CN115086271B - Method for searching equipment in local area network - Google Patents
Method for searching equipment in local area network Download PDFInfo
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- CN115086271B CN115086271B CN202210693375.5A CN202210693375A CN115086271B CN 115086271 B CN115086271 B CN 115086271B CN 202210693375 A CN202210693375 A CN 202210693375A CN 115086271 B CN115086271 B CN 115086271B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000000875 corresponding effect Effects 0.000 claims description 12
- 230000000977 initiatory effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- 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]
Abstract
The invention discloses a device searching method in a local area network, which inserts the device information to be searched into a special ARP request message and then sends the message to LLDP neighbor devices, the devices receiving the message compare the information, and if the message is matched, a special ARP request message is replied to an initiating device and an indicator lamp is flashed. The invention can find whether the equipment is in the network according to MAC, IP (V4V 6) or SN codes and the like, and give an instruction when finding the real object.
Description
Technical Field
The invention relates to the technical field of local area network equipment searching, in particular to a method for searching equipment in a local area network.
Background
Each device in the lan has a unique device Serial Number (SN) and MAC address, and after connection to the network, there is at least one IP address on the device, as shown in fig. 1, where the device can look up the device Serial Number (SN), MAC address and IP address. Devices may include switches, routers, firewalls, servers, computers, wireless devices, and the like.
As shown in fig. 2, when there are a large number of devices in a lan, it is difficult to confirm whether the serial number, MAC, IP of a given device is on-line or located. The manual approach to troubleshooting or searching requires a great deal of time and effort.
Disclosure of Invention
According to an embodiment of the present invention, there is provided a method for searching devices in a local area network, including the following steps:
acquiring a piece of equipment, and inputting information needing to search the equipment into a command line of the equipment for searching;
if the searching equipment is found, finishing the searching, if the searching equipment is not found, constructing a special ARP request protocol data message, and forwarding the special ARP request protocol data message to all neighbor equipment found by the LLDP protocol;
the special ARP request protocol data message comprises a destination IP of 255.255.255.255, a source IP of an IP address of a local port and information of a searching device;
after receiving the special ARP request protocol data message, the neighbor device compares the information and executes corresponding actions until the neighbor device with the same information as the special ARP request protocol data message is found;
when the equipment receives a message with information for searching the equipment, a system lamp of the equipment and a port indicator lamp of the received message flash for preset time at the frequency of 200ms, and an ARP request protocol response message is constructed and sent back;
the ARP request protocol response message comprises a source IP of 255.255.255.255, a destination IP of the request equipment, information of the search equipment and TTL with a field of 0;
and the neighbor equipment receives the ARP request protocol response message, compares the information, and executes corresponding actions until the neighbor equipment which is the same as the information of the ARP request protocol response message is found, so that the search of the search equipment is completed.
Further, after receiving the special ARP request protocol data message, the neighbor device performs information comparison and performs corresponding actions until finding the neighbor device with the same information as the special ARP request protocol data message, which comprises the following sub-steps:
searching whether the source IP of the IP address of the local port is a special ARP request protocol data message received for the first time, discarding if not, otherwise, comparing the information of the searching equipment in the special ARP request protocol data message with the local information;
if the special ARP request protocol data message is different from the local information, broadcasting the special ARP request protocol data message to other neighbor devices except the neighbor device which receives the special ARP request protocol data message firstly, and recording a source IP which is an IP address of a local port and a port which receives the special ARP request protocol data message in a database of the device;
if the information is the same as the local information, a message with information for searching the equipment is returned to the equipment.
Further, the records of the database may age within 1 minute.
Further, the information of the searching device is recorded in the DATA in the special ARP request protocol DATA message, and the DATA is in TLV format.
Further, the neighbor device receives the ARP request protocol response message, performs information comparison, and executes corresponding actions until the neighbor device which is the same as the ARP request protocol response message is found, and comprises the following sub-steps:
if the target IP is the IP of the neighbor equipment receiving the ARP request protocol response message, printing the received equipment information, and flashing the equipment system lamp and the port indicator lamp receiving the message for a preset time at the frequency of 200 (n+1) ms, wherein n is the value of TTL;
if the target IP is not the IP of the neighbor equipment receiving the ARP request protocol response message, adding 1 to TTL, and flashing the equipment system lamp and the port indicator lamp receiving the message for preset time at the frequency of 200 xnms, wherein n is the value of TTL;
if the destination IP is not the IP configured on the neighbor device receiving the ARP request protocol response message, checking whether a source port of the destination IP exists in the record of the database, if so, sending the ARP request protocol response message to the neighbor device, and simultaneously flashing the port receiving the message for a preset time at the frequency of 200 xnms, wherein n is a TTL value.
Further, the preset time is 30s.
Further, the DATA of the ARP request protocol response message must carry a Chasis ID TLV, a Port ID TLV, a TTL TLV, and an End TLV.
According to the method for searching the equipment in the local area network, which is disclosed by the embodiment of the invention, whether the equipment is in the network or not can be searched according to MAC, IP (V4V 6) or SN codes and the like, and an instruction is given when the real object is searched.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the technology claimed.
Drawings
Fig. 1 is a diagram showing information of devices in a local area network.
Fig. 2 is a block diagram of a local area network having a plurality of devices.
Fig. 3 is a flowchart of a method for searching devices in a local area network according to an embodiment of the present invention.
Fig. 4 is a first substep diagram of a method for searching devices in a lan according to an embodiment of the invention.
Fig. 5 is a second sub-step diagram of a method for searching devices in a local area network according to an embodiment of the present invention.
Fig. 6 is a block diagram of a special ARP request protocol data message of a device lookup method in a lan according to an embodiment of the invention.
Fig. 7 is a structural diagram of TLV format of a device lookup method in a local area network according to an embodiment of the present invention.
Fig. 8 is a block diagram of the format of DATA of a special ARP request protocol DATA message for a device lookup method in a local area network according to an embodiment of the invention.
Fig. 9 is a block diagram Of an End Of TLV Of a device lookup method in a local area network according to an embodiment Of the present invention.
Fig. 10 is a block diagram of DATA of an ARP request protocol response message of a device lookup method in a lan according to an embodiment of the invention.
Fig. 11 is a block diagram of a device search method in a local area network according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the attached drawings, which further illustrate the present invention.
First, a method for searching for a device in a local area network according to an embodiment of the present invention will be described with reference to fig. 3 to 10, where the method is used to find whether the device is in the network according to needs, and the application scenario is wide.
As shown in fig. 3 to 10, the method for searching the equipment in the local area network according to the embodiment of the invention comprises the following steps:
in S1, as shown in fig. 3, a device is acquired, and information required to search the device is input in a command line of the device to search.
In S2, as shown in fig. 3, if the search device is found, the search is ended, and if the search device is not found, a special ARP request protocol data message is constructed and forwarded to all neighbor devices found by the LLDP (Link Layer Discovery Protocol) protocol.
In S3, as shown in fig. 3, the special ARP request protocol data message includes a destination IP of 255.255.255.255, a source IP that is an IP address of the local port, and information of the lookup device. In this embodiment, further, as shown in fig. 6, the information of the lookup device is recorded in DATA in the special ARP request protocol DATA packet, where DATA is in TLV format, and the TLV format is shown in fig. 7, and the TYPE of TLV is defined in the following table:
| TLV Type | TLV Name | Usage |
| 0 | End Of TLV | Mandatory |
| 1 | Chassis ID | Optional |
| 2 | Port ID | Optional |
| 3 | Time To Live | Optional |
| 4 | Port Description | Optional |
| 5 | System Name | Optional |
| 6 | System Description | Optional |
| 7 | System Capabilities | Optional |
| 8 | Management Address | Optional |
| 9-122 | Reserved for future standardization | Optional |
| 123 | MAC Request | Optional |
| 124 | IPV4 Request | Optional |
| 125 | IPV6 Request | Optional |
| 126 | SN Request | Optional |
| 127 | Organizationally Specific | Optional |
wherein the TLV for manager is the part that the DATA must contain. The request message DATA contains one TLV of types 123-126 in the format shown in fig. 8 and an End of TLV in the format shown in fig. 9.
In S4, as shown in fig. 3, after receiving the special ARP request protocol data packet, the neighbor device performs information comparison, and performs a corresponding action until finding a neighbor device that is the same as the information of the special ARP request protocol data packet.
Further, in this embodiment, as shown in fig. 4, after receiving the special ARP request protocol data packet, the neighbor device performs information comparison, and performs a corresponding action until finding a neighbor device with the same information as the special ARP request protocol data packet includes the following substeps (i.e., the first substep):
in S41, as shown in fig. 4, whether the source IP of the IP address of the local port is the special ARP request protocol data packet received for the first time is searched, if not, discarding is performed, otherwise, the information of the searching device in the special ARP request protocol data packet is compared with the local information.
In S42, as shown in fig. 4, if the special ARP request protocol data message is different from the local information, the special ARP request protocol data message is broadcast to other neighbor devices except the neighbor device that first received the special ARP request protocol data message, and the source IP that is the IP address of the local port and the port that receives the special ARP request protocol data message are recorded in the database of the device. Further, in this embodiment, the records of the database may age within 1 minute.
In S43, as shown in fig. 4, if the local information is the same as the local information, a message with information of the search device is returned to the device.
In S5, as shown in fig. 3, when the device receives a message with information for searching the device, the system lamp of the device and the port indicator lamp receiving the message flash for a preset time at a frequency of 200ms, and construct an ARP request protocol response message, and send the ARP request protocol response message back. In this embodiment, the preset time is 30s.
In S6, as shown in fig. 3, the ARP request protocol response message includes a source IP of 255.255.255.255, a destination IP of the requesting device, information of the searching device, and a TTL of field 0, and further, in this embodiment, the DATA of the ARP request protocol response message must carry a chase ID TLV, a Port ID TLV, a TTL TLV, and an End TLV. The DATA content of the ARP request protocol reply message is shown in fig. 10. Where TTL represents the number of spacer devices.
In S7, as shown in fig. 3, the neighbor device receives the ARP request protocol response message, performs information comparison, and performs a corresponding action until the neighbor device that is the same as the ARP request protocol response message is found, so as to complete the search of the search device.
Further, in this embodiment, as shown in fig. 5, the neighbor device receives the ARP request protocol response message, performs information comparison, and performs a corresponding action until the neighbor device that finds the same information as the ARP request protocol response message includes the following substep (i.e., the second substep):
in S71, as shown in fig. 5, if the destination IP is the IP of the neighbor device that receives the ARP request protocol response message, the received device information is printed out, and the device system lamp and the port indicator lamp that receives the message flash for a preset time at a frequency of 200× (n+1) ms, where n is a TTL value. In this embodiment, further, the preset time is 30s.
In S72, as shown in fig. 5, if the destination IP is not the IP of the neighbor device that receives the ARP request protocol response message, the TTL is added with 1, and the device system lamp and the port indicator lamp that receives the message flash for a preset time at a frequency of 200×nms, where n is the value of the TTL. In this embodiment, further, the preset time is 30s.
In S73, as shown in fig. 5, if the destination IP receives the IP configured on the neighbor device of the ARP request protocol response message, check whether the record of the database has the source port of the destination IP, if so, send the ARP request protocol response message to the neighbor device, and flash the port receiving the message for a preset time at a frequency of 200×nms, where n is a value of TTL. In this embodiment, further, the preset time is 30s.
In the above, the method for searching for devices in a local area network according to the embodiment of the present invention is described with reference to fig. 3 to 10, and may search for whether a device is in the network according to MAC, IP (V4V 6), SN code, or the like, and give an instruction when searching for a real object.
As shown in fig. 11, in the present embodiment, the MAC in the lan is searched for: 0000-0123-8783 device is present (IP SN, etc.). The method comprises the following specific steps:
connecting a PC to a panel port of the Leaf1 equipment through a network cable, and sending and searching MAC by the computer: 0000-0123-8783.
After receiving the message from the P1 port, the Leaf1 finds that the message is not matched with the device, and sends the message to the neighbor device Leaf2 Spine1 Spine2 and Server1. And the software is recorded, and the message is from the port P1.
After receiving the messages from the ports, the Leaf2 Server1 and the Spine1 find that the messages are not matched with the information of the equipment, send request messages to other neighbor equipment except the Leaf1, and record software. After 1 minute the record was aged off. After the Leaf2 receives the request message sent by the Server1, the request message is directly discarded after finding that the record exists. (the same message is received by other devices and is also processed).
After receiving the message from the port P3, the Spine2 finds out that the message is matched with the equipment, blinks the equipment system lamp and the port P3 indicator lamp for 30 seconds at the frequency of 200ms, and constructs a response message. Sent back from port P3.
After receiving the response message, leaf1 searches the software record and finds that the exit port is P1. After changing the TTL of the message to 1, the message is sent out from the P1 port, and the equipment system lamp and the port P1 and P2 indicator lamps flash at 400ms frequency.
After the PC receives the response message from the network port, the computer system lamp and the network port indicator lamp flash for 30 seconds at the frequency of 400 ms.
And the information is printed out.
The PC may also connect to the Leaf1 portal, initiating a lookup request through Leaf 1.
It should be noted that in this specification the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (5)
1. A method for searching devices in a local area network, comprising the steps of:
acquiring a piece of equipment, and inputting information of equipment to be searched into a command line of the equipment for searching;
if the searching equipment is found, finishing searching, if the searching equipment is not found, constructing a special ARP request protocol data message, and forwarding the special ARP request protocol data message to all neighbor equipment found by an LLDP protocol;
the special ARP request protocol data message comprises a destination IP of 255.255.255.255, a source IP of an IP address of a local port and information of the searching equipment;
after receiving the special ARP request protocol data message, the neighbor device compares the information and executes corresponding actions until finding the neighbor device with the same information as the special ARP request protocol data message;
when the equipment receives a message with information for searching the equipment, a system lamp of the equipment and a port indicator lamp for receiving the message flash for preset time at the frequency of 200ms, and an ARP request protocol response message is constructed and sent back;
the ARP request protocol response message comprises a source IP of 255.255.255.255, a destination IP of the request equipment, the information of the search equipment and a TTL with a field of 0;
the neighbor device receives the ARP request protocol response message, compares the information, and executes corresponding actions until the neighbor device which is the same as the information of the ARP request protocol response message is found, so as to complete the search of the search device;
after receiving the special ARP request protocol data message, the neighbor device performs information comparison and executes corresponding actions until finding the neighbor device with the same information as the special ARP request protocol data message, and the neighbor device comprises the following sub-steps:
searching whether the source IP which is the IP address of the local port is the special ARP request protocol data message received for the first time, if not, discarding the special ARP request protocol data message, otherwise, comparing the information of the searching equipment in the special ARP request protocol data message with local information;
if the special ARP request protocol data message is different from the local information, broadcasting the special ARP request protocol data message to other neighbor devices except the neighbor device which receives the special ARP request protocol data message firstly, and recording the source IP which is the IP address of the local port and a port which receives the special ARP request protocol data message in a database of the device;
if the information is the same as the local information, a message with information of searching equipment is returned to the equipment;
the neighbor device receives the ARP request protocol response message, compares the information, and executes corresponding actions until finding the neighbor device with the same information as the ARP request protocol response message, comprising the following sub-steps:
if the target IP is the IP of the neighbor equipment receiving the ARP request protocol response message, printing the received equipment information, and flashing an equipment system lamp and a port indicator lamp receiving the message for the preset time at the frequency of 200 (n+1) ms, wherein n is the value of TTL;
if the target IP is not the IP of the neighbor equipment receiving the ARP request protocol response message, adding 1 to TTL, and flashing the equipment system lamp and the port indicator lamp receiving the message for preset time at the frequency of 200 xnms, wherein n is the value of TTL;
if the destination IP is not the IP configured on the neighbor device receiving the ARP request protocol response message, checking whether a source port of the destination IP exists in the record of the database, if so, sending the ARP request protocol response message to the neighbor device, and simultaneously, flashing the port receiving the message for the preset time at the frequency of 200 xnms, wherein n is a TTL value.
2. The method of claim 1, wherein the database records age within 1 minute.
3. The method for searching for devices in a local area network as claimed in claim 1, wherein said information for searching for devices is recorded in DATA in said special ARP request protocol DATA message, said DATA being in TLV format.
4. The method for searching for devices in a local area network as set forth in claim 1, wherein the preset time is 30s.
5. The method for device lookup in a local area network as claimed in claim 1 wherein the DATA of the ARP request protocol reply message must carry a Chasis ID TLV, a Port ID TLV, a TTL TLV, and an End TLV.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010072096A1 (en) * | 2008-12-25 | 2010-07-01 | 中兴通讯股份有限公司 | Method and broadband access device for improving the security of neighbor discovery in ipv6 environment |
| CN107124297A (en) * | 2017-03-31 | 2017-09-01 | 广州九乐维信息科技有限公司 | SNMP method for discovering network topology and device based on zabbix |
| CN108574673A (en) * | 2017-03-10 | 2018-09-25 | 武汉安天信息技术有限责任公司 | ARP message aggression detection method and device applied to gateway |
| CN112910735A (en) * | 2021-01-30 | 2021-06-04 | 山东兆物网络技术股份有限公司 | Comprehensive detection method and system for discovering illegal external connection of intranet equipment |
| CN114584496A (en) * | 2022-02-28 | 2022-06-03 | 杭州联吉技术有限公司 | Device discovery method, device, client and storage medium |
| CN114598675A (en) * | 2022-01-20 | 2022-06-07 | 北京北信源软件股份有限公司 | Control method, device, equipment and medium for realizing host blocking based on ARP |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8255497B2 (en) * | 2008-11-03 | 2012-08-28 | Lincoln Global, Inc. | Method of discovery and communication with industrial equipment |
| US9621461B2 (en) * | 2015-01-27 | 2017-04-11 | Vmware, Inc. | Media access control (MAC) address table protection in a virtualized computing environment |
| US11075857B2 (en) * | 2019-06-13 | 2021-07-27 | Cisco Technology, Inc. | Peephole optimization of lightweight protocols at lower layers |
-
2022
- 2022-06-17 CN CN202210693375.5A patent/CN115086271B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010072096A1 (en) * | 2008-12-25 | 2010-07-01 | 中兴通讯股份有限公司 | Method and broadband access device for improving the security of neighbor discovery in ipv6 environment |
| CN108574673A (en) * | 2017-03-10 | 2018-09-25 | 武汉安天信息技术有限责任公司 | ARP message aggression detection method and device applied to gateway |
| CN107124297A (en) * | 2017-03-31 | 2017-09-01 | 广州九乐维信息科技有限公司 | SNMP method for discovering network topology and device based on zabbix |
| CN112910735A (en) * | 2021-01-30 | 2021-06-04 | 山东兆物网络技术股份有限公司 | Comprehensive detection method and system for discovering illegal external connection of intranet equipment |
| CN114598675A (en) * | 2022-01-20 | 2022-06-07 | 北京北信源软件股份有限公司 | Control method, device, equipment and medium for realizing host blocking based on ARP |
| CN114584496A (en) * | 2022-02-28 | 2022-06-03 | 杭州联吉技术有限公司 | Device discovery method, device, client and storage medium |
Non-Patent Citations (4)
| Title |
|---|
| J.C. Mogul ; J. Postel.Internet Standard Subnetting Procedure (RFC0950).Internet Standard Subnetting Procedure (RFC0950).2019,全文. * |
| LLDP协议在网络管理中的应用;李逸飞 等;网络安全和信息化(第06期);全文 * |
| 利用虚拟环境搭建ARP攻防实训;郭惠丽;;电脑知识与技术(第26期);全文 * |
| 运用地址转换实现子网划分;余绍军;网络安全技术与应用(第07期);全文 * |
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Address after: 3 / F, 665 Zhangjiang Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Yunhe Zhiwang (Shanghai) Technology Co.,Ltd. Country or region after: China Address before: 311203 floor 12, building 2, Purple Orange International Center, No. 39, Jincheng Road, Xiaoshan District, Hangzhou, Zhejiang Province Patentee before: Hangzhou yunhezhi Network Technology Co.,Ltd. Country or region before: China |