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公开(公告)号：US20230067946A1
公开(公告)日：2023-03-02
申请号：US17462544
申请日：2021-08-31
申请人： Ciena Corporation
IPC分类号： H04L12/703 , H04L12/707
摘要： A method implemented in a network element includes, for a service, receiving a Segment Identifier (SID) list and an explicit list for an intended path in a Segment Routing network; expanding the SID list and comparing the expanded SID list to the explicit list; and setting the intended path as either valid or invalid based on the comparing. The intended path can be a primary path, and the steps can further include receiving a SID list and an explicit list for a backup path in the Segment Routing network. The steps can further include switching to the backup path responsive to a failure on the primary path, and switching back to the primary path responsive to it being valid.
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公开(公告)号：US11558285B2
公开(公告)日：2023-01-17
申请号：US16709231
申请日：2019-12-10
申请人： Aviat Networks, Inc.
发明人： Sergio Licardie , Chaoming Zeng
IPC分类号： H04L12/703 , H04L45/28 , H04L12/40 , H04L45/24 , H04L47/41 , H04L41/0668 , H04W24/04 , H04W28/02 , H04L69/323 , H04L1/00 , H04L43/0811 , H04L43/0823 , H04L45/00 , H04L47/125 , H04L49/351
摘要： Rapid channel failure detection and recovery in wireless communication networks is needed in order to meet, among other things, carrier class Ethernet channel standards. Thus, resilient wireless packet communications is provided using a physical layer link aggregation protocol with a hardware-assisted rapid channel failure detection algorithm and load balancing, preferably in combination. This functionality may be implemented in a Gigabit Ethernet data access card with an engine configured accordingly. In networks with various topologies, these features may be provided in combination with their existing protocols.
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公开(公告)号：US11552882B2
公开(公告)日：2023-01-10
申请号：US17211904
申请日：2021-03-25
发明人： Jose Yallouz , Lion Levi , Gil Mey-Tal , Daniel Klein
IPC分类号： H04L12/703 , H04L12/721 , H04L12/707 , H04L12/717 , H04L45/28 , H04L45/42 , H04L45/00 , H04L45/12
摘要： A network element includes processing circuitry and multiple ports. The ports connect using links to a communication network. The processing circuitry is configured to receive packets via the ports and forward the received packets to respective destination addresses via the ports. The destination addresses are organized in address groups, each address group including multiple destination addresses of nodes connected to a common network element in the communication network. The processing circuitry is further configured to, in response to identifying that a given port connects to a faulty link, determine one or more address groups that became unreachable via the given port due to the faulty link, generate a notification reporting one or more of the determined address groups that are unreachable via any port other than the given port, and transmit the notification to one or more other network elements, via one or more ports other than the given port.
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公开(公告)号：US20220400075A1
公开(公告)日：2022-12-15
申请号：US17391836
申请日：2021-08-02
IPC分类号： H04L12/703 , H04L12/709 , H04L12/741 , H04L12/24 , H04L29/12 , H04L12/46
摘要： In an example, a failure event is detected in a network, where the failure event is indicative of a network outage in a network device or a peer network device of an MC-LAG. The network device and the peer network device may be configured as a first VTEP in an overlay network. It may be determined that reprovisioning of virtual tunnels in the network device is incomplete. State parameters between the network device and the peer network device is synchronized. The set of virtual tunnels in the network device is provisioned based on the state parameters. After completion of provisioning of the virtual tunnels, an IP address of the first VTEP is published to underlay network devices connecting the first VTEP to a second VTEP over an underlay network. Subsequently, communication links between the MC-LAG and a host device is enabled.
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公开(公告)号：US20220337516A1
公开(公告)日：2022-10-20
申请号：US17235093
申请日：2021-04-20
申请人： Ciena Corporation
发明人： Khandaker Rafiul Hasan , Xiang Ji
IPC分类号： H04L12/723 , H04L12/703
摘要： Systems and methods for detecting, testing, and validating inactive paths or backup/protection paths of Label Switched Paths (LSPs) in a Multiprotocol Label Switching (MPLS) network are provided. A method, according to one implementation, includes the step of identifying an active path defining a traffic route along which data packets are transmitted from an ingress node to an egress node via one or more intermediate nodes. The method also includes sending an echo request from the ingress node to the one or more intermediate nodes, wherein the echo request allows the one or more intermediate nodes to detect and validate one or more inactive paths. The one or more inactive paths are configured as one or more protection paths when an event is detected that impedes the transmission of the data packets along the active path.
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公开(公告)号：US20220311702A1
公开(公告)日：2022-09-29
申请号：US17211904
申请日：2021-03-25
发明人： Jose Yallouz , Lion Levi , Gil Mey-Tal , Daniel Klein
IPC分类号： H04L12/703 , H04L12/721 , H04L12/707 , H04L12/717
摘要： A network element includes processing circuitry and multiple ports. The ports connect using links to a communication network. The processing circuitry is configured to receive packets via the ports and forward the received packets to respective destination addresses via the ports. The destination addresses are organized in address groups, each address group including multiple destination addresses of nodes connected to a common network element in the communication network. The processing circuitry is further configured to, in response to identifying that a given port connects to a faulty link, determine one or more address groups that became unreachable via the given port due to the faulty link, generate a notification reporting one or more of the determined address groups that are unreachable via any port other than the given port, and transmit the notification to one or more other network elements, via one or more ports other than the given port.
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公开(公告)号：US20220272147A1
公开(公告)日：2022-08-25
申请号：US17183953
申请日：2021-02-24
发明人： Gary Mitchell , Scott Whittle , Kurt Quasebarth
IPC分类号： H04L29/08 , H04L12/803 , H04L12/703
摘要： The invention is that of systems and methods for controllerless and distributed network connections to servers on a network by remote clients seeking their services. The invention comprises a server database where servers within a server group identified by a groupname may post unique identifiers (UIDs) for retrieval by group clients configured with the groupname, which may query the server database for server connection information such as uptime, downtime, and congestion in order to select a server for a preferential connection based on an overall availability profile as determined by the group client. The methods described herein eliminate a separate controller and thereby eliminate the single point of failure (SPOF) represented by connection controllers and load balancers in a network as are common in the current state of the art. Servers in the server group may periodically refresh their connection details to enable group client to server connections based on dynamic real-time updates, establishing a high-availability server group for the provision of services.
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公开(公告)号：US20220210053A1
公开(公告)日：2022-06-30
申请号：US17247901
申请日：2020-12-29
申请人： ATLASSIAN PTY LTD , ATLASSIAN INC
发明人： Haishan DU
IPC分类号： H04L12/707 , H04L12/717 , H04L12/721 , H04L12/703 , H04L12/751
摘要： Various examples herein described are directed to methods, apparatuses and computer program products configured for tracking, tracing, and/or diagnosing data object transmissions in a network service cloud. In some embodiments, a path finder server entity may transmit one or more Application Programming Interface (API) calls to one or more APIs associated with the network service cloud to obtain one or more data routing table objects, and may determine transmission paths of data objects based at least in part on the data routing table objects.
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公开(公告)号：US11349749B2
公开(公告)日：2022-05-31
申请号：US16357136
申请日：2019-03-18
发明人： Vikram Nagarajan , Kapil Arora , Robert W. Kebler , Princy T. Elizabeth , Ramesh Kandula , Soumyodeep Joarder
IPC分类号： H04L12/703 , H04L12/707 , H04L45/28 , H04L12/46 , H04L45/00 , H04L45/64
摘要： Techniques are described for facilitating node protection for Broadcast, unknown Unicast, and Multicast (BUM) traffic for a multi-homed node failure. For example, each VTEP (e.g., PE device) may advertise a protected VTEP address that indicates an IP address of a remote PE device that is to be protected in the event of a node failure. In the event a multi-homed PE device fails, the ingress PE device sends a BUM packet including the protected VTEP address for the failed node. When an egress PE device receives the BUM packet, the egress PE device determines whether the BUM packet includes the protected VTEP address and whether the egress PE device is operating as a backup designated forwarder (DF). If the BUM packet includes the protected VTEP address and the egress PE device is a backup DF, the egress PE device forwards the BUM traffic to the ESI.
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公开(公告)号：US20220141127A1
公开(公告)日：2022-05-05
申请号：US17514885
申请日：2021-10-29
发明人： Lingshuai LI , Jingrong XIE
IPC分类号： H04L12/703 , H04L12/733 , H04L12/741
摘要： This application provides a method for sending a BIERv6 packet and a first network device. The method includes: determining, by a first network device, that an active next-hop device for reaching a second network device is faulty, where the first network device belongs to a first area in a BIER domain, the second network device and the active next-hop device belong to a second area in the BIER domain, the active next-hop device is a border device in the second area and is configured to connect to the first area, and the first area and the second area have different protocols; and sending, by the first network device, a BIERv6 packet to a backup next-hop device for reaching the second network device, where the backup next-hop device is a border device in the second area and is configured to connect to the first area.
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