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Flow specification protocol based communication method, device and system

A communication method and device technology, applied in the communication field, achieves the effects of flexible service arrangement, providing communication efficiency, and saving signaling overhead

Active Publication Date: 2017-09-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, expanding related applications in the traditional way will lead to unlimited expansion of the BGP FlowSpec protocol

Method used

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  • Flow specification protocol based communication method, device and system
  • Flow specification protocol based communication method, device and system
  • Flow specification protocol based communication method, device and system

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Embodiment Construction

[0132] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0133] In order to facilitate understanding of the embodiments of the present invention, several concepts that will be introduced in the description of the embodiments of the present invention are firstly introduced here.

[0134] Multi-Protocol Label Switching (MPLS) is a new generation IP high-speed backbone network switching standard. MPLS uses labels to forward data. When a packet enters the network, a fixed-length short label is assigned to it, an...

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Abstract

The embodiment of the invention provides a flow specification based communication method, device and system. The flow specification based communication method comprises the steps of obtaining a demand in which a first resource on a forwarding device needs to correlate with a second resource on the forwarding device by a controller; and sending a BGP Flow Spec (Border Gateway Protocol Flow Specification) protocol message to the forwarding device, wherein the BGP Flow Spec protocol message comprises a network layer accessibility information field and an extension group attribute field, the network layer accessibility information field carries characteristic information of the first resource, the extension group attribute field carries GID (Global ID) used for indicating the second resource, and the BGP Flow Spec protocol message is used for indicating correlation of the first resource and the second resource. The embodiment can efficiently avoid unrestricted extension of the BGP Flow Spec protocol.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and more specifically, to a communication method, device and system based on the FlowSpec protocol. Background technique [0002] Border Gateway Protocol (Border Gateway Protocol, BGP) is a dynamic routing protocol used between autonomous systems (Autonomous System, AS). The three early versions are BGP-1 (RFC1105), BGP-2 ( RFC1163) and BGP-3 (RFC1267), are mainly used to exchange reachability routing information between ASs, build propagation paths between AS domains, prevent routing loops, and apply some routing policies at the AS level. The currently used version is BGP-4 (RFC4271). As a de facto Internet (Internet) external routing protocol standard, BGP is widely used among Internet Service Providers (Internet Service Providers, ISPs). [0003] BGP flow rules (Flow Specification, Flow Spec) (RFC 5575), which means that the traffic policy is passed to the BGP Flow Specifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/08H04L45/586H04L45/74
CPCH04L69/03H04L69/06H04L69/325H04L12/4641H04L12/4645H04L9/40H04L45/04H04L45/54H04L45/586H04L45/64
Inventor 李振斌庄顺万陈霞吴楠梁乾灯
Owner HUAWEI TECH CO LTD
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