公开(公告)号：US10833986B2

公开(公告)日：2020-11-10

申请号：US16236782

申请日：2018-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741 ,  H04L12/725 ,  H04L12/715

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US11516130B2

公开(公告)日：2022-11-29

申请号：US17079415

申请日：2020-10-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/74 ,  H04L45/302 ,  H04L45/64

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US11303564B2

公开(公告)日：2022-04-12

申请号：US16878428

申请日：2020-05-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Junlin Zhang ,  Zhenbin Li

IPC: H04L12/66 ,  H04L45/50 ,  H04L12/64 ,  H04L45/74 ,  H04L49/351 ,  H04L61/5007 ,  H04L69/325

Abstract: A packet forwarding method, a packet forwarding system, and a provider edge (PE) device. The method applied to an Ingress PE includes: determining, in an Ethernet virtual private network instance (EVI), that a state of the EVI on a first Egress PE is Active, where an Ethernet virtual private network (EVPN) corresponding to the EVI includes a first customer edge (CE); determining that a state of the EVI on a second Egress PE is Inactive; skipping, forwarding a broadcast, unknown unicast, and multicast (BUM) packet to the second Egress PE, where the BUM packet is from the first CE; and forwarding, the BUM packet to the first Egress PE. According to the application, repeated BUM traffic that is transmitted in a bearer network and is not finally sent to a remote site is reduced; therefore, a waste of bandwidth in the bearer network is reduced.

公开(公告)号：US20230048749A1

公开(公告)日：2023-02-16

申请号：US17965861

申请日：2022-10-14

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/74 ,  H04L45/302 ,  H04L45/64

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US20210044525A1

公开(公告)日：2021-02-11

申请号：US17079415

申请日：2020-10-23

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741 ,  H04L12/725 ,  H04L12/715

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US10686698B2

公开(公告)日：2020-06-16

申请号：US14981520

申请日：2015-12-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Junlin Zhang ,  Zhenbin Li

IPC: H04L29/12 ,  H04L12/723 ,  H04L12/66 ,  H04L12/64 ,  H04L12/741 ,  H04L12/931 ,  H04L29/08

Abstract: The present application discloses a packet forwarding method, including: determining, by an Ingress PE in an Ethernet virtual private network instance (EVI), that a state of the EVI on a first Egress PE is Active, where an Ethernet virtual private network (EVPN) corresponding to the EVI includes a first CE; determining, by the Ingress PE, that a state of the EVI on a second Egress PE is Inactive; skipping, by the Ingress PE, forwarding a broadcast, unknown unicast, and multicast BUM packet to the second Egress PE, where the BUM packet is from the first CE; and forwarding, by the Ingress PE, the BUM packet to the first Egress PE. Repeated BUM traffic that is transmitted in a bearer network and is not finally sent to a remote site is reduced; therefore, a waste of bandwidth in the bearer network is reduced.

公开(公告)号：US11671364B2

公开(公告)日：2023-06-06

申请号：US17367911

申请日：2021-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/745 ,  H04L45/302 ,  H04L12/66 ,  H04L47/17 ,  H04L41/0803

CPC classification number: H04L45/745 ,  H04L12/66 ,  H04L45/306 ,  H04L41/0803 ,  H04L47/17

Abstract: The disclosure discloses a method. The method includes: determining, by a control node, routing entry information of a service function forwarding node in a SFP in the SFC, where the routing entry information records a mapping relationship between route prefix information and next hop information, the route prefix information includes a SPI and a SI, the SPI is used to identify the SFP, the SI is used to identify a location of the service function forwarding node in the SFP, and the next hop information is used to indicate a next hop node of the service function forwarding node in the SFP; and sending, by the control node, the routing entry information to the service function forwarding node, where the routing entry information is used by the service function forwarding node to generate a forwarding table used to instruct the service function forwarding node to forward a packet.

公开(公告)号：US11075839B2

公开(公告)日：2021-07-27

申请号：US16236593

申请日：2018-12-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741 ,  H04L12/725 ,  H04L12/66 ,  H04L12/801 ,  H04L12/24

Abstract: The disclosure application discloses a method. The method includes: determining, by a control node, routing entry information of a service function forwarding node in a SFP in the SFC, where the routing entry information records a mapping relationship between route prefix information and next hop information, the route prefix information includes a SPI and a SI, the SPI is used to identify the SFP, the SI is used to identify a location of the service function forwarding node in the SFP, and the next hop information is used to indicate a next hop node of the service function forwarding node in the SFP; and sending, by the control node, the routing entry information to the service function forwarding node, where the routing entry information is used by the service function forwarding node to generate a forwarding table used to instruct the service function forwarding node to forward a packet.

公开(公告)号：US20190140947A1

公开(公告)日：2019-05-09

申请号：US16236782

申请日：2018-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L45/306 ,  H04L45/64

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US11895026B2

公开(公告)日：2024-02-06

申请号：US17965861

申请日：2022-10-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L45/74 ,  H04L45/302 ,  H04L45/64

CPC classification number: H04L45/74 ,  H04L45/306 ,  H04L45/64

Abstract: A packet forwarding method, an apparatus, and a system for service function chaining (SFC)-based packet forwarding are disclosed. The packet forwarding method performed by a first service function forwarding node includes receiving a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information; receiving a first packet, where a header of the first packet carries traffic characteristic information of the first packet; determining, based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet; determining target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.