CN105282268A - Management method and system for passive optical network media access control (PON MAC) address information for optical line terminal (OLT) equipment - Google Patents

Management method and system for passive optical network media access control (PON MAC) address information for optical line terminal (OLT) equipment Download PDF

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Publication number
CN105282268A
CN105282268A CN201510689727.XA CN201510689727A CN105282268A CN 105282268 A CN105282268 A CN 105282268A CN 201510689727 A CN201510689727 A CN 201510689727A CN 105282268 A CN105282268 A CN 105282268A
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mac
database
management method
query
address information
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CN105282268B (en
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韩永华
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Huzhou YingLie Intellectual Property Operation Co.,Ltd.
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Shanghai Feixun Data Communication Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00Indexing scheme associated with group H04L61/00
    • H04L2101/60Types of network addresses
    • H04L2101/618Details of network addresses
    • H04L2101/622Layer-2 addresses, e.g. medium access control [MAC] addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/45Network directories; Name-to-address mapping
    • H04L61/4552Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/50Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

The invention provides a management method and system for passive optical network media access control (PON MAC) address information for optical line terminal (OLT) equipment. The management method comprises following steps that an MAC drive process updates an MAC address and sends a notification message to an MAC learn process; the MAC learn process receives the notification message and inserts the updated MAC address into a first database; when receiving a query order, an MAC query process sends an acquisition request to the MAC learn process; the MAC learn process copies file information in the first database to a second database, and sends response information to the MAC query process; and the MAC query process inquires the second database and outputs a query result. Compared with the prior art, the method uses an embedded database to manage learn of the PON MAC address, the processes are carried out directly through access of the database files, so that a lot of data interaction between processes is not needed, synchronization time of the processes is reduced, the system is more stable, and the interfaces can interact with each other more friendly.

Description

For management method and the system thereof of the PON mac address information of OLT device
Technical field
The present invention relates to a kind of optical line terminal (OpticalLineTerminal, OLT) equipment, particularly relate to a kind of management method and system thereof of passive optical-fiber network (PassiveOpticalNetwork, the PON) mac address information for optical line terminal equipment.
Background technology
In OLT device, based on the needs of system management, the mac address information often reported PONMAC chip learns and manages.Traditional management method realizes by various data structure, such as RBTree (RedBlackTree), jumping table (skiplist) etc.But these methods exist problems, for RBTree, RBTree is a kind of self-balancing binary search tree, is kept the balance of binary search tree when carrying out insertion and deletion action by specific operation, thus obtains higher search performance.But RBTree more complicated, although RBTree shows good performance in inserting and searching, helpless in solution process interaction.This is because the process of learning management mac address information and MAC query procedure not same process, when needing when there being a large amount of MAC Address to transmit, having to pass through between different process and repeatedly just can complete alternately.For jumbo OLT device, because data volume is comparatively huge, the experience of user also can be had a strong impact on.When user performs an order, may need to wait for long time, even need the time in tens seconds more than could wait until the result oneself wanted.
Therefore, how to design a kind of solution for mac address information management, outside requirement in satisfied insertion and inquiry velocity, can also carry out the mutual of mac address information rapidly between different process, be those skilled in the relevant art's problems urgently to be resolved hurrily.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of management method and system thereof of the PONMAC address information for OLT device, for solving in prior art OLT device to the managerial problem of PONMAC address information.
For achieving the above object and other relevant objects, the invention provides a kind of management method and system thereof of the PONMAC address information for OLT device.
According to one aspect of the present invention, a kind of management method of the PONMAC address information for OLT device is provided, comprises the following steps: MAC drives process to upgrade a MAC Address, sends a notification message to mac learning process; Described mac learning process receives described notification message, and the described MAC Address upgraded is inserted the first database; When MAC query procedure receives querying command, send to described mac learning process the request of acquisition; Described mac learning process receives described acquisition request, and the fileinfo in described first database is copied to the second database, and sends response message to described MAC query procedure; And described MAC query procedure receives described response message, query manipulation is carried out to described second database, and exports Query Result.
In one embodiment of the present invention, described management method also comprises: after the described Query Result of output, described MAC query procedure deletes described second database.
In one embodiment of the present invention, the data update rate of described first database is 10000/second.
In one embodiment of the present invention, described management method also comprises: when described MAC drives process to learn a new MAC Address, described mac learning process is according to described announcement information, and the interface provided by described first database inserts a new record in establishment table.
In one embodiment of the present invention, described management method also comprises: when described MAC drives process to have one to record aging, described mac learning process is according to described announcement information, and the interface provided by described first database deletes aging record in establishment table.
In one embodiment of the present invention, described MAC query procedure carries out query manipulation according to MAC Address or port to described second database.
In one embodiment of the present invention, described mac learning process to the operation of described first database independent of the operation of described MAC query procedure to described second database.
According to another aspect of the present invention, a kind of management system of the PONMAC address information for OLT device being provided, comprising: MAC driver module, for upgrading a MAC Address, and exporting a notification message; Mac learning module, is connected with described MAC driver module, for receiving described notification message, and the described MAC Address upgraded is inserted the first database; And MAC enquiry module, for when receiving querying command, send to described mac learning module the request of acquisition,
Wherein, described mac learning module receives described acquisition request, fileinfo in described first database is copied to the second database and sends response message to described MAC enquiry module, described MAC enquiry module receives described response message, and described second database is carried out to query manipulation and exports Query Result.
In one embodiment of the present invention, after the described Query Result of output, described MAC enquiry module deletes described second database.
In one embodiment of the present invention, the data update rate of described first database is 10000/second.
In one embodiment of the present invention, described MAC enquiry module carries out query manipulation according to MAC Address or port to described second database.
In one embodiment of the present invention, described mac learning module to the operation of described first database independent of the operation of described MAC enquiry module to described second database.
As mentioned above, the management method of the PONMAC address information for OLT device of the present invention and system thereof, have following beneficial effect:
The study of PONMAC address is managed with embedded database;
Utilize embedded data library file to complete mutual between process of MAC Address, simplify the query script of MAC Address;
The insertion of database and query script are simpler, more easily safeguard;
Directly undertaken by the access of database file between process, cause not needing between process, to carry out a large amount of data interactions, the lock in time between minimizing process, simplify the reciprocal process between process, make system more stable, interface alternation is more friendly.
In addition, MAC Address of the present invention stores not by tree or chained list, but is deposited by embedded database.Under normal circumstances, the speed of the insertion record of database can reach 10000 per second, and therefore update is not problem concerning database.For inquiry, this is the strong point of database, is not more problem.
Accompanying drawing explanation
Fig. 1 is shown as the schematic diagram of the management system of the PONMAC address information for OLT device of the present invention.
Fig. 2 is shown as the FB(flow block) of the management method of the PONMAC address information for OLT device of the present invention.
Element numbers explanation
100MAC driver module
102MAC study module
104MAC enquiry module
DB1 first database
DB2 second database
S101 ~ S09 step
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.It should be noted that, when not conflicting, the feature in following examples and embodiment can combine mutually.
It should be noted that, the diagram provided in following examples only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
Refer to Fig. 1, the invention provides a kind of schematic diagram of management system of the PONMAC address information for OLT device.This management system comprises MAC driver module 100, mac learning module 102 and MAC enquiry module 104.Specifically, MAC driver module 100 upgrades a MAC Address, and output notice message C.Mac learning module 102 is connected with MAC driver module 100, for receiving notice message C, and the MAC Address of renewal is inserted the first database D B1.MAC enquiry module 104 and mac learning module 102 carry out two-way interactive.MAC enquiry module 104, when receiving querying command, sends to mac learning module 102 and obtains request B.Fileinfo in first database D B1, after reception obtains request B, is copied to the second database D B2, and sends response message A to MAC enquiry module 104 by mac learning module 102.MAC enquiry module 104 receives response message A, carries out query manipulation and export Query Result to the second database D B2.Here, query manipulation both can be inquired about based on MAC Address, also can inquire about according to port.In addition, MAC enquiry module 104, after output Query Result, also can delete the second database D B2.
At a specific embodiment, the first database D B1 can be set to the form of data mapping tables.Such as, the source code of establishment table is schematically expressed as:
CREATETABLEpon_mac_learn(
macLONGINTEGERKEYDEFAULT”NOTNULL,
oltifINTEGERDEFAULT”NOTNULL,
onuifINTEGERDEFAULT”NOTNULL
);
CREATEINDEXpmac_idx_1ONpon_mac_learn(mac);
CREATEINDEXpmac_idx_2ONpon_mac_learn(oltif,onuif);
Wherein, mac describes the MAC Address of OLT device; Oltif/onuif describes device number, shows that this MAC Address learns on this device.This table has two indexes, and mainly for meeting two demands, one to search this MAC Address based on MAC Address be learn to arrive on which port, to confirm the physical location of certain MAC Address.Two is search study on that port by port to have arrived which MAC Address.
At a specific embodiment, MAC driver module 100 can comprise the operation of inserting new record and the operation of deleting aging record for the renewal of MAC Address.Such as, when MAC driver module 100 learns a new MAC Address, can be sent a notification message C (being now equivalent to insert message), mac learning module 102 is according to the notification message C from MAC driver module 100, and the interface provided by the first database D B1 inserts a new record in above-mentioned establishment table pon_mac_learn.And for example, when MAC driver module 100 has one to record aging, also can send a notification message C (being now equivalent to aging information), mac learning module 102 is according to notification message, and the interface provided by the first database D B1 deletes aging record in above-mentioned establishment table pon_mac_learn.
Further, also can find out from the management system of Fig. 1, system comprises two different processes (process), that is, query procedure and study courses.Mac learning module 102 to the operation of the first database D B1 independent of the operation of MAC enquiry module 104 to the second database D B2.When after user input query order, MAC enquiry module 104 sends and obtains request B to mac learning module 102, content in first database (or being called MAC data storehouse) DB1 is saved in the second database (or being called new database) DB2 after receiving and obtaining request B by mac learning module 102.Subsequently, mac learning module 102 exports response message A, after MAC enquiry module 104 receives response message A, namely carries out query manipulation to the second database D B2.Because query procedure and study course operate different database files, avoid two processes and access the slow problem of database access that same database file causes.And because the file magnitude of this second database itself is less than 100K, database file is present in again in the middle of internal memory, and only this whole operating process is consuming time very little, can meet the search request of user.After poll-final, MAC enquiry module 104 just can delete the second database.
Refer to Fig. 2, the invention provides a kind of FB(flow block) of management method of the PONMAC address information for OLT device.Composition graphs 2 and Fig. 1, in this management method, first perform step S101, MAC and drive process (that is, MAC driver module 100) to upgrade a MAC Address, to send a notification message C to mac learning process.Then in step s 103, mac learning process (that is, mac learning module 102) receiving notice message C, and the MAC Address of renewal is inserted the first database D B1.Then perform step S105, when MAC query procedure (that is, MAC enquiry module 104) receives querying command, send to mac learning process and obtain request B.Then in step s 107, mac learning process receives and obtains request B, the fileinfo in the first database D B1 is copied to the second database D B2, and sends response message A to MAC query procedure.Finally perform step S109, MAC query procedure and receive response message A, query manipulation is carried out to the second database D B2, and exports Query Result.
At a specific embodiment, the data update rate of the first database D B1 is 10000/second.In addition, mac learning process to the operation of the first database D B1 independent of the operation of MAC query procedure to the second database D B2.
In sum, the management method of the PONMAC address information for OLT device of the present invention and system thereof use embedded database to manage the study of PONMAC address, and utilize embedded data library file to complete mutual between process of MAC Address, simplify the query script of MAC Address.In addition, insertion and the query script of database are simpler, more easily safeguard, directly undertaken by the access of database file between process, cause not needing between process, to carry out a large amount of data interactions, the lock in time between minimizing process, simplify the reciprocal process between process, make system more stable, interface alternation is more friendly.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.

Claims (10)

1. for a management method for the PONMAC address information of OLT device, it is characterized in that, described management method comprises the following steps:
MAC drives process to upgrade a MAC Address, sends a notification message to mac learning process;
Described mac learning process receives described notification message, and the described MAC Address upgraded is inserted the first database;
When MAC query procedure receives querying command, send to described mac learning process the request of acquisition;
Described mac learning process receives described acquisition request, and the fileinfo in described first database is copied to the second database, and sends response message to described MAC query procedure; And
Described MAC query procedure receives described response message, carries out query manipulation, and export Query Result to described second database.
2. the management method of the PONMAC address information for OLT device according to claim 1, it is characterized in that, described management method also comprises: after the described Query Result of output, described MAC query procedure deletes described second database.
3. the management method of the PONMAC address information for OLT device according to claim 1, it is characterized in that, described management method also comprises: when described MAC drives process to learn a new MAC Address, described mac learning process is according to described announcement information, and the interface provided by described first database inserts a new record in establishment table.
4. the management method of the PONMAC address information for OLT device according to claim 1, it is characterized in that, described management method also comprises: when described MAC drives process to have one to record aging, described mac learning process is according to described announcement information, and the interface provided by described first database deletes aging record in establishment table.
5. the management method of the PONMAC address information for OLT device according to claim 1, is characterized in that, described MAC query procedure carries out query manipulation according to MAC Address or port to described second database.
6. the management method of the PONMAC address information for OLT device according to claim 1, is characterized in that, described mac learning process to the operation of described first database independent of the operation of described MAC query procedure to described second database.
7. for a management system for the PONMAC address information of OLT device, it is characterized in that, described management system comprises:
MAC driver module, for upgrading a MAC Address, and exports a notification message;
Mac learning module, is connected with described MAC driver module, for receiving described notification message, and the described MAC Address upgraded is inserted the first database; And
MAC enquiry module, for when receiving querying command, sends to described mac learning module the request of acquisition,
Wherein, described mac learning module receives described acquisition request, fileinfo in described first database is copied to the second database and sends response message to described MAC enquiry module, described MAC enquiry module receives described response message, and described second database is carried out to query manipulation and exports Query Result.
8. the management system of the PONMAC address information for OLT device according to claim 7, is characterized in that, after the described Query Result of output, described MAC enquiry module deletes described second database.
9. the management system of the PONMAC address information for OLT device according to claim 7, is characterized in that, described MAC enquiry module carries out query manipulation according to MAC Address or port to described second database.
10. the management system of the PONMAC address information for OLT device according to claim 7, is characterized in that, described mac learning module to the operation of described first database independent of the operation of described MAC enquiry module to described second database.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040109450A1 (en) * 2002-11-27 2004-06-10 Kang Ho Yong Communication apparatus in ethernet passive optical network
CN1521662A (en) * 2003-01-30 2004-08-18 烽火通信科技股份有限公司 Method and apparatus for realizing Ethernet passive optical network system dynamic filtration data base
US20080198857A1 (en) * 2005-09-05 2008-08-21 Chan Kim EPON bridge apparatus and method for forwarding thereof
CN102355610A (en) * 2011-10-28 2012-02-15 烽火通信科技股份有限公司 Method for implementing circuit identification in optical network unit (ONU) system based on EOC (Ethernet over Coaxial cable)
CN103546595A (en) * 2013-10-31 2014-01-29 烽火通信科技股份有限公司 Mainframe route maintaining method based on xPON
CN104994181A (en) * 2015-06-05 2015-10-21 上海斐讯数据通信技术有限公司 Method for displaying dynamic MAC address table in distributed OLT system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040109450A1 (en) * 2002-11-27 2004-06-10 Kang Ho Yong Communication apparatus in ethernet passive optical network
CN1521662A (en) * 2003-01-30 2004-08-18 烽火通信科技股份有限公司 Method and apparatus for realizing Ethernet passive optical network system dynamic filtration data base
US20080198857A1 (en) * 2005-09-05 2008-08-21 Chan Kim EPON bridge apparatus and method for forwarding thereof
CN102355610A (en) * 2011-10-28 2012-02-15 烽火通信科技股份有限公司 Method for implementing circuit identification in optical network unit (ONU) system based on EOC (Ethernet over Coaxial cable)
CN103546595A (en) * 2013-10-31 2014-01-29 烽火通信科技股份有限公司 Mainframe route maintaining method based on xPON
CN104994181A (en) * 2015-06-05 2015-10-21 上海斐讯数据通信技术有限公司 Method for displaying dynamic MAC address table in distributed OLT system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王文桢: "《基于Berkeley DB数据库的配用电EPON网管系统设计与实现》", 《中国优秀硕士学位论文全文数据库(电子期刊)工程科技II辑》 *

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