CN107919999A - The discovery of different segment digital camera and connection method in a kind of LAN - Google Patents
The discovery of different segment digital camera and connection method in a kind of LAN Download PDFInfo
- Publication number
- CN107919999A CN107919999A CN201711168596.6A CN201711168596A CN107919999A CN 107919999 A CN107919999 A CN 107919999A CN 201711168596 A CN201711168596 A CN 201711168596A CN 107919999 A CN107919999 A CN 107919999A
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- CN
- China
- Prior art keywords
- digital camera
- arp
- segment
- address
- interface card
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
-
- 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
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Environmental & Geological Engineering (AREA)
- Studio Devices (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
It is as follows that the present invention provides the discovery of different segment digital camera and connection method, its process in a kind of LAN：1st, monitor and receive the ARP messages from LAN；2nd, the network interface card IP and its place network segment that terminal is sent are extracted from ARP messages, and records terminal IP and its network segment；3rd, the network segment according to where terminal IP, when user searches for digital camera, adds the unappropriated IP address for having recorded the network segment, and retain the original IP of network interface card on the machine network interface card；4th, search protocol message is sent to terminal using same network segment IP, obtains feedback information；5th, user carries out data connection by network IP where adding digital camera to digital camera.This method can also not only be attached video camera by the video camera in broadcast search protocol discovery LAN by way of adding IP on video recorder network interface card, avoid user from carrying out cumbersome IP distribution and configuration.
Description
Technical field
The invention belongs to field of video monitoring, found more particularly, to different segment digital camera in a kind of LAN and
Connection method.
Background technology
Address resolution protocol, i.e. ARP (Address Resolution Protocol), are to obtain physics according to IP address
One ICP/IP protocol of address.ARP request comprising target ip address is broadcast to the institute on network by host when sending information
There is host, and receive return message, the physical address of target is determined with this；Receive and return after message by the IP address and physically
Location is stored in the machine arp cache and retains certain time, and next time directly inquires about arp cache to economize on resources when asking.Every makes
With the digital camera of ICP/IP protocol, it is necessary to which possessing the MAC Address of destination host can correctly send the data to
Destination host, the MAC Address corresponding to target ip address can be obtained by ARP protocol, so every number for being connected into LAN
Word video camera all can dynamic access or transmission ARP protocol message.
In video surveillance applications, the network address of user configuration digital camera and the network of video cassette recorder are generally required
Address, if the two is in same LAN, it is necessary to which the two configuration in the same network segment, so just can guarantee that number by user
Word video camera and video cassette recorder normal communication.But which adds the burden of user configuration, influence user experience.
Such as, it is assumed that the video recorder IP in LAN is that 10.30.31.68 subnet masks are 255.255.255.0, and LAN memory
In the video camera that IP address is 192.168.2.6 and 192.168.1.99, video recorder is broadcasted by current IP 10.30.31.68
Digital camera find agreement, be the feedback that can not obtain video camera, and in LAN, also can not manually add
The mode of IP connects the video camera of different segment.Therefore, different segment digital camera in a kind of efficiently errorless LAN is researched and developed
Machine is found and connection method is a urgent problem to be solved.
The content of the invention
In view of this, the present invention is directed to propose in a kind of LAN different segment digital camera find and connection method,
On video recorder network interface card add IP by way of, not only can by the video camera in broadcast search protocol discovery LAN,
Video camera can also be attached.User is avoided to carry out cumbersome IP distribution and configuration.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
Different segment digital camera is found in a kind of LAN and connection method, its process are as follows：
1st, monitor and receive the ARP messages from LAN；
2nd, the network interface card IP and its place network segment that terminal is sent are extracted from ARP messages, and records terminal IP and its network segment；
3rd, the network segment according to where terminal IP, when user searches for digital camera, adds on the machine network interface card and has recorded the network segment
Unappropriated IP address, and retain network interface card original IP；
4th, search protocol message is sent to terminal using same network segment IP, obtains feedback information；
5th, user carries out data connection by network IP where adding digital camera to digital camera.
Further, in step 1, the ARP messages from LAN are collected, create watcher thread, starts and monitors
Socket, the ARP messages of listening broadcast, filters received data packet, obtains the ARP protocol that non-native network interface card is sent
Message.
Further, the ARP recording parameterses specifically include：ARP message senders IP address, ARP messages sender institute
The network segment renewal time where network segment data, ARP messages receiving time and ARP message senders.ARP message receiving times are main
The newest line durations of IP for updating ARP senders, network segment renewal time where ARP messages sender are used to update this network segment
Line duration.
Further, in step 1, the ARP Receive message times are recorded by ARP tape decks, renewal obtain IP and
The time of the network segment where it, when the ARP messages for not obtaining identical IP or phase same network segment again for a long time and sending, to the IP that has recorded and
Network segment data are deleted.
Further, in step 3, unused IP address in other interior network segments of LAN is obtained, is recorded by Searching I P,
The IP address not being recorded is searched, before adding IP address on network interface card, ARP broadcast is sent and checks whether this IP address is occupied,
If time-out does not receive ARP and replys message, this IP address is added on network interface card.
Further, in step 4, digital camera is sent by different segment IP on network interface card and finds Radio Broadcasting Agreements, is connect
The reply from digital camera is received, gets real digital camera IP.
Further, when in same LAN the IP of video cassette recorder and digital camera respectively in different segment when, depending on
Frequency video recorder by adding the IP address of the digital camera network segment on the machine network interface card, by this IP address and digital camera into
Row data connection.
Further, no matter whether user monitor before in the IP of addition digital camera manually on video cassette recorder
To the ARP data with digital camera same network segment, will be added on network interface card and the IP address of digital camera same network segment.
Further, the digital camera quantity under the same network segment of connection is recorded, when quantity is more than or equal to 1,
The IP address under the same network segment is added on the machine network interface card, when the digital camera quantity of connection is equal to 0, is removed on the machine network interface card
IP address under the same network segment of addition.
Relative to the prior art, different segment digital camera is found in LAN of the present invention and connection method has
There is following advantage：This method can not only pass through broadcast search protocol discovery by way of adding IP on video recorder network interface card
Video camera in LAN, can also be attached video camera, avoid user from carrying out cumbersome IP distribution and configuration；With height
The advantages that imitating, be convenient, errorless.
Brief description of the drawings
The attached drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is ARP message format schematic diagrames in the embodiment of the present invention；
Fig. 2 is the schematic diagram of the embodiment of the present invention.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
Different segment digital camera is found in a kind of LAN and connection method, its process are as follows：
1st, monitor and receive the ARP messages from LAN.
Specific method is：The ARP messages from LAN are collected, create watcher thread, starts and monitors socket, are monitored wide
The ARP messages broadcast, filter received data packet, obtain the message for the ARP protocol that non-native network interface card is sent.Pass through ARP
Tape deck, records the ARP Receive message times, and renewal obtains the time of IP and its place network segment, when not obtaining phase again for a long time
The ARP messages sent with IP or phase same network segment, delete the IP and network segment data recorded.
The ARP recording parameterses specifically include：Network segment number where ARP message senders IP address, ARP messages sender
According to network segment renewal time where, ARP messages receiving time and ARP messages sender.ARP message receiving times are mainly used for updating
The newest line durations of IP of ARP senders, network segment renewal time where ARP messages sender be used to updating this network segment it is online when
Between.
2nd, the network interface card IP and its place network segment that terminal is sent are extracted from ARP messages, and records terminal IP and its network segment.
3rd, the network segment according to where terminal IP, when user searches for digital camera, adds on the machine network interface card and has recorded the network segment
Unappropriated IP address, and retain network interface card original IP.
Unused IP address in other interior network segments of LAN is obtained, is recorded by Searching I P, searches the IP address not being recorded,
Before adding IP address on network interface card, send ARP broadcast and check whether this IP address is occupied, if time-out does not receive ARP replies
Message, then add this IP address on network interface card.
4th, search protocol message is sent to terminal using same network segment IP, obtains feedback information.Pass through different nets on network interface card
Section IP sends digital camera and finds Radio Broadcasting Agreements, receives the reply from digital camera, gets real digital camera
Machine IP.
5th, user carries out data connection by network IP where adding digital camera to digital camera.
No matter whether user listen to and taken the photograph with numeral in the IP of addition digital camera manually on video cassette recorder before
The ARP data of camera same network segment, will add and the IP address of digital camera same network segment on network interface card.
When in same LAN the IP of video cassette recorder and digital camera respectively in different segment when, video cassette recorder leads to
The IP address that the digital camera network segment is added on the machine network interface card is crossed, data company is carried out by this IP address and digital camera
Connect.
The digital camera quantity under the same network segment of connection is recorded, when quantity is more than or equal to 1, on the machine network interface card
The IP address under the same network segment is added, when the digital camera quantity of connection is equal to 0, is added on removal the machine network interface card same
IP address under the network segment.
Illustrate the course of work with reference to specific embodiment：
Collect the ARP messages from LAN；Watcher thread is created, starts and monitors socket, the ARP reports of listening broadcast
Text, filters received data packet, obtains the message for the ARP protocol that non-native network interface card is sent.
The network interface card IP and its place network segment of the transmission of terminal, ARP protocol message as shown in Figure 1 are extracted from the message
Message part includes sender's physical address, sender's IP address, purpose physical address, destination IP after ARP stems, and the present invention needs
Sender's IP address of needs is extracted from ARP messages.
Record terminal IP and its network segment；As shown in Fig. 2, by the sender's IP address got, such as 192.168.2.6 and
192.168.1.99 and it is 24 i.e. 255.255.255.0 to give tacit consent to its subnet mask.
When user searches for digital camera, the unappropriated IP address for having recorded the network segment is added on the machine network interface card, such as
192.168.2.166；The ARP network segment data listened to are traveled through, check whether 192.168.2.166 is occupied, to protect
For the sake of danger, established socket is reused, by splicing ARP messages, to sender's physical address, sender's IP address, mesh
Physical address and destination IP field be filled, whether broadcast query 192.168.2.166 is taken by other-end.
Digital camera is sent by different segment IP on network interface card and finds Radio Broadcasting Agreements, by 192.168.2.166 and
192.168.1.128 and the original IP 10.30.31.68 of the machine network interface card send Radio Broadcasting Agreements.
Receive the reply from digital camera, get real digital camera IP 192.168.2.6 and
192.168.1.99, user is shown to, allows user to choose whether to be attached.
Data connection is carried out to digital camera by network IP where adding digital camera, user is in video cassette recorder
When IP is 192.168.2.6 digital cameras in upper addition LAN, connected by the IP192.168.2.166 of same network segment
Connect, reaching user, manual configuration IP can not add digital camera.
Using this method, video cassette recorder is being received after the ARP messages that digital camera in LAN is sent, and is led to
Parsing ARP Receive messages are crossed to digital camera IP address, the unappropriated IP address of the same network segment is added on the machine network interface card,
It can directly search and connect digital camera, without being set by digital camera or by the IP of video cassette recorder to same net
Under section, do not increase user and additionally configure.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (9)
1. the discovery of different segment digital camera and connection method in a kind of LAN, it is characterised in that its process is as follows：
1) monitor and receive the ARP messages from LAN；
2) the network interface card IP and its place network segment that terminal is sent are extracted from ARP messages, and records terminal IP and its network segment；
3) network segment according to where terminal IP, when user searches for digital camera, adds on the machine network interface card and has recorded the network segment not
Occupied IP address, and retain the original IP of network interface card；
4) search protocol message is sent to terminal using same network segment IP, obtains feedback information；
5) user carries out data connection by network IP where adding digital camera to digital camera.
2. the discovery of different segment digital camera and connection method, its feature in a kind of LAN according to claim 1
It is：In step 1, the ARP messages from LAN are collected, create watcher thread, starts and monitors socket, listening broadcast
ARP messages, received data packet is filtered, obtains the message for the ARP protocol that non-native network interface card is sent.
3. the discovery of different segment digital camera and connection method in a kind of LAN according to claim 1 or 2, it is special
Sign is：In step 1, by ARP tape decks, the ARP Receive message times are recorded, renewal obtains IP and its place network segment
Time, when the ARP messages for not obtaining identical IP or phase same network segment again for a long time and sending, to the IP that has recorded and network segment data into
Row is deleted.
4. the discovery of different segment digital camera and connection method, its feature in a kind of LAN according to claim 1
It is：The ARP recording parameterses specifically include：ARP message senders IP address, network segment data where ARP messages sender,
ARP messages receiving time and ARP messages sender place network segment renewal time.
5. the discovery of different segment digital camera and connection method, its feature in a kind of LAN according to claim 1
It is：In step 3, unused IP address in other interior network segments of LAN is obtained, is recorded by Searching I P, lookup is not recorded
IP address, on network interface card add IP address before, send ARP broadcast checks whether this IP address occupied, if time-out do not receive
Message is replied to ARP, then this IP address is added on network interface card.
6. the discovery of different segment digital camera and connection method, its feature in a kind of LAN according to claim 1
It is：In step 4, digital camera is sent by different segment IP on network interface card and finds Radio Broadcasting Agreements, receives and is taken the photograph from numeral
The reply of camera, gets real digital camera IP.
7. the discovery of different segment digital camera and connection method, its feature in a kind of LAN according to claim 1
It is：When in same LAN the IP of video cassette recorder and digital camera respectively in different segment when, video cassette recorder passes through
The IP address of the digital camera network segment is added on the machine network interface card, data connection is carried out by this IP address and digital camera.
8. the discovery of different segment digital camera and connection method in a kind of LAN according to claim 1 or 7, it is special
Sign is：No matter whether user listen to and taken the photograph with numeral in the IP of addition digital camera manually on video cassette recorder before
The ARP data of camera same network segment, will add and the IP address of digital camera same network segment on network interface card.
9. the discovery of different segment digital camera and connection method, its feature in a kind of LAN according to claim 1
It is：The digital camera quantity under the same network segment of connection is recorded, when quantity is more than or equal to 1, is added on the machine network interface card
Add the IP address under the same network segment, when the digital camera quantity of connection is equal to 0, remove the same net added on the machine network interface card
IP address under section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711168596.6A CN107919999A (en) | 2017-11-21 | 2017-11-21 | The discovery of different segment digital camera and connection method in a kind of LAN |
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| CN201711168596.6A CN107919999A (en) | 2017-11-21 | 2017-11-21 | The discovery of different segment digital camera and connection method in a kind of LAN |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111147623A (en) * | 2019-12-27 | 2020-05-12 | 深圳市丰润达科技有限公司 | Method for realizing whole-network host scanning, server and computer readable storage medium |
| CN113573023A (en) * | 2021-07-27 | 2021-10-29 | 长视科技股份有限公司 | Camera network distribution method and device, computer equipment and storage medium |
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