Determining the path of User Datagram Protocol (UDP) traceroute probes

    公开(公告)号:US20230283537A1

    公开(公告)日:2023-09-07

    申请号:US18317733

    申请日:2023-05-15

    Applicant: Zscaler, Inc.

    CPC classification number: H04L43/10 H04L47/12

    Abstract: Techniques for determining the path of User Datagram Protocol (UDP) traceroute probes using Transmission Control Protocol (TCP) and Internet Control Message Protocol (ICMP). Various embodiments include sending a plurality of probes to one or more legs in a network path; obtaining measurements from each of the plurality of probes for each of the one or more legs in the network path; and performing one or more actions based on the measurements from each of the plurality of probes. The steps further include overlapping the measurements to determine latency to a destination and identifying throttling of UDP traffic based on the overlapping of measurements from the plurality of probes.

    Communication coupling verification method, storage medium, and network verification apparatus

    公开(公告)号:US11750490B2

    公开(公告)日:2023-09-05

    申请号:US17208896

    申请日:2021-03-22

    CPC classification number: H04L43/10 H04L41/145

    Abstract: A communication coupling verification method executed by a computer, the communication coupling verification method includes identifying both setting information before a setting change of each of network devices arranged in a network and forwarding information before the setting change; identifying both setting information after the setting change and the forwarding information after the setting change; generating a first model before the setting change and a second model after the setting change by using the setting information before the setting change, the forwarding information before the setting change, the setting information after the setting change, and the forwarding information after the setting change; and determining influence of the setting change on the network based on a difference between the generated first model and the generated second model.

    Uplink connectivity in ring networks

    公开(公告)号:US11729022B2

    公开(公告)日:2023-08-15

    申请号:US17644940

    申请日:2021-12-17

    CPC classification number: H04L12/437 H04L43/10 H04L45/26

    Abstract: Techniques for uplink connectivity determination are disclosed. In an example, a Frame Link Module (FLM) in a frame, belonging to a group of frames connected in a ring network, may generate an uplink discovery packet. The FLM may determine, based on a Link Layer Discovery Protocol (LLDP) packet received by the standby uplink from a customer network accessing the ring that the standby uplink has a link to the customer network. The FLM may forward the uplink discovery packet to the standby uplink via a Peripheral Component Interconnect (PCI) interface. The FLM may send the uplink discovery packet to the customer network through the standby uplink directed to an owner FLM. The owner FLM may monitor receipt of the uplink discovery packet from the customer network through a current active uplink and on successful receipt may determine that the standby uplink and switches in the customer network are correctly configured.

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