CN102664761B - Method for EPON (Ethernet passive optical network) system to be compatible with authorization of multilink ONU (optical network unit) and single-link ONU - Google Patents
Method for EPON (Ethernet passive optical network) system to be compatible with authorization of multilink ONU (optical network unit) and single-link ONU Download PDFInfo
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Abstract
The invention discloses a method for an EPON (Ethernet passive optical network) system to be compatible with authorization of a multilink ONU (optical network unit) and a single-link ONU. The method includes: expanding conventional ONU discovery messages into ONU expanded discovery messages which include multiple LLID (logic link identification) registration messages, the currently configured LLID number config Num and the reported LLED number report Num; caching an LLID registration message received into the ONU expanded discovery messages of an ONU which comes online, adding one to the config Num simultaneously, and reporting the config Num to an OLT (optical line terminal) after the config Num is equal to the report Num. Processing of the single-link ONU and the multilink ONU can be integrated, so that the EPON system can be compatible with reports and authorization of the multilink ONU and the single-link ONU, processing of upper software is simplified and authorization of the multilink ONU and the single-link ONU can be compatible by lower cost.
Description
Technical field
The present invention relates to EPON system, be specifically related to the method that EPON system compatible multilink and single-link ONU authorize.
Background technology
EPON (PON, Passive Optical Network) be a kind of prefect dielectric network, because it has eliminated the active equipment between local side and user side, therefore can avoid electromagnetic interference and the effects of lightning of external equipment, reduce the failure rate of circuit and external equipment, improve system reliability, can save maintenance cost simultaneously.Because the transparency of EPON business is better, adopt point-to-multipoint structure, passive fiber transmission means, can provide the application of the multiple business based on ethernet specification, and this technology has become a kind of most important user's access scheme of Access Network.
In recent years since, along with the continuous expansion of user of access network scale, the applied environment of various complexity, growing, various variety classeses, the ONU of different manufacturers needs OLT system compatible.Current main PON chip producer is divided into two kinds by the link number of supporting, a kind of single-link of only supporting, i.e. and LLID of each ONU, the another kind of multilink of supporting, an ONU can support to be no more than at most 8 LLID.It is exactly to provide different business QOS based on independent logical link on ONU that the ONU of multi-circuit managed has an advantage, and shortcoming is the complexity that has increased equipment.
If want compatible different ONU to authorize in system, wherein a very important problem is exactly: the problem that the multilink that need to solve and single-link ONU coexist, different ONU needs different management modes.And want the problem of compatible multilink and single-link, first need the problem in the face of reporting message, in the large scale system of multi-groove, systems soft ware framework is (master-slave communication module is the communication module of master control and line card) as shown in Figure 1, the known technology that this systems soft ware framework is this area, does not repeat them here.
Multilink ONU report the problem that can not ignore be exactly a plurality of links to report order be unwarrantable, possible base link has first reported up, and link below do not report up, also likely link has below reported up, and base link does not report up.If link is reached the standard grade, just directly report ONU to find that message, to ONU authenticated configuration software processing module, likely causes following problem:
(1) if ONU authenticated configuration software processing module is reached the standard grade and all started the identifying procedure of ONU each link, can cause same ONU to carry out repeatedly authentication processing, the meaningless ONU that extended authorizes the time.
(2), if reach the standard grade and authorize and pass through after just starting ONU identifying procedure until base link, likely cause the non-base link reality of reaching the standard grade after some not authorized.
(3) if reach the standard grade and authorize and pass through after just starting ONU identifying procedure until base link, start to recover the configuration of ONU.Now link below is not yet ready to, and may cause the configuration failure of some link.In like manner, if now user has carried out the configuration meeting failure as link DBA etc., cause user's puzzlement.
Therefore, existing ONU finds to report processing mode, for the authenticated configuration software processing module of ONU, multiple upper line morphology for single-link ONU, multilink ONU, cannot have that a unified way authenticates, mandate and configuration management, so just require ONU authenticated configuration software processing module to carry out differentiating and processing according to ONU form, so the logic of ONU authenticated configuration software module is too complicated, is unfavorable for safeguarding and transplanting.
Summary of the invention
Technical problem to be solved by this invention is to solve in the EPON network of compatible different ONU, and the logic of ONU authenticated configuration software processing module is too complicated, is unfavorable for the problem of safeguarding and transplanting.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is to provide a kind of method of EPON system compatible multilink and single-link ONU mandate, traditional ONU is found to message expansion is for ONU expansion discovery message, and described ONU expands the LLID number reportNum that finds that message comprises the LLID number configNum of a plurality of LLID registration messages and current configuration and reported; When ONU reaches the standard grade, receive after a LLID registration message, the ONU that is first buffered in this ONU expands and finds, in message, to make configNum add 1 simultaneously, when configNum equals reportNum, then reports OLT.
In said method, the number of described LLID registration message is configured according to transmitting-receiving user's number of queues.
In said method, the maximum number of described LLID registration message is 8.
In said method, the ONU concrete steps of processing of reaching the standard grade are as follows:
A10, for setting up node, each ONU reaching the standard grade forms node pool, and on each node, arrange and find information reporting administration module, find that whether the continuous inspection of information reporting administration module receives the LLID registration message of certain ONU, puts into node pool by this node after receiving;
A20, discovery information reporting administration module receive LLID registration message;
A30, the reportNum counting that the ONU of this node is expanded in discovery message add 1, and inquire about this ONU and expand the LLID number configNum that finds the current configuration in message, if configNum=1 turns A40; If configNum is greater than reportNum, turn A50; If configNum=reportNum, turns A60;
A40, discovery information reporting administration module are expanded discovery information reporting to OLT by this ONU, after having reported, delete this node from node pool, and OLT receives that this ONU expands after discovery message, and this ONU is configured to multi-circuit managed, and this ONU that resets;
A50, continuation receive other LLID registration message, turn A20;
A60, discovery information reporting administration module are expanded discovery information reporting to OLT by this ONU, after having reported, delete this node from node pool.
In said method, on ONU, give the correct time, take the MAC of this ONU as search key traversal node pool, if not, add a node.
The present invention finds that by traditional ONU extension of message is that ONU expands discovery message, described ONU expands the LLID number reportNum that finds that message comprises the LLID number configNum of a plurality of LLID registration messages and current configuration and reported, on ONU, give the correct time, receive after a LLID registration message, the ONU that is first buffered in this ONU expands and finds in message, make configNum add 1 simultaneously, when configNum equals reportNum, report again OLT, make the discovery information reporting of multilink ONU and single-link ONU there is the identical mode that reports, and the link discovery of the multilink ONU of different ONU also has the identical order that reports, facilitate the ONU authenticated configuration software processing module can unified management, concrete advantage is as follows:
(1) authentication of ONU, authorization flow be succinct, fast: ONU authenticated configuration software processing module can not receive that the ONU of non-base link finds message, only need to, when the ONU that receives base link finds message, start authentication processing flow process.The handling process of ONU authenticated configuration software module is clear like this, and has accelerated the Certificate Authority processing speed of ONU.
(2) each link mandate, the configuration information of multilink ONU there will not be loss, incomplete phenomenon: ONU authenticated configuration software module is received after the discovery message of base link, start the authentication processing flow process of ONU, authentication by after issue authorization command and configuration information.Now, because all links of the ONU of multilink have been collected, all can successfully find relevant link to complete the processing of expectation.
(3) reduced the coupling of ONU authenticated configuration software processing module, be convenient to transplant: the situation that particularly has the relation of interdepending for many link configuration of multilink ONU, because link is all ready when ONU authenticated configuration software processing module is carried out authorization configuration, module needn't be done for various concrete ONU types the dependence management of link configuration.Like this, ONU authenticated configuration software processing module needn't be limited by the constraint of the upper line morphology of ONU and ONU type completely, and flow processing independence and module are easy to transplant.
Accompanying drawing explanation
Fig. 1 is the systems soft ware framework of multi-groove EPON system;
Fig. 2 is for finding the structure chart of message in tradition discovery message and the present invention;
Fig. 3 is flow chart of the present invention.
Embodiment
In existing PON system, conventionally there is the ONU that a plurality of different manufacturers are produced, some ONU are that single-link manages (hereinafter to be referred as single-link ONU), and some ONU adopts multilink MP(Multilink Protocol) agreement manages (hereinafter to be referred as multilink ONU).For multilink ONU, while reporting multilink ONU, be usually random, likely only reported the LLID(logical link identification of base link, logical links mark) after, timeslice has just been used up, therefore the LLID of other links, until next timeslice just can report, will bring the difficulty in processing to the ONU authenticated configuration processing module of system like this.
A kind of method that provides EPON system compatible multilink and single-link ONU to authorize is provided main purpose of the present invention, ONU is found to message expansion is for ONU expansion discovery message, multilink ONU discovery message and single-link ONU discovery message are unified, and expanded and find message differentiation multilink ONU and single-link ONU by ONU.Driving layer in EPON system has added discovery information reporting administration module in addition, if find the ONU expansion that information reporting administration module is received, find that message shows that it is that single-link ONU finds message, this ONU is configured to multilink ONU, otherwise first the LLID receiving is cached in finding information reporting administration module, after the LLID that treats all links reports, again ONU is expanded and finds that message reports to OLT, thereby with less cost, shielded restriction and the requirement of various forms to ONU authenticated configuration processing module when ONU reaches the standard grade, make ONU authenticated configuration processing module can have unified processing mode to manage various ONU, increased the robustness of ONU authenticated configuration processing module, so authentication of ONU, authorize, configuration can complete quickly and easily.Below in conjunction with accompanying drawing, the present invention is described in detail.
The method that EPON system compatible multilink provided by the invention and single-link ONU authorize, from traditional ONU find message different be, ONU expands the LLID number reportNum that finds that message comprises the LLID number configNum of 8 LLID registration messages and current configuration and reported, as shown in Figure 2.Wherein, LLID number configNum can be configured according to user's needs, but be generally no more than 8, and ONU reaches the standard grade the concrete steps processed as shown in Figure 3:
The main control module of A10, OLT is set up a node for each ONU reaching the standard grade, all nodes form node pool, on each node, arrange one and find information reporting administration module, find that whether the continuous inspection of information reporting administration module receives the LLID registration message of certain ONU, puts into node pool by this node after receiving.
When finding that information reporting administration module is received the LLID registration message of an ONU, first the MAC of this ONU of take is search key traversal node pool, if the node not matching in node pool adds a node in node pool, and this LLID registration message is copied in the buffer memory of finding information reporting administration module, otherwise (having found this node) directly copies this LLID registration message in the buffer memory of finding information reporting administration module to;
A20, discovery information reporting administration module receive LLID registration message, and join in ONU expansion discovery message;
A30, the reportNum counting that the ONU of this node is expanded in discovery message add 1, and inquire about the LLID number configNum that this ONU expands the current configuration of finding message, if configNum=1, the ONU that shows current configuration is single-link ONU, turns A40 and changes this ONU into multilink schema management; Otherwise the ONU that current configuration is described is multilink ONU, then the LLID number configNum of more current configuration and the LLID number reportNum that reported, if configNum is greater than reportNum, turn A50; If configNum=reportNum, turns A60;
A40, discovery information reporting administration module are expanded this ONU to find that information reporting is to the authenticated configuration software processing module of OLT, after having reported, from node pool, delete this node, the authenticated configuration software processing module of OLT receives that this ONU expands after discovery message, this ONU is configured to multi-circuit managed, and this ONU that resets.ONU changes multilink into by single-link and need to reset and just can come into force;
A50, continuation receive other LLID registration message, turn A20;
A60, discovery information reporting administration module are expanded discovery information reporting to OLT by this ONU, after having reported, delete this node from node pool, because current ONU has been multilink pattern, so at this moment do not need the ONU that resets.
When ONU rolls off the production line, the MAC of this ONU of take is search key traversal node pool, finds corresponding node and deletes.
In said method, that no matter send discovery information is multilink ONU or single-link ONU, and after the LLID that comes up, reportNum counting all adds 1, by configNum, can learn the LLID number being configured.
LLID(Logical Link Identifier, logical links mark) be that EPON system assignment is to a kind of Digital ID of logical connection, in EPON system, LLID is distributed by OLT by webmaster, OLT can distinguish frame by which ONU is sent by LLID, or by the LLID revising in frame, frame is forwarded to corresponding ONU place.So, set up the path of OLT to ONU, ONU to OLT, complete between OLT and ONU and ONU and ONU between communicate by letter.The number of the LLID of each ONU can be by arranging, to support one or more queue transmitting-receiving user's data.
In the present invention, ONU expands and finds that message has the Unified Form of 8 LLID, and no matter what mode of management ONU is, the structure of the discovery message reporting is all unified.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.
Claims (4)
- The method that 1.EPON system compatible multilink and single-link ONU authorize, is characterized in that:Traditional ONU is found to message expansion is for ONU expansion discovery message, and described ONU expands the LLID number reportNum that finds that message comprises the LLID number configNum of a plurality of LLID registration messages and current configuration and reported;When ONU reaches the standard grade, receive after a LLID registration message, the ONU that is first buffered in this ONU expands and finds, in message, to make configNum add 1 simultaneously, when configNum equals reportNum, then reports OLT;The ONU concrete steps of processing of reaching the standard grade are as follows:A10, for setting up node, each ONU reaching the standard grade forms node pool, and on each node, arrange and find information reporting administration module, find that whether the continuous inspection of information reporting administration module receives the LLID registration message of certain ONU, puts into node pool by this node after receiving;A20, discovery information reporting administration module receive LLID registration message;A30, the reportNum counting that the ONU of this node is expanded in discovery message add 1, and inquire about this ONU and expand the LLID number configNum that finds the current configuration in message, if configNum=1 turns A40; If configNum is greater than reportNum, turn A50; If configNum=reportNum, turns A60;A40, discovery information reporting administration module are expanded discovery information reporting to OLT by this ONU, after having reported, delete this node from node pool, and OLT receives that this ONU expands after discovery message, and this ONU is configured to multi-circuit managed, and this ONU that resets;A50, continuation receive other LLID registration message, turn A20;A60, discovery information reporting administration module are expanded discovery information reporting to OLT by this ONU, after having reported, delete this node from node pool.
- 2. the method that EPON system compatible multilink as claimed in claim 1 and single-link ONU authorize, is characterized in that, the number of described LLID registration message is configured according to transmitting-receiving user's number of queues.
- 3. the method that EPON system compatible multilink as claimed in claim 1 and single-link ONU authorize, is characterized in that, the maximum number of described LLID registration message is 8.
- 4. the method that EPON system compatible multilink as claimed in claim 1 and single-link ONU authorize, is characterized in that,On ONU, give the correct time, take the MAC of this ONU as search key traversal node pool, if not, add a node.
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| CN104410513B (en) * | 2014-11-07 | 2017-09-29 | 武汉长光科技有限公司 | Lift method and its EPON system that EPON registers stability |
| CN105592179B (en) * | 2015-09-29 | 2019-04-05 | 新华三技术有限公司 | A kind of application of LLID, distribution method and device |
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Effective date of registration: 20170412 Address after: 430000 East Lake high tech Development Zone, Hubei Province, No. 6, No., high and new technology development zone, No. four Patentee after: Fenghuo Communication Science &. Technology Co., Ltd. Address before: East Lake high tech city of Wuhan province Hubei Dongxin road 430074 No. 5 East optical communication industry building in Wuhan Fenghuo Network Co Ltd Patentee before: Wuhan Fenghuo Network Co., Ltd. |