Method and device for implementing odu0 channel bearer service
A technology for ODU0, carrying services, applied in the field of optical transport network, can solve the problems of waste of resources, unbearable construction cost, unsuitable for application, etc., to improve the utilization rate and ensure the effect of high-reliability transmission
Active Publication Date: 2020-08-07
CHINA TELECOM CORP LTD
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Problems solved by technology
However, the smallest container in the OTN technology system is ODU0 (Optical channel data unit, optical channel data unit), with a rate of 1.25G. Only one ODU0 channel can be directly occupied to carry services within 1G, resulting in waste of resources.
[0003] At present, OTN equipment supports Ethernet function, that is, it can support Layer 2 switching based on VLAN (Virtual Local Area Network, virtual local area network). It is suitable for application in large-scale networks, which is also one of the important reasons why the use of layer 2 switches cannot form large networks for a long time
[0004] OTN equipment supports the MPLS-TP (Multi-Protocol Label Switching Transport Profile, multi-protocol label switching transport application) protocol, using LSP (Label Switched Path, label switching path) labels and PW (Pseudo Wire, pseudowire) labels can be used on the ODU channel Realize the partition of smaller bandwidth services within the network, but after configuring the ODU channel, you need to plan the LSP and then create the PW, and finally configure the Ethernet service. There are many layers in the network and the service creation is complicated.
In addition, only the new packet OTN equipment with a unified switching matrix can support the MPLS-TP protocol. It is difficult to upgrade most of the old equipment in the existing network, and the construction cost brought by all new construction is unbearable.
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[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0030] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.
[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as any limitation of the invention, its application or uses.
[0032] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the...
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The invention discloses a method and a device for implementing an ODU0 (Optical Channel Data Unit) channel bearer service, and relates to the technical field of optical transport networks. The methodcomprises the steps of: performing SVLAN (Switching Virtual Local Area Network) division on a source ODU0 channel and a destination ODU0 channel related to the service with a predetermined bandwidth;and selecting a corresponding number of SVLANs in the source ODU0 channel and the destination ODU0 channel according to the service demand for end-to-end service bearer. The method and the device improve the utilization rate of ODU0 channels while ensuring high-reliability transmission of private line bandwidths.
Description
technical field [0001] The present invention relates to the technical field of optical transport network, in particular to a method and device for realizing ODU0 channel bearer service. Background technique [0002] At present, the speed of government-enterprise private line business continues to increase, but the demand for bandwidth within 100M still accounts for the vast majority. Such leased lines are currently carried by SDH (Synchronous Digital Hierarchy, Synchronous Digital Hierarchy) network, so most of these customers maintain the requirements for bandwidth guarantee and high reliability. OTN (Optical Transport Network, Optical Transport Network) has become the most important transmission network. As the future SDH network gradually enters the stage of decommissioning, the OTN network needs to be able to carry high-reliability private line services within 100M and guaranteed bandwidth. However, the smallest container in the OTN technology system is ODU0 (Optical ch...
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IPC IPC(8): H04L12/46H04J3/16H04Q11/00
CPCH04J3/1652H04L12/4641H04Q11/0066
Inventor 霍晓莉李俊杰荆瑞泉
Owner CHINA TELECOM CORP LTD