CN107911764B - Method for accelerating business management of intensive EPON ONU - Google Patents
Method for accelerating business management of intensive EPON ONU Download PDFInfo
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- CN107911764B CN107911764B CN201711484666.9A CN201711484666A CN107911764B CN 107911764 B CN107911764 B CN 107911764B CN 201711484666 A CN201711484666 A CN 201711484666A CN 107911764 B CN107911764 B CN 107911764B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0889—Techniques to speed-up the configuration process
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
Abstract
A method for accelerating business management of intensive EPON ONU comprises the following steps: s1, organizing ONU management and service related configuration according to a requirement format to form different configuration files, and importing the configuration files into an EPON OLT system; s2, in the on-line registration process of the ONU, the OLT notifies the ONU of the required configuration file feature words through the expanded private OAM message according to the ONU type or the service model; s3, after receiving the configuration file character of the request, the ONU compares the received configuration file character with the local configuration file character and determines whether to update the configuration file according to the result; s4, if the characteristic words of the configuration files are different, acquiring a new configuration file from the EPON OLT, updating local configuration and storing the new characteristic words of the configuration file through a data protocol layer protocol file transmission method; and S5, if the feature words of the configuration files are the same, informing the OLT of finishing quick start and recovering service through the expanded private OAM message. The invention improves the service management efficiency of the intensive FTTH system and reduces the complexity of operation and maintenance.
Description
Technical Field
The invention relates to the field of ONU (optical network unit) service management of an EPON (Ethernet passive optical network) system of a communication network access network, in particular to a method for accelerating the service management of a dense EPON ONU (Ethernet passive optical network), which is particularly suitable for the service management category related to a large number of ONUs in a high-density EPON OLT (optical line terminal) model.
Background
With the continuous development of communication technology and the exponential expansion of communication scale, in addition, the demand of high-bandwidth services represented by video on demand, network games and IPVT has increased continuously in the present year, and the fiber technology represented by FTTH, which has high bandwidth, low delay and stable transmission, has been widely developed, which also brings the continuous increase of the demand of the intensive EPON system, and brings higher requirements on the maintenance and operation of the system, at present, a single service card can support 16 × 64/32 × 64ONU data, a complete machine supports 12 × 16 × 64/16 × 64 high-density intensive EPON devices, and the degree of concentration is higher in the fields of WPON and the like.
However, the OAM slow protocol defined by IEEE EPON, which is still used by most manufacturers at present when performing ONU service management, has a disadvantage in the service configuration rate when facing large-scale intensive FTTH management with a high branch ratio, and is to be improved. This disadvantage is particularly pronounced when large-scale ONU re-registration or re-service configuration upgrades occur.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for accelerating the business management of the intensive EPON ONU aiming at the defects of the existing ONU business management, improve the business management efficiency of the intensive FTTH system and reduce the complexity of operation and maintenance.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for accelerating business management of intensive EPON ONU comprises the following steps:
s1, organizing ONU management and service related configuration according to the equipment type or service requirement format to form different configuration files, and importing the configuration files into an EPON OLT system, wherein the different configuration files obtain mutually different and unique configuration file feature words through a HASH algorithm;
s2, in the on-line registration process of the ONU, the OLT notifies the ONU of the required configuration file feature words through the expanded private OAM message according to the ONU type or the service model;
s3, after receiving the configuration file feature words notified by the OLT in the step S2, the ONU compares the configuration file feature words with the locally stored configuration file feature words and judges whether the local configuration file needs to be configured and updated;
s4, if the characteristic words of the configuration files are different, the ONU starts an update plan, and acquires a new configuration file from the EPON OLT, updates local configuration and saves the new characteristic words of the configuration file through a data protocol layer protocol file transmission method;
and S5, if the feature words of the configuration files are the same, informing the OLT of finishing quick start and recovering service through the expanded private OAM message.
According to the above scheme, in step S1, the configuration file replaces IEEE802.33EPON OAM slow protocol, as a main means of ONU service management, and the configuration file obtains its unique identifier according to the HASH algorithm: a 32-bit digitized profile feature word.
According to the above scheme, in step S2, the private OAM message is specifically extended according to the general format of IEEE802.3EPON OAM, and includes a configuration request OAM, a response message OAM, a service restoration success notification event OAM, and a service restoration failure notification event OAM, which are used to exchange configuration information between EPON systems.
According to the above scheme, in step S4, the data protocol layer protocol file transmission method is specifically a point-to-point file transmission method based on the MAC address in the ISO model data link layer as an addressing address.
According to the above scheme, in step S5, whether the OAM is received from the service restoration success notification event reported by the ONU is a main method for the OLT to determine whether the service is quickly restored.
The working principle of the invention is as follows: the invention redefines ONU registration management and service management models based on an EPON system defined by IEEE802.3 ad specification, changes the traditional IEEE OAM management into a method for managing configuration files, the configuration related to ONU service is mainly carried out through the configuration files, OAM information assists in exchanging some necessary information, thereby reducing the dependence on slow protocol OAM, except that the configuration files need to be upgraded under the condition of initial configuration, the ONU can be directly started from the local configuration files under most other conditions, greatly reducing the dependence on OLT dynamic configuration and accelerating the service management efficiency of the whole EPON system.
The invention has the following beneficial effects:
1. under the background that the CPU processing capacity of the embedded system is weak, the service management efficiency of the whole EPON system is improved, and the recovery efficiency of the intensive FTTH in various application scenes is accelerated, wherein the recovery efficiency comprises the efficiencies of optical fiber plugging, optical fiber breakage recovery, system power failure recovery, configuration updating and the like;
2. according to the technical requirements of 'technical requirements for passive optical networks (EPON) based on Ethernet mode' in the national standard, a timeout and retransmission mechanism after OAM failure is specially defined, and a mechanism of waiting for response or retransmitting overtime for 3 times within 3 seconds is adopted, wherein the configuration operation OAM of one ONU has errors, and the operation configuration and recovery time of other ONUs are seriously influenced; therefore, under the condition that most of the files are deployed and operated, by the method for dynamically comparing the file characteristic words, the service configuration events of a large number of ONU can be reduced, the load pressure of intensive OLT processing a large number of OAM interactions is relieved, and the rapid service recovery capability of the EPON system is integrally improved;
3. due to the adoption of a management mode of the configuration file, the configuration can be remotely evaluated by special technicians or experts without field configuration, so that the operation efficiency of maintenance operators is improved; troubleshooting can also be performed directly on the configuration file without performing field operation on actual equipment;
4. the method of the invention also expands 4 necessary IEEE OAM exchange messages and events for the newly created service model, and completes the message exchange between the models with the minimum overhead; the point-to-point file transmission method based on the MAC address as addressing is newly created, the text can be directly transmitted between the EPON OLT and the ONU, a DHCP server or other IP/TCP layer servers do not need to be deployed for traditional IP file transmission, the purpose of automatic configuration of equipment is achieved, and the operating requirement is reduced.
Drawings
Fig. 1 is an organization structure and a hierarchy illustration of an ONU service configuration file according to the present invention;
fig. 2 is a flow chart of a method of accelerating intensive EPON ONU service management in accordance with the present invention;
FIG. 3 is a diagram illustrating a point-to-point file transfer based on MAC addresses in accordance with an embodiment of the present invention;
FIG. 4 is a code table in which characters are encoded according to ASCII according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
In the embodiment, description of the ONU service profile is first introduced. Referring to fig. 1, the ONU service configuration file must be organized according to a certain format, and the content of the file includes, but is not limited to, the following main parts:
1. the version information, the coding information, the information of the matched equipment type or the service and the characteristic words of the configuration file can also comprise manufacturer information and necessary timestamps;
2. and (3) a service configuration model: the < XXX > and </XXX > are taken as a group of configuration sets, and necessary object information and configuration information are specified in the configuration sets, including configuration objects, indexes, specified service types, specified service modes, specified service configuration data and the like. The same configuration set can be configured according to complexity or topology logic, for example, the < ResourceLocator > configuration set is the < BoardInfo > configuration subset, and nested layers can be gradually expanded;
3. the simple and easy text and grammar describe the configuration model in an ASCII coding mode, specify the coding type and the data length of data, and code and analyze the data structure which can be appointed for the complex model.
The analysis and discrimination of the configuration file are the basic requirements of the EPON OLT/ONU and are the basis for accelerating the service deployment and management.
Referring to fig. 2, a method for accelerating service management of an EPON ONU in an embodiment of the present invention includes the following steps:
s1, in the operating scene of an EPON system with common optical fiber plugging, optical fiber breaking recovery, system power failure recovery and configuration updating, when the ONU initiates re-registration, the OLT reads the basic equipment information such as the equipment type, MAC address and the like of the ONU through OAM specified in the national standard 'Ethernet mode-based passive optical network (EPON) technical requirement';
s2, on the basis of complying with the technical requirements of passive optical network (EPON) based on Ethernet in accordance with national standard of China, the OAM format of the characteristic words of the configuration files of the ONU informed by the OLT is expanded in combination with the service configuration requirements of operation planning, so that the ONU can judge whether to perform configuration updating;
s3, the OLT does not need to perform service configuration of other OAM slow protocols any more only after basically identifying the information such as the equipment type of the ONU and the like, converts the service configuration logic from the traditional one-by-one OAM configuration into the configuration file characteristic word confirmation through negotiation, and judges whether the service needs to be reconfigured or recovered quickly;
s4, when the feature word of the ONU local service configuration file is different from the feature word of the ONU configuration file notified by the OLT, the ONU is in the state to be upgraded and updated, and the situation generally occurs under the condition that the ONU is newly accessed or the operation planning service is changed; the ONU in the updating state is updated, a correct configuration file is acquired from an EPON OLT through a point-to-point file transmission method based on MAC and through matching of the feature words of the configuration file, and then the local configuration file of the ONU is automatically updated and new feature words of the configuration file are automatically saved;
and S5, when the feature word of the local service configuration file of the ONU is the same as the feature word of the configuration file of the ONU informed by the OLT, indicating that the ONU is in a quick start and service recovery state.
The method for accelerating the business management of the intensive EPON ONU comprises a point-to-point file transmission method based on the MAC address in an ISO model data link layer, and is shown in figure 3, wherein each parameter is explained as follows:
DstMacAddr: the destination MAC is used for indicating a receiving end of the message;
SrcMacAddr: the source MAC is used for indicating a sending end of the message;
OpcodeType: an operation code to request a configuration/query operation;
keyIndex: configuring a file characteristic word;
sequence: a sequence of file streams;
iRet/Length: file transfer length or return code.
Referring to fig. 4, the present invention expands the format of IEEE OAM for performing necessary configuration file feature word query and response, and service configuration event reporting message according to the common format of IEEE802.3EPON OAM. Wherein, the OUI field is used for marking the feature code of the extension field; the 4 types defined by the opcode correspond to a configuration request OAM, a response message OAM, a service recovery success notification event OAM, and a service recovery failure notification event OAM, respectively.
The invention is not limited to the use as set forth in the description and the embodiments, but various corresponding modifications and variations will be apparent to those skilled in the art in light of the present invention, all falling within the scope of the appended claims.
Claims (3)
1. A method for accelerating business management of an intensive EPON ONU is characterized by comprising the following steps:
s1, the EPON system organizes ONU management and service related configuration according to the equipment type or service requirement format to form different configuration files, and the different configuration files are imported into the EPON OLT system, and different and unique configuration file feature words are obtained by the different configuration files through a HASH algorithm;
s2, in the on-line registration process of the ONU, the OLT notifies the ONU of the required configuration file feature words through the expanded private OAM message according to the ONU type or the service model; specifically, according to a common format of IEEE802.3EPON OAM, the IEEE OAM is expanded to carry out necessary query and response of a feature word of a configuration file and a message format for reporting a service configuration event, wherein an OUI field is used for marking a feature code of the expanded field; 4 types defined by ext, respectively corresponding to configuration request OAM, response message OAM, service recovery success notification event OAM and service recovery failure notification event OAM;
s3, after receiving the configuration file feature words notified by the OLT in the step S2, the ONU compares the configuration file feature words with the locally stored configuration file feature words and judges whether the local configuration file needs to be configured and updated;
s4, if the characteristic words of the configuration files are different, the ONU starts an update plan, and acquires a new configuration file from the EPON OLT, updates local configuration and saves the new characteristic words of the configuration file through a data protocol layer protocol file transmission method; the data protocol layer protocol file transmission method is a point-to-point file transmission method based on the MAC address in the ISO model data link layer, wherein each parameter is explained as follows:
DstMacAddr: the destination MAC is used for indicating a receiving end of the message;
SrcMacAddr: the source MAC is used for indicating a sending end of the message;
OpcodeType: an operation code to request a configuration/query operation;
keyIndex: configuring a file characteristic word;
sequence: a sequence of file streams;
iRet/Length: file transfer length or return code;
and S5, if the feature words of the configuration files are the same, informing the OLT of finishing quick start and recovering service through the expanded private OAM message.
2. The method of accelerating traffic management of an intensive EPON ONU according to claim 1, wherein in step S1, instead of IEEE802.33EPON OAM slow protocol, as means for ONU traffic management, the configuration file gets its unique identifier according to the HASH algorithm: a 32-bit digitized profile feature word.
3. The method of claim 1, wherein in step S5, whether the OAM is received from the service restoration success notification event reported by the ONU is a method for the OLT to determine whether the service is quickly restored.
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| CN112822570B (en) * | 2020-12-30 | 2023-01-20 | 凌云天博光电科技股份有限公司 | PON configuration file missing recovery method and device based on network management system |
| CN115086163B (en) * | 2021-03-15 | 2024-04-09 | 中国移动通信集团福建有限公司 | PON port configuration migration method and device |
| CN113849132A (en) * | 2021-09-28 | 2021-12-28 | 广州芯德通信科技股份有限公司 | Method for prolonging flash service life of ONU (optical network Unit) terminal equipment and ONU terminal equipment |
| CN115174392B (en) * | 2022-09-07 | 2023-01-31 | 武汉长光科技有限公司 | Upgrading method of optical network unit ONU, server and storage medium |
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