CN107994942B - Method for discovering topology of service resource tree of optical broadband access network - Google Patents
Method for discovering topology of service resource tree of optical broadband access network Download PDFInfo
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- CN107994942B CN107994942B CN201711259670.5A CN201711259670A CN107994942B CN 107994942 B CN107994942 B CN 107994942B CN 201711259670 A CN201711259670 A CN 201711259670A CN 107994942 B CN107994942 B CN 107994942B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0793—Network aspects, e.g. central monitoring of transmission parameters
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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
- H04Q11/0005—Switch and router aspects
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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
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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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
- H04Q2011/0073—Provisions for forwarding or routing, e.g. lookup tables
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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
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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
- H04Q2011/009—Topology aspects
Abstract
The invention discloses an optical broadband access network service resource tree topology discovery algorithm, belongs to the technical field of optical broadband access networks, and relates to an algorithm implementation of network topology discovery based on an MAC address forwarding principle, a network link splicing method of optical network equipment (OLT) and Optical Network Units (ONU), and association matching of customer services and network topology. The algorithm comprises four steps of basic data acquisition, network physical link splicing, service and link splicing and service resource tree topology formation. The topology discovery algorithm for the service resource tree of the optical broadband access network has the advantages of good real-time performance, low maintenance cost and high accuracy, and can accurately discover and locate the optical broadband network fault in real time.
Description
The technical field is as follows:
the invention relates to the technical field of optical broadband access networks, in particular to a topology discovery method of an optical broadband access network service resource tree, which has good real-time performance, low maintenance cost and high accuracy and can accurately discover and locate optical broadband network faults in real time.
Background art:
with the development of optical broadband network technology, the size of the network is larger and the structure is more and more complex, but many network management tools only provide topology discovery at the network layer. The main element of the network layer is the router, and the router has learning capability and can timely master the routing distribution information in the whole network, so that the function of automatically selecting the route in the network is realized, and the topological structure can be obtained by acquiring and analyzing the routing table. Link layer topology discovery is much more difficult than network layer topology discovery, particularly link topology discovery involving optical network devices. In the current network operation environment, operators basically use a network resource management system or a CRM system to manage broadband services, switches, OLT devices, ONU devices, and network topology relationships thereof in a manual entry manner. The relation among users, services and equipment of the optical broadband is maintained in a manual input mode, the real-time performance is poor, the maintenance cost is high, the accuracy is difficult to guarantee, and the faults of the optical broadband network are difficult to find and position accurately and in real time.
The invention content is as follows:
the technical problem to be solved by the invention is to provide a method for discovering the topology of the service resource tree of the optical broadband access network, which has the advantages of good real-time performance, low maintenance cost and high accuracy and can accurately discover and locate the faults of the optical broadband network in real time.
The technical solution of the present invention is to provide a method for discovering topology of service resource tree of optical broadband access network, which comprises the following steps:
step 1, acquiring basic data;
step 2, splicing network physical links;
step 3, splicing the service and the link;
and 4, forming a service resource tree topology.
Preferably, the method for discovering the topology of the service resource tree of the optical broadband access network according to the present invention, wherein the step 1 includes the following steps:
step 1.1, all switches in a link layer network are collected through a TELNET protocol, and information comprises MAC addresses and port numbers;
step 1.2, the MAC address forwarding tables of all the switch ports and the information of the port configuration VLAN are collected through a TELNET protocol.
And step 1.3, acquiring the MAC addresses, port numbers and QinQ VLAN information of the OLT and the ONU equipment of the PON network and the connection relation between the OLT and the ONU through the SNMP.
Preferably, the method for discovering the topology of the service resource tree of the optical broadband access network according to the present invention, wherein the step 2 includes the following specific steps:
step 2.1, with the terminal ONU as a starting point, establishing the connection relationship between the ONU and the OLT by using the information acquired in the step 1;
step 2.2, the OLT MAC searched in the step 1 is taken as the starting equipment, the MAC address of the uplink port of the OLT is searched in the MAC address forwarding table of the link layer equipment, and the equipment corresponding to the searched port is taken as the uplink equipment to be confirmed of the OLT;
step 2.3, in the uplink equipment to be confirmed by the OLT, in the MAC address forwarding pool of the same port of the uplink equipment to be confirmed, if other uplink equipment to be confirmed by the OLT exists, the uplink equipment is not the real uplink of the OLT equipment, and after the non-real uplink equipment is removed, if the number of the remaining uplink equipment to be confirmed is 1, the uplink equipment is used as the uplink switch for the real uplink confirmation of the OLT equipment, otherwise, the uplink equipment to be confirmed is totally marked as the uplink switch to be confirmed;
step 2.4, traversing the confirmed uplink port MAC address of the uplink switch, retrieving the uplink port MAC address in a link layer equipment MAC address forwarding table, and taking the equipment corresponding to the retrieved port as the uplink equipment to be confirmed of the equipment;
and 2.5, in the MAC address forwarding pool of the to-be-confirmed uplink switch on the same port of the to-be-confirmed uplink switch, if other to-be-confirmed uplink devices of other switches exist, the to-be-confirmed uplink switch is not the real uplink of the confirmed uplink switch. After the non-real uplink devices are removed, if the number of the remaining uplink devices to be confirmed is 1, the remaining uplink devices are taken as the confirmed uplink exchanger real uplink exchanger, and otherwise, the remaining uplink devices are all recorded as the uplink devices to be confirmed;
step 2.6, repeatedly executing the step 2.4 to the step 2.4, and finishing the search logic when the number of the devices to be confirmed to be connected is 0;
step 2.7, there may be multiple physical links found from the ONU, and all the physical links are stored as optical broadband access network physical link data.
Preferably, step 3 specifically refers to matching the device information and QinQ VLAN information carried in the specific service with the spliced device information and QinQ VLAN information in the physical link, and forming a complete service link if the matching is successful. .
Preferably, step 4 of the method for discovering the service resource tree topology of the optical broadband access network of the present invention specifically means that the same device in each service link is deduplicated to form the service resource tree topology.
The invention has the beneficial effects that: on the basis of the MAC address forwarding principle, the invention combines the PON network equipment connection and the division method of the optical broadband access network service, can quickly and accurately discover the optical broadband access network topology structure, and forms the complete service resource tree topology. The service resource tree topology formed by automatic acquisition, calculation and processing can effectively reduce the cost of maintenance and management of the optical broadband access network topology, improve the accuracy of the optical broadband access network topology management, and provide efficient support for network management requirements such as network monitoring, fault location and performance management.
Description of the drawings:
fig. 1 is a schematic flow chart of a method for discovering an optical broadband access network service resource tree topology according to the present invention.
The specific embodiment is as follows:
the following describes a method for discovering an optical broadband access network service resource tree topology according to the present invention in detail with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1, the method for discovering the topology of the service resource tree of the optical broadband access network of the present invention includes the following steps:
step 1, acquiring basic data;
1.1, acquiring all switches in a link layer network by a TELNET protocol, wherein the information comprises an MAC address and a port number;
1.2, collecting MAC address forwarding tables of all switch ports and information of port configuration VLAN through TELNET protocol.
1.3, the MAC addresses, the port numbers and the QinQ VLAN information of the OLT and the ONU equipment of the PON network and the connection relation between the OLT and the ONU are collected through the SNMP.
Step 2, splicing network physical links;
2.1, with the terminal ONU as a starting point, establishing the connection relationship between the ONU and the OLT by using the information acquired in the step 1;
2.2, with the OLT MAC searched in the step 1 as an initial device, searching the MAC address of the uplink port in a link layer device MAC address forwarding table, and using the device corresponding to the searched port as the uplink device to be confirmed of the OLT;
2.3 in the uplink device to be confirmed by the OLT, in the MAC address forwarding pool of the same port of the uplink device to be confirmed, if other uplink devices to be confirmed by the OLT exist, the uplink device is not the real uplink of the OLT device, and after the non-real uplink devices are removed, if the number of the remaining uplink devices to be confirmed is 1, the uplink device is used as the uplink switch for the real uplink confirmation of the OLT device, otherwise, the uplink devices to be confirmed are all recorded as the uplink switch to be confirmed;
2.4 traversing the confirmed uplink port MAC address of the uplink switch, searching the uplink port MAC address in the link layer equipment MAC address forwarding table, and using the equipment corresponding to the searched port as the uplink equipment to be confirmed of the equipment;
2.5 in the MAC address forwarding pool of the to-be-confirmed uplink switch on the same port, if there are other to-be-confirmed uplink devices of other switches, the to-be-confirmed uplink switch is not a real uplink of the confirmed uplink switch. After the non-real uplink devices are removed, if the number of the remaining uplink devices to be confirmed is 1, the remaining uplink devices are taken as the confirmed uplink exchanger real uplink exchanger, and otherwise, the remaining uplink devices are all recorded as the uplink devices to be confirmed;
2.6, repeatedly executing the step 2.4 to the step 2.4, and finishing the search logic when the number of the devices to be confirmed to be connected is 0;
2.7 there may be multiple physical links found from the ONU, and all the physical links are stored as optical broadband access network physical link data.
Step 3, splicing the service and the link;
and matching the equipment information (including BRAS, SR, OLT, ONU and the like) and QinQ VLAN information carried in the specific service with the equipment information and the QinQ VLAN information in the spliced physical link, and forming a complete service link if the equipment information and the QinQ VLAN information are successfully matched.
Step 4, forming a service resource tree topology:
and removing the duplication of the same equipment in each service link to form a service resource tree topology.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, which is defined by the claims.
Claims (1)
1. A method for discovering the topology of the service resource tree of the optical broadband access network is characterized in that: the discovery method comprises the following steps:
step 1, acquiring basic data;
step 2, splicing network physical links;
step 3, splicing the service and the link;
step 4, forming a service resource tree topology;
the step 1 comprises the following specific steps:
step 1.1, all switches in a link layer network are collected through a TELNET protocol, and information comprises MAC addresses and port numbers;
step 1.2, acquiring MAC address forwarding tables of all switch ports and information of port configuration VLAN through a TELNET protocol;
step 1.3, collecting the MAC addresses, port numbers and QinQ VLAN information of PON equipment OLT and ONU and the connection relation between the OLT and the ONU through SNMP;
the step 2 comprises the following specific steps:
step 2.1, with the terminal ONU as a starting point, establishing the connection relationship between the ONU and the OLT by using the information acquired in the step 1;
step 2.2, the OLT MAC searched in the step 1 is taken as the starting equipment, the MAC address of the uplink port of the OLT is searched in the MAC address forwarding table of the link layer equipment, and the equipment corresponding to the searched port is taken as the uplink equipment to be confirmed of the OLT;
step 2.3, in the uplink equipment to be confirmed by the OLT, in the MAC address forwarding pool of the same port of the uplink equipment to be confirmed, if other uplink equipment to be confirmed by the OLT exists, the uplink equipment is not the real uplink of the OLT equipment, and after the non-real uplink equipment is removed, if the number of the remaining uplink equipment to be confirmed is 1, the uplink equipment is used as the uplink switch for the real uplink confirmation of the OLT equipment, otherwise, the uplink equipment to be confirmed is totally marked as the uplink switch to be confirmed;
step 2.4, traversing the confirmed uplink port MAC address of the uplink switch, retrieving the uplink port MAC address in a link layer equipment MAC address forwarding table, and taking the equipment corresponding to the retrieved port as the uplink equipment to be confirmed of the equipment;
step 2.5, in the MAC address forwarding pool of the same port of the upper-link switch to be confirmed, if other upper-link devices to be confirmed of other switches exist, the upper-link switch to be confirmed is not the real upper link of the confirmed upper-link switch, after the non-real upper-link devices are removed, if the number of the left upper-link devices to be confirmed is 1, the upper-link devices to be confirmed are used as the confirmed upper-link switch, and otherwise, the upper-link devices to be confirmed are all recorded as the upper-link devices to be confirmed;
step 2.6, repeatedly executing the step 2.4 to the step 2.4, and finishing the search logic when the number of the devices to be confirmed to be connected is 0;
step 2.7, a plurality of physical links may exist, which are discovered by taking the ONU as a starting point, and all the physical links are stored as the data of the optical broadband access network physical link;
step 3 specifically means that the equipment information and the QinQ VLAN information carried in specific services are used for matching with the equipment information and the QinQ VLAN information in the spliced physical link, and a complete service link is formed if the equipment information and the QinQ VLAN information are successfully matched;
step 4 specifically means that the same device in each service link is deduplicated to form a service resource tree topology.
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| CN110121124B (en) * | 2019-05-10 | 2021-11-19 | 江西山水光电科技股份有限公司 | PON aggregation remote DCN ring prevention method |
| CN112203164B (en) * | 2019-07-08 | 2023-04-28 | 中国移动通信集团贵州有限公司 | Data processing method and device and electronic equipment |
| CN110856051B (en) * | 2019-11-04 | 2021-10-08 | 中盈优创资讯科技有限公司 | Method and device for checking optical wide resource tree |
| CN112291162B (en) * | 2020-10-02 | 2022-12-06 | 中盈优创资讯科技有限公司 | Business dynamic resource allocation method |
| CN113726631B (en) * | 2021-07-21 | 2023-03-28 | 中盈优创资讯科技有限公司 | Static IP (Internet protocol) government-enterprise user resource business path auditing method and device |
| CN113783724A (en) * | 2021-08-27 | 2021-12-10 | 国网江苏省电力有限公司南通供电分公司 | Terminal access monitoring early warning platform |
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| CN102739539A (en) * | 2012-06-29 | 2012-10-17 | 广东东研网络科技有限公司 | Method for carrying out topology association on optical network unit (ONU) and Ethernet over coax (EOC) |
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| KR20150145128A (en) * | 2014-06-18 | 2015-12-29 | 한국전자통신연구원 | Frame conversion-based Mid-span extender for the acceptance of G-PON service in XG-PON link and Method thereof |
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| CN101610178A (en) * | 2009-07-20 | 2009-12-23 | 南京联创科技股份有限公司 | Method for obtaining physical layer link network topology based on address forwarding mechanism |
| CN102739539A (en) * | 2012-06-29 | 2012-10-17 | 广东东研网络科技有限公司 | Method for carrying out topology association on optical network unit (ONU) and Ethernet over coax (EOC) |
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Application publication date: 20180504 Assignee: Kedaduochuang cloud Technology Co.,Ltd. Assignor: USTC SINOVATE SOFTWARE CO.,LTD. Contract record no.: X2023980034512 Denomination of invention: A Topology Discovery Method for Service Resource Tree in Optical Broadband Access Networks Granted publication date: 20200414 License type: Common License Record date: 20230407 |
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