Patents Assigned to Juniper Networks, Inc.
  • SEQUENCING PACKETS FROM MULTIPLE THREADS
    Publication number: 20130136134
    Abstract: A device may reserve a slot for a received packet in a packet ordering queue (POQ), convey the packet to one of a plurality of threads for processing, obtain the packet from the one of the plurality of threads after the packet has been processed, organize the packet in the POQ in accordance with a position of the reserved slot, and release the packet from the POQ if the reserved slot is a head of the POQ.
    Type: Application
    Filed: January 25, 2013
    Publication date: May 30, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: Juniper Networks, Inc.
  • APPARATUS AND METHOD FOR DATA TRANSMISSION
    Publication number: 20130136137
    Abstract: Local concentration of accessing loads on a data buffer during data cell reading is reduced. Also, by providing sufficient time for a data cell reading operation with respect to data cell transmission timing, transmission rate fluctuation of CBR data cells in a transmitting side is reduced. When transmission of a new data stream is added, controller in a cell control unit refers to a transmitted data cell count of VC information processed through a slot immediately before. The controller determines whether a data cell transmitted through the slot immediately before is a head portion of a packet or not. If the data cell transmitted through the slot immediately before is the head portion of the packet, the controller only adds the VC information of the data stream to a shaper link list, and withholds transmission of the data cell.
    Type: Application
    Filed: December 27, 2012
    Publication date: May 30, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWORKS, INC.
  • WRR SCHEDULER CONFIGURATION FOR OPTIMIZED LATENCY, BUFFER UTILIZATION
    Publication number: 20130136141
    Abstract: A method includes receiving network information for calculating weighted round-robin (WRR) weights, calculating WRR weights associated with queues based on the network information, and determining whether a highest common factor (HCF) exists in relation to the calculated WRR weights. The method further includes reducing the calculated WRR weights in accordance with the HCF, when it is determined that the HCF exists, and performing a WRR scheduling of packets, stored in the queues, based on the reduced WRR weights.
    Type: Application
    Filed: December 31, 2012
    Publication date: May 30, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWORKS, INC.
  • LSP hierarchy for MPLS networks
    Patent number: 8451846
    Abstract: A system may define a first region that includes a first colored link of a multiprotocol label switching (MPLS) network, and may define a second region that includes a second colored link of the MPLS network. The system may define a boundary between the first and second regions based on the first colored link and the second colored link.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventor: Arthi Ayyangar
  • Avoiding data loss in a multi-homed layer two bridging network
    Patent number: 8451715
    Abstract: A network system includes a provider backbone bridged network (PBBN) and a multi-homed provider bridge network (PBN) having a plurality of L2 switches that operate as backboned edge bridges (BEBs) to bridges L2 packets between the PBN and the PBBN. A first one of the L2 switches is configured to bridge L2 packets from a first backbone VLAN (B-VLAN) to the PBN when a physical link of the multi-homed PBN is operational. The L2 switch is further configured to shunt the L2 packets from the first backbone VLAN to a second one of the L2 switches operating as a secondary BEB of the multi-homed PBN via a second B-VLAN when the physical link is non-operational.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Sanjiv Doshi, Apurva Mehta, Jagadish Grandhi, Bin Hong
  • Systems and methods for selectively performing explicit congestion notification
    Patent number: 8451852
    Abstract: A system provides congestion control and includes multiple queues that temporarily store data and a drop engine. The system associates a value with each of the queues, where each of the values relates to an amount of memory associated with the queue. The drop engine compares the value associated with a particular one of the queues to one or more programmable thresholds and selectively performs explicit congestion notification or packet dropping on data in the particular queue based on a result of the comparison.
    Type: Grant
    Filed: September 1, 2010
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Pradeep Sindhu, Debashis Basu, Jayabharat Boddu, Avanindra Godbole
  • Secure network services via daemons
    Patent number: 8453205
    Abstract: A system receives a request from a requestor for a service performed by a network device, establishes an encrypted session with the requestor, and utilizes a temporary process to determine whether the requestor is authorized for the service. If the requestor is authorized, the system redirects the service request to the service, and provides the service to the requestor.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventor: Prakash G. Patil
  • Fixed attenuation air gap interface for a multimode optical fiber interconnection
    Patent number: 8452152
    Abstract: A fiber-to-fiber connector system that includes a first connector for housing a portion of a first fiber, where the first fiber is terminated by a first end-face. The fiber-to-fiber connection system also includes a second connector for housing a portion of a second fiber, where the second fiber is terminated by a second end-face, where the first connector and the second connector permit the first fiber and the second fiber to be interconnected to form an air gap interface between the first end-face and the second end-face; the air gap interface defines a spacing between the first end-face and the second end-face; and the air gap interface enables, based on the defined spacing, an optical signal to be transmitted between the first fiber and the second fiber with a fixed quantity of attenuation.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventor: Mark Marino
  • Coarse time synchronization
    Patent number: 8451958
    Abstract: A system for determining the burst start timing of a signal includes logic configured to receive the signal, generate correlation moduli and generate a first timing output based on the correlation moduli. The logic may also be configured to receive operating mode information and timing information and generate search controls. The logic may further be configured to identify a maximum of the correlation moduli using the search controls and determine a second timing output associated with the maximum correlation modulus. The second timing output represents a more accurate approximation of a burst start time than the first timing output.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Joseph Boutros, Emmanuel Lemois
  • Low latency serial memory interface
    Patent number: 8452908
    Abstract: A device applies synchronous clocking across a first component and a second component of the device, and designates a particular serial link, from a group of serial links, as a master serial link. The device also designates the remaining serial links as slave serial links, provides, via the master serial link, an encoded data stream, and provides, via the slave serial links, un-encoded and scrambled data streams.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: May 28, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: David P. Chengson, Chang-Hong Wu
  • SYSTEMS AND METHODS FOR DROPPING DATA USING A DROP PROFILE
    Publication number: 20130128734
    Abstract: A system selectively drops data from queues. The system includes a drop table that stores drop probabilities. The system selects one of the queues to examine and generates an index into the drop table to identify one of the drop probabilities for the examined queue. The system then determines whether to drop data from the examined queue based on the identified drop probability.
    Type: Application
    Filed: December 17, 2012
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWORKS, INC.
  • FAST RESOURCE RECOVERY AFTER THREAD CRASH
    Publication number: 20130132773
    Abstract: A resource recovery system may maintain a counter in memory that indicates a number of times one or more threads of execution, which use shared resources, have crashed. The system may associate a first value of the counter with a resource allocated to a thread of the one or more threads, and may set an indicator associated with the thread to indicate whether the thread has crashed. The system may determine whether to re-allocate the resource to the thread based on the first value of the counter associated with the resource and based on the indicator associated with the thread.
    Type: Application
    Filed: January 11, 2013
    Publication date: May 23, 2013
    Applicant: Juniper Networks, Inc.
    Inventor: Juniper Networks, Inc.
  • COMBINING NETWORK ENDPOINT POLICY RESULTS
    Publication number: 20130133027
    Abstract: An endpoint integrity system controls access to resources of a protected network for endpoint devices attempting to access the protected network. The system may include a number of evaluation modules that communicate with an endpoint device. The evaluation modules generate policy results for the endpoint device, in which each of the policy results assume one of three or more states, called a multi-state policy result. The multi-state policy results are combined to produce a combined Boolean policy result.
    Type: Application
    Filed: January 14, 2013
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWORKS, INC.
  • USING ENDPOINT HOST CHECKING TO CLASSIFY UNMANAGED DEVICES IN A NETWORK AND TO IMPROVE NETWORK LOCATION AWARENESS
    Publication number: 20130132569
    Abstract: A device receives, from a managed device, endpoint information associated with an unmanaged device connected to the managed device in a network. The device also receives unmanaged device information that partially identifies the unmanaged device, and completely identifies the unmanaged device based on the endpoint information and the unmanaged device information.
    Type: Application
    Filed: January 22, 2013
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: Jeffrey C. VENABLE, Sr.
  • NETWORK DISRUPTION PREVENTION WHEN VIRTUAL CHASSIS SYSTEM UNDERGOES SPLITS AND MERGES
    Publication number: 20130132763
    Abstract: A method performed by network devices that includes operating in a normal mode, where the network devices form a virtual chassis that corresponds to a single logical network device; detecting when a failure within the virtual chassis occurs; executing a splitting process to form one or more new virtual chassis in correspondence to the failure; determining whether one of the one or more new virtual chassis operates as a functioning virtual chassis based on whether at least one of a set of criteria is satisfied, where the functioning virtual chassis operates according to resources configured for the virtual chassis; and operating as a nonfunctioning virtual chassis when it is determined that the one of the one or more virtual chassis does not satisfy the at least one of the set of criteria, where the nonfunctioning virtual chassis operates in a pass-through mode.
    Type: Application
    Filed: January 18, 2013
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWOKES, INC.
  • LAYER 1 FRAME CONSTRUCTION
    Publication number: 20130128901
    Abstract: A method includes appending, by a network device, a first layer 1 frame header to a first payload to form a first layer 1 frame and a second layer 1 frame header to a second payload to form a second layer 1 frame and outputting the first layer 1 frame and the second layer 1 frame in a same format to a network. The first payload may include first layer 2 data. The first layer 1 frame header may include a first protocol identifier that indicates that the first layer 2 data is associated with a first protocol. The second payload may include second layer 2 data. The second layer 1 frame header may include a second protocol identifier that indicates that the second layer 2 data is associated with a second, different protocol.
    Type: Application
    Filed: January 18, 2013
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWORKS, INC.
  • ADAPTIVE NETWORK CONTENT DELIVERY SYSTEM
    Publication number: 20130132504
    Abstract: A method and apparatus stores media content in a variety of storage devices, with at least a portion of the storage devices having different performance characteristics. The system can deliver media to a large number of clients while maintaining a high level of viewing experience for each client by automatically adapting the bit rate of a media being delivered to a client using the client's last mile bit rate variation. The system provides clients with smooth viewing of video without buffering stops. The client does not need a custom video content player to communicate with the system.
    Type: Application
    Filed: January 14, 2013
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: Juniper Networks, Inc.
  • CALL ADMISSION CONTROL METHOD AND SYSTEM
    Publication number: 20130128736
    Abstract: A call admission control technique allowing flexible and reliable call admissions at an ATM switch in the case of an ATM network including both QoS-specified and QoS-unspecified virtual connections is disclosed. In the case where a QoS (Quality of Service) specified connection request occurs, an estimated bandwidth is calculated which is to be assigned to an existing QoS-unspecified traffic on the link associated with the QoS-specified connection request. A call control processor of the ATM switch determines whether the QoS-specified connection request is accepted, depending on whether a requested bandwidth is smaller than an available bandwidth that is obtained by subtracting an assigned bandwidth and the estimated bandwidth from a full bandwidth of the link.
    Type: Application
    Filed: January 17, 2013
    Publication date: May 23, 2013
    Applicant: JUNIPER NETWORKS, INC.
    Inventor: JUNIPER NETWORKS, INC.
  • Flow consistent dynamic load balancing
    Patent number: 8446916
    Abstract: A device provides a flow table. The device receives a data unit, determines a data flow associated with the data unit, determines whether the flow table includes an entry corresponding to the data flow, determines a current utilization of a group of output ports of the device, selects an output port, of the group of output ports, for the data flow based on the current utilization of the group of output ports when the flow table does not store an entry corresponding to the data flow, and stores the data unit in a queue associated with the selected output port.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: May 21, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: Gunes Aybay, Arthi Ayyangar
  • Load balancing
    Patent number: 8446890
    Abstract: A technique for associating clients with APs in an advantageous manner may involve local balancing of clients across APs. This may involve providing instructions to APs to disable client association. Alternatively, this technique may involve load balancing across controllers.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: May 21, 2013
    Assignee: Juniper Networks, Inc.
    Inventors: David B. Aragon, Liang-Jong Huang