CN106817439A - A kind of method for obtaining MAC Address - Google Patents
A kind of method for obtaining MAC Address Download PDFInfo
- Publication number
- CN106817439A CN106817439A CN201710072895.3A CN201710072895A CN106817439A CN 106817439 A CN106817439 A CN 106817439A CN 201710072895 A CN201710072895 A CN 201710072895A CN 106817439 A CN106817439 A CN 106817439A
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- CN
- China
- Prior art keywords
- vlan
- mac address
- tag
- ipc
- network
- Prior art date
- 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
-
- 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
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
Abstract
The invention provides a kind of method for obtaining MAC Address, comprise the following steps：Network data frame is got based on VLAN modules in operating system nucleus；VLAN Tag are obtained by the network data frame and packet is originated and records MAC Address；The VLAN Tag of above-mentioned acquisition are marked and corresponding MAC Address is recorded, the present invention can conveniently obtain the LAN mouthfuls of MAC Address of corresponding IPC, and by VLAN network interface cards can not also be normally carried out network communication with the IPC in VLAN.
Description
Technical field
The present invention relates to network configuration management field, and in particular to a kind of method of acquisition MAC Address.
Background technology
The configuration management of the network equipment includes one group to distinguishing, defining, control and monitoring the right of one communication network of composition
As necessary correlation function.Distinguish, monitor that the network equipment is then generally basede on the detection of the network equipment.Network Personal Video Recorder (NVR)
Need the web camera (IPC) of management different type and different IP addresses and audio/video flow and video recording can be obtained, need first
Various video cameras can be detected.
For the Network Personal Video Recorder of tape swap machine function, then need to know the corresponding IPC of each switch ports themselves (LAN mouthful)
MAC Address, by MAC Address obtain IPC relevant information, such that it is able to the passage of IPC and NVR is associated, carry out
The configuration of IPC, the acquisition of audio frequency and video, display, video recording etc. are operated.
The association of switch ports themselves and video recorder passage is typically realized by two schemes：
1st, interchanger carries MAC writing functions, and the MAC Address of IPC is obtained by interchanger configuration feature.
2nd, interchanger is recorded without MAC, by the MAC Address of VLAN (VLAN) technical limit spacing IPC.
The exchanger chip hardware cost that the first scheme needs is higher, therefore is used second current most of NVR more
Scheme.NVR based on VLAN schemes and IPC to interact schematic diagram as shown in Figure 1.
VLAN is VLAN (Virtual Local Area Network), is a kind of by by setting in LAN
For logically rather than the technology for being physically divided into the network segment one by one.Vlan technology allows network manager by physics
LAN is logically divided into different broadcast domains (or virtual lan, i.e. VLAN), and each VLAN has identical comprising one group
The computer workstation of demand, has identical attribute with the LAN for physically forming.
VLAN is proposed to solve the broadcast issue and security of Ethernet, and it increases on the basis of ethernet frame
User, smaller working group is divided into VLAN Tag by VLAN heads, and each working group is exactly a VLAN.Virtually
The benefit of LAN is can to form virtual workgroup, dynamic management network.Different VLAN are put under by LAN mouthfuls, IPC is accessed
After LAN mouthfuls, VLAN is contained in VLAN frame heads for packet adds VLAN frame heads automatically when the packet of IPC is by interchanger
Tag.CPU is automatically forwarded to corresponding Microsoft Loopback Adapter after receiving the packet of band VLAN frame heads.As a example by Fig. 1, should
With program from VLAN1 correspondence virtual nets eth0:1 data for receiving must just come from IPC1, by parsing the source in packet
MAC Address is it is known that the MAC Address of IPC.And then the operations such as the IP settings of IPC are carried out by MAC Address, set IPC's
IP is with Microsoft Loopback Adapter in the same network segment, it is possible to a series of management are carried out to IPC by the IP of IPC and is operated.
The MAC Address of IPC is obtained using virtual network card technology scheme at present and is had with the subject matters that communicate of IPC：(1) it is empty
The management for intending network interface card is complex.Need to add or delete virtual in an operating system by Microsoft Loopback Adapter specialized configuration instrument
Network interface card.Each Microsoft Loopback Adapter needs IP sections different and subnet mask of configuration, when system needs to change the IP of itself, then owns
Microsoft Loopback Adapter IP and subnet mask be required for change, if the subnet that miscarriage easily occurs belonging to each Microsoft Loopback Adapter goes out
Now conflict causes to be gone wrong with the communication of video camera.(2) need to send packet to all of Microsoft Loopback Adapter during detecting devices
And response bag is detected, and multithreading realization is generally required, increased to system resources consumption.(3) needed during the IP of modification video camera
The corresponding relation of video camera and Microsoft Loopback Adapter is specified, otherwise needs to send management bag to all Microsoft Loopback Adapters.Problem above causes
NVR network configuration management complexities based on Microsoft Loopback Adapter are higher, and R＆D costs increase.And use and carry MAC writing functions
Exchange hardware cost is also higher.
The NVR of tape swap machine function typically has following steps to the record of the MAC Address of IPC in existing technology：
(1), each LAN mouthfuls of interchanger be put into different VLAN by Network Personal Video Recorder, and sets different VLAN
Tag, interchanger adds VLAN frame heads automatically to the packet for receiving after setting.
Shown in the form table 1 of VLAN frame heads (4 bytes)：
Table 1
PRI：Frame priority.
CFI：Specification flag.
TAG：VLAN ID.
(2), the different VLAN of the multiple Microsoft Loopback Adapters correspondences of video recorder itself establishment, corresponding LAN mouthfuls so as to correspond to, i.e.,
The packet received from certain Microsoft Loopback Adapter must send from the video camera of corresponding LAN mouthfuls access；
(3), Network Personal Video Recorder is that all of LAN mouthfuls form by broadcasting sends detection data to all of Microsoft Loopback Adapter
Bag；
(4) after the detection bag that, web camera is received, the correspondence is sent by the form of broadcast, multicast or unicast
Response bag to send detection bag Network Personal Video Recorder；
(5), Network Personal Video Recorder collects probe response bag on each Microsoft Loopback Adapter and parses corresponding video camera information,
So as to video camera and Microsoft Loopback Adapter are mapped, and Microsoft Loopback Adapter and LAN according to (2) mouthful corresponding relation derivation
Go out video camera MAC Address and LAN mouthfuls of relation.
For the Network Personal Video Recorder of tape swap machine function, each passage is one-to-one relationship with LAN mouthfuls, is determined by detecting
After the MAC Address of IPC and LAN mouthful of corresponding relation, the relation of each passages of NVR and IPC is just specify that, by IPC's and NVR
Each passage binding, has just reached the purpose that convenience manages video camera, can easier realize the automatic management of video camera.
Shown in reference picture 2, the acquisition IPC MAC Address flows of prior art cause existing scheme more complicated
Reason is the packet that must could receive each VLAN from kernel using Microsoft Loopback Adapter.Therefore application program needs management each
VLAN network interface cards, and data read-write operation is carried out respectively to each network interface card.
The content of the invention
In order to solve the defect of above-mentioned deficiency, the invention provides a kind of method for obtaining MAC Address, can directly in
Core inquires the MAC Address of VLAN correspondences IPC, wherein the MAC Address for obtaining IPC is an a kind of implementation method therein, but
Including but not limited to IPC, substantially ethernet device can be realized.
The invention provides a kind of method for obtaining MAC Address, comprise the following steps：
Network data frame is got based on VLAN modules in operating system nucleus；
VLAN Tag are obtained by the network data frame and packet is originated and records MAC Address；
The VLAN Tag of above-mentioned acquisition are marked and corresponding MAC Address is recorded.
Above-mentioned method, wherein, it is described that the VLAN Tag of above-mentioned acquisition are marked and corresponding MAC Address is recorded
In step, application program is marked by above-mentioned VLAN Tag and directly can inquire the MAC ground that VLAN modules correspond to IPC by inside core
Location.
Above-mentioned method, wherein, it is described that the VLAN Tag of above-mentioned acquisition are marked and corresponding MAC Address is recorded
In step, VLAN Tag are set to 0.
Above-mentioned method, wherein, it is described based on the step of VLAN modules get network data frame in operating system nucleus
Including：Each LAN mouthfuls of interchanger be put into different VLAN modules by Network Personal Video Recorder, and sets different VLAN Tag,
Interchanger adds VLAN frame heads automatically to the packet for receiving after setting.
The present invention has advantages below：(1) the LAN mouthfuls of MAC Address of corresponding IPC can conveniently be obtained.(2) do not pass through
VLAN network interface cards can also be normally carried out network communication with the IPC in VLAN.
Brief description of the drawings
By the detailed description made to non-limiting example with reference to the following drawings of reading, the present invention and its feature, outward
Shape and advantage will become more apparent upon.Identical mark indicates identical part in whole accompanying drawings.Not deliberately proportionally
Draw accompanying drawing, it is preferred that emphasis is purport of the invention is shown.
Fig. 1 is the VLAN schematic diagrames of the NVR of tape swap machine function in the prior art.
Fig. 2 is the flow chart for obtaining each LAN mouthfuls of corresponding MAC in the prior art.
Fig. 3 is the flow chart that the present invention obtains IPC MAC Address.
Specific embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And, it is obvious to the skilled person that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Explaination technical scheme.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, this
Invention can also have other embodiment.
Shown in reference picture 1- Fig. 3, the invention provides a kind of method for obtaining MAC Address, comprise the following steps：
Step S1：Network data frame is got based on VLAN modules in operating system nucleus, including based on operation system
The step of VLAN modules get network data frame in system kernel includes：Each LAN mouthfuls of interchanger be put into by Network Personal Video Recorder
In different VLAN modules, and different VLAN Tag are set, interchanger adds VLAN automatically to the packet for receiving after setting
Frame head.
Step S2：VLAN Tag are obtained by the network data frame and packet is originated and records MAC Address.
Step S3：The VLAN Tag of above-mentioned acquisition are marked and corresponding MAC Address is recorded, further preferably, will
VLAN Tag are set to 0, wherein, application program is marked by above-mentioned VLAN Tag and directly can inquire VLAN modules by inside core
The MAC Address of correspondence IPC.
The present invention is based on the basis of using vlan technology, and the corresponding VLAN of packet of acquisition is recorded in kernel
After Tag and MAC Address Tag in VLAN frames is set to 0, it is to avoid application program carries out the Microsoft Loopback Adapter operation of complexity, subtracts
Development amount is lacked.Being required for the interchanger with MAC Address writing function can also easily carry out the detection of video camera
And management, reduce hardware cost.That is it is of the invention to it is critical only that VLAN modules get in operating system nucleus
Network data frame, obtains VLAN Tag and packet carrys out source MAC and records, then by the VLAN of data frame from data frame
Tag is changed to 0. application program and directly can inquire the MAC Address that VLAN corresponds to IPC by inside core, can reach two purposes：(1) may be used
The LAN mouthfuls of MAC Address of corresponding IPC is obtained to facilitate.(2) can also normally not entered with the IPC in VLAN by VLAN network interface cards
Row network communication.
Below for the industry name being related in the present invention is explained.With reference to shown in table 2.
Table 2
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure that do not describe in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply；Any those of ordinary skill in the art, in the case where technical solution of the present invention ambit is not departed from, all using the disclosure above
Methods and techniques content make many possible variations and modification to technical solution of the present invention, or be revised as equivalent variations etc.
Effect embodiment, this has no effect on substance of the invention.Therefore, every content without departing from technical solution of the present invention, foundation
Technical spirit of the invention still falls within the present invention to any simple modification, equivalent variation and modification made for any of the above embodiments
In the range of technical scheme protection.
Claims (4)
1. it is a kind of obtain MAC Address method, it is characterised in that comprise the following steps：
Network data frame is got based on VLAN modules in operating system nucleus；
VLAN Tag are obtained by the network data frame and packet is originated and records MAC Address；
The VLAN Tag of above-mentioned acquisition are marked and corresponding MAC Address is recorded.
2. a kind of method for obtaining MAC Address as claimed in claim 1, it is characterised in that the VLAN by above-mentioned acquisition
In the step of Tag is marked and records corresponding MAC Address, application program by above-mentioned VLAN Tag mark can directly to
Kernel inquires the MAC Address of VLAN modules correspondence IPC.
3. a kind of method for obtaining MAC Address as claimed in claim 1, it is characterised in that the VLAN by above-mentioned acquisition
In the step of Tag is marked and records corresponding MAC Address, VLAN Tag are set to 0.
4. a kind of method for obtaining MAC Address as claimed in claim 1, it is characterised in that described based on operating system nucleus
The step of middle VLAN modules get network data frame includes：Each LAN mouthfuls of interchanger be put into different by Network Personal Video Recorder
In VLAN modules, and different VLAN Tag are set, interchanger adds VLAN frame heads automatically to the packet for receiving after setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072895.3A CN106817439A (en) | 2017-02-10 | 2017-02-10 | A kind of method for obtaining MAC Address |
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|---|---|---|---|
| CN201710072895.3A CN106817439A (en) | 2017-02-10 | 2017-02-10 | A kind of method for obtaining MAC Address |
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Family
ID=59113102
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| CN201710072895.3A Pending CN106817439A (en) | 2017-02-10 | 2017-02-10 | A kind of method for obtaining MAC Address |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683701A (en) * | 2018-04-03 | 2018-10-19 | 浙江大华技术股份有限公司 | A kind of connection method and rear end equipment, IPC |
| CN110381178A (en) * | 2019-08-02 | 2019-10-25 | 杭州巨峰科技有限公司 | NVR module and its out drawing method and POE-NVR mould group |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108683701A (en) * | 2018-04-03 | 2018-10-19 | 浙江大华技术股份有限公司 | A kind of connection method and rear end equipment, IPC |
| CN110381178A (en) * | 2019-08-02 | 2019-10-25 | 杭州巨峰科技有限公司 | NVR module and its out drawing method and POE-NVR mould group |
| CN110381178B (en) * | 2019-08-02 | 2022-04-01 | 杭州巨峰科技有限公司 | NVR module and drawing method thereof and POE-NVR module |
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Application publication date: 20170609 |