US 11,539,551 B2Granted

Data transmission method, device, and network system

AssigneeHuawei Technologies Co., Ltd.

InventorJiuyong Li

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Abstract

This application provides a data transmission method, a device, and a network system. The method is applied to a backbone device, and the backbone device is connected to at least two access devices. After obtaining first data that needs to be sent to a first user device, the backbone device determines a first tunnel interface identifier corresponding to the first user device. The first user device is a single-homing user device. The backbone device sends, based on the first tunnel interface identifier, a first data packet including the first data to a first access device of the at least two access devices. The first access device is configured with the first tunnel interface identifier. This can optimize a data forwarding path, implement traffic optimization for the single-homing user device, and reduce traffic pressure of the network system.

Claims18

Dependent claims

A data transmission method, applied to a backbone device, wherein the backbone device is connected to at least two access devices, the at least two access devices form a multi-chassis link aggregation group to connect to a multi-homing user device, wherein at least one multi-homing tunnel interface is configured for the multi-homing user device, and the method comprises:

after obtaining first data that needs to be sent to a first user device, determining, by the backbone device, a first tunnel interface identifier corresponding to the first user device, wherein the first user device is a single-homing user device;
and
sending, by the backbone device based on the first tunnel interface identifier, a first data packet comprising the first data to a first access device of the at least two access devices, wherein the first access device is configured with the first tunnel interface identifier, wherein the first tunnel interface identifier is an identifier of a first single-homing tunnel interface of the first access device, and the first single-homing tunnel interface transmits data that needs to be sent to a single-homing user device connecting to the first access device, and wherein the at least one multi-homing tunnel interface is configured with a tunnel interface identifier different than the first tunnel interface identifier.

A data transmission method, applied to a first access device, wherein the first access device and a second access device form a multi-chassis link aggregation group to connect to a multi-homing user device, wherein at least one multi-homing tunnel interface is configured for the multi-homing user device, the first access device further connects to at least one single-homing user device, and the method comprises:

receiving, by the first access device via a first single-homing tunnel interface, a first data packet comprising first data, wherein the first data is destined for a first user device, the first single-homing tunnel interface is indicated by a first tunnel interface identifier and transmits data that needs to be sent to a single-homing user device connected to the first access device, the first tunnel interface identifier is a tunnel interface identifier corresponding to the first user device, and the first user device is the single-homing user device connected to the first access device, and wherein the at least one multi-homing tunnel interface is configured with a tunnel interface identifier different than the first tunnel interface identifier;
processing, by the first access device, the first data packet to obtain the first data;
and
sending, by the first access device, the first data to the first user device.

1 more element

A backbone device, wherein the backbone device is configured to connect to at least two access devices, the at least two access devices form a multi-chassis link aggregation group to connect to a multi-homing user device, wherein at least one multi-homing tunnel interface is configured for the multi-homing user device, and the backbone device comprises:

a processing unit, configured to:
after obtaining first data that needs to be sent to a first user device, determine a first tunnel interface identifier corresponding to the first user device, wherein the first user device is a single-homing user device;
and
a communications unit, configured to:
send, based on the first tunnel interface identifier, a first data packet comprising the first data to a first access device of the at least two access devices wherein the first access device is configured with a single-homing tunnel interface indicated by the first tunnel interface identifier, wherein the first tunnel interface identifier is an identifier of a first single-homing tunnel interface of the first access device, and the first single-homing tunnel interface transmits data that needs to be sent to a single-homing user device connecting to the first access device, and wherein the at least one multi-homing tunnel interface is configured with a tunnel interface identifier different than the first tunnel interface identifier.

2 more elements

An access device, wherein the access device is a first access device, the first access device and a second access device form a multi-chassis link aggregation group to connect to a multi-homing user device, wherein at least one multi-homing tunnel interface is configured for the multi-homing user device, the first access device further connects to at least one single-homing user device, and the first access device comprises:

a first communications unit, configured to:
receive, by using a first single-homing tunnel interface, a first data packet comprising first data, wherein the first data is destined for a first user device, the first single-homing tunnel interface is indicated by a first tunnel interface identifier and transmits data that needs to be sent to a single-homing user device connected to the first access device, the first tunnel interface identifier is a tunnel interface identifier corresponding to the first user device, and the first user device is the single-homing user device connected to the first access device, and wherein the at least one multi-homing tunnel interface is configured with a tunnel interface identifier different than the first tunnel interface identifier;
a processing unit, configured to process the first data packet to obtain the first data;
and
a second communications unit, configured to send the first data to the first user device.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/924,734Filed 9 Jul 2020 · continuation
Priority: CN 201810026227.111 Jan 2018
Published: US 2020/0374155 A126 Nov 2020
Granted: 27 Dec 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H04L 12/4633
Interconnection of networks: interconnection of networks using encapsulation techniques, e.g. tunneling
H04L 45/245
Multipath: link aggregation, e.g. trunking
H04L 12/4641
Interconnection of networks: virtual LANs, VLANs, e.g. virtual private networks [VPN]
H04L 12/4679
Dynamic sharing of VLAN information amongst network nodes: arrangements for the registration or de-registration of VLAN attribute values, e.g.…