Negotiation method of link capability information, network equipment and communication system

A technology of capability information and network equipment, which is applied in the negotiation of link capability information and in the field of communication systems, can solve the problems of heavy workload and low efficiency, and achieve the effects of improving efficiency, reducing workload, and reducing manual participation
CN102006270BActive Publication Date: 2013-06-26HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2013-06-26

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Abstract

The present invention relates to a method for negotiating link capability information, a network device, and a communication system. The method includes: After a higher order optical channel data unit (ODU) link is established, a second node receives first higher order ODU link capability information supported by a first node at one end of the link, where the second node is located at the other end of the link; determines link capability information according to the first higher order ODU link capability information and second higher order ODU capability information that is supported by the second node; and sends the link capability information to the first node; or sends the second higher order ODU link capability information to the first node, so that the first node determines the link capability information according to the first higher order ODU link capability information and the second higher order ODU capability information. According to the embodiments of the present invention, efficiency of negotiating the higher order ODU link capability information is improved.
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Description

technical field

[0001] The invention relates to communication technology, in particular to a negotiation method, network equipment and communication system for link capability information of high-order optical channel data units. Background technique

[0002] Optical Transport Network (OTN) is a transparent transmission technology developed to meet the large-capacity and coarse-grained scheduling requirements at the backbone network level. With the release of different versions of the OTN standard, the types of signals supported by the OTN are also continuously enriched. The old OTN standard (ITU-TG.709 Amendment1) defines three signal types: ODU1, ODU2, ODU3, the bandwidth is 2.5Gb / s, 10Gb / s, 40Gb / s respectively, and the time slot type it supports is 2.5Gb / s. On the basis of the old OTN standard, in the new OTN standard (ITU-T G.709Amendment3 and G.sup43), ODU1, ODU2 and ODU3 also support 1.25Gb / s time slot type, and the new OTN standard also proposes to support 1.25 Ne...

Claims

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