CN105847147B - A data transmission method and device - Google Patents
A data transmission method and device Download PDFInfo
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- CN105847147B CN105847147B CN201610153378.4A CN201610153378A CN105847147B CN 105847147 B CN105847147 B CN 105847147B CN 201610153378 A CN201610153378 A CN 201610153378A CN 105847147 B CN105847147 B CN 105847147B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/66—Layer 2 routing, e.g. in Ethernet based MAN's
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Abstract
The present invention provides the transmission method and device of a kind of data, this method comprises: parsing the MAC Address of source device and the hop count of address resolution message process from the address resolution message when receiving by first port from the address resolution message of other ring headend equipments；MAC Address list item is safeguarded using the first port, the MAC Address and the hop count；When sending the data that target MAC (Media Access Control) address is the MAC Address, the MAC Address list item is inquired using the target MAC (Media Access Control) address, and the data are sent by the MAC Address list item.According to the technical solution of the present invention, in the loop network of video monitoring system, it does not need using complicated looped network agreement, it does not need to solve the problems, such as loop network using network equipments such as interchanger or routers, the broadcast storm problem in loop network can be solved, and optimal path is selected to send data.
Description
Technical field
The present invention relates to monitoring technology field more particularly to the transmission methods and device of a kind of data.
Background technique
In video monitoring system, networking mode shown in FIG. 1, each IPC (IP Camera, network shooting can be used
Machine) equipment is all connected to NVR (Network Video Recorder, network hard disk video recorder) equipment, and NVR equipment and NVR
Using linearly connected mode between equipment, the function such as NVR equipment receives the video data of IPC equipment transmission, and stored, managed
Can, to realize networking bring distributed structure/architecture advantage.For example, in a column subway or high-speed rail train, when each section arranges
When a NVR equipment and several IPC equipment are placed in vehicle compartment, then networking mode shown in FIG. 1 can be used.
Under above-mentioned networking mode, it is assumed that client is installed, then client can have access to each compartment in real time at headstock
The video data of interior IPC equipment.But if a certain link of linearly connected breaks down, will lead to client without
Method has access to the video data of the IPC equipment in each compartment in real time, and reliability is not high.In view of the above-mentioned problems, Fig. 2 institute can be used
The annular networking mode shown, even if a certain link breaks down, the IPC that client can also be had access in real time in each compartment is set
Standby video data.
In annular networking, it will usually generate broadcast storm.For example, the NVR equipment in compartment 1, passes through connection headstock
Video data is sent to client by port, and video data is sent to client by the port by connecting compartment 2, to lead
Broadcast storm can be generated by causing the video data of the IPC equipment in compartment 1.Similarly, the video of the IPC equipment in other compartments
Data can also generate broadcast storm.
Summary of the invention
The present invention provides a kind of transmission method of data, applies in loop network, includes more on the ring of the loop network
A ring headend equipment, the method are applied in ring headend equipment, which comprises
When being received by first port from the address resolution message of other ring headend equipments, from the address resolution
The hop count that the MAC Address and the address resolution message that source device is parsed in message pass through；
MAC Address list item is safeguarded using the first port, the MAC Address and the hop count；
When sending the data that target MAC (Media Access Control) address is the MAC Address, inquired using the target MAC (Media Access Control) address described
MAC Address list item, and the data are sent by the MAC Address list item.
The process using the first port, the MAC Address and the hop count maintenance MAC Address list item, specifically
It include: to judge in mac address table with the presence or absence of the corresponding MAC Address list item of the MAC Address；If it is not, then in the MAC
Record the corresponding MAC Address list item of the MAC Address in the table of location, the MAC Address list item includes the first port, described
MAC Address and the hop count；If it is, hop count and the hop count in more already existing MAC Address list item；If preceding
Person is less than or equal to the latter, then retains already existing MAC Address list item in the mac address table；If the former is greater than the latter,
The port in already existing MAC Address list item is then replaced with into the first port, and by already existing MAC Address list item
In hop count replace with the hop count.
The method also includes:
After receiving the address resolution message from other ring headend equipments by first port, before judging the ring
Whether end equipment is the first ring headend equipment for handling the address resolution message on the ring；If it is, abandoning describedly
Location analytic message；If it is not, then executing the MAC Address for parsing source device from the address resolution message and address solution
Analyse the process for the hop count that message passes through；
In the jump that the MAC Address for parsing source device from the address resolution message and the address resolution message pass through
After number, in the address resolution message, the hop count that the address resolution message passes through is added 1, and pass through the first end
Other all of the port except mouthful send the address resolution message.
The method also includes:
When receiving the address resolution message outside the ring by second port, from the address resolution message
The MAC Address of source device is parsed, and safeguards MAC Address list item using the second port, the MAC Address；Describedly
In the analytic message of location, initial value is set by the hop count that the address resolution message passes through, and set upper ring apparatus mark to
The unique identification of the ring headend equipment, and the address resolution is sent by other all of the port except the second port
Message；
It is described to judge whether the ring headend equipment is the first ring front end for handling the address resolution message on the ring
The process of equipment, specifically includes: judging that the upper ring apparatus carried in the address resolution message identifies whether to set for this ring front end
Standby unique identification；If it is, determining that the ring headend equipment is the first processing address resolution message on the ring
Ring headend equipment；If it is not, then determining that the ring headend equipment is not the first processing address resolution message on the ring
Ring headend equipment.
The address resolution message specifically includes: ARP request message；The loop network specifically includes: video monitoring system
The loop network of system；The ring headend equipment specifically includes: NVR equipment, IPC equipment, analog video camera equipment, encoder are set
Standby, decoder apparatus, digital video camcorder equipment.
The present invention provides a kind of transmitting device of data, applies in loop network, includes more on the ring of the loop network
A ring headend equipment, described device are applied in ring headend equipment, and described device includes:
Processing module, for when being received by first port from the address resolution message of other ring headend equipments,
The hop count that the MAC Address and the address resolution message that source device is parsed from the address resolution message pass through；Safeguard mould
Block, for safeguarding MAC Address list item using the first port, the MAC Address and the hop count；Sending module is used for
When sending the data that target MAC (Media Access Control) address is the MAC Address, the mac address table is inquired using the target MAC (Media Access Control) address
, and the data are sent by the MAC Address list item.
The maintenance module is specifically used for safeguarding MAC using the first port, the MAC Address and the hop count
During address list item, judge in mac address table with the presence or absence of the corresponding MAC Address list item of the MAC Address；If not,
The corresponding MAC Address list item of the MAC Address is then recorded in mac address table, the MAC Address list item includes the first end
Mouth, the MAC Address and the hop count；If it is, hop count and the jump in more already existing MAC Address list item
Number；If the former is less than or equal to the latter, already existing MAC Address list item is retained in the mac address table；If the former is big
In the latter, the port in already existing MAC Address list item is replaced with into the first port, and by already existing MAC
Hop count in the list item of location replaces with the hop count.
The processing module is also used to receiving the address resolution report from other ring headend equipments by first port
After text, judge whether the ring headend equipment is the first ring headend equipment for handling the address resolution message on ring；If
It is then to abandon the address resolution message；If it is not, then parsing the MAC Address of source device from the address resolution message
The hop count passed through with the address resolution message；
The processing module is also used in the MAC Address that parses source device from the address resolution message and described
After the hop count that address resolution message passes through, in the address resolution message, by the hop count of address resolution message process
Add 1；The sending module is also used to send the address resolution report by other all of the port except the first port
Text.
The processing module is also used to when receiving the address resolution message outside the ring by second port,
The MAC Address of source device is parsed from the address resolution message；In the address resolution message, by the address resolution
The hop count that message passes through is set as initial value, and sets upper ring apparatus mark to the unique identification of the ring headend equipment；Institute
Maintenance module is stated, is also used to utilize the second port, MAC Address maintenance MAC Address list item；The sending module, also
For sending the address resolution message by other all of the port except the second port；
The processing module, specifically for judging whether the ring headend equipment is first on the ring handle describedly
During the ring headend equipment of location analytic message, judge the upper ring apparatus carried in the address resolution message identify whether as
The unique identification of this ring headend equipment；If it is, determining that the ring headend equipment is the first processing address on the ring
The ring headend equipment of analytic message；If it is not, then determining that the ring headend equipment is not the first processing address on the ring
The ring headend equipment of analytic message.
The address resolution message specifically includes: ARP request message；The loop network specifically includes: video monitoring system
The loop network of system；The ring headend equipment specifically includes: NVR equipment, IPC equipment, analog video camera equipment, encoder are set
Standby, decoder apparatus, digital video camcorder equipment.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, in the loop network of video monitoring system, receiving ground
When the analytic message of location, by safeguarding MAC (Media Access Control, media access control) address list item, so as to
Data are sent by the MAC Address list item, without using complicated looped network agreement, are not needed using interchanger or routing
The network equipments such as device solve the problems, such as loop network, so that it may solve broadcast storm problem in loop network, and select most
Shortest path sends data.
Detailed description of the invention
It, below will be to the present invention in order to clearly illustrate the embodiment of the present invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is only some embodiments recorded in the present invention for those of ordinary skill in the art can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the networking schematic diagram in the prior art using linearly connected mode；
Fig. 2 is the networking schematic diagram in the prior art using annular networking mode；
Fig. 3 is the networking schematic diagram of the loop network in one embodiment of the present invention；
Fig. 4 is the flow chart of the transmission method of the data in one embodiment of the present invention；
Fig. 5 is the hardware structure diagram of the ring headend equipment in one embodiment of the present invention；
Fig. 6 is the structure chart of the transmitting device of the data in one embodiment of the present invention.
Specific embodiment
In terminology used in the present invention merely for the sake of for the purpose of describing particular embodiments, it is not intended to limit the present invention.This hair
The "an" of singular used in bright and claims, " described " and "the" are also intended to including most forms, unless
Context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to comprising one or more
Associated any or all of project listed may combine.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the present invention
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the scope of the invention, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, in addition, used word " if " can be construed to " ... when " or " when ... "
Or " in response to determination ".
Aiming at the problems existing in the prior art, a kind of transmission method of data, the party are proposed in the embodiment of the present invention
Method can be applied in loop network, and may include multiple ring headend equipments on the ring of the loop network.Wherein, the ring network
Network can specifically include but be not limited to: the loop network of video monitoring system, and the ring headend equipment can specifically include but not
It is limited to: NVR equipment, IPC equipment, analog video camera equipment, encoder device, decoder apparatus, digital video camcorder (DVC) equipment
Deng.
In order to avoid the generation of broadcast storm, in the loop network of the communications field, interchanger or routing can be disposed
The network equipments such as device, and looped network agreement is enabled on network devices, for example, RPR (Resilient Packet Ring, elasticity point
Group ring) agreement, ERPS (Ethernet Ring Protection Switching, the polycyclic protection of Ethernet) agreement, RRPP
(Rapid Ring Protection Protocol, rapid ring protection protocol) etc..And in the ring network of video monitoring system
In network, the network equipments such as interchanger or router will not be disposed, do not support complicated looped network agreement, are not available looped network association
View is to solve broadcast storm problem.Based on this, the embodiment of the present invention proposes a kind of transmission method of data, can be without using exchange
The network equipments such as machine or router solve the problems, such as loop network, do not need using current looped network agreement.
In the embodiment of the present invention, the equipment in loop network can be divided into the equipment on ring and it is acyclic on equipment,
Equipment on ring can be headend equipment, it is acyclic on equipment can be headend equipment, or other types of equipment, such as
Client, monitor, PC (Personal Computer, personal computer) etc..In order to distinguish headend equipment on ring and acyclic
On headend equipment, the headend equipment on ring can be known as to ring headend equipment, and can will be acyclic on headend equipment be known as
Acyclic headend equipment.
Using Fig. 3 as the application scenarios schematic diagram of the embodiment of the present invention, ring headend equipment may include that NVR equipment 1, NVR are set
Standby 2, NVR equipment 3, NVR equipment 4, NVR equipment 5, are connected to an acyclic headend equipment (IPC equipment 1) under NVR equipment 1,
It is connected to an acyclic headend equipment (IPC equipment 2) under NVR equipment 2, a client is connected under NVR equipment 5.
Under above-mentioned application scenarios, the transmission method of the data proposed in the embodiment of the present invention can be applied to be set in ring front end
It is standby upper, as shown in figure 4, the transmission method of the data may comprise steps of:
Step 401, when being received by first port from the address resolution message of other ring headend equipments, from the ground
The hop count that the MAC Address and the address resolution message that source device is parsed in the analytic message of location pass through.Wherein, the address resolution report
Stationery body can include but is not limited to: ARP (Address Resolution Protocol, address resolution protocol) request message,
Gratuitous ARP packet etc..
Step 402, MAC Address list item is safeguarded using first port, the MAC Address and the hop count.
In the embodiment of the present invention, the process of first port, the MAC Address and the hop count maintenance MAC Address list item, tool are utilized
Body can include but is not limited to such as under type: judge in mac address table with the presence or absence of the corresponding MAC Address list item of the MAC Address.
If it is not, then recording the corresponding MAC Address list item of the MAC Address in mac address table, which includes first end
Mouth, the MAC Address and the hop count.If it is, hop count and the hop count in more already existing MAC Address list item；If
The former is less than or equal to the latter, then retains already existing MAC Address list item in mac address table；If the former is greater than the latter,
Port in already existing MAC Address list item is replaced with into first port, and by the jump in already existing MAC Address list item
Number replaces with the hop count.
Step 403, it when sending the data that target MAC (Media Access Control) address is the MAC Address, is inquired using the target MAC (Media Access Control) address
The MAC Address list item, and the data are sent by the MAC Address list item.
In the embodiment of the present invention, by first port receive the address resolution message from other ring headend equipments it
Afterwards, can also judge whether this ring headend equipment is the first ring headend equipment for handling the address resolution message on ring.If so,
Then directly abandon the address resolution message, no longer will be performed parsed from the address resolution message source device MAC Address and
The process for the hop count that the address resolution message passes through also no longer executes subsequent step.If it is not, then executing from the address resolution report
The process for the hop count that the MAC Address and the address resolution message that source device is parsed in text pass through, and execute subsequent step.
In the embodiment of the present invention, in the MAC Address and the address resolution for parsing source device from the address resolution message
After the hop count that message passes through, the hop count that address resolution message passes through can also be added 1, and pass through in address resolution message
Other all of the port except first port send address resolution message.
In the embodiment of the present invention, (the acyclic front end i.e. on acyclic is set being received outside ring by second port
Standby or client etc.) address resolution message when, then the MAC of source device can be parsed from the address resolution message
Location, and safeguard MAC Address list item using second port, the MAC Address, i.e., a mac address table is generated in mac address table
, and record has second port and the MAC Address in the MAC Address list item.It in one example, can also be in the MAC Address
Hop count is recorded in list item, which can be initial value -1, and initial value is usually 1, therefore the hop count is 0.
In the embodiment of the present invention, (i.e. acyclic headend equipment or client are being received outside ring by second port
Deng) address resolution message after, can also in the address resolution message, by the address resolution message pass through hop count be arranged
For initial value (such as 1), and the unique identification (such as IP address) of this ring headend equipment is set by upper ring apparatus mark, and pass through
Other all of the port except second port send the address resolution message.Based on this, judge whether this ring headend equipment is ring
The process of the upper first ring headend equipment for handling the address resolution message, can specifically include but be not limited to such as under type: judgement
The upper ring apparatus carried in address resolution message identifies whether as the unique identification of this ring headend equipment；If it is, determining this
Ring headend equipment is the ring headend equipment of first processing address resolution message on ring；If it is not, then determining this ring headend equipment not
It is the ring headend equipment of first processing address resolution message on ring.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, in the loop network of video monitoring system, receiving ground
When the analytic message of location, by safeguarding MAC Address list item, so as to send data by the MAC Address list item, without making
With complicated looped network agreement, do not need to solve the problems, such as loop network using network equipments such as interchanger or routers, just
It can solve the broadcast storm problem in loop network, and optimal path selected to send data, networking deployment way is efficiently, fastly
It is prompt, quick.
Below in conjunction with application scenarios shown in Fig. 3, the above process is described in detail.Under this application scene, set with NVR
The standby 1 lower IPC equipment 1 connected sends ARP request message to the lower client connected of NVR equipment 5, and client is returned to IPC equipment 1
It returns for the process of arp response message.
Step 1, IPC equipment 1 send ARP request message to NVR equipment 1, and the source IP address of the ARP request message is IPC
The IP address of equipment 1, source MAC are the MAC Address of IPC equipment 1, and purpose IP address is the IP address of client, purpose MAC
Address is broadcast MAC address.
Step 2, NVR equipment 1 receive the ARP request message outside ring by port P3, from the ARP request message
The MAC Address of IPC equipment 1 is parsed, and generates a MAC Address list item in mac address table, for example, the MAC Address list item
It is middle to record the MAC Address for having port P3 and IPC equipment 1.Based on this MAC Address list item, NVR equipment 1 is with receiving purpose MAC
When location is the data of the MAC Address of IPC equipment 1, which is sent by port P3.
In one example, hop count can also be recorded in the MAC Address list item, which can be initial value -1, just
Initial value typically 1, therefore, the hop count can be 0.In addition, VLAN (Virtual can also be recorded in MAC Address list item
Local Area Network, virtual LAN) other information such as mark, learning state, ageing time, maintenance process with it is existing
Technology is identical, and details are not described herein.
Step 3, NVR equipment 1 are set as initial value (such as in ARP request message, by the hop count that ARP request message passes through
1), set the IP address of NVR equipment 1 for upper ring apparatus mark, by other all of the port except the P3 of port (port P1 and
Port P2) send the ARP request message.
Wherein, the minimum length of Ethernet length is 64 bytes, removes ether frame head and ether postamble, ether data portion
Minimum length be 46 bytes, and ARP request message does not use 46 whole bytes, and not used part is reserved field,
It is currently to be filled using 0.On this basis, it can increase ARP request message at the reserved field of ARP request message and pass through
Hop count field and upper ring apparatus identification field.The hop count field that the ARP request message passes through indicates what ARP request message passed through
Hop count, ring apparatus identification field indicates the unique identification that the ring headend equipment of the ARP request message is received outside ring on this.
In one example, the field that ARP request message includes successively includes following field: type of hardware from front to back
Field, protocol type field, hardware address length field, length of protocol address field, opcode field, sender's MAC Address
Field, sender's IP address field, Destination MAC address field, destination IP address field etc..On this basis, the present invention is implemented
In example, behind destination IP address field, the hop count field of ring apparatus identification field and ARP request message process in increase.
Wherein, for the ring headend equipment (such as NVR equipment 1) for receiving ARP request message outside ring, due to ARP
The hop count field of ring apparatus identification field and ARP request message process is not carried in request message, therefore, which exists
Increase upper ring apparatus identification field in the ARP request message and hop count field that ARP request message passes through, and by upper ring apparatus mark
The numerical value of character learning section is set as the IP address of NVR equipment 1, and sets the numerical value for the hop count field that ARP request message passes through to
1。
Wherein, the ring headend equipment of ARP request message is only received outside ring, it just can by the IP of this ring headend equipment
Location is added to upper ring apparatus identification field, and the ring headend equipment of ARP request message is received from ring, and not needing will be before this ring
The IP address of end equipment is added to upper ring apparatus identification field.For example, NVR equipment 1 is from port P3, (port P3 is ring lower end
Mouthful) on when receiving ARP request message, then the IP address of this NVR equipment 1 can be added to upper ring apparatus identification field, and
When receiving ARP request message from port P1 or port P2 (port P1 be ring upper port with port P2), then it will not incite somebody to action this
The IP address of NVR equipment 1 is added to upper ring apparatus identification field.
Wherein, the ring headend equipment of ARP request message is received outside ring, it can be by hop count word that ARP request message passes through
The numerical value of section is set as initial value (such as 1,2,3 numerical value), and the ring headend equipment of ARP request message is received from ring, meeting
The numerical value for the hop count field that ARP request message passes through is added 1.For example, NVR equipment 1 is from port P3, (port P3 is ring lower end
Mouthful) on when receiving ARP request message, then can set initial value for the numerical value for the hop count field that ARP request message passes through, and
It, then can be by ARP when receiving ARP request message from port P1 or port P2 (port P1 be ring upper port with port P2)
The numerical value for the hop count field that request message passes through adds 1.
Wherein, since ARP request message can be broadcasting packet, except NVR equipment 1 can be by port P3
Other all of the port (port P1 and port P2) send the ARP request message.
Step 4, each NVR equipment judge that this NVR is set when receiving from the ARP request message of other ring headend equipments
Whether standby be the first ring headend equipment for handling the ARP request message on ring.If it is, the ARP request message is directly abandoned,
And terminate the transmission flow of the ARP request message.If it is not, then ARP request message is passed through in the ARP request message
Hop count adds 1, and sends the ARP request message by other all of the port except receiving port, executes step 5 later.
In the embodiment of the present invention, each NVR equipment judges whether this NVR equipment is first processing ARP request message on ring
Ring headend equipment process, can include but is not limited to such as under type: each NVR equipment judges carrying in ARP request message
Upper ring apparatus identifies whether as the IP address of this NVR equipment；If so, determining that this NVR equipment is first processing ARP request on ring
The ring headend equipment of message；If not, determining that this NVR equipment is not the ring headend equipment of first processing ARP request message on ring.
For example, when NVR equipment 2 receives the ARP request message from NVR equipment 1 by port P1, upper ring apparatus mark
It is not the IP address of NVR equipment 2, the hop count that ARP request message passes through is revised as 2, ARP is sent by port P2 and port P3
Request message.When NVR equipment 3 receives the ARP request message from NVR equipment 2 by port P1, upper ring apparatus mark is not
The hop count that ARP request message passes through is revised as 3 by the IP address of NVR equipment 3, sends ARP request message by port P2.NVR
When equipment 4 receives the ARP request message from NVR equipment 3 by port P1, upper ring apparatus mark is not the IP of NVR equipment 4
The hop count that ARP request message passes through is revised as 4 by address, sends ARP request message by port P2.NVR equipment 5 passes through end
When mouth P1 receives the ARP request message from NVR equipment 4, upper ring apparatus mark is not the IP address of NVR equipment 5, by ARP
The hop count that request message passes through is revised as 5, sends ARP request message by port P2 and port P3.NVR equipment 1 passes through port
When P1 receives the ARP request message from NVR equipment 5, upper ring apparatus mark is the IP address of NVR equipment 1, abandons ARP and asks
Seek message.
For example, when NVR equipment 5 receives the ARP request message from NVR equipment 1 by port P2, upper ring apparatus mark
It is not the IP address of NVR equipment 5, the hop count that ARP request message passes through is revised as 2, ARP is sent by port P1 and port P3
Request message.When NVR equipment 4 receives the ARP request message from NVR equipment 5 by port P2, upper ring apparatus mark is not
The hop count that ARP request message passes through is revised as 3 by the IP address of NVR equipment 4, sends ARP request message by port P1.NVR
When equipment 3 receives the ARP request message from NVR equipment 4 by port P2, upper ring apparatus mark is not the IP of NVR equipment 3
The hop count that ARP request message passes through is revised as 4 by address, sends ARP request message by port P1.NVR equipment 2 passes through end
When mouth P2 receives the ARP request message from NVR equipment 3, upper ring apparatus mark is not the IP address of NVR equipment 2, by ARP
The hop count that request message passes through is revised as 5, sends ARP request message by port P1 and port P3.NVR equipment 1 passes through port
When P2 receives the ARP request message from NVR equipment 2, upper ring apparatus mark is the IP address of NVR equipment 1, abandons ARP and asks
Seek message.
In addition, client is when receiving the ARP request message from NVR equipment 5, due to the purpose of ARP request message
IP address is the IP address of this client, and therefore, client returns to arp response message, the biography of arp response message to NVR equipment 5
Defeated process illustrates in subsequent process.IPC equipment 2 can abandon this when receiving the ARP request message from NVR equipment 2
ARP request message.
Step 5, each NVR equipment parse the MAC Address and ARP of source device (i.e. IPC equipment 1) from ARP request message
The hop count that request message passes through, and safeguard MAC Address list item.
In the embodiment of the present invention, the process of each NVR plant maintenance MAC Address list item, can specifically include but be not limited to as
Under type: each NVR equipment judges the corresponding MAC Address list item of MAC Address that whether there is IPC equipment 1 in mac address table.Such as
Fruit is no, then the corresponding MAC Address list item of MAC Address that each NVR equipment records the IPC equipment 1 in mac address table, the MAC
Location list item include the receiving port of ARP request message, the MAC Address of the IPC equipment 1, ARP request message carry hop count.Such as
Fruit is the hop count that then hop count in the more already existing MAC Address list item of each NVR equipment and ARP request message carry；If
The former is less than or equal to the latter, then can retain already existing MAC Address list item in mac address table；After if the former is greater than
Port in already existing MAC Address list item can then be replaced with the receiving port of ARP request message by person, and will
Hop count in existing MAC Address list item replaces with the hop count of ARP request message carrying.
For example, NVR equipment 2 first passes through port P1 and receives the ARP request from NVR equipment 1 for for NVR equipment 2
Message receives the ARP request message from NVR equipment 3 by port P2 afterwards.Based on this, NVR equipment 2 is passing through port P1
When receiving ARP request message, MAC Address list item 1 can be generated in mac address table, which asks including ARP
The hop count (1) for asking the receiving port (port P1) of message, the MAC Address of IPC equipment 1, ARP request message to carry.Later, NVR
Equipment 2 is when receiving ARP request message by port P2, due to having existed MAC Address list item 1, MAC in mac address table
Hop count (1) in address list item 1 is less than the hop count (4) that ARP request message carries, therefore retains MAC Address list item 1.
For NVR equipment 2, NVR equipment 2 first passes through port P2 and receives the ARP request message from NVR equipment 3,
The ARP request message from NVR equipment 1 is received by port P1 afterwards.Based on this, NVR equipment 2 is received by port P2
When ARP request message, MAC Address list item 1 can be generated in mac address table, which includes ARP request message
Receiving port (port P2), the hop count (4) that carries of the MAC Address of IPC equipment 1, ARP request message.Later, NVR equipment 2 exists
When receiving ARP request message by port P1, due to having existed MAC Address list item 1, and the MAC Address in mac address table
Therefore hop count (4) in list item 1 is greater than the hop count (1) carried in ARP request message can will record in MAC Address list item 1
Port P2 be revised as the receiving port (port P1) of ARP request message, and the hop count (4) in MAC Address list item 1 is revised as
The hop count (1) that ARP request message carries.
For above-mentioned two situations, port P1, hop count 1 and IPC equipment 1 will record in final MAC Address list item 1
Corresponding relationship between MAC Address, that is, the data for being matched to the MAC Address of IPC equipment 1 (are sent to the number of IPC equipment 1
According to), it can be sent by port P1.
In another example for for NVR equipment 5, NVR equipment 5, which first passes through port P2 and receives the ARP from NVR equipment 1, is asked
Message is sought, the ARP request message from NVR equipment 4 is received by port P1 afterwards.Based on this, NVR equipment 5 is passing through port
When P2 receives ARP request message, MAC Address list item 1 can be generated in mac address table, which includes ARP
The hop count (1) that the receiving port (port P2) of request message, the MAC Address of IPC equipment 1, ARP request message carry.Later,
NVR equipment 5 is when receiving ARP request message by port P1, due to having existed MAC Address list item 1 in mac address table,
Hop count (1) in MAC Address list item 1 is less than the hop count (4) that ARP request message carries, therefore retains MAC Address list item 1.
For NVR equipment 5, NVR equipment 5 first passes through port P1 and receives the ARP request message from NVR equipment 4,
The ARP request message from NVR equipment 1 is received by port P2 afterwards.Based on this, NVR equipment 5 is received by port P1
When ARP request message, MAC Address list item 1 can be generated in mac address table, which includes ARP request message
Receiving port (port P1), the hop count (4) that carries of the MAC Address of IPC equipment 1, ARP request message.Later, NVR equipment 5 exists
When receiving ARP request message by port P2, due to having existed MAC Address list item 1, and the MAC Address in mac address table
Therefore hop count (4) in list item 1 is greater than the hop count (1) carried in ARP request message can will record in MAC Address list item 1
Port P1 be revised as the receiving port (port P2) of ARP request message, and the hop count (4) in MAC Address list item 1 is revised as
The hop count (1) that ARP request message carries.
For above-mentioned two situations, port P2, hop count 1 and IPC equipment 1 will record in final MAC Address list item 1
Corresponding relationship between MAC Address, that is, the data for being matched to the MAC Address of IPC equipment 1 (are sent to the number of IPC equipment 1
According to), it can be sent by port P2.
It is similar with above-mentioned processing for the processing of NVR equipment 3 and NVR equipment 4, it repeats no more.
In addition, VLAN mark, learning state, ageing time can also be recorded in the MAC Address list item of each NVR plant maintenance
Equal other information, maintenance process is same as the prior art, and details are not described herein.
Based on the MAC Address list item of each NVR plant maintenance, NVR equipment 5 is IPC equipment 1 sending target MAC (Media Access Control) address
When the data of MAC Address, MAC Address list item is corresponded to using the MAC Address of IPC equipment 1, can be sent data by port P2
IPC equipment 1 is sent the data to by port P3 to NVR equipment 1, and by NVR equipment 1, it is clear that the transmission path of the data is
The optimal path of NVR equipment 5 and NVR equipment 1.Similarly, NVR equipment 2 is sending the MAC that target MAC (Media Access Control) address is IPC equipment 1
When the data of location, MAC Address list item is corresponded to using the MAC Address of IPC equipment 1, NVR can be sent the data to by port P1
Equipment 1, and IPC equipment 1 is sent the data to by port P3 by NVR equipment 1, it is clear that the transmission path of the data is that NVR is set
For 2 and the optimal path of NVR equipment 1.With sending the MAC that target MAC (Media Access Control) address is IPC equipment 1 for NVR equipment 3/NVR equipment 4
The process of the data of location, details are not described herein.
Step 6, client return to arp response message, the source of the arp response message after receiving ARP request message
IP address is the IP address of client, and source MAC is the MAC Address of client, and purpose IP address is the IP of IPC equipment 1
(know) that target MAC (Media Access Control) address is the MAC Address (knowing from ARP request message) of IPC equipment 1 from ARP request message in location.
Step 7, NVR equipment 5 receive the arp response message from client by port P3, and from the arp response report
The MAC Address of client is parsed in text, and generates a MAC Address list item in mac address table, for example, the mac address table
Record has the MAC Address of port P3 and client in.Based on this MAC Address list item, NVR equipment 5 is with receiving purpose MAC
When location is the data of the MAC Address of client, the data can be sent by port P3.
Step 8, NVR equipment 5 inquire mac address table by the target MAC (Media Access Control) address of the arp response message, and based on inquiry
As a result, sending the arp response message from port P2.
Step 9, NVR equipment 1 receive the arp response message from NVR equipment 5 by port P1, and from the arp response
The MAC Address of client is parsed in message, and generates a MAC Address list item in mac address table, for example, the MAC Address
Record has the MAC Address of port P1 and client in list item.Based on this MAC Address list item, NVR equipment 1 is receiving purpose MAC
When address is the data of the MAC Address of client, the data can be sent by port P1.
Step 10, NVR equipment 1 inquire mac address table by the target MAC (Media Access Control) address of the arp response message, and based on inquiry
As a result, sending the arp response message to IPC equipment 1 from port P3.
Under another application scene, sent out with the lower client connected of NVR equipment 5 to the lower IPC equipment 1 connected of NVR equipment 1
Send ARP request message, for IPC equipment 1 returns to the process of arp response message to client, then process flow and above-mentioned steps
The process flow of 1- step 10 is similar, and after safeguarding MAC Address list item, video data can be sent to NVR by IPC equipment 1
Video data can be sent to NVR equipment 5 by port P1 by equipment 1, NVR equipment 1, and NVR equipment 5 can be incited somebody to action by port P3
Video data is sent to client, is finally completed the transmission of video data.
Based on inventive concept same as the above method, the embodiment of the present invention also provides a kind of transmitting device of data, answers
With the loop network on ring including multiple ring headend equipments, the transmitting device of the data is applied on ring headend equipment.Wherein,
The transmitting device of the data can also be realized by software realization by way of hardware or software and hardware combining.With soft
It as the device on a logical meaning, is read non-easy by the processor of the ring headend equipment where it for part is realized
Corresponding computer program instructions are formed in the property lost memory.For hardware view, as shown in figure 5, being proposed for the present invention
Data transmitting device where ring headend equipment a kind of hardware structure diagram, in addition to processor shown in fig. 5, non-volatile
Outside memory, ring headend equipment can also include other hardware, such as be responsible for forwarding chip, network interface, the memory of processing message
Deng；From hardware configuration, which is also possible to be distributed apparatus, may include multiple interface cards, so as to
The extension of hardware view progress Message processing.
As shown in fig. 6, the structure chart of the transmitting device for L data proposed by the present invention, the transmitting device tool of the data
Body includes: processing module 11, for when being received by first port from the address resolution message of other ring headend equipments,
The hop count that the MAC Address and the address resolution message that source device is parsed from the address resolution message pass through；Safeguard mould
Block 12, for safeguarding MAC Address list item using the first port, the MAC Address and the hop count；Sending module 13 is used
In when sending the data that target MAC (Media Access Control) address is the MAC Address, the MAC Address is inquired using the target MAC (Media Access Control) address
List item, and the data are sent by the MAC Address list item.
The maintenance module 12 is specifically used for safeguarding using the first port, the MAC Address and the hop count
During MAC Address list item, judge in mac address table with the presence or absence of the corresponding MAC Address list item of the MAC Address；If
It is no, then the corresponding MAC Address list item of the MAC Address is recorded in mac address table, the MAC Address list item includes described
Single port, the MAC Address and the hop count；If it is, hop count in more already existing MAC Address list item with it is described
Hop count；If the former is less than or equal to the latter, already existing MAC Address list item is retained in the mac address table；If the former
Greater than the latter, the port in already existing MAC Address list item is replaced with into the first port, and by already existing MAC
Hop count in address list item replaces with the hop count.
The processing module 11 is also used to receiving the address resolution from other ring headend equipments by first port
After message, judge whether the ring headend equipment is the first ring headend equipment for handling the address resolution message on ring；Such as
Fruit is then to abandon the address resolution message；If it is not, then with parsing the MAC of source device from the address resolution message
The hop count that location and the address resolution message pass through；
The processing module 11 is also used in MAC Address and the institute for parsing source device from the address resolution message
After the hop count for stating address resolution message process, in the address resolution message, by the jump of address resolution message process
Number plus 1；The sending module is also used to send the address resolution report by other all of the port except the first port
Text.
The processing module 11 is also used to receiving the address resolution message outside the ring by second port
When, the MAC Address of source device is parsed from the address resolution message；In the address resolution message, by the address
The hop count that analytic message passes through is set as initial value, and sets upper ring apparatus mark to unique mark of the ring headend equipment
Know；The maintenance module 12 is also used to utilize the second port, MAC Address maintenance MAC Address list item；The transmission
Module 13 is also used to send the address resolution message by other all of the port except the second port；
The processing module 11, specifically for judging whether the ring headend equipment is on the ring described in first processing
During the ring headend equipment of address resolution message, judge that the upper ring apparatus carried in the address resolution message identifies whether
For the unique identification of this ring headend equipment；If so, determining that the ring headend equipment is the first processing address on the ring
The ring headend equipment of analytic message；If it is not, then determining that the ring headend equipment is not the first processing address on the ring
The ring headend equipment of analytic message.
The address resolution message specifically includes: ARP request message；The loop network specifically includes: video monitoring system
The loop network of system；The ring headend equipment specifically includes: NVR equipment, IPC equipment, analog video camera equipment, encoder are set
Standby, decoder apparatus, digital video camcorder equipment.
Wherein, the modules of apparatus of the present invention can integrate in one, can also be deployed separately.Above-mentioned module can close
And be a module, multiple submodule can also be further split into.
Through the above description of the embodiments, those skilled in the art can be understood that the present invention can be by
Software adds the mode of required general hardware platform to realize, naturally it is also possible to which by hardware, but in many cases, the former is more
Good embodiment.Based on this understanding, technical solution of the present invention substantially in other words contributes to the prior art
Part can be embodied in the form of software products, which is stored in a storage medium, if including
Dry instruction is used so that a computer equipment (can be personal computer, server or the network equipment etc.) executes this hair
Method described in bright each embodiment.It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment,
Module or process in attached drawing are not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in embodiment can describe be divided according to embodiment
It is distributed in the device of embodiment, corresponding change can also be carried out and be located in one or more devices different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.The embodiments of the present invention
Serial number is for illustration only, does not represent the advantages or disadvantages of the embodiments.
Disclosed above is only several specific embodiments of the invention, and still, the present invention is not limited to this, any ability
What the technical staff in domain can think variation should all fall into protection scope of the present invention.
Claims (10)
- It include multiple ring headend equipments on the ring of the loop network 1. a kind of transmission method of data, is applied in loop network, It is characterized in that, the method is applied in ring headend equipment, which comprisesWhen being received by first port from the address resolution message of other ring headend equipments, from the address resolution message In parse source device MAC Address and the address resolution message pass through hop count；MAC Address list item is safeguarded using the first port, the MAC Address and the hop count；When sending the data that target MAC (Media Access Control) address is the MAC Address, with inquiring the MAC using the target MAC (Media Access Control) address Location list item, and the data are sent by the MAC Address list item；The method also includes: it is received by first port After address resolution message from other ring headend equipments, judge whether the ring headend equipment is first processing on the ring The ring headend equipment of the address resolution message；If it is, abandoning the address resolution message；If it is not, then executing from institute State the process for the hop count that the MAC Address that source device is parsed in address resolution message and the address resolution message pass through.
- 2. the method according to claim 1, wherein described utilize the first port, the MAC Address and institute The process for stating hop count maintenance MAC Address list item, specifically includes:Judge in mac address table with the presence or absence of the corresponding MAC Address list item of the MAC Address；If it is not, then recording the corresponding MAC Address list item of the MAC Address, the mac address table in the mac address table Item includes the first port, the MAC Address and the hop count；If it is, hop count and the hop count in more already existing MAC Address list item；After if the former is less than or equal to Person then retains already existing MAC Address list item in the mac address table；If the former is greater than the latter, will have existed MAC Address list item in port replace with the first port, and the hop count in already existing MAC Address list item is replaced For the hop count.
- 3. method according to claim 1 or 2, which is characterized in that the method also includes:The hop count that the MAC Address that source device is parsed from the address resolution message and the address resolution message pass through it Afterwards, in the address resolution message, the hop count that the address resolution message passes through is added 1, and by the first port it Outer other all of the port send the address resolution message.
- 4. according to the method described in claim 3, it is characterized in that, the method also includes:When receiving the address resolution message outside ring by second port, source is parsed from the address resolution message The MAC Address of equipment, and MAC Address list item is safeguarded using the second port, the MAC Address；In the address resolution report The hop count that the address resolution message passes through is set initial value by Wen Zhong, and before setting the ring for upper ring apparatus mark The unique identification of end equipment, and the address resolution message is sent by other all of the port except the second port；It is described to judge whether the ring headend equipment is the first ring headend equipment for handling the address resolution message on the ring Process, specifically include: judging that the upper ring apparatus carried in the address resolution message identifies whether as this ring headend equipment Unique identification；If it is, determining that the ring headend equipment is on the ring before the ring of the first processing address resolution message End equipment；If it is not, then determining that the ring headend equipment is not on the ring before the ring of the first processing address resolution message End equipment.
- 5. method according to claim 1 or 2, which is characterized in thatThe address resolution message specifically includes: ARP request message；The loop network specifically includes: video monitoring system Loop network；The ring headend equipment specifically includes: NVR equipment, IPC equipment, analog video camera equipment, encoder device, solution Code device equipment, digital video camcorder equipment.
- It include multiple ring headend equipments on the ring of the loop network 6. a kind of transmitting device of data, is applied in loop network, It is characterized in that, described device is applied in ring headend equipment, described device includes:Processing module, for when being received by first port from the address resolution message of other ring headend equipments, from institute State the hop count that the MAC Address that source device is parsed in address resolution message and the address resolution message pass through；The processing mould Block is also used to after receiving the address resolution message from other ring headend equipments by first port, judges the ring Whether headend equipment is the first ring headend equipment for handling the address resolution message on ring；If it is, abandoning the address Analytic message；If it is not, then parsing the MAC Address and the address resolution message of source device from the address resolution message The hop count of process；Maintenance module, for safeguarding MAC Address list item using the first port, the MAC Address and the hop count；Sending module, for being looked into using the target MAC (Media Access Control) address when sending the data that target MAC (Media Access Control) address is the MAC Address The MAC Address list item is ask, and the data are sent by the MAC Address list item.
- 7. device according to claim 6, which is characterized in thatThe maintenance module is specifically used for safeguarding MAC Address using the first port, the MAC Address and the hop count During list item, judge in mac address table with the presence or absence of the corresponding MAC Address list item of the MAC Address；If it is not, then Record the corresponding MAC Address list item of the MAC Address in mac address table, the MAC Address list item include the first port, The MAC Address and the hop count；If it is, hop count and the hop count in more already existing MAC Address list item；Such as The former is less than or equal to the latter to fruit, and already existing MAC Address list item is retained in the mac address table；After if the former is greater than Port in already existing MAC Address list item is replaced with the first port by person, and by already existing mac address table Hop count in replaces with the hop count.
- 8. device according to claim 6 or 7, which is characterized in thatThe processing module is also used in the MAC Address for parsing source device from the address resolution message and the address After the hop count that analytic message passes through, in the address resolution message, the hop count that the address resolution message passes through is added 1； The sending module is also used to send the address resolution message by other all of the port except the first port.
- 9. device according to claim 8, which is characterized in thatThe processing module is also used to when receiving the address resolution message outside ring by second port, from describedly The MAC Address of source device is parsed in the analytic message of location；In the address resolution message, the address resolution message is passed through Hop count be set as initial value, and set upper ring apparatus mark to the unique identification of the ring headend equipment；The maintenance mould Block is also used to utilize the second port, MAC Address maintenance MAC Address list item；The sending module is also used to pass through Other all of the port except the second port send the address resolution message；The processing module, specifically for judging whether the ring headend equipment is that the first processing address solves on the ring During the ring headend equipment for analysing message, judge that the upper ring apparatus carried in the address resolution message identifies whether as this ring The unique identification of headend equipment；If it is, determining that the ring headend equipment is the first processing address resolution on the ring The ring headend equipment of message；If it is not, then determining that the ring headend equipment is not the first processing address resolution on the ring The ring headend equipment of message.
- 10. device according to claim 6 or 7, which is characterized in thatThe address resolution message specifically includes: ARP request message；The loop network specifically includes: video monitoring system Loop network；The ring headend equipment specifically includes: NVR equipment, IPC equipment, analog video camera equipment, encoder device, solution Code device equipment, digital video camcorder equipment.
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| CN106817439A (en) * | 2017-02-10 | 2017-06-09 | 武汉卓威视讯科技有限公司 | A kind of method for obtaining MAC Address |
| CN111903097B (en) * | 2018-03-30 | 2022-02-22 | 三菱电机株式会社 | Transmission device, transmission method, and computer-readable storage medium |
| CN113365296B (en) * | 2020-03-05 | 2022-11-08 | 成都鼎桥通信技术有限公司 | Network configuration method and equipment of communication central station |
| CN111835859B (en) * | 2020-07-20 | 2022-11-15 | 安徽华速达电子科技有限公司 | Method for operating local area network equipment controller in cross-network segment mode and intelligent optical network equipment |
| CN114401324B (en) * | 2021-12-30 | 2024-03-01 | 华为技术有限公司 | Message forwarding method, network equipment and system |
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| CN101562614A (en) * | 2009-05-26 | 2009-10-21 | 北京星网锐捷网络技术有限公司 | Method, system and exchange equipment for preventing attacks in Ethernet ring network |
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