Multicast Communication Method and Related Apparatus

    公开(公告)号:US20230370374A1

    公开(公告)日:2023-11-16

    申请号:US18196866

    申请日:2023-05-12

    CPC classification number: H04L45/741 H04L12/2854 H04L12/4633 H04L45/04

    Abstract: A multicast communication method is applied to a software-defined wide area network SD-WAN. In the multicast communication method, a bit index explicit replication (Bit Index Explicit Replication, BIER) capability is deployed on a site device in the SD-WAN, a site device through which a multicast packet needs to pass is indicated by a bit index explicit replication IPv6 encapsulation (Bit Index Explicit Replication IPv6 encapsulation, BIERv6) header in the multicast packet, and a multicast distribution tree does not need to be constructed. In addition, the multicast packet is forwarded through an SD-WAN tunnel between site devices, and an intermediate node does not need to sense a multicast service. In this way, a network device has a small quantity of multicast entries and the multicast entries are converged quickly, ensuring normal running of the multicast service.

    Packet Forwarding Method, Device, and System

    公开(公告)号:US20230171184A1

    公开(公告)日:2023-06-01

    申请号:US18154399

    申请日:2023-01-13

    CPC classification number: H04L45/34 H04L45/16 H04L45/74

    Abstract: This application provides a packet forwarding method, device, and system. The method includes: A first network device obtains a first packet, where the first packet includes a multicast packet; the first network device determines a next-hop destination address DA of the multicast packet based on a source address SA and a first correspondence relationship, where the SA is used to identify a multicast path corresponding to the multicast packet, and the first correspondence relationship includes the SA and a next-hop DA of the first network device on the multicast path; the first network device obtains a second packet based on the next-hop DA, where the second packet is a unicast packet obtained after IPv6 encapsulation is performed on the multicast packet; and the first network device forwards the second packet along the multicast path based on the next-hop DA.

    BIERv6 packet processing method, device, and system

    公开(公告)号:US12199862B2

    公开(公告)日:2025-01-14

    申请号:US18476354

    申请日:2023-09-28

    Abstract: The present disclosure provides a bit index explicit replication over internet protocol version 6 (BIERv6) packet processing method, and the method is applied to an Ethernet virtual private network (EVPN). The method includes: A first network device receives a BIERv6 packet sent by a second network device. The BIERv6 packet includes an internet protocol version 6 (IPv6) header and a broadcast, unknown unicast, and multicast (BUM) packet, a source address (SA) of the IPv6 header is a IPv6 address, the IPv6 address identifies the second network device, the first network device is an egress device in a BIER domain, and the second network device is an ingress device in the BIER domain. The first network device determines, based on the IPv6 address, a EVPN instance to which the BUM packet belongs. The first network device forwards the BUM packet based on the EVPN instance. The foregoing technical solutions can reduce waste of public network link bandwidth, and improve BUM packet replication efficiency.

    LOAD SHARING METHOD, ROOT NODE DEVICE, LEAF NODE DEVICE, AND SYSTEM

    公开(公告)号:US20230336484A1

    公开(公告)日:2023-10-19

    申请号:US18337940

    申请日:2023-06-20

    CPC classification number: H04L47/125

    Abstract: This application provides a load sharing method, a root node device, a leaf node device, and a system. The method includes: a first root node device receives a message sent by the leaf node device, where the message includes a first identifier and configuration information. The first identifier indicates the leaf node device. The configuration information indicates a configuration mode, requested by the leaf node device, of load sharing from a root node device group to the leaf node device. The root node device group includes the first root node device. The first root node device determines, based on the first identifier and the configuration information, a configuration result of the load sharing from the first root node device to the leaf node device.

    BIER Packet Forwarding Method, Device, and System

    公开(公告)号:US20230318974A1

    公开(公告)日:2023-10-05

    申请号:US18327541

    申请日:2023-06-01

    CPC classification number: H04L45/741 H04L12/4641 H04L45/16

    Abstract: A first network device receives a BIER packet sent by a second network device. The BIER packet includes a data packet and a global VPN identifier, the global VPN identifier is for uniquely identifying, in a BIER domain, a VPN to which a source device of the data packet belongs, the global VPN identifier includes an identifier of the second network device and a first identifier, and the first identifier is for identifying, on the second network device, the VPN to which the source device of the data packet belongs. The first network device determines, based on the global VPN identifier, a first VPN corresponding to the global VPN identifier. The first network device sends the data packet to the destination device of the data packet corresponding to the first VPN.

    IPV6 Packet Sending Method, Device, and System

    公开(公告)号:US20230188458A1

    公开(公告)日:2023-06-15

    申请号:US18164415

    申请日:2023-02-03

    CPC classification number: H04L45/20 H04L45/16 H04L45/70

    Abstract: An IPv6 packet sending method, a device, and a system is provided. The method includes a first network device receives a first IPv6 packet, where the first IPv6 packet includes a packet header and an inner packet, and the packet header includes a hop limit field. The network device further determines whether a value of the hop limit field is less than or equal to a preset threshold, determines whether the inner packet is a multicast packet, and avoids forwarding the first IPv6 packet when the value of the hop limit field is less than or equal to the preset threshold and the inner packet is the multicast packet.

    VXLAN Configuration Method, Device, and System

    公开(公告)号:US20200267022A1

    公开(公告)日:2020-08-20

    申请号:US16861914

    申请日:2020-04-29

    Abstract: In a VXLAN configuration method, a first network device obtains configuration information, generates first GRASP information based on the configuration information, and sends the first GRASP information to a second network device, where the configuration information includes VTEP device information, a plurality of pieces of VTEP device information are respectively used to indicate a plurality of VTEPs included in a VXLAN, the first GRASP information includes objective information, and the objective information is used to carry the configuration information. The second network device receives the first GRASP information and establishes a VXLAN tunnel based on the first GRASP information. In this way, automatic VXLAN configuration is implemented.

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