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A method and system for obtaining a link overhead value of an ip link

A link overhead and IP chain technology, applied in the field of network communication, can solve problems such as unreasonable calculation methods, inability to reflect the difference in optical transmission paths, and inability to support the wide application of IP and optical fusion solutions

Active Publication Date: 2017-02-01
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] This method of dividing the reference bandwidth by the interface bandwidth value and then multiplying by 10 to calculate the metric value is a relatively simple calculation method. When the bandwidths of the two links are the same, the calculated metric value is the same. According to the metric value The shortest path to the destination is also the same, but the optical transmission path is not necessarily the same, and the calculation method of the Metric value cannot reflect the difference in the optical transmission path, so this calculation method is unreasonable, which will lead to certain problems in deployment. Unable to support the wide application of IP and optical convergence solutions, which limits the application scenarios of IP and optical convergence solutions; if this difference is reflected through manual configuration, it will bring a very large workload, and it is not feasible in practical applications

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  • A method and system for obtaining a link overhead value of an ip link
  • A method and system for obtaining a link overhead value of an ip link
  • A method and system for obtaining a link overhead value of an ip link

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Embodiment 1

[0083] Please refer to image 3 and Figure 4 , are respectively a flow diagram and a networking diagram of Embodiment 1 of a method for obtaining a link overhead value of an IP link provided by an embodiment of the present invention. In this embodiment, an IP link is obtained through a Multi-layer PCE server The method of Metric value, in the present embodiment, Metric generation unit is the PCE server of optical layer; As image 3 As shown, the method includes the following steps:

[0084] Step 301, the PCC of the IP layer sends the request message of the Metric value of the IP link to the PCE server of the IP / MPLS network through the PCEP; the request message of the Metric value of the IP link is an embodiment of the present invention The message newly defined in , the request message of the metric value of the IP link is used to request the calculation of the metric value for the specified link, and the request message of the metric value of the IP link carries the IP ad...

Embodiment 2

[0092] Please refer to figure 1 and Figure 5 , Figure 5 It is a schematic flowchart of Embodiment 2 of a method for obtaining a link overhead value of an IP link provided by an embodiment of the present invention. This embodiment is a method for obtaining a Metric value of an IP link through GMPLS UNI. In this embodiment, The Metric generation unit is the originating end optical device of the optical layer; for example figure 1 As shown, the IP / MPLS layer is the client side of the optical layer, the optical layer is the network side of the IP / MPLS layer, and the GMPLS UNI tunnel is the communication channel between the IP / MPLS layer and the optical layer. In the following description, the initiation of the GMPLS UNI tunnel The end is called the source client (such as figure 1 R1 in ), referred to as the source C, and the destination client is called the sink C (such as figure 1 R4 in ), the optical device connected to source C is the initiator optical device of the optic...

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Abstract

The present invention provides a method for acquiring the link overhead value of an IP link, comprising: a Metric generating unit of an optical layer receives a request message of a Metric value of an IP link from an IP layer, and obtains the metric value according to characteristic parameters of an optical transmission path. The Metric value of the path specified in the request message of the Metric value of the IP link; the present invention also provides a system for obtaining the link overhead value of the IP link. According to the technical solution provided by the present invention, a reasonable Metric value of the IP link can be obtained.

Description

[0001] 【Technical field】 [0002] The invention relates to network communication technology, in particular to a method and system for acquiring link overhead values ​​of IP links. [0003] 【Background technique】 [0004] GMPLS (Generalized Multi-Protocol Label Switching) technology is derived from MPLS (Multi-Protocol Label Switching, multi-protocol label switching) technology. Existing MPLS-related protocols, such as RSVP-TE (Resource ReServation Protocol-Traffic Engineering, resource reservation protocol based on traffic engineering), OSPF-TE (Open Shortest Path First-Traffic Engineering, open shortest path first based on traffic engineering) ) protocol, ISIS-TE (Intermediate System to Intermediate System-Traffic Engineering, intermediate system to intermediate system based on traffic engineering) protocol, etc. As part of the GMPLS protocol framework, these extended protocols increase support for various switching technologies and expand the meaning of labels. GMPLS technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/733H04L12/723H04L12/46H04L45/122H04L45/50
CPCH04L12/6418
Inventor 李振斌
Owner BEIJING HUAWEI DIGITAL TECH