CN101753266B - Network topology search and error control optimization method of coaxially-loading Ethernet equipment - Google Patents
Network topology search and error control optimization method of coaxially-loading Ethernet equipment Download PDFInfo
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- CN101753266B CN101753266B CN 200910200479 CN200910200479A CN101753266B CN 101753266 B CN101753266 B CN 101753266B CN 200910200479 CN200910200479 CN 200910200479 CN 200910200479 A CN200910200479 A CN 200910200479A CN 101753266 B CN101753266 B CN 101753266B
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Abstract
The invention discloses a network topology search and error control optimization method of coaxially-loading Ethernet equipment, which effectively improves the processing capability of an SNMP agency, and simultaneously guarantees that the SNMP agency realizes certain error control for failure MIB object nodes. The technical scheme thereof is as follows: the method adopts a host for operating the topology discovery as an initiate node, adopts a two-dimensional linked table to reconfigure nodes of a routing table of EOC equipment by making further improvement to objects which are included in an SNMPMIB library file in accord with the characteristics of the EOC equipment, and leads routing numbers corresponding to a plurality of IP addresses connected with the same EOC equipment to be managed by using one ID.
Description
Technical field
The present invention relates to Simple Network Management Protocol (the Simple Network Management Protocol of coaxial load-bearing Ethernet (being designated hereinafter simply as EOC) equipment; Be designated hereinafter simply as snmp protocol) relevant technical application, relate in particular to search the optimization method of improvement and error control mechanism based on the SNMP network topology structure of EOC equipment.
Background technology
Snmp protocol is the industrial standard that is widely accepted and comes into operation; Its target is to guarantee the transmission of management information between any 2; Be convenient to network manager's any one node retrieving information on network; Make amendment, trouble-shooting is accomplished failure diagnosis, capacity planning and report and is generated.It adopts polling mechanism, and basic functions collection is provided, and optimum environment small-sized, quick, low price uses.It only requires transport layer protocol UDP, receives the extensive support of many products, and the status of SNMP in TCP/IP protocol suite is as shown in Figure 1.
SNMP has stipulated 5 kinds of protocol Data Units (being designated hereinafter simply as PDU), and SNMP message just is used for exchange between managing process and the agency.Wherein the get-request operation is in order to extract one or more parameter values from agent process; The get-next-request operation is to extract the next parameter value immediately following the parameter current value from agent process; The set-request operation is for one or more parameter values of agent process are set.The Get-response operation is to return one or more parameter values, and this operation is sent by agent process, is the operation response of the three kinds of operations in front; The trap operation is the message that agent process initiatively sends, and the notice managing process has some thing to take place.
Three kinds of operations of front are to be sent to agent process by managing process, and two operations of back are that agent process is issued managing process.Fig. 2 has described five kinds of message operations of SNMP.Based on SNMP network topology search method is that EOC equipment is on the basis of handling work such as network event, fault location and resource management.The topology information of network generally is to obtain from the variable of management information bank (Management Information Base is designated hereinafter simply as MIB), is based on these variablees and search algorithm.According to the rule of SMI version 2, all managed entities are at tree of conceptive composition among the MIB, and tree structure begins from unnamed root.Each managed object all has unique name; With object identifier (Object Identifier; Be designated hereinafter simply as OID) as sign; Adopt the integer sequence definition of dot divided, these integers that separated by point represent respectively from root node to the object node through ID number of all nodes on the path, the process of searching mib object is exactly the process of search OID in the MIB tree.
On the optimized Algorithm basis,, SNMP MIB related object can realize error control effectively to the mib object that lost efficacy through being set up dynamic copies mechanism.At present mainly there is following problem in existed algorithms: definition of object can not adapt to and operates in coaxial load-bearing Ethernet system in the two-way cable TV network network among the SNMPMIB of (1) standard; (2) too complicated based on the network topology structure retrieval of SNMP, algorithm is more single, and retrieval rate is fast inadequately; (3) present SNMP acts on behalf of (Agent) can't guarantee whole system to failed mib object node processing mechanism error control.
Summary of the invention
The objective of the invention is to address the above problem; A kind of network topology search and error control optimization method of coaxial load-bearing ethernet device are provided; Effectively improved SNMP agency's disposal ability, guaranteed that simultaneously the SNMP agency realizes certain error control to the mib object node that had lost efficacy.
Technical scheme of the present invention is: the present invention has disclosed a kind of network topology search and error control optimization method of coaxial load-bearing ethernet device, comprising:
(1) on the coaxial load-bearing ethernet device of operation snmp agent, sets up error control to crucial management information bank object identifier MIB OID through dynamic copies;
(2) through Simple Network Management Protocol the coaxial load-bearing ethernet device on the network is done Equipment Inspection, obtain gateway address and be recorded in the data structure and preserve;
(3) conduct interviews through the management information bank MIB of the instruction in the Simple Network Management Protocol to the coaxial load-bearing ethernet device;
(4) differentiate the corresponding coaxial load-bearing ethernet device coaxial load-bearing ethernet device whether needs are searched for according to the information of the object identifier OID among the crucial management information bank MIB; If the coaxial load-bearing ethernet device that need search for then gets into step (6), otherwise get into step (5);
(5) begin to detect coaxial load-bearing ethernet device on the wire cable network that couples together through the coaxial load-bearing ethernet device,, return step (2) then so that obtain relevant crucial management information bank object identifier MIB OID information;
(6) from the object identifier OID of the management information bank MIB of coaxial load-bearing ethernet device, obtain the ip address table ipAddrTable of coaxial load-bearing ethernet device and relevant network topology structure information, write in the data structure and preserve;
(7) from the object identifier OID of the management information bank MIB of coaxial load-bearing ethernet device, obtain the ip routing table ipRouteTable of coaxial load-bearing ethernet device and relevant network topology structure information, write in the data structure and preserve;
(8) carry out remaining object identifier OID detection of information relevant of the management information bank MIB of coaxial load-bearing ethernet device, up to the management information bank object identifier MIB OID information that relates to network topology structure that detects all online coaxial load-bearing ethernet devices and preserve with the wire cable network;
The management information bank MIB data message of all coaxial load-bearing ethernet devices that (9) will collect gathers and generates the topology data storehouse of online coaxial load-bearing ethernet device.
According to the network topology search of coaxial load-bearing ethernet device of the present invention and an embodiment of error control optimization method, this ip address table ipAddrTable comprises following information: the IP address corresponding equipment physical interface sign of the IP address of network equipment entity, network equipment entity, the corresponding mask in IP address of network equipment entity.
According to the network topology search of coaxial load-bearing ethernet device of the present invention and an embodiment of error control optimization method, this ip routing table ipRouteTable comprises following information: IP address, route destination, corresponding router physical interface index, the IP address of route next jump, the type identification of route, the corresponding IP address mask of route of route.
The present invention contrasts prior art has following beneficial effect: technical scheme of the present invention is based on the Topology Discovery of the network layer of SNMP; The main routing table information that adopts the EOC system that snmp protocol moves in the collection network is extracted network topology for information about from routing table.All embody in the routing table of EOC equipment to some extent IP address at the equipment that an EOC system is connected.Search based on the network topology structure of snmp protocol that to optimize be exactly a process of optimizing the traversal structure, represent that through the mode that is used to deposit routing table information, subnet and annexation that adopts routing queue, subnet mask formation and is connected formation routing table set, gateway set and the subnet of EOC equipment gather.With the main frame of operation Topology Discovery as initiating node; Further improvement through object that the SNMP MIB library file that meets the EOC equipment characteristic is comprised; Adopt the two-dimensional concatenation table that the routing table node of EOC equipment is planned again, make the corresponding route numbering in a plurality of IP address that connects same EOC equipment manage with an ID.The contrast prior art, the present invention has realized that the network topology structure of EOC equipment is searched and has improved and optimizated algorithm, can effectively improve SNMP agency's disposal ability, guarantees that simultaneously the SNMP agency realizes certain error control to the mib object node that had lost efficacy.
Description of drawings
Fig. 1 is the sketch map of the status of snmp protocol in TCP/IP protocol suite.
Fig. 2 is the operation chart of 5 kinds of messages in the snmp protocol.
Fig. 3 is the flow chart of embodiment of network topology search and the error control optimization method of coaxial load-bearing ethernet device of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further description.
Fig. 3 shows the flow process of embodiment of network topology search and the error control optimization method of coaxial load-bearing ethernet device of the present invention.Seeing also Fig. 3, is the detailed description to each step in the method for present embodiment below.
Step S100: on operation snmp protocol agency's EOC equipment, set up error control to crucial MIBOID through dynamic copies.
Step S101: through snmp protocol EOC equipment is done Equipment Inspection, obtain gateway address, be recorded in the data structure and also preserve.
Step S102: the MIB to EOC equipment conducts interviews through the instruction in the snmp protocol.
Step S103: differentiate according to crucial MIB OID information whether corresponding EOC equipment is the EOC equipment that needs are searched for,, otherwise get into step S104 if the EOC equipment that need search for then gets into step S105.
Step S104: begin to detect the EOC equipment on the wire cable network that EOC equipment couples together,, return step S101 then so that obtain relevant crucial MIB OID information.
Step S105: from the MIB OID information of EOC equipment, obtain the IP address table ipAddrTable of EOC equipment and relevant network topology structure information, write in the data structure and also preserve.
IP address table ipAddrTable comprises following information: the IP address corresponding equipment physical interface sign ipAdEntlfindex of the IP address ipAdEntAddr of network equipment entity, network equipment entity, the corresponding mask ipAdEntNetMask in IP address of network equipment entity.
Some entity is the equipment with a plurality of IP address, for example router, server.In Topology Discovery, to discern this situation, an entity is all represented in these addresses, otherwise finds that the result will be wrong.
Step S106: from the MIB OID of EOC equipment, obtain the IP route table ipRouteTable of EOC equipment and relevant network topology structure information, write in the data structure and also preserve.
IP route table ipRouteTable comprises following information: IP address, route destination ipRouteDest, corresponding router physical interface index ipRoutelfindex, the IP address ipRouteNextHop of route next jump, the type identification ipRouteType of route, the corresponding IP address mask ipRouteMask of route of route.
Step S107: carry out remaining OID detection of information relevant of MIB of EOC equipment, up to detecting the MIB OID information that all online EOC equipment relate to network topology structure, and preserve with the wire cable network.When preserving, to prevent that also duplicate message from writing data structure.
Step S108: the MIB data message of all EOC equipment that will collect gathers and generates the topology data storehouse of online EOC equipment, so that other equipment and software are searched fast and managed.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; Those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; The foregoing description is made various modifications or variation; Thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (3)
1. the network topology search of a coaxial load-bearing ethernet device and error control optimization method comprise:
(1) on the coaxial load-bearing ethernet device of operation snmp agent, sets up error control to crucial management information bank object identifier MIB OID through dynamic copies;
(2) through Simple Network Management Protocol the coaxial load-bearing ethernet device on the network is done Equipment Inspection, obtain gateway address and be recorded in the data structure and preserve;
(3) conduct interviews through the management information bank MIB of the instruction in the Simple Network Management Protocol to the coaxial load-bearing ethernet device;
(4) differentiate the corresponding coaxial load-bearing ethernet device coaxial load-bearing ethernet device whether needs are searched for according to the information of the object identifier OID among the crucial management information bank MIB; If the coaxial load-bearing ethernet device that need search for then gets into step (6), otherwise get into step (5);
(5) begin to detect coaxial load-bearing ethernet device on the wire cable network that couples together through the coaxial load-bearing ethernet device,, return step (2) then so that obtain relevant crucial management information bank object identifier MIB OID information;
(6) from the object identifier OID of the management information bank MIB of coaxial load-bearing ethernet device, obtain the ip address table ipAddrTable of coaxial load-bearing ethernet device and relevant network topology structure information; Write in the data structure and also preserve, wherein in Topology Discovery, discern equipment with a plurality of IP address according to IP address table ipAddrTable;
(7) from the object identifier OID of the management information bank MIB of coaxial load-bearing ethernet device, obtain the ip routing table ipRouteTable of coaxial load-bearing ethernet device and relevant network topology structure information, write in the data structure and preserve;
(8) carry out remaining object identifier OID detection of information relevant of the management information bank MIB of coaxial load-bearing ethernet device, up to the management information bank object identifier MIB OID information that relates to network topology structure that detects all online coaxial load-bearing ethernet devices and preserve with the wire cable network;
The management information bank MIB data message of all coaxial load-bearing ethernet devices that (9) will collect gathers and generates the topology data storehouse of online coaxial load-bearing ethernet device.
2. the network topology search of coaxial load-bearing ethernet device according to claim 1 and error control optimization method; It is characterized in that this ip address table ipAddrTable comprises following information: the IP address corresponding equipment physical interface sign of the IP address of network equipment entity, network equipment entity, the corresponding mask in IP address of network equipment entity.
3. the network topology search of coaxial load-bearing ethernet device according to claim 1 and error control optimization method; It is characterized in that this ip routing table ipRouteTable comprises following information: IP address, route destination, corresponding router physical interface index, the IP address of route next jump, the type identification of route, the corresponding IP address mask of route of route.
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| CN 200910200479 CN101753266B (en) | 2009-12-23 | 2009-12-23 | Network topology search and error control optimization method of coaxially-loading Ethernet equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101931560B (en) * | 2010-09-02 | 2013-03-20 | 华为技术有限公司 | Method and device for acquiring connection relationship between network equipment |
| CN102404150A (en) * | 2011-11-25 | 2012-04-04 | 浪潮电子信息产业股份有限公司 | Method for automatically generating network topology in cloud OS |
| CN106027121A (en) * | 2016-06-02 | 2016-10-12 | 陕西广电网络传媒（集团）股份有限公司 | EOC (Ethernet Over Cable) system user terminal operation state monitoring method |
| CN107707429B (en) * | 2017-10-17 | 2021-09-07 | 广东睿江云计算股份有限公司 | Method and system for discovering IP route interruption |
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| US6928475B2 (en) * | 1995-11-16 | 2005-08-09 | Peregrine Systems, Inc. | Method of determining the topology of a network of objects |
| CN1756189A (en) * | 2004-09-30 | 2006-04-05 | 北京航空航天大学 | IP network topology discovering method based on SNMP |
| CN101141308A (en) * | 2007-10-15 | 2008-03-12 | 清华大学 | Topology discovering method of IP backbone network |
| CN101170445A (en) * | 2007-11-20 | 2008-04-30 | 中兴通讯股份有限公司 | Topology method and system for IP network management cluster in simple network management |
| CN101534216A (en) * | 2009-04-24 | 2009-09-16 | 北京东土科技股份有限公司 | Automatic topology realisation method based on topological bucket algorithm |
| CN101577841A (en) * | 2008-05-09 | 2009-11-11 | 上海未来宽带技术及应用工程研究中心有限公司 | Method and system for realizing SNMP management of optical-fiber coaxial cable access network terminal equipment |
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Patent Citations (6)
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| US6928475B2 (en) * | 1995-11-16 | 2005-08-09 | Peregrine Systems, Inc. | Method of determining the topology of a network of objects |
| CN1756189A (en) * | 2004-09-30 | 2006-04-05 | 北京航空航天大学 | IP network topology discovering method based on SNMP |
| CN101141308A (en) * | 2007-10-15 | 2008-03-12 | 清华大学 | Topology discovering method of IP backbone network |
| CN101170445A (en) * | 2007-11-20 | 2008-04-30 | 中兴通讯股份有限公司 | Topology method and system for IP network management cluster in simple network management |
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