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Title:
CROSS-DOMAIN PATH COMPUTATION METHOD FOR MULTI-DOMAIN CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2018/223617
Kind Code:
A1
Abstract:
The present invention discloses a cross-domain path computation method for a multi-domain controller, comprising: single-domain controllers constructing intra-domain topology structures according to nodes and inter-node links in individual domains, and reporting domain identification information of all of the nodes in the individual domains; a multi-domain controller constructing an inter-domain topology structure according to domains and inter-domain links controlled by the multi-domain controller; the multi-domain controller computing, based on the inter-domain topology structure, a domain sequence of all domains passed through from a domain in which a source node is located to a domain in which a destination node is located; the multi-domain controller initiating an intra-domain path computation request to single-domain controllers of the domains in the domain sequence, and the single-domain controller computing intra-domain paths according to the intra-domain topology structures and reporting intra-domain path computation results; and the multi-domain controller obtaining a plurality of cross-domain paths by combination according to the intra-domain path computation results of the domains and the inter-domain links, and selecting an optimal path as a multi-domain path. The present invention resolves the problem of cross-domain path computation in complex large-scale multi-domain networks and can greatly accelerate the application of SDNs and generate economic benefit.

Inventors:
LIU JINGQIU (CN)
Application Number:
PCT/CN2017/111552
Publication Date:
December 13, 2018
Filing Date:
November 17, 2017
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Assignee:
FIBERHOME TELECOMMUNICATION TECH CO LTD (CN)
International Classes:
H04L45/02
Domestic Patent References:
WO2016180068A12016-11-17
Foreign References:
CN107332768A2017-11-07
CN105656771A2016-06-08
CN105634941A2016-06-01
CN106375214A2017-02-01
Attorney, Agent or Firm:
WUHAN ZHI QUAN PATENT AGENCY (CN)
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