
    Assignee: Ciena Corporation
    Inventors: Darek Skalecki, Gerard Leo Swinkels
  • Patent number: 10110472
    Abstract: A software defined networking (SDN) controller and methods for protecting against failure of a network element in a forwarding plane are provided. A multi-topology routing based IP fast re-route (MTR-IPFRR) process is configured to: if a new traffic flow is detected in the forwarding plane, determine a primary path for relaying network traffic to a destination node using primary forwarding tables; for each network element along the primary path, determine and associate a virtual topology (VT) which protects the network element from relaying network traffic; determine a protecting path for each protected network element along the primary path using an associated VT; and program each node along the primary path to be switchable to a protecting path associated with an adjacent network element to reroute network traffic from an anticipated failed network element.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: October 23, 2018
    Assignee: OZYEGIN UNIVERSITESI
    Inventor: Selçuk Cevher
  • Patent number: 10084558
    Abstract: A cross-domain clock synchronization method, device and system and a computer storage medium, which are applied to a cross-domain synchronization network.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: September 25, 2018
    Assignee: ZTE Corporation
    Inventors: Kexin Tang, Xihua Fu, Junhui Zhang
  • Patent number: 10075330
    Abstract: A media converter including first and second physical layer devices and a processor. The first physical layer device is configured to store first data indicating a first status including an indication that the first communication link is active or inactive. The second physical layer device is configured to store second data indicating a second status including an indication that the second communication link is active or inactive. The processor is configured to determine whether the first status indicates that the first communication link is active or inactive, in response to a determination that the first status indicates that the first communication link is active, determine whether the second status indicates that the second communication link is active or inactive, and, in response to a determination that the second status indicates that the second communication link is inactive, change the first data to indicate that the first communication link is inactive.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: September 11, 2018
    Assignee: Marvell International Ltd.
    Inventor: Donald Pannell
  • Patent number: 10033539
    Abstract: In one example, a first routing device of an Ethernet virtual private network (EVPN) is multihomed to a customer edge (CE) routing device with a second routing device. The first routing device includes one or more network interfaces configured to send and receive packets. The first routing device also includes one or more processors configured to receive, via the one or more network interfaces, a first packet from the CE routing device including multicast join information, update multicast state information of the first routing device using the multicast join information from the first packet, and send, via the one or more network interfaces, a second packet including data representative of the multicast join information to the second routing device to synchronize multicast state information of the second routing device with the multicast state information of the first routing device.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 24, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Vikram Nagarajan, Sachin S. Natu, Kapil Arora, Sunil Kumar Malali, Goutham Patil R, Raj Chetan Boddireddy
  • Patent number: 10034310
    Abstract: One embodiment of the present disclosure relates to a method for random access in a UE in an out-of-sync status. The method comprises: sending to a base station a first message including a random access preamble according to a TDD configuration in a SIB; receiving from the base station a second message including a random access response using the random access preamble according to the TDD configuration in the SIB. Another embodiment of the present invention also relates to corresponding method for random access in a base station. According to an aspect of the present disclosure, there are provided corresponding devices.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: July 24, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Rui Fan, Erik Eriksson, Xinghua Song
  • Patent number: 10027557
    Abstract: Provided is a method for controlling exchanges of data streams between at least one source connected to a hybrid wide area telecommunication network via a local area access network and at least one recipient connected to the wide area telecommunication network via a remote access network. The method includes the steps of: setting new transfer rules through the analysis of the streams, dynamically creating at least one additional stream exchange path from the new transfer rules and the access rules in force, applying on the additional path burn-in, securization and optimization mechanisms for the stream transfers between the local area access network and the remote access network, and transferring each new stream to the recipient via the additional path according to the new transfer rules.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: July 17, 2018
    Assignee: INFOVISTA SAS
    Inventors: Michel Delattre, François Lecerf
  • Patent number: 10027508
    Abstract: Various systems and methods for fault-tolerant and otherwise optimized communication, in which a system includes communication nodes connected by wireless data links together forming a ring structure, as well as additional wireless data links operative to partition the ring structure into multiple sub-ring structures. The system is operative to select, per each of the sub-ring structures, one of the wireless data links to remain dormant, thereby effectively creating a certain communication tree structure. The system is further operative, upon detecting a communication problem or inefficiency in any or all of the sub-ring structures, to shut-down, per sub-ring structure detected, the problematic or otherwise inefficient wireless data link, and to reactivate instead the dormant wireless data link, thereby effectively switching to a new communication tree structure, and thus resolving the problem or otherwise improving efficiency.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 17, 2018
    Assignee: Siklu Communication Ltd.
    Inventors: Yigal Leiba, Izhak Kirshenbaum, Leonid Shousterman
  • Patent number: 10027572
    Abstract: A station (100, 330) for use in a mesh network comprising at least one first station (100a) and a second station (100b) wherein the station comprises a controller (210) configured to receive a path request for a path from the first station (100a) to the second station (100b); determine a proposed path between the first station (100a) and the second station (100b); and determine a cost for the proposed path, wherein the controller (210) is characterized in that it is configured to retrieve a number of jumps and a bit rate, and to include the number of jumps and a bit rate in the determination of the cost for the proposed path, wherein an increase in number of jumps and/or decrease in bit rate leads to an increase in cost for the proposed path.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: July 17, 2018
    Assignee: TERRANET AB
    Inventors: Henrik Floberg, Conny Do, Dag Mårtensson, Johan Petersen
  • Patent number: 10021021
    Abstract: Systems for routing data over first and second broadband network. A router includes a first network interface that is configured to provide communication via a first broadband channel. There is a second network interface configured to enable communication via second broadband channel. In various embodiments, the first and second broadband channels may be used to provide failover, load balancing, and/or secure transmission of communication data.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 10, 2018
    Assignee: T-Mobile USA, Inc.
    Inventor: Samir Hodroj
  • Patent number: 10003552
    Abstract: One embodiment of the present invention provides a switch which comprises one or more ports adapted to receive packets. The switch is a member of a network of interconnected switches, and also comprises a path monitoring apparatus adapted to: in response to a control packet associated with a session within a predetermined time interval, set a receive indicator for the switch to an active state; and in response to absence of the control packet associated with the session within the predetermined time interval, set the receive indicator for the switch to an inactive state. The path monitoring apparatus is also adapted to set a path state associated with the session based on the receive indicators for the switch and other member switches. The switch also comprises a broadcast apparatus adapted to broadcast at least the receive indicator for the switch to the other member switches.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: June 19, 2018
    Assignee: BROCADE COMMUNICATIONS SYSTEMS, LLC.
    Inventors: Pavan Kumar, Prabu Thayalan, Shivalingayya Chikkamath, Mythilikanth Raman
  • Patent number: 9998361
    Abstract: Techniques are described for enhancements to multicast Label Distribution Protocol (mLDP) to support multicast only fast re-route (MoFRR) over a remote loop free alternate (RLFA) backup path. An egress router is configured to generate a modified mLDP control message to signal the RLFA backup path in which an address of a RLFA node is included in an LSPRoot field and an address of an ingress router is included in an opaque data field. In addition, the RLFA node of the RLFA backup path is configured to recognize that it is identified in the LSPRoot field of the modified mLDP control message, and, in response, look up the ingress router identified in the opaque data field of the modified mLDP control message. The RLFA node is further configured to send an mLDP control message that includes the address of the ingress router in the LSPRoot field towards the ingress router.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 12, 2018
    Assignee: Juniper Networks, Inc.
    Inventors: Robert W. Kebler, Vikram Nagarajan, Bharath RadhaKrishna Bhat, Anish Peter
  • Patent number: 9961606
    Abstract: A method of handling simultaneous communications comprises a first base station configuring a radio resource control (RRC) connection to a communication device; the first base station configuring a second base station as a secondary base station to the communication device; the second base station configuring a signalling radio bearer (SRB) to the communication device via the first base station; the second base station transmitting a second measurement configuration to the communication device; the second base station receiving a second measurement report corresponding to the second measurement configuration via the SRB from the communication device; and the second base station adding a secondary cell (SCell) of the second base station to the communication device, releasing a SCell of the communication device, or changing a primary secondary cell (PSCell) of the communication device via the first base station or via the SRB.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: May 1, 2018
    Assignee: HTC Corporation
    Inventor: Chih-Hsiang Wu
  • Patent number: 9960993
    Abstract: A packet network linear protection method, a network, and a node in a dual or multi-home configuration include designating each of a plurality of home nodes in the dual or multi-home configuration as a working home or a protect home; designating each link between each of the plurality of home nodes and an end node in the dual or multi-home configuration as active or standby; operating a protection switch state machine based on an associated linear protection protocol at each of the plurality of home nodes and the end node; communicating protection messages to each of the plurality of home nodes from the end node; and communicating protection states in an associated protection switch state machine by each of the plurality of home nodes to other home nodes and to the end node.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: May 1, 2018
    Assignee: Ciena Corporation
    Inventors: Jie Hu, Marc Holness, Asheesh Jadav, Somen Bhattacharya
  • Patent number: 9954751
    Abstract: Functionality is described herein for measuring the performance of a network. The functionality operates by generating a probe packet and injecting the probe packet into the network. The probe packet is configured, using one or more layers of encapsulation, to target a particular network component of interest in the network, or to target a particular collection of network components in the network. A switch to which the probe packet is addressed operates by: (a) generating mirrored information that is associated with the probe packet; (b) decapsulating the probe packet (with respect to its outermost encapsulation) to produce a new probe packet; and (c) passing the new probe packet to a downstream network component, in accordance with a destination address associated with the new probe packet. The functionality uses the mirrored information that has been collected in the above manner to detect various anomalies in the network.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 24, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Ming Zhang, Guohan Lu, Lihua Yuan, Yibo Zhu
  • Patent number: 9942631
    Abstract: Devices and techniques for out-of-band platform tuning and configuration are described herein. A device can include a telemetry interface to a telemetry collection system and a network interface to network adapter hardware. The device can receive platform telemetry metrics from the telemetry collection system, and network adapter silicon hardware statistics over the network interface, to gather collected statistics. The device can apply a heuristic algorithm using the collected statistics to determine processing core workloads generated by operation of a plurality of software systems communicatively coupled to the device. The device can provide a reconfiguration message to instruct at least one software system to switch operations to a different processing core, responsive to detecting an overload state on at least one processing core, based on the processing core workloads. Other embodiments are also described.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 10, 2018
    Assignee: Intel Corporation
    Inventors: Andrew J Herdrich, Patrick L. Connor, Dinesh Kumar, Alexander W Min, Daniel J. Dahle, Kapil Sood, Jeffrey B Shaw, Edwin Verplanke, Scott P. Dubal, James Robert Hearn
  • Patent number: 9906294
    Abstract: Systems and methods for improving optical restoration time in a network include maintaining a status of wavelength load for a plurality of optical links in the network; utilizing the wavelength load to estimate a restoration time for one or more wavelengths being added to each of the plurality of optical links; and determining one or more restoration paths for the one or more wavelengths in the network and considering a total service restoration time in selecting a path for each of the one or more wavelengths, wherein each of the one or more restoration paths comprises one or more of the plurality of optical links.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: February 27, 2018
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, Gerard Leo Swinkels
  • Patent number: 9900180
    Abstract: An information processing method and a switch are described, in which the method includes the steps of acquiring a first information transmitted by the server through the first connection; deciding whether a first parameter in the first information matches a first predetermined parameter, the first parameter including at least Virtual Local Area Network (VLAN) identification information and Internet Protocol (IP) address information corresponding to a network port into which the first connection line is plugged on the server; determining the first connection line connected at the switch is in a wrong connection when it is decided that the first parameter does not match the first predetermined parameter. The recognition whether a connection of a network cable plugged in a network port of the server and the port of the switch are correct may be realized automatically.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: February 20, 2018
    Assignee: LENOVO (BEIJING) CO., LTD.
    Inventors: Xiaolei Han, Jie Yang, Liangliang Ma, Jun Liu
  • Patent number: 9894584
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Embodiments of the present disclosure provide a method and an apparatus for efficiently controlling a handover process and a Radio Link Failure (RLF) process. According to embodiments of the present disclosure, an operating method of a User Equipment (UE) includes starting a first timer while a second timer regarding a radio link failure (RLF) is running, and if one of the first timer and the second timer expires, performing a radio resource control (RRC) connection re-establishment. When the handover and the RLF concurrently occur in the mobile communication system, the embodiments of the present disclosure can minimize the service interruption time by conducting the handover instead of the Radio Resource Control (RRC) connection re-establishment due to the RLF.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: February 13, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Min Moon, Nigam Anshuman, Jung-Soo Jung, Sun-Heui Ryoo, Sung-Jin Lee
  • Patent number: 9867226
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for wireless communication, and more particularly, to methods and apparatus for radio link failure (RLF) failover in a multi-connectivity environment. For example, in certain aspects, a mobile device for establishing one or more first data flows with a first network entity, determining a link recovery configuration, the link recovery configuration having information related to establishing a second data flow in the event of a link failure at the first network entity, wherein the link recovery configuration comprises a list of network entities, detecting a link failure at the first network entity affecting a service associated with the first data flows, and recovering the service associated with the first data flows from the link failure by selecting a second network entity from the list of network entities and establishing the second data flow associated with the service based on the link recovery configuration.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: January 9, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Keiichi Kubota, Gavin Bernard Horn, Luis F. B. Lopes