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| Number | Title | Issue Date |
| 8446817 | Distributed virtual fibre channel over Ethernet forwarder A virtual Fibre Channel over Ethernet (FCoE) forwarder (vFCF) distributed in the core layer of an FCoE environment between two or more FCoE-enabled core switches by using a single virtual domain ID for the FCoE forwarders (FCFs) in a fabric is provided. In this mann... | 05/21/2013 |
| 8441921 | System and method for ethernet protection switching in a provider backbone bridging traffic engineering domain A method of providing protection switching on a backbone network includes configuring a service instance table for a first port of a first bridge. The service instance table includes a Virtual Local Access Network (VLAN) identifier entry for one or more service inst... | 05/14/2013 |
| 8437248 | Method, system, and apparatus for network device to access packet switched network A method for a network device to access a packet switched network is applied to a system in which the network device accesses the packet switched network by connecting to PEs in an active-standby mode. The method includes: an active PE and a standby PE each sends a ... | 05/07/2013 |
| 8432788 | Intelligent failback in a load-balanced networking environment One embodiment of the present invention sets forth a method for failing back network connections to a network interface card (NIC) within a computing device. The method includes the steps of monitoring a failed or unreliable NIC within the computing device, determin... | 04/30/2013 |
| 8427938 | Virtual local area network server redundancy and failover to enable seamless mobility in the mobility domain A method, apparatus and computer program product for providing Virtual Local Area Network (VLAN) server redundancy is presented. A mobility switch (MS) advertises to at least one peer mobility switch, VLANs configured as server capable, the advertising including pro... | 04/23/2013 |
| 8427937 | Bridging for SONET/SDH automatic protection switching Bridging for Synchronous Optical NETwork (SONET)/Synchronous Digital Hierarchy (SDH) Automatic Protection Switching is disclosed. First and second apparatus in a redundant pair handle communication traffic that includes content for transmission on respective first a... | 04/23/2013 |
| 8422359 | Communication network control system and control method In a case where a failure has occurred in one of fabric management mechanisms, nodes resume data I/O communications without degrading performance and without changing the data I/O communication path between the nodes by switching control to the other one of the fabr... | 04/16/2013 |
| 8411559 | Double ring network system and communication control method thereof, and transmission station, and program for transmission stations A double ring network system configured with two or more transmission stations each including a pair of bi-directionally communicative communication ports, including any adjacent two transmission stations as terminal stations, and any transmission station as a base,... | 04/02/2013 |
| 8406122 | Fault reporting tag for mesh access points Mesh access point fault reporting. In particular implementations, a method includes receiving a fault indication indicating one or more failures; collecting fault data related to the one or more failures or a state of the mesh access point; and passing the fault dat... | 03/26/2013 |
| 8406121 | Method for error detection in a packet-based message distribution system In one aspect, a method for error detection in a packet-based message distribution system, according to which messages are distributed via a plurality of nodes and other system components, and each node comprises at least two addressable interfaces is provided. For ... | 03/26/2013 |
| 8400910 | Associated tunnels terminating on different packet switches and relaying packets via different tunnel combinations Packet switch operating methods and packet switches forward a first packet to a first packet switch via an active primary tunnel terminating on the first packet switch. The primary tunnel is associated with an inactive backup tunnel terminating on a different second... | 03/19/2013 |
| 8395988 | Method and system for providing voice survivability A system for controlling telecommunication equipment configured to provide voice survivability within a telecommunication network comprises a call server monitoring apparatus, a penalty management apparatus, and a call server management apparatus. The call server mo... | 03/12/2013 |
| 8391133 | System and method for automatic reset of pre-programmed circuits in case of failures in transport networks A network system comprises at least one input TNE (10) and one output TNE (11) interconnected by circuits in the network (20). Each TNE in the protection step comprises a traffic selector (22, 23) switchable between listening to the traff... | 03/05/2013 |
| 8374077 | Bandwidth management for MPLS fast rerouting Certain exemplary embodiments provide a method comprising: in a network at a node located on a label switched path: selecting a backup path to respond to a failure; and for each link along the backup path, reserving a backup bandwidth, wherein the backup bandwidth i... | 02/12/2013 |
| 8355316 | End-to-end network monitoring A system, comprising a computer having a processor and a memory and an application stored in the memory that, when executed by the processor, identifies a plurality of routers traversed by data packets sent from a source customer edge router to a destination custome... | 01/15/2013 |
| 8355314 | Method and apparatus for re-routing calls in a packet network during failures Method and apparatus for re-routing a call in a packet network during failures is described. In one example, a failure condition is detected for a destination endpoint for the call. At least one alternative endpoint address is identified from an alternative routing ... | 01/15/2013 |
| 8355315 | Failure protection for P2MP tunnel tail-end node In one embodiment, a primary tail-end node (PTE) of a point-to-multipoint (P2MP) tunnel selects a backup tail-end node (BTE) from one or more BTEs that are configured to forward traffic to a same multicast network as the PTE. The PTE then determines a branching node... | 01/15/2013 |
| 8351324 | Analyzing service impacts on virtual private networks Methods, computer-readable media and computing systems are provided for analyzing service impacts on one or more VPNs on a computer network. A topology of each VPN may be identified. A protocol failure may be detected between routers of the computer network. It may ... | 01/08/2013 |
| 8345538 | Apparatus and method for finding a pair of disjoint paths in a communication network There is provided topology information including connection states among nodes in a network, and port information including restriction conditions on connectivity among ports within a restricted node. A path search apparatus finds a first path having the minimum tot... | 01/01/2013 |
| 8345537 | Methods and systems for automatically rerouting logical circuit data from a logical circuit failure to a dedicated backup circuit in a data network A method and system are provided for automatically rerouting logical circuit data from a physical circuit failure in a data network. When a failure in a logical circuit is detected, a label or services name associated with the logical circuit is automatically associ... | 01/01/2013 |
| 8339938 | Method and system for automatically tracking the rerouting of logical circuit data in a data network A method and system are provided for tracking the rerouting of logical circuit data in a data network. A disclosed example method involves updating reroute information in response to a dropped packet associated with a quality of service parameter having been exceede... | 12/25/2012 |
| 8339940 | Multi-active detection method and stack member device The present invention discloses a method of multi-active detection and a stack member device. Each member device in a stack is configured with a detection interface that is assigned an IP address, wherein the IP address of the detection interface on the designated a... | 12/25/2012 |
| 8339939 | Re-routing traffic flow in a packet switched communications transport network In a packet switched communications transport network a method for re-routing traffic flow is provided. The invention based on the recognition of actual utilization of transport resources. In accordance with the implementation, Fast Re-Route detour paths are recalcu... | 12/25/2012 |
| 8331220 | Edge node redundant system A client terminal at one location a is accommodated in an edge node (gateway) having a redundant configuration composed of a primary node and a secondary node. Normally a primary edge node PE A is used to enable communications with partner client terminals at locati... | 12/11/2012 |
| 8331219 | Transfer of user dial plan to an access gateway A system, method, and Soft Switch for maintaining a current user dial plan in an Access Gateway. When an H.248 control link is established between the Access Gateway and the Soft Switch, the Soft Switch downloads the current dial plan to the Access Gateway. The down... | 12/11/2012 |
| 8320236 | Method for processing ethernet ring message and an ethernet ring protection system using the method A method for processing Ethernet ring messages and a corresponding Ethernet ring protection system are provided. The method comprises distinguishing a message to be processed by processors of transit nodes from that not to be processed by the processors of the trans... | 11/27/2012 |
| 8305879 | Peripheral component switch having automatic link failover Disclosed are a PCI switch assembly, having automatic link failover, and a computer system including that switch assembly. The switch assembly comprises first and second interconnected, peripheral component switches. Each of the these switches has first and second p... | 11/06/2012 |
| 8295160 | Data communication system, device and method of detecting a failure on an access line in a network When the provider edge PE1 detects the occurrence of a failure at the access line AL1, it sends the label withdraw message to the virtual circuit VC1, and when the provider edge PE2 receives the label withdraw message sent via the virtual... | 10/23/2012 |
| 8289839 | Scaling BFD sessions for neighbors using physical / sub-interface relationships In one embodiment, an apparatus includes a physical port and a plurality of logical sub-interfaces under the physical port. The physical port and the logical sub-interfaces are configured as a Bidirectional Forwarding Detection (BFD) neighbor group. The physical por... | 10/16/2012 |
| 8279749 | Failure protection for P2MP tunnel head-end node In one embodiment, a primary head-end node (PHE) and one or more backup head-end nodes (BHEs) receive traffic from a common multicast network. The PHE establishes a primary point-to-multipoint (P2MP) tunnel and forwards the multicast traffic onto the primary P2MP tu... | 10/02/2012 |
| 8270289 | Methods and apparatus for system framing synchronization control for a framer/mapper/multiplexor device with 1+1 and equipment protection Methods and apparatus are provided for framing synchronization control for a framer/mapper/multiplexor (FMM) device with 1+1 and equipment protection. FMM device are disclosed that synchronize one or more internal signals by changing a phase of the one or more inter... | 09/18/2012 |
| 8264949 | Method and apparatus for selecting between available neighbors in a rapid alternate path calculation A weighting process may be used to select between alternate neighbors in a RAPID calculation to enable policy and/or traffic engineering considerations to affect the selection of an alternate path through the network. The information used to weight the neighbors may... | 09/11/2012 |
| 8248915 | Redundant session information for a distributed network A mobile communication network includes a plurality of access nodes that can serve different roles in support of a communication session with a mobile station. An access node can serve as a connecting node that receives access requests the mobile station, as an anch... | 08/21/2012 |
| 8248916 | Recovery methods for restoring service in a distributed radio access network A mobile communication network includes a plurality of access nodes that can serve different roles in support of a communication session with a mobile station. An access node can serve as a connecting node that receives access requests the mobile station, as an anch... | 08/21/2012 |
| 8248917 | Method and system for implementing protection switching in multi-protocol label switching network The embodiments of the present invention provide a method and a system for implementing protection switching in Multi-protocol Label Switching (MPLS) network, the method includes: transmitting by a first Egress Label Switched Router (LSR) first probe packets to an I... | 08/21/2012 |
| 8243585 | Method and apparatus for fault-resilient multicast using multiple sources A capability is provided for supporting fault-resilient multicast using multiple sources. A method for supporting fault-resilient propagation of multicast traffic using Redundant Multicast Trees (RMTs) includes identifying each potential Shared Risk Link Group (SRLG... | 08/14/2012 |
| 8243586 | Cross-layer reconfiguration method for surviving multiple-link network failures A second link in a network is reconfigured after failure of a first link, so that multiple-link failures may be survived. After receipt of an OSPF link state advertisement (LSA) indicating use of a backup path bl after the failure of link l, new backup pa... | 08/14/2012 |
| 8243587 | Label distribution protocol synchronization in multi-protocol label switching environments A method may include determining that a label distribution protocol (LDP) session is not associated with an interface of a network device, wherein the interface of the network device is included in a targeted LDP session. Interior gateway protocol (IGP) metric infor... | 08/14/2012 |
| 8243584 | Method and system for rehoming a digital subscriber line access multiplexer A method and system are provided for rehoming a digital subscriber line access multiplexer between a first data port and a second data port on a data switch. The method includes establishing a physical loop-back circuit between the second data port and a temporary i... | 08/14/2012 |
| 8238230 | Detection of active nodes, safe node removal conditions, and cross-cabling conditions for maintenance operations within a multi-chassis routing matrix A system includes a first device connected to a second device The first device includes a second node connected to a first node and the second device via a link, and includes a backup second node connected to the first node and the second device via another link. Th... | 08/07/2012 |
