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A data transmission method, controller and forwarding device

A forwarding device and data transmission technology, which is applied in the field of data transmission and can solve the problems of data transmission being monitored by the network and insufficient security performance.

Active Publication Date: 2018-03-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the usual OF-based SDN, the data transmission between OF switches may be monitored, that is, there is still insufficient security performance, and there is a risk of being monitored by the network during data transmission.

Method used

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  • A data transmission method, controller and forwarding device
  • A data transmission method, controller and forwarding device
  • A data transmission method, controller and forwarding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0162] The method provided in the fifth embodiment corresponds to the method provided in the first embodiment. The following describes the data transmission method provided by Embodiment 5 of the present invention from the side of the first forwarding device.

[0163] 501. The first forwarding device receives the first flow entry sent by the controller.

[0164] For example, the first flow entry includes a first match field and a first transformation instruction. The first matching field is the same as the first matching field in the first embodiment, and the first transformation instruction is the same as the first transformation instruction in the first embodiment.

[0165] 502. The first forwarding device transforms the first metadata into second metadata according to the first transformation instruction, so as to obtain a second data packet.

[0166] For example, after the first forwarding device receives the first flow entry sent by the controller, if the first metadata...

Embodiment 6

[0170] The method of the sixth embodiment corresponds to the method of the second embodiment. The following describes the data transmission method provided by Embodiment 6 of the present invention from the side of the first forwarding device.

[0171] 601. The first forwarding device receives the first flow entry sent by the controller.

[0172] For example, the first flow entry in this embodiment is the same as the first flow entry in the second embodiment, and details are not described herein again. The first forwarding device may receive the first flow entry sent by the controller according to the OF protocol.

[0173] 602. The first forwarding device processes the first metadata of the first data packet according to the first transformation instruction.

[0174] For example, after the first forwarding device receives the first data packet, if the first metadata of the first data packet matches the first matching field, the first forwarding device converts the first data ...

Embodiment 7

[0184] The method provided in the seventh embodiment corresponds to the method provided in the third embodiment. The following describes the data transmission method provided by Embodiment 7 from the perspective of the second forwarding device.

[0185] 701. The second forwarding device receives the first flow entry sent by the controller.

[0186] For example, the first flow entry received by the second forwarding device is the same as the first flow entry in Embodiment 3, and details are not described herein again.

[0187] 702. The second forwarding device restores the second metadata to the first metadata according to the first restoration instruction, so as to obtain the first data packet.

[0188] For example, after the second forwarding device receives the first flow entry sent by the controller, when the second forwarding device receives the second data packet, if the second metadata of the second data packet is the same as the first flow entry The first matching fie...

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Abstract

The present application provides a data transmission method, which is used to prevent data transmission from being monitored by a monitoring device and improve the security of data transmission. The method includes: the controller obtains a first flow entry, the first flow entry includes a first matching field and a first conversion instruction, the first matching field is used to match first metadata, and the first metadata is Metadata in the first data packet received by the first forwarding device, the first transformation instruction is used to transform the first metadata matching the first matching field into second metadata; the control The router sends the first flow entry to the first forwarding device. The present application also provides a controller and a forwarding device, which can be used to improve the security of data transmission.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data transmission method, a controller and a forwarding device. Background technique [0002] With the continuous development of the network and the improvement of people's demand for network performance, researchers have added many complex functions to the architecture of routers, such as Open Shortest Path First (English: Open Shortest PathFirst, referred to as: OSPF), Border Gateway Protocol (English: Border Gateway Protocol, referred to as: BGP), multicast, traffic engineering, network address translation (English: Network Address Translation, referred to as: NAT), firewall, multi-protocol label switching (English: Multiprotocol Label Switching, referred to as MPLS), etc. . This makes switching devices such as routers more and more bloated and the space for performance improvement is getting smaller and smaller. [0003] To solve this problem, researchers proposed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/937H04L12/741H04L45/74
Inventor 何丹萍
Owner HUAWEI TECH CO LTD