Huawei Technologies Co., Limited

Jingrong Xie

Yang Xia

Gang Yan

Fanghong Duan

Xuesong Geng

Shunwan Zhuang

Shuying Liu

Yisong Liu

Zhenbin Li

Sheng Fang

Naiwen Wei

Zhidan Zhu

Guoyi Chen

Heng Wang

Zhibo Hu

Bing Han

Jing Hu

Feng Zhang

Shuping Peng

Ju Wang

Taixu Tian

Rui Gu

Pingan Yang

Ting Hua

Jiajia Dong

Lingshuai Li

Wei Yi

Liangge Li

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.

Packet forwarding method, device, and system

A next-hop determining method is applied to a BIER domain based on bit index forwarding routing, and includes: A third device obtains first BIER information of a first device, an attribute of the first device, second BIER information of a second device, and an attribute of the second device, where the first BIER information includes a BFR-id of an edge BFR in a sub-domain, and the second BIER information includes the BFR-id of the edge BFR in the sub-domain. The third device determines, based on the first BIER information, the second BIER information, the attribute of the first device, and the attribute of the second device, a next hop to the edge BFR in the sub-domain.

Next hop determining method and apparatus

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.

IPV6 packet sending method, device, and system

In a packet processing method, when a tenant has different QoS requirements for different traffic, indication information that meets a QoS requirement for the traffic can be autonomously selected, and an SRv6 packet that includes the indication information is obtained and sent to a PE device in a provider network, so that the PE device in the provider network can be aware of the QoS requirement of the tenant for the traffic, to provide, for the traffic, a service that meets the QoS requirement.

Packet processing method and related device

A method for load balancing in a bit index explicit replication (BIER) network includes: a network device obtains a BIER packet, and determines, based on an identifier in the BIER packet, a target next-hop node that reaches a destination address of the first BIER packet from a plurality of next-hop nodes of the network device. Then, the network device generates a target forwarding table based on the target next-hop node, and forwards the first BIER packet based on the target forwarding table. A control plane does not perform load balancing on a BIER packet in a manner of delivering a large quantity of load balancing tables to a forwarding plane, but the forwarding plane of the network device generates the target forwarding table to perform load balancing on the BIER packet.

Method, apparatus, and device for load balancing in bit index explicit replication network

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.

Load sharing method, root node device, leaf node device, and system

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.

BIERv6 packet processing method, device, and system

A packet forwarding method includes that a first network device receives a multicast packet from a multicast source device and forwarded by a device group, where the device group includes a second network device and a third network device, and the multicast packet is forwarded to the first network device by one network device in the device group. The first network device determines, according to a reverse-path forwarding (RPF) entry, that the multicast packet is forwarded by the device group, where the RPF entry includes a first sub-entry instructing the first network device to forward the multicast packet sent by the second network device and a second sub-entry instructing the first network device to forward the multicast packet sent by the third network device. The first network device sends the multicast packet to a multicast destination device according to the RPF entry.

Packet forwarding method, first network device, and first device group

This application provides a packet sending method. The method includes: receiving, by a first network device, a data packet, and encapsulating the data packet to obtain a first packet, where the first packet includes an IPv6 header, a bit index explicit replication BIER header, and the data packet, and some bits of a source IPv6 address field in the IPv6 header include identification information of a first tenant; and sending, by the first network device, the first packet to a second network device, where the identification information of the first tenant is used by the second network device to determine to send the data packet to an interface, corresponding to the first tenant, of the second network device.

Packet sending method, device and system

This application provides a packet transmission method, apparatus, and device. For example, the method is performed by an ingress node. The ingress node obtains a second packet by using first node information carried in a first packet, where the first node information includes a first bit string indicating N next-hop devices of the ingress node and first reference information used for indexing second node information corresponding to a first intermediate node in the N next-hop devices, and the second packet includes a first identifier determined based on the first reference information. The ingress node sends the second packet to the first intermediate node. Because structures of the first bit string and the first reference information are used, a packet encoding manner is simple, so that packet transmission efficiency is improved.

Packet transmission method, apparatus, and device

A bit index explicit replication (BIER) operations, administration, and maintenance (OAM) detection method includes a bit forwarding ingress router (BFIR) obtaining a detection request packet based on a first BIER OAM packet, and sending the detection request packet to at least one bit forwarding egress router BFER. The detection request packet includes a first packet and a first packet header. The first packet is a packet obtained by encapsulating the first BIER OAM packet. The first packet header includes a bit string, and the bit string indicates the at least one bit forwarding egress router BFER that is to be measured.

BIER OAM detection method, device, and system

An IPv6 packet processing method and apparatus where a first routing device obtains an IPv6 packet, and sends the IPv6 packet to a next-hop routing device. The IPv6 packet includes an IPv6 extension header that includes preceding general indication information, where the preceding general indication information includes first information, and where the first information is used to indicate to process the IPv6 packet only on a data plane of a routing device and not to send the IPv6 packet to a CPU.

IPv6 packet processing method and apparatus

This application provides a packet transmission method, a correspondence obtaining method, and an apparatus and a system that are related to the foregoing method. For the packet transmission method, a first PE receives a first BIER packet sent by a first CE, determines, based on the received first BIER packet, a first VPN to which the first CE belongs, and transmits the first BIER packet based on the first VPN.

Packet transmission method, correspondence obtaining method, apparatus, and system

A reverse path forwarding (RPF) check method includes, after receiving a multicast data packet from a head node, a tail node may obtain a multicast source address, a multicast group address and encapsulation information that are carried in the multicast data packet. The tail node obtains, based on the multicast source address, the multicast group address, and a first correspondence, a first identifier identifying an upstream multicast hop (UMH) node corresponding to the multicast data packet. The tail node may further obtain, based on the encapsulation information of the multicast data packet and a second correspondence, a second identifier identifying the head node corresponding to the multicast data packet. After obtaining the first identifier and the second identifier, the tail node may perform an RPF check based on the first identifier and the second identifier.

Reverse path forwarding RPF check method and apparatus

A packet forwarding method. The method includes: a first node configures a first identifier of a first VPN and a first IPv6 address on a control plane. The first node sends a first indication message to a second node, where the first indication message carries the first identifier and the first IPv6 address. The second node first determines, based on locally configured information about the first VPN and the first identifier in the first indication message, a second identifier that is of the second node and that satisfies a preset correspondence with the first identifier, and then establishes a correspondence between the first IPv6 address and the second identifier. The first node encapsulates, on a forwarding plane based on the first IPv6 address, a multicast data packet belonging to the first VPN, to obtain a to-be-forwarded BIER packet and sends the to-be-forwarded BIER packet.

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Beijing, China

Jingrong Xie