CN102664761A - 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 the 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) is a kind of prefect dielectric network; Because it has eliminated the active equipment between local side and the user side, therefore can avoid the 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 arrive multipoint configuration, the passive fiber transmission means can provide based on the multiple business of ethernet specification and use, 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 complicacies, growing, various variety classeses, the ONU of different manufacturers needs the 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, promptly an ONU can support to be no more than at most 8 LLID.It is exactly different service QOS to be provided based on the independent logical link on ONU that the ONU of multilink management has an advantage, and shortcoming is the complexity that has increased equipment.
If want compatible different ONU to authorize in the system, a wherein very important problem is exactly: need the multilink of solution and the problem of single-link ONU coexistence, different ONU needs different management modes.And want the problem of compatible multilink and single-link; At first demand side is to the problem of reporting message; In the large scale system of multi-groove; Systems soft ware framework (the master-slave communication module is the communication module of master control and ply-yarn drill) as shown in Figure 1, this systems soft ware framework is the known technology of this area, repeats no more at this.
Multilink ONU report the problem that can not ignore be exactly a plurality of links to report order be unwarrantable; Possible base link has reported up earlier; And the link of back does not report up, and link that also might the back has reported up, and the base link does not report up.Just directly report ONU to find that message to ONU authenticated configuration software processing module, then might cause following problem if link is reached the standard grade:
(1) all start the identifying procedure of ONU if ONU authenticated configuration software processing module is reached the standard grade to each link, can cause same ONU is carried out repeatedly authentication processing, the meaningless ONU that prolonged authorizes the time.
(2) if treating that the base link reaches the standard grade just to start to authorize behind the ONU identifying procedure passes through, the non-base link reality that might cause reaching the standard grade after some does not obtain authorizing.
(3) if treating that the base link reaches the standard grade just to start to authorize behind the ONU identifying procedure passes through, begin to recover the configuration of ONU.This moment, the link of back was still unripe, possibly cause the configuration failure of some link.In like manner, if user's this moment has carried out can failing like the configuration of link DBA etc., cause user's puzzlement.
Therefore; Existing ONU finds to report processing mode, for the authenticated configuration software processing module of ONU, to the multiple line morphology of going up of single-link ONU, multilink ONU; Can't there be a unified way to carry out authentication, mandate and configuration management; So just require ONU authenticated configuration software processing module to carry out differentiating and processing, so the logic of ONU authenticated configuration software module is too complicated, is unfavorable for safeguarding and transplanting according to the ONU form.
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 scheme that the present invention adopted provides the method for a kind of EPON system compatible multilink and single-link ONU mandate; Traditional ONU is found that it is ONU expansion discovery message that message is expanded, and the LLID number reportNum that message comprises the LLID number configNum of a plurality of LLID registration messages and current configuration and reported is found in said ONU expansion; When ONU reaches the standard grade, receive a LLID registration message after, its ONU that is buffered in this ONU is expanded find to make configNum add 1 simultaneously in the message earlier, when configNum equals reportNum, report OLT again.
In said method, the number of said LLID registration message is configured according to transmitting-receiving user's number of queues.
In said method, the maximum number of said LLID registration message is 8.
In said method, the ONU concrete steps of handling of reaching the standard grade are following:
A10,, each ONU that reaches the standard grade forms node pool for setting up node; And on each node, be provided with and find the information reporting administration module; Find that whether the continuous inspection of information reporting administration module receives the LLID registration message of certain ONU, then puts into node pool with this node after receiving;
A20, discovery information reporting administration module receive the LLID registration message;
A30, the ONU of this node is expanded the reportNum counting of finding in the message add 1, and inquire about this ONU and expand the LLID number configNum that finds the current configuration in message, if configNum=1 then changes A40; If configNum greater than reportNum, then changes A50; If configNum=reportNum then changes A60;
A40, find that the information reporting administration module is expanded this ONU and find that information reporting gives OLT, report completion after, this node of deletion from node pool, OLT receive this ONU expand find message after, this ONU is configured to the multilink management, and this ONU that resets;
The LLID registration message that A50, continuation receive other changes A20;
A60, find that the information reporting administration module is expanded this ONU and find that information reporting gives OLT, report completion after, this node of deletion from node pool.
In said method, on ONU, give the correct time, be search key traversal node pool with the MAC of this ONU, if not then add a node.
The present invention finds that with traditional ONU extension of message is that ONU expands discovery message; Said 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, and on ONU, gives the correct time, receive a LLID registration message after; Earlier its ONU that is buffered in this ONU is expanded and find in the message; Make configNum add 1 simultaneously, when configNum equals reportNum, report OLT again; Make the discovery information reporting of multilink ONU and single-link ONU have the identical mode that reports; And the link discovery of the multilink ONU of different ONU also has the identical order that reports, and makes things convenient for the ONU authenticated configuration software processing module can unified management, and concrete advantage is following:
(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 when the ONU that receives the base link find message, start the authentication processing flow process and get final product.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 of multilink ONU, configuration information can not go out active, incomplete phenomenon: after ONU authenticated configuration software module is received the discovery message of base link; Start the authentication processing flow process of ONU, authentication through after issue authorization command and configuration information.At this moment, because all links of the ONU of multilink have been collected completion, all can successfully find relevant link to accomplish the processing of expectation.
(3) reduced the coupling of ONU authenticated configuration software processing module; Be convenient to transplant: the situation that the relation of interdepending is particularly arranged 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 the dependence management of link configuration to various concrete ONU types.Like this, ONU authenticated configuration software processing module needn't be limited by the constraint that ONU goes up line morphology and ONU type fully, and flow processing independence and module are easy to transplant.
Description of drawings
Fig. 1 is the systems soft ware framework of multi-groove EPON system;
Fig. 2 is the structure chart that tradition finds to find among message and the present invention message;
Fig. 3 is a flow chart of the present invention.
Embodiment
In the existing P ON system; Usually has the ONU that a plurality of different manufacturers are produced; The ONU that has is that single-link is managed (hereinafter to be referred as single-link ONU), and the ONU that has adopts multilink MP (Multilink Protocol) agreement to manage (hereinafter to be referred as multilink ONU).For multilink ONU; Usually be at random when reporting multilink ONU; Might only report LLID (the logical link identification of base link; The logical links mark) the back timeslice has just been used up, so the LLID of other links just can report up to next timeslice, will bring the difficulty in the processing to the ONU authenticated configuration processing module of system like this.
Main purpose of the present invention is to provide the method for a kind of EPON system compatible multilink and single-link ONU mandate; ONU is found that the message expansion is that ONU expands discovery message; Multilink ONU discovery message and single-link ONU discovery message are unified, and expanded discovery message differentiation multilink ONU and single-link ONU through ONU.Added discovery information reporting administration module in the Drive Layer of EPON system in addition; Find that message shows that it is that single-link ONU finds message if find the ONU expansion that the information reporting administration module is received; Then this ONU is configured to multilink ONU; Otherwise, again ONU is expanded discovery message after the LLID that treats all links reports and report, thereby with less cost to OLT at first with the LLID that receives buffer memory in finding the information reporting administration module; Various forms have been shielded when ONU reaches the standard grade to the restriction and the requirement of ONU authenticated configuration processing module; The authentication of ONU, mandate, configuration 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 can be accomplished quickly and easily.Below in conjunction with accompanying drawing the present invention is made detailed explanation.
The method that EPON system compatible multilink provided by the invention and single-link ONU authorize; With 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, and is as shown in Figure 2.Wherein, LLID number configNum can be configured according to user's needs, but generally be no more than 8, and the ONU concrete steps of handling of reaching the standard grade are as shown in Figure 3:
The main control module of A10, OLT is set up a node for each ONU that reaches the standard grade; All nodes form node pool; Be provided with one on each node and find the information reporting administration module; Find that whether the continuous inspection of information reporting administration module receives the LLID registration message of certain ONU, then puts into node pool with this node after receiving.
When finding that the information reporting administration module is received the LLID registration message of an ONU; At first the MAC with this ONU is a search key traversal node pool; If the node that does not match in the node pool then in node pool, add a node; And copy this LLID registration message in the buffer memory of finding the information reporting administration module to, otherwise (having found this node) directly copies this LLID registration message in the buffer memory of finding the information reporting administration module to;
A20, discovery information reporting administration module receive the LLID registration message, and join in the ONU expansion discovery message;
A30, the ONU of this node is expanded the reportNum counting of finding in the 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 then shows current configuration is single-link ONU, changes A40 and changes this ONU into the multilink schema management; Otherwise the ONU that current configuration is described is multilink ONU, and the LLID number configNum of relatively more current configuration and the LLID number reportNum that reported again are if configNum greater than reportNum, then changes A50; If configNum=reportNum then changes A60;
A40, discovery information reporting administration module are expanded this ONU and are found the authenticated configuration software processing module of information reporting to OLT; After reporting completion; This node of deletion from node pool; The authenticated configuration software processing module of OLT is configured to the multilink management with this ONU after receiving that this ONU expands discovery message, and this ONU that resets.ONU changes multilink into by single-link and need reset and just can come into force;
The LLID registration message that A50, continuation receive other changes A20;
A60, find that the information reporting administration module is expanded this ONU and find that information reporting gives OLT, report completion after, this node of deletion from node pool is because current ONU has been the multilink pattern, so the ONU that at this moment need not reset.
When ONU rolls off the production line, be search key traversal node pool with the MAC of this ONU, find corresponding node and deletion.
In the said method, that no matter send discovery information is multilink ONU or single-link ONU, and after the LLID that comes up, the reportNum counting all adds 1, can learn the LLID number that has disposed through configNum.
LLID (Logical Link Identifier; The logical links mark) is a kind of Digital ID that the EPON system assignment is given logical connection; In the EPON system; LLID is distributed through OLT by webmaster, and OLT can distinguish frame by which ONU is sent through LLID, perhaps through the LLID that revises in the frame frame is forwarded to corresponding ONU place.So, set up the path of OLT to ONU, ONU to OLT, accomplish between OLT and the ONU and ONU and ONU between communicate by letter.The number of the LLID of each ONU can be through being provided with, to support one or more formation transmitting-receiving user's data.
Among 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 that reports all is unified.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of under enlightenment of the present invention, making, and every have identical or close technical scheme with the present invention, all falls within protection scope of the present invention.
Claims (5)
1.EPON the method that system compatible multilink and single-link ONU authorize is characterized in that:
Traditional ONU is found that it is ONU expansion discovery message that message is expanded, and the LLID number reportNum that message comprises the LLID number configNum of a plurality of LLID registration messages and current configuration and reported is found in said ONU expansion;
When ONU reaches the standard grade, receive a LLID registration message after, its ONU that is buffered in this ONU is expanded find to make configNum add 1 simultaneously in the message earlier, when configNum equals reportNum, report OLT again.
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 said 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 said 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, the ONU concrete steps of handling of reaching the standard grade are following:
A10,, each ONU that reaches the standard grade forms node pool for setting up node; And on each node, be provided with and find the information reporting administration module; Find that whether the continuous inspection of information reporting administration module receives the LLID registration message of certain ONU, then puts into node pool with this node after receiving;
A20, discovery information reporting administration module receive the LLID registration message;
A30, the ONU of this node is expanded the reportNum counting of finding in the message add 1, and inquire about this ONU and expand the LLID number configNum that finds the current configuration in message, if configNum=1 then changes A40; If configNum greater than reportNum, then changes A50; If configNum=reportNum then changes A60;
A40, find that the information reporting administration module is expanded this ONU and find that information reporting gives OLT, report completion after, this node of deletion from node pool, OLT receive this ONU expand find message after, this ONU is configured to the multilink management, and this ONU that resets;
The LLID registration message that A50, continuation receive other changes A20;
A60, find that the information reporting administration module is expanded this ONU and find that information reporting gives OLT, report completion after, this node of deletion from node pool.
5. the method that EPON system compatible multilink as claimed in claim 4 and single-link ONU authorize is characterized in that,
On ONU, giving the correct time, is search key traversal node pool with the MAC of this ONU, if not then add a node.
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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. |