KR20160006650A - Connection relationship search system between network devices using the ARP table and FDB table - Google Patents

Connection relationship search system between network devices using the ARP table and FDB table Download PDF

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KR20160006650A
KR20160006650A KR1020150188711A KR20150188711A KR20160006650A KR 20160006650 A KR20160006650 A KR 20160006650A KR 1020150188711 A KR1020150188711 A KR 1020150188711A KR 20150188711 A KR20150188711 A KR 20150188711A KR 20160006650 A KR20160006650 A KR 20160006650A
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information
piece
equipment
connection
connection information
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KR1020150188711A
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Korean (ko)
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KR101766665B1 (en
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박권재
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(주)와치텍
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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
    • H04L41/085—Retrieval of network configuration; Tracking network configuration history
    • H04L41/0853—Retrieval of network configuration; Tracking network configuration history by actively collecting configuration information or by backing up configuration information
    • 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
    • H04L41/02—Standardisation; Integration
    • H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
    • 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
    • H04L41/02—Standardisation; Integration
    • H04L41/024—Standardisation; Integration using relational databases for representation of network management data, e.g. managing via structured query language [SQL]
    • 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
    • H04L41/02—Standardisation; Integration
    • H04L41/0246—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/10—Mapping addresses of different types
    • H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A system for searching a connection relation between network devices using an ARP table and an FDB table is disclosed so as to easily identify a failure location and a connection device through physical connection relation and configuration information of the network device. A system for searching a connection relation between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention includes a web server unit for inputting and inquiring basic information, An automatic scanner unit for collecting connection information and storing equipment information and connection information in the equipment information database, and an automatic scanner unit for removing redundant equipment from the new equipment stored in the equipment information database and storing the information collected from the equipment information database as physical connection information A data redundancy elimination unit for storing unique equipment information and physical connection information in the unique equipment database, a physical connection relation based on the unique equipment information and physical connection information stored in the unique equipment database, After that, it checks the device-specific connection information and Emitter may be included in the base unit for storing the mapping device-specific connection information and equipment-specific connection test information.

Description

[0001] The present invention relates to a connection relationship search system between network devices using an ARP table and an FDB table,

The present invention relates to a system for providing physical connection information of network equipment from an ARP table and an FDB table

And more particularly to an ARP table for grasping physical connection relation and configuration information through a variety of complicated network equipment through input IP band information, and a connection relation search system between network equipment using FDB table.

In the past, when the network configuration of the network equipment was not known in detail, it took a lot of time to detect the failure location of the network equipment. Therefore, it is necessary to remove redundant equipment, collect connection information, detect new equipment, and map connection information among many network devices in order to find information of desired equipment quickly and accurately.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method and system for collecting information by using SNMP and CLI (Command Line Interface) from a network switch supporting Simple Network Management Protocol (SNMP) And to provide a connection relation search system between network devices using an ARP table and an FDB table.

Also, there is provided an automatic scanner unit for performing an equipment scan function for the input IP band, a mapping unit for generating and checking connection information of data redundancy removal units for extracting a unique list of scanned devices, will be.

According to an aspect of the present invention, there is provided a system for searching a connection relation between network devices using an ARP table and an FDB table, the system comprising: a web server for inputting and inquiring basic information; An automatic scanner unit for detecting new equipment through the IP band information input from the web server unit, collecting connection information, and storing device information and connection information in an equipment information database; A data redundancy removing unit for removing redundant equipment from the new equipment stored in the equipment information database, converting the information collected from the equipment information database into physical connection information, storing the unique equipment information and the physical connection information in the unique equipment database, ; A physical connection relationship is searched based on the unique equipment information stored in the unique equipment database and the physical connection information, and connection information for each equipment is generated, and then the connection information for each equipment is examined, And a mapping unit for storing connection inspection information for each device.

According to another aspect of the present invention, there is provided a system for searching a connection relation between network devices using an ARP table and an FDB table according to another embodiment of the present invention. The automatic scanner includes an SNMP scanner for scanning IP bands input from the web server, A device detector for searching for a new device through the network; An FDB collector for constructing FDB information necessary for collecting connection information of the L2 equipment in the mapping unit; And an ARP collection unit for constructing ARP information necessary for collecting connection information of the L3 equipment in the mapping unit, wherein the web server unit operates at all times to receive user input and performance, transmit requested data, A database, the unique equipment information database, and the connection information database.

According to another aspect of the present invention, there is provided a system for searching a connection relation between network devices using an ARP table and an FDB table according to another embodiment of the present invention, The method includes the steps of determining whether the collected equipment is present; When information on the equipment is collected, requesting ipAddrTable for the collected equipment to extract IP information of the line; Performing a Ping command to a broadcast IP address of IPs extracted by the CLI connected to the collected devices; Requesting ipNetToMediaTable for the collected equipment to construct line, MAC, and IP information; Collecting Vlan information by requesting entLogicalTable for the collected equipment; Determining whether the Vlan information is present; When the Vlan information is collected, requesting dot1dBasePortTable and dot1dTpFdbTable information for each Vlan to construct Mac information for each physical port bound to Vlan; Converting the Vlan information in the constructed line, MAC, and IP information into information per physical port, and storing the result.

According to another aspect of the present invention, there is provided a system for searching a connection relation between network devices using an ARP table and an FDB table according to yet another embodiment of the present invention, Determining whether there is a duplicate equipment with the line IP information of the equipment; Determining if the IP list matches the collected duplicate devices; And deleting the second device among the duplicated devices matching the IP list, inspecting all the devices, and storing the result.

According to another aspect of the present invention, there is provided a system for searching a connection relationship between network devices using an ARP table and an FDB table according to another embodiment of the present invention, The method comprising the steps of: determining whether there is physical connection information collected; Generating map information for each equipment based on the collected physical connection information; Inputting port channel information into exception information; And generating connection information for each device until there is no physical connection information using map information for each device and storing the result.

According to another aspect of the present invention, there is provided a system for searching connection information between network devices using an ARP table and an FDB table according to another embodiment of the present invention, Determining whether there is information; Extracting circuit information having the smallest number of pieces of connection information for each piece of equipment-related piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of pieces of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece; Determining whether the number of connection information of the extracted line information is one; Extracting the connection information of the extracted line information and extracting connection information for each equipment by searching for the target equipment having the line information; Extracting connection information for each equipment by searching for a target equipment having connection information of the extracted line information at least two or more times and connecting information having the same line information, and deleting and storing remaining connection information; And determining whether the inspection has been completed for all the lines.

The connection relation searching system between the network equipment using the ARP table and the FDB table according to the present invention has the following effects.

(1) The present invention can easily grasp the position when a failure occurs through physical connection relation and configuration information of network equipment.

(2) The present invention provides equipment and application information connected to a faulty equipment in the event of a fault through the physical connection relation and configuration information of the network equipment, so that the ripple effect due to the fault can be easily grasped.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a system for searching a connection relation between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention; FIG.
2 is a flow chart for collecting physical connection information of the collected equipment;
Figure 3 is a flow chart for eliminating redundancy of collected equipment.
4 is a flow chart for finding a physical connection relationship;
FIG. 5 is a flow chart for generating connection information per equipment; FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a connection relation searching system between network devices using an ARP table and an FDB table according to preferred embodiments of the present invention will be described in detail. In the following description, well-known functions or constructions are not described in detail to avoid unnecessarily obscuring the subject matter of the present invention.

In this specification, ARP is an abbreviation of Address Resolution Protocol. It defines a protocol that is responsible for conversion between a network layer address and a link layer address. FDB is an abbreviation of a Forwarding Database. The bridge is a bridge having all MAC addresses .

1 is a block diagram illustrating a system for searching a connection relation between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention.

As shown in FIG. 1, a system for searching a connection relation between network devices using an ARP table and an FDB table according to an embodiment of the present invention includes a web server unit 130 for inputting and inquiring basic information; An automatic scanner unit 100 for detecting new equipment through IP band information input from the web server unit 130, collecting connection information and storing device information and connection information in an equipment information database 131; Removes redundant equipment from the new equipment stored in the equipment information database 131, converts information collected from the equipment information database 131 into physical connection information, and transmits unique equipment information and physical connection information A data de-duplication removing unit 110 for storing information; Based on the unique equipment information stored in the unique equipment database 132 and the physical connection information, generates physical connection information, generates equipment-specific connection information, examines connection information for each equipment, And a mapping unit 120 for storing the device-specific connection information and the device-specific connection inspection information.

The automatic scanner unit 100 includes a device detecting unit 101 for searching for a new device through SNMP scanning of an IP band inputted from the web server unit 130; An FDB collection unit (102) for constructing FDB information necessary for collecting connection information of the L2 equipment in the mapping unit (120); And an ARP collection unit (103) for constructing ARP information necessary for collecting connection information of the L3 equipment in the mapping unit (120).

The web server unit 130 always operates to receive the user input and execution and transmit the requested data and includes the equipment information database 131, the unique equipment information database 132, and the connection information database 133 can do.

FIG. 2 is a flowchart for collecting physical connection information of devices collected in a connection relation searching system between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention.

As shown in FIG. 2, a method for converting information collected in the equipment information database 131 into physical connection information includes determining whether the collected equipment exists (S100); When the information of the equipment is collected, a step of requesting ipAddrTable for the collected equipment and extracting the IP information of the line (S101); Performing a Ping command to a broadcast IP address of IPs extracted by the CLI connected to the collected devices (S102); Establishing a line, MAC, and IP information by requesting ipNetToMediaTable for the collected equipment (S103); Collecting Vlan information by requesting entLogicalTable for the collected equipment (S104); Determining whether the Vlan information exists (S105); When the Vlan information is collected, step (S106) is performed to request Macro information per physical port bound to Vlan by requesting dot1dBasePortTable and dot1dTpFdbTable information for each Vlan. (S107, S108) of converting the Vlan information in the established line, MAC, and IP information into information per physical port and storing the result.

Table 1 below shows a method of performing the Ping command to the broadcast IP address of the IPs extracted by the CLI of the above (S102).

Object identifier Object Description :: = {mib-2 4} Ip :: = {ip 20} IpAddrTable :: = {ipAddrTable 1} IpAddrEntry :: = {ipAddrEntry 1} IpAdEntAddr :: = {ipAddrEntry 2} IpAdEntIfIndex :: = {ipAddrEntry 3} IpAdEntNetMask :: = {ipAddrEntry 4} IpAdEntBcastAddr :: = {ipAddrEntry 5} ipAdEntReasmMaxSize

The method of inquiring the ipNetToMediaTable information of (S103) is shown in Table 2 below.

Object identifier Object Description :: = {mib-2 4} Ip :: = {ip 22} IpNetToMediaTable :: = {ipNetToMediaTable 1} IpNetToMediaEntry :: = {ipNetToMediaEntry 1} ipNetToMediaIfIndex :: = {ipNetToMediaEntry 2} ipNetToMediaPhysAddress :: = {ipNetToMediaEntry 3} ipNetToMediaNetAddress :: = {ipNetToMediaEntry 4} IpNetToMediaType

A method of inquiring the entLogicalTable information about the collected devices of the above (S104) is shown in Table 3 below.

Object identifier Object Description :: = {mib-2 47} EntityMIB :: = {entityMIB 1} entityMIBObjects :: = {entityMIBObjects 2} EntityLogical :: = {entityLogical 1} EntLogicalTable :: = {entLogicalTable 1} EntLogicalEntry :: = {entLogicalEntry 1} EntLogicalIndex :: = {entLogicalEntry 2} EntLogicalDescr :: = {entLogicalEntry 4} EntLogicalCommunity

The method of inquiring the information of dot1dBasePortTable and dot1dTpFdbTable for each Vlan in (S106) is the same as Table 4 (dot1dBasePortTable) and Table 5 (dot1dTpFdbTable) shown below.

Object identifier Object Description :: = {mib-2 17} dot1dBridge :: = {dot1dBridge 1} dot1dBase :: = {dot1dBase 4} dot1dBasePortTable :: = {dot1dBasePortTable 1} dot1dBasePortEntry :: = {dot1dBasePortEntry 1} dot1dBasePort :: = {dot1dBasePortEntry 2} dot1dBasePortIfIndex

Object identifier Object Description :: = {mib-2 17} dot1dBridge :: = {dot1dBridge 4} dot1dTp :: = {dot1dTp 3} dot1dTpFdbTable :: = {dot1dTpFdbTable 1} dot1dTpFdbEntry :: = {dot1dTpFdbEntry 1} dot1dTpFdbAddress :: = {dot1dTpFdbEntry 2} dot1dTpFdbPort

FIG. 3 is a flowchart for removing duplication of equipment collected in a connection relation search system between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention.

As shown in FIG. 3, a method for removing redundant equipment from new equipment stored in the equipment information database 131 includes determining whether equipment duplicated with line IP information of equipment exists (S200); Determining whether the IP list is identical to the collected duplicate devices (S201); (S202, S203, S204) of deleting the second device among the duplicated devices matching the IP list, inspecting all the devices, and storing the result (S202, S203, S204).

FIG. 4 is a flowchart for searching for a physical connection relationship in a connection relation searching system between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention.

As shown in FIG. 4, the method for searching the physical connection relationship of the mapping unit 120 and generating connection information for each device may include determining whether the collected physical connection information exists (S300); Generating map information for each equipment based on the collected physical connection information (S301); Inputting port channel information into the exception information (S302); (S303, S304, and S305) of generating connection information for each device until there is no physical connection information using the map information for each device and storing the result.

5 is a flowchart for generating device-specific connection information in a connection relation searching system between network devices using an ARP table and an FDB table according to a preferred embodiment of the present invention

As shown in FIG. 5, a method for inspecting the connection information of each device of the mapping unit 120 may include determining whether there is connection information for each device (S400);

(S401) extracting circuit information having the smallest number of pieces of connection information for each piece of equipment-specific piece of piece of piece of piece of piece of piece of piece of pieces of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of pieces of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece. Determining whether the number of connection information of the extracted line information is one (S402); (S403, S406) of extracting and storing connection information for each equipment by searching for the target equipment having the line information, one or more pieces of connection information of the extracted line information; Determining whether the number of pieces of connection information of the extracted line information is two or more (S404); (S405, S406) of extracting connection information for each equipment by searching for a target equipment having connection information of the extracted line information at least two or more times and having the same connection information having the line information, and deleting and storing remaining connection information; (S407) of determining whether the inspection has been completed for all the lines.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Automatic scanner unit 101: Equipment detection unit
102: FDB collecting unit 103: ARP collecting unit
110: data duplication removing unit 120: mapping unit
130: Web server unit 131: Equipment information database
132: unique equipment information database 133: connection information database

Claims (6)

A web server unit for inputting and inquiring basic information;
An automatic scanner unit for detecting new equipment through IP band information input from the web server unit, collecting connection information, and storing device information and connection information in an equipment information database;
A data redundancy removing unit for removing redundant equipment from the new equipment stored in the equipment information database, converting information collected from the equipment information database into physical connection information, and storing unique equipment information and physical connection information in a unique equipment database;
A physical connection relationship is searched based on the unique equipment information stored in the unique equipment database and the physical connection information, and connection information for each equipment is generated, and then the connection information for each equipment is examined, And a mapping unit for storing connection inspection information for each of the plurality of network devices.
The method according to claim 1,
Wherein the automatic scanner unit comprises: an equipment detector for searching for a new equipment through SNMP scanning of the IP band inputted from the web server unit; An FDB collector for building FDB information necessary for collecting connection information of the L2 equipment in the mapping unit; And an ARP collection unit for constructing ARP information necessary for collecting connection information of the L3 equipment in the mapping unit,
Wherein the web server unit operates at all times and receives user inputs and performances and transmits the requested data, and includes the equipment information database, the unique equipment information database, and the connection information database. Connection relation detection system between network devices.
The method according to claim 1,
A method for converting information collected in the equipment information database into physical connection information includes:
Determining whether the collected equipment is present;
When the information of the equipment is collected, requesting ipAddrTable for the collected equipment and extracting the IP information of the line;
Performing a Ping command to a broadcast IP address of IPs extracted by the CLI connected to the collected devices;
Requesting ipNetToMediaTable for the collected equipment to construct line, MAC, and IP information;
Collecting Vlan information by requesting an entLogicalTable for the collected equipment;
Determining whether the Vlan information is present;
When the Vlan information is collected, requesting dot1dBasePortTable and dot1dTpFdbTable information for each Vlan to construct Mac information for each physical port bound to Vlan;
And converting the Vlan information included in the constructed line, MAC, and IP information into information per physical port and storing the result.
The method according to claim 1,
A method for removing redundant equipment from new equipment stored in the equipment information database,
Determining whether duplicate equipment exists with the line IP information of the equipment;
Determining whether the IP list matches the collected duplicated equipment;
And a step of deleting the second device among the duplicated devices matching the IP list and checking the result of all the devices and storing the result of the checking of the connection relationship between the network devices using the ARP table and the FDB table. system.
The method according to claim 1,
The method for searching the physical connection relationship of the mapping unit and generating connection information for each equipment includes:
Determining whether the collected physical connection information exists;
Generating map information for each equipment based on the collected physical connection information;
Inputting port channel information into exception information;
And generating connection information for each device until there is no physical connection information using the map information for each device and storing the result.
The method according to claim 1,
A method for inspecting connection information for each device in the mapping unit,
Determining whether there is connection information for each device;
Extracting circuit information having the smallest number of pieces of connection information for each piece of equipment-related piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece of piece
Determining whether the number of pieces of connection information of the extracted line information is one;
Extracting the connection information of the extracted line information, extracting connection information for each equipment by searching for the target equipment having the line information;
Determining whether the number of connection information of the extracted line information is two or more;
Extracting connection information for each equipment by searching for a target equipment having connection information of the extracted line information at least two or more times and connecting information having the same line information, and deleting and storing remaining connection information;
And determining whether all the lines have been inspected. The system of claim 1, further comprising:

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KR101654734B1 (en) 2016-03-09 2016-09-06 국방과학연구소 Method for modelling information transmission network having hierarchy structure and apparatus thereof
KR20200071554A (en) * 2018-12-11 2020-06-19 주식회사 케이티 Apparatus and method for searching link of access network

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JP4402660B2 (en) * 2006-02-22 2010-01-20 キヤノン株式会社 Network management system and network management method
KR100697680B1 (en) * 2006-06-29 2007-03-20 주식회사 케이티 Apparatus and Method for Searching Network Topology

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KR101654734B1 (en) 2016-03-09 2016-09-06 국방과학연구소 Method for modelling information transmission network having hierarchy structure and apparatus thereof
US10091069B2 (en) 2016-03-09 2018-10-02 Agency For Defense Development Method for modelling information transmission network having hierarchical structure and apparatus thereof
KR20200071554A (en) * 2018-12-11 2020-06-19 주식회사 케이티 Apparatus and method for searching link of access network

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