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Method, system and device for link discovery

A link discovery and link technology, applied in the field of link discovery, can solve problems such as automatic discovery of cross-layer links

Active Publication Date: 2017-06-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for link discovery, aiming at solving the problem of how to make the routing controller and the transmission network controller automatically discover the information of the cross-layer link

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  • Method, system and device for link discovery
  • Method, system and device for link discovery

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Embodiment Construction

[0097] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0098] The following descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

[0099] In an embodiment of the present invention, the flow of a link discovery method is as follows figure 1 As shown, the method includes the following steps:

[0100] Step 101, the first controller sends a first message to the first node, the first messag...

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Abstract

The present invention provides a method for link discovery. In the method, a first controller sends a first message to a first node. After receiving the first message, the first node reports the second link discovery A message is sent from the first port to the second node; the second node receives the second link discovery message at the second port, and sends the second link discovery message to the second controller according to the label. message, the second message carries the second link discovery message and the second port identifier; the second controller receives the second message, and extracts the first link discovery message The first port identifier in the second message and the second port identifier in the second message determine that there is a link between the first port of the first node and the second port of the second node, thereby implementing The routing controller and transport network controller can automatically discover the information of cross-layer links, reduce manual configuration, and achieve simple and high reliability.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a link discovery method, system and equipment. Background technique [0002] An operator's network is usually a multi-layer network. For example, the lower layer can use transmission technologies such as Synchronous Digital Hierarchy (SDH), Optical Transport Network (OTN), and Wavelength Division Multiplexing (WDM) to Construct a transmission network to carry upper-layer Internet Protocol (Internet Protocol, IP), MPLS and other types of packet switching networks. [0003] For a multi-layer network, centralized control can be adopted. For example, a centralized transport network controller is introduced into the transport network, and the transport network controller implements network topology discovery, path calculation, and path establishment. Among them, in terms of path establishment, the transport network controller can use such as the OpenFlow protocol to directly iss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/701H04L45/02H04L45/50
CPCH04L43/0811H04L41/12H04L45/02H04L45/50H04L45/64
Inventor 林毅
Owner HUAWEI TECH CO LTD
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