公开(公告)号：US20240244002A1

公开(公告)日：2024-07-18

申请号：US18619600

申请日：2024-03-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Ge ,  Haibo Wang ,  Lili Wang ,  Futai Xu

IPC: H04L45/76 ,  H04L12/46 ,  H04L45/00 ,  H04L45/50

CPC classification number: H04L45/76 ,  H04L12/4641 ,  H04L45/34 ,  H04L45/50

Abstract: This application discloses a route advertisement method, a packet forwarding method, a device, and a system. A first network device obtains a first VPN route and a second VPN route that have a same route prefix and a same route distinguisher but different VPN identifiers and different next hops. The first network device allocates a third VPN identifier to the first VPN route and the second VPN route, and stores, on a forwarding plane, a first correspondence between the third VPN identifier and a first VPN identifier that is included in the first VPN route and a second correspondence between the third VPN identifier and a second VPN identifier that is included in the second VPN route. The first VPN route and the second VPN route that belong to a same VPN can form fast reroute or load balancing.