公开(公告)号：US20170163572A1

公开(公告)日：2017-06-08

申请号：US15432762

申请日：2017-02-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Pu CHENG ,  Yinqiao XIE

IPC: H04L12/935 ,  H04L12/755 ,  H04L12/709

CPC classification number: H04L49/3009 ,  H04L45/021 ,  H04L45/245 ,  H04L45/563 ,  H04L45/586

Abstract: A data plane of a first network device receives a first packet sent by a multi-homing access device, sends the first packet to a control plane of the first network device, adds an MC-LAG identifier to the first packet to obtain a second packet, and sends the second packet to a data plane of a second network device through a data forwarding path. The control plane generates a forwarding entry according to an ingress port of the first packet on the first network device and the first packet, updates a first forwarding table on the control plane according to the forwarding entry, and sends the forwarding entry to the data plane of the first network device. The data plane of the first network device updates a second forwarding table on the data plane of the first network device according to the forwarding entry.

公开(公告)号：US20160269284A1

公开(公告)日：2016-09-15

申请号：US15164362

申请日：2016-05-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pu CHENG ,  Guangrui WU ,  Qinfeng GU

IPC: H04L12/721 ,  H04L12/741 ,  H04L12/707 ,  H04L12/66

CPC classification number: H04L45/66 ,  H04L12/4633 ,  H04L12/66 ,  H04L45/12 ,  H04L45/24 ,  H04L45/74

Abstract: The present application discloses a packet forwarding method and apparatus. An access device receives a first packet, where the first packet is an Ethernet packet, searches an equal-cost multi-path forwarding entry for a matched equal-cost path according to a destination MAC address of the Ethernet packet, where the equal-cost multi-path forwarding entry includes: a virtual MAC address corresponding to a gateway aggregation group, an identifier of each gateway device in the gateway aggregation group, and an outbound interface corresponding to the identifier of each gateway device, where the identifier is used to uniquely identify a gateway device in a large layer 2 network; and if N matched equal-cost paths are found, encapsulates the first packet into a second packet according to a first path in the N matched equal-cost paths, and forwards the second packet according to an outbound interface of the first path.

Abstract translation: 本申请公开了一种分组转发方法和装置。 接入设备接收第一个分组，其中第一分组是以太网分组，根据以太网分组的目的MAC地址搜索匹配的等价路径的等价多路转发表项，其中等成本 多路径转发条目包括：对应于网关聚合组的虚拟MAC地址，网关聚合组中的每个网关设备的标识符，以及与每个网关设备的标识符对应的出接口，其中该标识符被唯一地使用 在大二层网络中识别网关设备; 并且如果找到N个匹配的等价路径，则根据N个匹配的等价路径中的第一路径将第一分组封装成第二分组，并根据第一路径的出接口转发第二分组。

公开(公告)号：US20210160168A1

公开(公告)日：2021-05-27

申请号：US17100530

申请日：2020-11-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dongdong LI ,  Pu CHENG ,  Ying XIE

IPC: H04L12/721 ,  H04L12/803

Abstract: This application provides a path switching method and a related apparatus. In the path switching process, an ECMP table includes a first ECMP index of a first path group and a second ECMP index of a second path group; when all paths in the first path group have failed, a path group identifier corresponding to the first ECMP index may be changed from valid to invalid in the ECMP table, indicating that all paths in the first path group are unavailable. In this case, a path group identifier corresponding to the second ECMP index is valid, indicating that the second path group includes an available path, thereby completing switching between an active path and a standby path. In this process, only an identifier corresponding to the ECMP index needs to be updated, and therefore, the time consumed is relatively short, and the path switching delay can be effectively reduced.