CN100561945C

CN100561945C - The unified management method of Ethernet passive optical network multi-criterion ONU

Info

Publication number: CN100561945C
Application number: CNB2007100187126A
Authority: CN
Inventors: 徐华
Original assignee: Xian Datang Telecom Co Ltd
Current assignee: Xian Datang Telecom Co Ltd
Priority date: 2007-11-07
Filing date: 2007-11-07
Publication date: 2009-11-18
Anticipated expiration: 2027-11-07
Also published as: CN101179427A

Abstract

The present invention relates to a kind of in Ethernet passive optical network the management method to ONU, especially the unified management method of Ethernet passive optical network multi-criterion ONU, be characterized in, comprise the following steps: (1), when ONU registers, it relevant information that comprises identification of the manufacturer is reported OLT; (2), that the information that reports according to ONU of OLT is carried out type to ONU is abstract, generates the logical type of ONU, and set up the ONU logical type and arrive the mapping relations of command set, while alert network guard system again to specifications set; (3), network management system is according to the specifications set of this ONU logical type correspondence, the command set of specifications set support is presented on the EMS interface, so that the user controls and manages.Multi-criterion ONU unified management method proposed by the invention, autgmentability is strong, be convenient to realize, compatible good, is applicable to multiple OUI standard and ONU type.

Description

The unified management method of Ethernet passive optical network multi-criterion ONU

Technical field

The present invention relates to a kind of in Ethernet passive optical network the unified management method of the management method to ONU, especially Ethernet passive optical network multi-criterion ONU.

Background technology

The notion of EPON (PON) is of long duration, and it has the fiber resource of saving, to the transparent characteristics of procotol, is playing the part of more and more important role in optical access network.Simultaneously, Ethernet (Ethernet) technology is through vicennial development, and simple and practical with it, cheap characteristic has almost been ruled local area network (LAN) fully, and at the optimum carrier that in fact is proved to be to carry the IP packet.Along with IP operation shared ratio in metropolitan area and primary transmission constantly rises, Ethernet also in the improvement by aspects such as transmission rate, manageabilitys, permeates on access, metropolitan area even backbone network gradually.And combining of Ethernet and PON just produced Ethernet passive optical network (EPON).It has possessed the advantage of Ethernet and PON simultaneously, is just becoming the hot technology in the optical access network field.

Typical EPON system is by OLT, ONU, and POS forms, referring to Fig. 1.OLT (OpticalLine Terminal) centre machine room, it can be a L2 switch or L3 router.At down direction, it provides the optical fiber interface towards passive optical-fiber network; At up direction, OLT provides a plurality of GE (GigabitEthernet) interface.After the ethernet technology standard of the 10Gbit/s typing in the future, OLT also can support similar high-speed interface, and for the agreement of supporting that other are popular, OLT also supports ATM, the interface standard of the SDH/SONET of speed such as FR and OC3/12/48/192.OLT realizes the access of traditional TDM speech by supporting the E1 mouth.Aspect the united net management of EPON, OLT is main control centre, realizes the five functional of network management.As by on OLT, controlling the customer service quality, realize network security control, obtain system mode and user state information etc., can also provide effective user isolation by reading the MIB storehouse by writing Access Control List (ACL) by definition user bandwidth parameter.

POS (Passive Optical Splitter) is the passive fiber splitter, is an inactive component that connects OLT and ONU.Its function is distribution downlink data and concentrated upstream data.The deployment of passive optical splitters is quite flexible.Owing to be passive operation, almost can be adapted to all environment.The separated time rate of a general POS is 8,16,32, and can carry out multistage connection.

ONU (Optical Network Unit) is placed on the CPE of user resident side, and the ONU among the EPON mainly adopts Ethernet protocol.The exchange of the Ethernet second layer or even the 3rd layer of routing function with low cost in the ONU of middle bandwidth and high bandwidth, have been realized.Such ONU can provide very high shared bandwidth by piling up for a plurality of end users.Owing to use Ethernet protocol, in the process of communication, just no longer need protocol conversion, realize the transparent transmission of ONU to user data.Can realize data forwarding at a high speed between from OLT to ONU.

The local side apparatus in the EPON system and the interoperability of ustomer premises access equipment are the key issues that is related to EPON technical development and application process.How the interoperability function (ONU of different manufacturers) of ONU and the featured function (the manufacturer's featured function that does not have interoperability) of ONU being carried out unified management, is the problem that the EPON management system need solve.

Summary of the invention

The unified management method that the purpose of this invention is to provide a kind of Ethernet passive optical network multi-criterion ONU, make the EPON management system (to comprise different port types to various types of ONU, different port numbers), the ONU of each manufacturers produce (supporting the CTC standard) realizes unified management, to adapt to different networkings and application demand.

For achieving the above object, the technical solution used in the present invention is:

A kind of unified management method of Ethernet passive optical network multi-criterion ONU, its special feature be, comprises the following steps: (1), when ONU registers, and it relevant information that comprises identification of the manufacturer is reported OLT; (2), that the information that reports according to ONU of OLT is carried out type to ONU is abstract, generates the logical type of ONU, and set up the ONU logical type and arrive the mapping relations of command set, while alert network guard system again to specifications set; (3), network management system is according to the specifications set of this ONU logical type correspondence, the command set of specifications set support is presented on the EMS interface, so that the user controls and manages.

Wherein OLT is divided into this manufacturer and Fei Ben manufacturer according to the identification of the manufacturer that ONU reports with ONU in the step (2), read the ONU physical type for this manufacturer from the self-defined information territory, for Fei Ben manufacturer pass through read OUI and identify to determine the OUI standard, it is abstract to carry out the ONU type according to ONU physical type or OUI standard then, thereby the logical type of ONU is divided into CTC, CTC tape swap, CTC not tape swap, tape swap or non-tape swap.

Multi-criterion ONU unified management method proposed by the invention, autgmentability is strong, be convenient to realize, compatible good, is applicable to multiple OUI standard and ONU type.

Description of drawings

Accompanying drawing 1 is EPON reference configuration figure;

Accompanying drawing 2 is abstract and specifications set mapping flow chart for ONU type of the present invention.

Embodiment

In order to realize purpose of the present invention, have two technical problems to need to solve:

1), carry out abstract to all kinds ONU

The production firm of ONU is more at present, and same manufacturer also has the ONU of number of different types.Realize the unified management of multi-criterion ONU, the OLT management system just need be carried out abstract to various manufacturers, various types of ONU.How ONU is carried out abstractly, adopting which type of principle of abstraction is a key issue.

2), the OLT management system is to the identification of ONU type and command set thereof

After adopting the ONU type abstract, what the OLT management system was managed is the abstract later logical type of ONU.When actual type and the production firm when reporting OLT of ONU with oneself, OLT need be mapped to the actual type of ONU the logical type of ONU and provide the command set that the type is supported, promptly the OLT management system need increase ONU type identification and command set mapping function.

In order to solve above-mentioned two technical problems, the present invention by the following technical solutions.Adopt a kind of unified management method of multi-criterion ONU, it comprises:

1), management system is carried out abstract to ONU;

The present invention adopts following principle to carry out abstract to ONU.

Carry out abstract according to the OUI in the EPON OAM information Organization Specific OAMPDU Data territory to ONU.OUI is mechanism's uniqueness sign, and specific OUI is representing the specific specifications of this mechanism's definition.By OUI ONU is carried out the abstract ONU that is applicable to that mainly Fei Ben manufacturer produces.The ONU of different vendor is as long as support that identical OUI just can be abstracted into a class ONU.For example, " EPON of China Telecom equipment and technology requires (V1.3) " is exactly the EPON devices interconnect intercommunication standard of China Telecom's definition, and its OUI is 0X111111, if ONU supports this OUI, illustrates that then this ONU supports CTC (interconnecting) standard of China Telecom's regulation.

For the ONU that this manufacturer produces, the general employing carried out abstract method by function.Because the ONU that this manufacturer produces is easy to increase some self-defining information and discerns ONU type and classification.The simplest and the most practical method is classified by the ONU function exactly.EPON equipment, most important function are exactly ethernet feature and PON correlation function.That the PON function is mainly used at present is EPON, and the difference of all ONU is not big especially; Ethernet feature is according to ONU tape swap function and variant whether, so can be according to ONU tape swap function and ONU is classified whether.For example: can be divided into not tape swap ONU and tape swap ONU to ONU.

Just can carry out abstract based on above two basic principles to various ONU.At present, according to OUI and ONU whether the tape swap function can with ONU abstract be CTC ONU, specifications set such as non-tape swap ONU, tape swap ONU.If ONU supports a plurality of specifications set simultaneously, can merge accordingly, generate new specifications set.For example: CTC is tape swap ONU and CTC tape swap ONU not, and the former refers to promptly support the CTC standard to support the not ONU of tape swap function again, and the latter refers to promptly support the CTC standard ONU of tenaculum function of exchange again.

2), Optical Network Terminal (OLT), the ONU type is discerned and command set mapping;

The principle of abstraction that OLT equipment need be described according to the present invention, it is abstract that the relevant information that reports according to ONU is carried out type to ONU, generates the logical type of ONU automatically, and set up the mapping relations of ONU logical type to command set.See Fig. 2.

The support of EPON system is expanded by the information TLV to INFO OAMPDU, with OAM discovery that realizes expansion and the capability advertisement of expanding.After the OAM of standard found to finish, by the OAM discovery procedure of expansion, OLT equipment just can know whether this ONU supports the OUI that certain is specific, and according to the OUI tabulation that equipment is supported, determined whether ONU supports this OUI specifications set.

For the ONU of this manufacturer, but OLT and ONU equipment room self-defined information, and undertaken alternately by expansion OAM message.The physical type of ONU can provide in self-defined information, and OLT equipment has self-defining ONU physical type tabulation and logical type thereof.When ONU reported its physical type of OLT by expansion OAM message, OLT was by the retrieval type correspondence table logical type of ONU as can be known at once just.

Among the present invention, in the OLT side, every kind of ONU logical type is all corresponding with corresponding specifications set, and each specifications set is corresponding with a series of command set again.The OLT side should be set up this corresponding relation, and finally by concrete command set control and management ONU, thereby the unified management of realization multi-criterion ONU.

3), optical network unit (ONU), report its actual type and OUI the sign;

ONU equipment should be able to dispose the OUI tabulation and the self-defining physical type of manufacturer of its support when dispatching from the factory.And these information are reported OLT by registration message.

In order to realize the present invention, ONU according to requirement of the present invention, should dispose the OUI tabulation and the self-defining physical type thereof of its support when dispatching from the factory.

As shown in Figure 1, build an EPON system.ONU registers back (comprising that MPCP discovery procedure, standard OAM find, expand OAM discovery etc.), and OLT equipment can generate the ONU logical type, and report the EMS network management system automatically according to the method for the present invention's description.Network management system can be according to the specifications set of this ONU logical type correspondence, and the command set of specifications set support is presented on the EMS interface, and the user just can control and manage according to the regulatory requirement of reality ONU.

The invention process is very simple, as long as configure the configuration of dispatching from the factory of ONU on request, has just realized the unified management of multi-criterion ONU easily.

Above-mentioned execution mode only is an exemplary, it will be apparent to those skilled in the art that do not breaking away from the spirit and scope of the present invention basis, can make amendment and changes the present invention.

Claims

1, a kind of unified management method of many standards of Ethernet passive optical network optical network unit ONU is characterized in that, comprises the following steps:

(1), when ONU registers, it relevant information that comprises identification of the manufacturer is reported optical line terminal OLT;

(2), that the information that reports according to ONU of OLT is carried out type to ONU is abstract, generates the logical type of ONU, and set up the ONU logical type and arrive the mapping relations of command set, while alert network guard system again to specifications set;

(3), network management system is according to the specifications set of this ONU logical type correspondence, the command set of specifications set support is presented on the network management system interface, so that the user controls and manages.

2, the unified management method of Ethernet passive optical network multi-criterion ONU as claimed in claim 1 is characterized in that:

OLT is divided into this manufacturer and Fei Ben manufacturer according to the identification of the manufacturer that ONU reports with ONU in the step (2), read the ONU physical type for this manufacturer from the self-defined information territory, the reading mechanism uniqueness sign OUI that passes through for Fei Ben manufacturer identifies to determine the OUI standard, it is abstract to carry out the ONU type according to ONU physical type or OUI standard then, thereby the logical type of ONU is divided into the standard that interconnects of supporting China Telecom's regulation, the tape swap function, tape swap function not, support the interconnect standard and the tape swap function of China Telecom's regulation, or the interconnect standard and the non-tape swap function of support China Telecom regulation.