CN103763195B - A kind of method and device of transmitting message - Google Patents
A kind of method and device of transmitting message Download PDFInfo
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- CN103763195B CN103763195B CN201410032249.0A CN201410032249A CN103763195B CN 103763195 B CN103763195 B CN 103763195B CN 201410032249 A CN201410032249 A CN 201410032249A CN 103763195 B CN103763195 B CN 103763195B
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Abstract
A kind of method and device of transmitting message of the embodiment of the present invention, is related to the communications field, the shortage further to alleviate IPv4 addresses.Methods described, including：The IP address and mac address information of purpose terminal are obtained by server；Determine whether the IP address of purpose terminal is identical with the IP address of first terminal；When first terminal determines that the IP address of purpose terminal is identical with the IP address of first terminal, then according to the mac address information of purpose terminal, it is determined that whether there is the occurrence that the mac address information with purpose terminal matches in the MAC forward tables stored；If it is determined that there is occurrence, then it regard the MAC Address of first terminal as the source MAC in heading data and source host MAC Address, it regard the MAC Address of purpose terminal as the target MAC (Media Access Control) address in heading data and destination host MAC Address, sent added in the heading data of message, and by message to interchanger.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of method and device of transmitting message.
Background technology
With the fast development of computer, communication and network technology, internet has and can not replaced in every field
Effect.Based on IPv4 (Internet Protocol version 4, internet protocol version 4) existing internet, it is used for
The network address of mark global network equipment and terminal device there are about 4,000,000,000, distribute substantially at present totally.How to tackle
The shortage of IPv4 addresses, it has also become the problem of industry is increasingly paid close attention to.
In the prior art, in order to alleviate the shortage of IPV4 addresses, all terminals in a subnet are being accessed because of spy
During net, using a public ip address, all terminals in subnet can be distinguished by private IP address.In the prior art may be used
It is publicly-owned to be converted to private IP address using NAT (Network Address Translation, network address translation) technology
IP address accesses internet.But with the fast development of computer, communication and network technology, the terminal included in a subnet
Quick increase, because IP address is made up of 32 bits, identifies each terminal using private IP address in subnet, may lead
Cause subnet in private IP address can not meet whole terminals in subnet so that need to redistribute at least one it is publicly-owned
IPV4 addresses, so as to form at least one new subnet.So, when private IP address is not enough in a subnet, also need point
With a publicly-owned IPV4 address, so that alleviating the pressure increase of IPV4 Address Run Shorts.
The content of the invention
Embodiments of the invention provide a kind of method and device of transmitting message, further to alleviate the short of IPv4 addresses
Lack.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
In a first aspect, the embodiments of the invention provide a kind of method of transmitting message, including：First terminal passes through server
The Protocol IP address and medium access control mac address information interconnected between the network for obtaining purpose terminal；The first terminal
Determine whether the IP address of the purpose terminal is identical with the IP address of the first terminal；Determined in the first terminal described
When the IP address of purpose terminal is identical with the IP address of the first terminal, then the first terminal is according to the purpose terminal
Mac address information, it is determined that whether having what the mac address information with the purpose terminal matched in the MAC forward tables stored
Occurrence；If it is determined that there is occurrence, then the first terminal using the MAC Address of the first terminal as in heading data
Source MAC and source host MAC Address, using the MAC Address of the purpose terminal as the purpose MAC in heading data
Location and destination host MAC Address, send to interchanger added in the heading data of message, and by the message, to cause
Target MAC (Media Access Control) address of the interchanger in the heading data forwards the message；The message includes：Heading number
According to and valid data；The heading data include：Source IP address, purpose IP address, source host MAC Address, destination host MAC
Address, source MAC and target MAC (Media Access Control) address.
Second aspect, the embodiments of the invention provide a kind of method of transmitting message, including：Router receives network side hair
The message sent；The message includes heading data and valid data；The heading data include：Interconnected between source network
Protocol IP address, purpose IP address, source host medium access control MAC Address, destination host MAC Address, source MAC and mesh
MAC Address；The router parses the message, obtains the purpose IP address of the message；The router determines described
Whether purpose IP address is identical with the IP address of the router；If the router determines the purpose IP address and the road
Identical by the IP address of device, then the destination host MAC Address in the heading data of the message, updates the message
Target MAC (Media Access Control) address, and the message that have updated target MAC (Media Access Control) address is sent to interchanger, to cause the interchanger according to described
Target MAC (Media Access Control) address in heading data forwards the message.
The third aspect, the embodiments of the invention provide a kind of terminal, including：Acquiring unit, for being obtained by server
The Protocol IP address and medium access control mac address information interconnected between the network of purpose terminal；Determining unit, for determining
Whether the IP address for the purpose terminal that the acquiring unit is obtained is identical with the IP address of the terminal；It is described to determine list
Member, is additionally operable to when the IP address for determining the purpose terminal is identical with the IP address of the first terminal, then according to described
The mac address information of purpose terminal, it is determined that whether there is the MAC Address letter with the purpose terminal in the MAC forward tables stored
The occurrence of manner of breathing matching；Processing unit, for when the determining unit has determined occurrence, by the MAC of the terminal
Address regard the MAC Address of the purpose terminal as report as the source MAC in heading data and source host MAC Address
Target MAC (Media Access Control) address and destination host MAC Address in literary head data, added in the heading data of message, and by the report
Text is sent to interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message；
The message includes：Heading data and valid data；The heading data include：Source IP address, purpose IP address, source master
Machine MAC Address, destination host MAC Address, source MAC and target MAC (Media Access Control) address.
Fourth aspect, the embodiments of the invention provide a kind of router, including：Receiving unit, for receiving network side hair
The message sent；The message includes heading data and valid data；The heading data include：Interconnected between source network
Protocol IP address, purpose IP address, source host medium access control MAC Address, destination host MAC Address, source MAC and mesh
MAC Address；Resolution unit, for parsing the message that the receiving unit is received, with obtaining the purpose IP of the message
Location；Determining unit, for determine the purpose IP address that the resolution unit obtains whether the IP address with the router
It is identical；Processing unit, for determining that the purpose IP address is identical with the IP address of the router in the determining unit
When, then the destination host MAC Address in the heading data of the message, updates the target MAC (Media Access Control) address of the message, and
The message that have updated target MAC (Media Access Control) address is sent to interchanger, to cause the interchanger according in the heading data
Target MAC (Media Access Control) address forwards the message.
The embodiments of the invention provide a kind of method and device of transmitting message, first terminal is obtained by server
After the IP address and mac address information of purpose terminal, determine this purpose terminal IP address whether the IP address with first terminal
It is identical；When the IP address for determining purpose terminal is identical with the IP address of first terminal, then according to the MAC of purpose terminal
Location, determines whether occurrence, however, it is determined that going out has occurrence in the MAC forward tables stored, then by the MAC of first terminal
Location regard the MAC Address of the purpose terminal as message as the source MAC in heading data and source host MAC Address
Target MAC (Media Access Control) address and destination host MAC Address in head data, added in the heading data of message, and by the message
Send to interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.This
Sample, when all terminals are respectively provided with identical IP address in same subnet, passes through what is added in the heading data of message
Destination host MAC Address, can indicate this message being forwarded in which terminal, so as in same subnet, use MAC
Address identifies terminal, in different subnets, by IP address and MAC Address common ID terminal, and then relative to existing skill
Private IP address in art can identify more terminals in subnet, it is possible to achieve further alleviate the shortage of IPv4 addresses
Purpose.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of method schematic diagram of transmitting message provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation of message provided in an embodiment of the present invention；
Fig. 3 is the method schematic diagram of another transmitting message provided in an embodiment of the present invention；
Fig. 4 is the method schematic diagram of another transmitting message provided in an embodiment of the present invention；
Fig. 5 is the method schematic diagram of another transmitting message provided in an embodiment of the present invention；
Fig. 6 is a kind of structural representation of terminal provided in an embodiment of the present invention；
Fig. 7 is a kind of structural representation of router provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiments of the invention provide a kind of method of transmitting message, as shown in figure 1, including：
101st, first terminal obtains the IP address and mac address information of purpose terminal by server.
Specifically, first terminal can obtain purpose terminal by DNS (Domain Name System, domain name system)
(Media Access Control, medium is visited by IP (agreement interconnected between Internet Protocol, network) addresses and MAC
Ask control) address information.
First terminal can send request message to dns server, to ask the IP address and MAC Address of purpose terminal to be believed
Breath.Dns server is after this request message is received, the IP address and MAC of purpose terminal are carried to first terminal return
The response message of location information, first terminal can know the IP address and mac address information of purpose terminal by this response message.
102nd, the first terminal determine the purpose terminal IP address whether the IP address phase with the first terminal
Together.
Specifically, first terminal is after the IP address of purpose terminal is obtained, determine this purpose terminal IP address whether
It is identical with the IP address of itself, as determine purpose terminal whether with first terminal in same subnet.
It should be noted that, the subnet refers to that IP address is identical, but the network that the different node of MAC Address is constituted.
103rd, determine that the IP address of the purpose terminal is identical with the IP address of the first terminal in the first terminal
When, then whether the first terminal is according to the mac address information of the purpose terminal, it is determined that having in the MAC forward tables stored
The occurrence matched with the mac address information of the purpose terminal.
, can be with specifically, when first terminal determines that the IP address of purpose terminal is identical with the IP address of first terminal
According to the mac address information of the purpose terminal of acquisition, the MAC forward tables stored, the MAC forward tables to determine to store are searched
In whether have the occurrence that the mac address information with the purpose terminal matches.
104th, if it is determined that there is occurrence, then the first terminal regard the MAC Address of the first terminal as heading
Source MAC and source host MAC Address in data, regard the MAC Address of the purpose terminal as the mesh in heading data
MAC Address and destination host MAC Address, sent added in the heading data of message, and by the message to interchanger,
To cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.
Wherein, the message includes：Heading data and valid data.The heading data include：Source IP address, mesh
IP address, source host MAC Address, destination host MAC Address, source MAC and target MAC (Media Access Control) address.
Further, the source host MAC Address refers to the MAC Address for sending the terminal of the message.The purpose master
Machine MAC Address refers to the MAC Address of the corresponding terminal of purpose IP address.The source MAC refers in subnet that entrance is route
The MAC Address of device/main frame.The target MAC (Media Access Control) address refers in subnet, the MAC Address of egress router/main frame.The subnet
Refer to that IP address is identical, but the network that the different node of MAC Address is constituted.
If specifically, first terminal finds the MAC Address letter with the purpose terminal in the MAC forward tables stored
The occurrence of manner of breathing matching, then regard the MAC Address of first terminal as the source MAC in heading data and source host MAC
Address, using the MAC Address of the purpose terminal as the target MAC (Media Access Control) address in heading data and destination host MAC Address, adds
It is that Ethernet stem is added in message, so as to generate ether network packet in the heading data for adding to message.
It should be noted that in the embodiment of the present invention, ether network packet includes Ethernet stem and data packet messages part.
Wherein, Ethernet stem includes：Source host MAC Address, destination host MAC Address, source MAC and target MAC (Media Access Control) address, such as scheme
Shown in 2.
First terminal is added in message by Ethernet stem, as generates after ether network packet, this message is sent
To its corresponding interchanger, so as to target MAC (Media Access Control) address of the interchanger according to the Ethernet stem of this message, this message is forwarded to
Purpose terminal.
It should be noted that in all embodiments of the invention, the IP address of the equipment in same subnet can be with identical.
And in a subnet, only one of which router, and communicated by this router with outer net.
The embodiments of the invention provide a kind of method of transmitting message, first terminal is obtaining purpose end by server
After the IP address and mac address information at end, determine whether the IP address of this purpose terminal is identical with the IP address of first terminal；
When determining that the IP address of purpose terminal is identical with the IP address of first terminal, then according to the MAC Address of purpose terminal, depositing
Occurrence is determined whether in the MAC forward tables of storage, however, it is determined that going out has occurrence, then regard the MAC Address of first terminal as report
Source MAC and source host MAC Address in literary head data, using the MAC Address of the purpose terminal as in heading data
Target MAC (Media Access Control) address and destination host MAC Address, added in the heading data of message, and by the message send best friend
Change planes, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.So, same
When all terminals are respectively provided with identical IP address in one subnet, pass through the destination host added in the heading data of message
MAC Address, can indicate this message being forwarded in which terminal, so as in same subnet, be identified with MAC Address
Terminal, in different subnets, by IP address and MAC Address common ID terminal, and then relative to private of the prior art
There is IP address to identify more terminals in subnet, it is possible to achieve further to alleviate the short purpose of IPv4 addresses.
The embodiments of the invention provide a kind of method of transmitting message, as shown in figure 3, including：
301st, router receives the message that network side is sent.
Wherein, the message includes heading data and valid data.The heading data include：Between source network mutually
Protocol IP address even, purpose IP address, source host medium access control MAC Address, destination host MAC Address, source MAC
And target MAC (Media Access Control) address.
Further, the source host MAC Address refers to the MAC Address for sending the terminal of the message.The purpose master
Machine MAC Address refers to the MAC Address of the corresponding terminal of purpose IP address.The source MAC refers in subnet that entrance is route
The MAC Address of device/main frame.The target MAC (Media Access Control) address refers in subnet, the MAC Address of egress router/main frame.The subnet
Refer to that IP address is identical, but the network that the different node of MAC Address is constituted.
302nd, the router parses the message, obtains the purpose IP address of the message.
Specifically, router is received after the message of network side transmission, the heading data to this message are parsed, and are obtained
The address information in the heading data of this message is taken, source IP address, purpose IP address, source host MAC Address, mesh is as obtained
Host MAC address, source MAC and target MAC (Media Access Control) address.
303rd, the router determines whether the purpose IP address is identical with the IP address of the router.
Specifically, router is after purpose IP address is parsed, the purpose IP address and the IP address of itself obtained is detected
It is whether identical, as determine the purpose terminal of this message whether in the subnet where router.
If router determines that purpose IP address and the IP address of the router are differed, illustrate the purpose of this message
Terminal is not in the subnet where router, and router will search routing table according to purpose IP address, so that this message be forwarded
Into other subnets.
If the 304, the router determines that the purpose IP address is identical with the IP address of the router, according to described
Destination host MAC Address in the heading data of message, updates the target MAC (Media Access Control) address of the message, and will have updated purpose
The message of MAC Address is sent to interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to turn
Send out message described.
If specifically, router determines that the purpose IP address is identical with the IP address of the router, illustrating that this is reported
The purpose terminal of text is in the subnet where router, that is to say, that the IP address of purpose terminal and the IP address phase of router
Together.Now, the target MAC (Media Access Control) address of this message is revised as parsing the destination host of the heading data acquisition of this message by router
MAC Address, as modification for purpose terminal MAC Address, so as to have updated the target MAC (Media Access Control) address in heading data.Road
The message after renewal is sent into the corresponding interchanger into subnet by device, so as to interchanger by this message according to heading data
In amended target MAC (Media Access Control) address, be forwarded to purpose terminal.So, in a subnet all devices share an IP
During address, terminal can be identified by MAC Address, so as to by adding terminal in the heading data of message
MAC Address, the purpose terminal of identification message, realizes the transmission of message.MAC Address can be in subnet relative to private IP address
More terminals are identified, can further alleviate the shortage of IPv4 addresses.
The embodiments of the invention provide a kind of method of transmitting message, router is receiving the message of network side transmission
Afterwards, this message is parsed, purpose IP address is obtained.It is determined that whether the purpose IP address obtained is identical with the IP address of itself, if phase
Together, the destination host MAC Address in the heading data of the message, updates the mesh in the heading data of the message
MAC Address, and the message that have updated target MAC (Media Access Control) address is sent to interchanger, so that this interchanger is according to heading data
In target MAC (Media Access Control) address forward the packet to purpose terminal.So, all terminals are respectively provided with identical IP in same subnet
During address, by the destination host MAC Address added in the heading data of message, can indicate which this message is forwarded to
In individual terminal, so as in same subnet, terminal is identified with MAC Address, in different subnets, by IP address and
MAC Address common ID terminal, and then can be identified relative to private IP address of the prior art in subnet more
Terminal, it is possible to achieve further alleviate the short purpose of IPv4 addresses.
The embodiments of the invention provide a kind of method of transmitting message, including：
401st, first terminal obtains the IP address and mac address information of purpose terminal by server.
Specifically, with reference to step 101, will not be repeated here.
402nd, the first terminal determine the purpose terminal IP address whether the IP address phase with the first terminal
Together.
Specifically, with reference to step 102, will not be repeated here.
It should be noted that the step of result difference of the first terminal according to determination, execution is different, if first terminal is determined
The IP address for going out purpose terminal is identical with the IP address of the first terminal, then perform step 403a-404a1,406-408 or
Person, performs step 403a-405a2,406-408, as shown in Figure 4.If first terminal determines IP address and the institute of purpose terminal
The IP address for stating first terminal is differed, then performs step 403b-404b, 406-408,409b-418b, as shown in Figure 5.
403a, in the first terminal determine that the IP address of the purpose terminal is identical with the IP address of the first terminal
When, then whether the first terminal is according to the mac address information of the purpose terminal, it is determined that having in the MAC forward tables stored
The occurrence matched with the mac address information of the purpose terminal.
Specifically, with reference to step 103, will not be repeated here.
It should be noted that being determined whether and the purpose terminal in the MAC forward tables stored according to first terminal
The result of occurrence that matches of mac address information it is different, it is different the step of following execution, if first terminal has been determined
With item, then step 404a1 is performed.If first terminal determines no occurrence, step 404a2-405a2 is performed.
403b, in the first terminal determine the IP address of the IP address of the purpose terminal and the first terminal not phase
Meanwhile, then the first terminal determines the mac address information of the first router in the MAC forward tables stored.
Wherein, during the first router is the subnet where the first terminal, forward the packet to other subnets
Router.
Specifically, when first terminal determines that the IP address of purpose terminal is different from the IP address of itself, then illustrating mesh
Terminal and first terminal not in same subnet.Now, first terminal needs message to be sent by the first router to it
In his subnet, so, first terminal searches the MAC forward tables stored, and the first via is determined in the MAC forward tables stored
By the mac address information of device.
404a1, if it is determined that there is occurrence, then the first terminal regard the MAC Address of the first terminal as message
Source MAC and source host MAC Address in head data, using the MAC Address of the purpose terminal as in heading data
Target MAC (Media Access Control) address and destination host MAC Address, send to exchange added in the heading data of message, and by the message
Machine, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.
Specifically, referring to step 104, it will not be repeated here.
404a2, if it is determined that without occurrence, then the first terminal broadcasts MAC request messages where it in subnet.
Wherein, the mac address information of the purpose terminal is carried in the MAC request messages.
Specifically, MAC Address phase of the first terminal in the MAC forward tables stored are determined not with purpose terminal
During the occurrence matched somebody with somebody, the subnet broadcast where to it carries the MAC request messages of the MAC Address of purpose terminal, to cause son
Other equipment in net can parse the purpose terminal that is carried in MAC request messages after MAC request messages are received
MAC Address, so that it is determined that whether the MAC Address for going out this purpose terminal is the mac address information of itself, if the MAC of itself
Location information, then can return to MAC response messages to first terminal.If not the mac address information of itself, then abandon this message,
Any response is not made.
If first terminal is not received by the MAC response messages that miscellaneous equipment is returned in subnet, illustrate in this subnet
Without this purpose terminal, then by packet loss.
404b, the first terminal using the MAC Address of the first terminal as the source MAC in heading data and
Source host MAC Address, regard the MAC Address of the purpose terminal as the destination host MAC Address in heading data；By first
The MAC Address of router is as the target MAC (Media Access Control) address in heading data, added in the heading data of message, will be described
Message is sent to the interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward institute
State message.
Specifically, first terminal is after the mac address information of the first router is determined, by the MAC Address of first terminal
It is used as the source MAC in heading data and source host MAC Address.Due to that need to forward the packet to purpose terminal, so will
The MAC Address of purpose terminal is used as the destination host MAC Address in heading data.Due to that this need to be reported by the first router
Text is forwarded to other subnets, so regarding the MAC Address of the first router as the target MAC (Media Access Control) address in heading data.As
Ethernet stem is added in message, so as to generate ether network packet.First terminal will with the addition of the message of Ethernet stem
Interchanger is forwarded to, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.
It should be noted that in heading data, it is determined that after source host MAC Address and destination host MAC Address, turning
Transmit messages during text, source host MAC Address and destination host MAC Address are constant, source MAC and target MAC (Media Access Control) address with
The forwarding of message, thus it is possible to vary.
If 405a2, the first terminal receive MAC response messages, the first terminal updates the MAC stored and turned
Deliver, and using the MAC Address of the first terminal as the source MAC in heading data and source host MAC Address, by institute
The MAC Address of purpose terminal is stated as the target MAC (Media Access Control) address in heading data and destination host MAC Address, added to message
Heading data in, and the message is sent to interchanger, to cause the interchanger according in the heading data
Target MAC (Media Access Control) address forward the message.
If specifically, first terminal receives the MAC response messages that other equipment is returned in subnet, illustration purpose terminal
With first terminal in same subnet.Purpose terminal is after the MAC request messages of first terminal transmission are received, to first eventually
End returns to MAC response messages.First terminal is received after MAC response messages, can be updated according to the MAC response messages received
The MAC table stored, is to store the MAC Address of purpose terminal and corresponding port information into the MAC table stored.
After first terminal has updated MAC forward tables, using the MAC Address of the first terminal as in heading data
Source MAC and source host MAC Address, regard the MAC Address of the purpose terminal as the target MAC (Media Access Control) address in heading data
And destination host MAC Address, it is that Ethernet stem is added in message added in the heading data of message, so that
Generate ether network packet.The message that with the addition of Ethernet stem is forwarded to interchanger by first terminal.
406th, interchanger receives the message that first terminal is sent, and parses the heading data of this message, obtains the report
The target MAC (Media Access Control) address information of text.
Specifically, interchanger parses the heading data of this message, so as to obtain after the message that first terminal is sent is received
Take the target MAC (Media Access Control) address information in the heading data of this message.
407th, interchanger determines the corresponding port of the target MAC (Media Access Control) address according to the target MAC (Media Access Control) address information of the message
Number information.
Specifically, interchanger is after the target MAC (Media Access Control) address information in parsing heading data, according to target MAC (Media Access Control) address
The MAC forward tables stored are searched, when finding occurrence, can determine that this target MAC (Media Access Control) address is corresponding in occurrence
Port number information.
408th, interchanger E-Packets according to the corresponding port number information of the target MAC (Media Access Control) address of determination.
Specifically, if this target MAC (Media Access Control) address is the MAC Address of purpose terminal, interchanger can be according to corresponding port
Number information, purpose terminal is forwarded to by this message.
If this target MAC (Media Access Control) address be the first router MAC Address, interchanger can according to corresponding port number information,
This message is forwarded to the first router.
The message that 409b, the first router desampler are sent, and the message is parsed, obtain the message
Purpose IP address information.
410b, the first router determine the purpose IP address information pair according to the purpose IP address information of the message
The port number information answered.
Specifically, the first router is after the purpose IP address in getting the heading data of message, according to this purpose
IP address searches routing table, if finding the list item matched in the routing table, this purpose can be determined in this list item
The corresponding port number information of IP address.It can as determine this message is forwarded to other by the first router by which port
In subnet.
411b, the first router are forwarded described according to the corresponding port number information of the purpose IP address information of determination
Message.
412b, the second router receive the message that network side is sent.
The message includes heading data and valid data；The heading data include：Source IP address, purpose IP
Location, source host MAC Address, destination host MAC Address, source MAC and target MAC (Media Access Control) address.
Specifically, referring to step 301, it will not be repeated here.
413b, the second router parse the message, obtain the purpose IP address of the message.
Specifically, referring to step 302, it will not be repeated here.
414b, the second router determine whether the purpose IP address is identical with the IP address of the router.
Specifically, referring to step 303, it will not be repeated here.
Further, if the second router determines that purpose IP address and the IP address of the router are differed, illustrate
The purpose terminal of this message is not with the second router in same subnet, and now, the second router can be according to this purpose IP
The routing table of itself is searched, can be in this table when finding the list item matched with routing table purpose IP address in the routing table
The corresponding port number information of this purpose IP address is determined in.It can as determine that the first router will by which port
This message is forwarded in other subnets, and according to the corresponding port number information of this purpose IP address determined, forwards this message.
415b, the second router are when it is determined that the purpose IP address is identical with the IP address of the router, according to institute
State the destination host MAC Address in the heading data of message, with updating purpose MAC in the heading data of the message
Location, and the message that have updated target MAC (Media Access Control) address is sent to the first interchanger.
Specifically, referring to step 304, it will not be repeated here.
416b, the first interchanger receive the message that the second router is sent, and parse the heading data of this message, obtain
The target MAC (Media Access Control) address information of the message.
Specifically, the first interchanger parses the heading data of this message after the message that the second router is sent is received,
The target MAC (Media Access Control) address information in heading data so as to obtain this message.
417b, the first interchanger determine the target MAC (Media Access Control) address correspondence according to the target MAC (Media Access Control) address information of the message
Port number information.
Specifically, the first interchanger is after the target MAC (Media Access Control) address information in parsing heading data, according to purpose MAC
The MAC forward tables that address search has been stored, when finding occurrence, can determine this target MAC (Media Access Control) address pair in occurrence
The port number information answered.
418b, the first interchanger E-Packet according to the corresponding port number information of the target MAC (Media Access Control) address of determination.
Specifically, if the first interchanger is the interchanger that purpose terminal is connected, the first interchanger is it is determined that exit port is believed
After breath, this message can be forwarded to purpose terminal with corresponding ports.
First interchanger is not the interchanger of purpose terminal connection, then the first interchanger is according to the port number information determined
Forward this message so that other interchangers being connected with purpose terminal that this message is forwarded in subnet, with cause other with
This message can be forwarded to purpose terminal by the connected interchanger of purpose terminal according to the target MAC (Media Access Control) address information of message.
It should be noted that in all embodiments of the invention, the end in subnet is identified by MAC Address in subnet
End, so can determine purpose terminal according to the target MAC (Media Access Control) address in heading data, so as to forward the packet whole to purpose
End.Because MAC Address is made up of 48 bits, it can be identified for that out more relative to private IP address of the prior art
Terminal, so as to increase the terminal number in a subnet.When private IP address is not enough in a subnet, it can pass through
Terminal in MAC Address mark subnet, without redistributing public ip address, can further alleviate IPV4 shortage.
Further, identifying multiple terminals in the terminal in subnet, same subnet by MAC Address can carry to outer net
For same application service, without taking TCP port number, relative to NAT (Network Address Translation, net
Network address conversion) technology, it is more convenient, reduces the responsible degree of management.
The embodiments of the invention provide a kind of method of transmitting message, first terminal is obtaining purpose end by server
After the IP address and mac address information at end, determine whether the IP address of this purpose terminal is identical with the IP address of first terminal；
When determining that the IP address of purpose terminal is identical with the IP address of first terminal, then according to the MAC Address of purpose terminal, depositing
Occurrence is determined whether in the MAC forward tables of storage, however, it is determined that going out has occurrence, then regard the MAC Address of first terminal as report
Source MAC and source host MAC Address in literary head data, using the MAC Address of the purpose terminal as in heading data
Target MAC (Media Access Control) address and destination host MAC Address, added in the heading data of message, and by the message send best friend
Change planes, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.Determining mesh
The IP address of terminal and the IP address of first terminal when differing, then the mac address information of the first router is obtained, so that will
The MAC Address of first terminal is as the source MAC in heading data and source host MAC Address, by the purpose terminal
MAC Address regard the MAC Address of the first router as heading data as the destination host MAC Address in heading data
In target MAC (Media Access Control) address, sent added in the heading data of message, and by the message to interchanger, to cause purpose
The router of subnet where terminal is after message is received, when determining that the IP address of outgoing packet is identical with the IP of router, will
Target MAC (Media Access Control) address is updated to the MAC Address of destination host, so that this message is forwarded into purpose terminal.So, in same height
When all terminals are respectively provided with identical IP address in net, by the destination host MAC that is added in the heading data of message
Location, can indicate this message being forwarded in which terminal, so as to which in same subnet, terminal is identified with MAC Address,
In different subnets, by IP address and MAC Address common ID terminal, and then relative to private ip of the prior art
Location can identify more terminals in subnet, it is possible to achieve further alleviate the short purpose of IPv4 addresses.
The embodiments of the invention provide a kind of terminal, as shown in fig. 6, including：
The Protocol IP address interconnected between acquiring unit 601, the network for obtaining purpose terminal by server and Jie
Matter access control MAC addresses information.
Determining unit 602, for determine the purpose terminal that the acquiring unit 601 is obtained IP address whether with institute
The IP address for stating terminal is identical.
Determining unit 602, is additionally operable in the IP address and the IP address of the first terminal for determining the purpose terminal
When identical, then according to the mac address information of the purpose terminal, it is determined that whether having in the MAC forward tables stored and the mesh
Terminal the occurrence that matches of mac address information.
Processing unit 603, for when the determining unit 602 has determined occurrence, by the MAC Address of the terminal
As the source MAC in heading data and source host MAC Address, the MAC Address of the purpose terminal is regard as heading
Target MAC (Media Access Control) address and destination host MAC Address in data, send out added in the heading data of message, and by the message
Interchanger is delivered to, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.
Wherein, the message includes：Heading data and valid data.The heading data include：Source IP address, mesh
IP address, source host MAC Address, destination host MAC Address, source MAC and target MAC (Media Access Control) address.
Further, the processing unit 603, be additionally operable to the determining unit 602 determine there is no occurrence when,
Broadcast MAC request messages in subnet where the terminal.
Wherein, the mac address information of the purpose terminal is carried in the MAC request messages.
The processing unit 603, is additionally operable to when receiving MAC response messages, updates the MAC forward tables stored, and
Using the MAC Address of the terminal as the source MAC in heading data and source host MAC Address, by the purpose terminal
MAC Address as the target MAC (Media Access Control) address in heading data and destination host MAC Address, added to the heading number of message
Sent in, and by the message to interchanger, with causing purpose MAC of the interchanger in the heading data
Location forwards the message.
Further, the determining unit 602, is additionally operable to it is determined that the IP address and the terminal of the purpose terminal
When IP address is differed, the mac address information of the first router is determined in the MAC forward tables stored.
Wherein, during the first router is the subnet where the terminal, forward the packet to the route of other subnets
Device.
The processing unit, 603 are additionally operable to regard the MAC Address of the terminal as the source MAC in heading data
And source host MAC Address, it regard the MAC Address of the purpose terminal as the destination host MAC Address in heading data；By
The MAC Address of one router is as the target MAC (Media Access Control) address in heading data, added in the heading data of message, by institute
State message to send to the interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward
The message.
The embodiments of the invention provide a kind of terminal, terminal obtained by server the IP address of purpose terminal and
After mac address information, determine whether the IP address of this purpose terminal is identical with the IP address of terminal；Determining purpose terminal
When IP address is identical with the IP address of terminal, then according to the MAC Address of purpose terminal, determined in the MAC forward tables stored
Whether have occurrence, however, it is determined that going out has occurrence, then using the MAC Address of terminal as the source MAC in heading data and
Source host MAC Address, regard the MAC Address of the purpose terminal as the target MAC (Media Access Control) address and destination host in heading data
MAC Address, sends to interchanger added in the heading data of message, and by the message, to cause the interchanger root
The message is forwarded according to the target MAC (Media Access Control) address in the heading data.So, all terminals are respectively provided with same subnet
During identical IP address, by the destination host MAC Address added in the heading data of message, it can indicate this message
Which it is forwarded in terminal, so as in same subnet, identify terminal with MAC Address, in different subnets, pass through
IP address and MAC Address common ID terminal, and then can be identified relative to private IP address of the prior art in subnet
Go out more terminals, it is possible to achieve further alleviate the short purpose of IPv4 addresses.
The embodiments of the invention provide a kind of router, as shown in fig. 7, comprises：
Receiving unit 701, the message for receiving network side transmission.
Wherein, the message includes heading data and valid data.The heading data include：Between source network mutually
Protocol IP address even, purpose IP address, source host medium access control MAC Address, destination host MAC Address, source MAC
And target MAC (Media Access Control) address.
Resolution unit 702, for parsing the message that the receiving unit 701 is received, obtains the purpose of the message
IP address.
Determining unit 703, for determine the purpose IP address that the resolution unit 702 obtains whether with the route
The IP address of device is identical.
Processing unit 704, the IP for determining the purpose IP address and the router in the determining unit 703
When address is identical, then the destination host MAC Address in the heading data of the message, updates the purpose of the message
MAC Address, and the message that have updated target MAC (Media Access Control) address is sent to interchanger, to cause the interchanger according to the message
Target MAC (Media Access Control) address in head data forwards the message.
The embodiments of the invention provide a kind of router, router parses this after the message of network side transmission is received
Message, obtains purpose IP address.It is determined that whether the purpose IP address obtained is identical with the IP address of itself, if identical, according to institute
State the destination host MAC Address in the heading data of message, with updating purpose MAC in the heading data of the message
Location, and the message that have updated target MAC (Media Access Control) address is sent to interchanger, so as to purpose of this interchanger in heading data
MAC Address is forwarded the packet to purpose terminal.So, when all terminals are respectively provided with identical IP address in same subnet,
By the destination host MAC Address added in the heading data of message, can indicate which terminal this message is forwarded to
In, so as in same subnet, terminal is identified with MAC Address, in different subnets, by IP address and MAC
Location common ID terminal, and then more terminals can be identified in subnet relative to private IP address of the prior art,
The short purpose for further alleviating IPv4 addresses can be realized.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That the independent physics of unit includes, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are to cause a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the portion of each embodiment methods described of the invention
Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various to store
The medium of program code.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (8)
1. a kind of method of transmitting message, it is characterised in that including：
First terminal obtains the Protocol IP address and medium access control MAC interconnected between the network of purpose terminal by server
Address information；
The first terminal determines whether the IP address of the purpose terminal is identical with the IP address of the first terminal；
It is when the first terminal determines that the IP address of the purpose terminal is identical with the IP address of the first terminal, then described
Whether first terminal is according to the mac address information of the purpose terminal, it is determined that having in the MAC forward tables stored and the purpose
The occurrence that the mac address information of terminal matches；
If it is determined that there is occurrence, then the first terminal using the MAC Address of the first terminal as in heading data
Source MAC and source host MAC Address, regard the MAC Address of the purpose terminal as the target MAC (Media Access Control) address in heading data
And destination host MAC Address, sent added in the heading data of message, and by the message to interchanger, to cause
State target MAC (Media Access Control) address of the interchanger in the heading data and forward the message；The message includes：Heading data
And valid data；The heading data include：Source IP address, purpose IP address, source host MAC Address, destination host MAC
Location, source MAC and target MAC (Media Access Control) address.
2. according to the method described in claim 1, it is characterised in that also include：
If it is determined that without occurrence, then the first terminal broadcasts MAC request messages where it in subnet；The MAC please
Seek the mac address information that the purpose terminal is carried in message；
If the first terminal receives MAC response messages, the first terminal updates the MAC forward tables stored, and will
The MAC Address of the first terminal is whole by the purpose as the source MAC in heading data and source host MAC Address
The MAC Address at end is as the target MAC (Media Access Control) address in heading data and destination host MAC Address, added to the heading of message
In data, and the message is sent to interchanger, to cause purpose MAC of the interchanger in the heading data
Address forwards the message.
3. method according to claim 1 or 2, it is characterised in that also include：
When the first terminal determines that the IP address of the purpose terminal and the IP address of the first terminal are differed, then institute
State the mac address information that first terminal determines the first router in the MAC forward tables stored；The first router is institute
State in the subnet where first terminal, forward the packet to the router of other subnets；
The first terminal regard the MAC Address of the first terminal as the source MAC in heading data and source host MAC
Address, regard the MAC Address of the purpose terminal as the destination host MAC Address in heading data；By the first router
Added in the heading data of message, the message is sent as the target MAC (Media Access Control) address in heading data for MAC Address
To the interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.
4. a kind of method of transmitting message, it is characterised in that including：
Router receives the message that network side is sent；The message includes heading data and valid data；The heading number
According to including：The Protocol IP address that is interconnected between source network, purpose IP address, source host medium access control MAC Address, purpose master
Machine MAC Address, source MAC and target MAC (Media Access Control) address；
The router parses the message, obtains the purpose IP address of the message；
The router determines whether the purpose IP address is identical with the IP address of the router；
If the router determines that the purpose IP address is identical with the IP address of the router, according to the report of the message
Destination host MAC Address in literary head data, updates the target MAC (Media Access Control) address in the heading data of the message, and will update
The message of target MAC (Media Access Control) address is sent to interchanger, to cause purpose MAC of the interchanger in the heading data
Address forwards the message.
5. a kind of terminal, it is characterised in that including：
The Protocol IP address interconnected between acquiring unit, the network for obtaining purpose terminal by server and medium access control
Mac address information processed；
Determining unit, for determine the purpose terminal that the acquiring unit is obtained IP address whether the IP with the terminal
Address is identical；
The determining unit, is additionally operable to when the IP address for determining the purpose terminal is identical with the IP address of the terminal,
Then according to the mac address information of the purpose terminal, it is determined that whether having in the MAC forward tables stored and the purpose terminal
The occurrence that mac address information matches；
Processing unit, for when the determining unit has determined occurrence, regarding the MAC Address of the terminal as heading
Source MAC and source host MAC Address in data, regard the MAC Address of the purpose terminal as the mesh in heading data
MAC Address and destination host MAC Address, sent added in the heading data of message, and by the message to interchanger,
To cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message；The message includes：Report
Literary head data and valid data；The heading data include：Source IP address, purpose IP address, source host MAC Address, purpose
Host MAC address, source MAC and target MAC (Media Access Control) address.
6. terminal according to claim 5, it is characterised in that
The processing unit, be additionally operable to the determining unit determine there is no occurrence when, where the terminal in subnet
Broadcast MAC request messages；The mac address information of the purpose terminal is carried in the MAC request messages；
The processing unit, is additionally operable to when receiving MAC response messages, updates the MAC forward tables that have stored, and by the end
The MAC Address at end is as the source MAC in heading data and source host MAC Address, by the MAC Address of the purpose terminal
As the target MAC (Media Access Control) address in heading data and destination host MAC Address, added in the heading data of message, and will
The message is sent to interchanger, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward institute
State message.
7. the terminal according to claim 5 or 6, it is characterised in that
The determining unit, is additionally operable to when it is determined that the IP address of the purpose terminal is differed with the IP address of the terminal,
The mac address information of the first router is determined in the MAC forward tables stored；The first router is the terminal place
Subnet in, forward the packet to the router of other subnets；
The processing unit, is additionally operable to regard the MAC Address of the terminal as the source MAC and source host in heading data
MAC Address, regard the MAC Address of the purpose terminal as the destination host MAC Address in heading data；By the first router
MAC Address as the target MAC (Media Access Control) address in heading data, added in the heading data of message, the message is sent out
The interchanger is delivered to, to cause target MAC (Media Access Control) address of the interchanger in the heading data to forward the message.
8. a kind of router, it is characterised in that including：
Receiving unit, the message for receiving network side transmission；The message includes heading data and valid data；The report
Literary head data include：The Protocol IP address that is interconnected between source network, purpose IP address, source host medium access control MAC Address,
Destination host MAC Address, source MAC and target MAC (Media Access Control) address；
Resolution unit, for parsing the message that the receiving unit is received, obtains the purpose IP address of the message；
Determining unit, for determine the purpose IP address that the resolution unit obtains whether the IP address with the router
It is identical；
Processing unit, for determining that the purpose IP address is identical with the IP address of the router in the determining unit
When, then the destination host MAC Address in the heading data of the message, updates the target MAC (Media Access Control) address of the message, and
The message that have updated target MAC (Media Access Control) address is sent to interchanger, to cause the interchanger according in the heading data
Target MAC (Media Access Control) address forwards the message.
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| CN104796630B (en) * | 2015-05-13 | 2018-08-10 | 长沙楚风数码科技有限公司 | A kind of distributed signal switched transmission method |
| EP3863247A1 (en) * | 2017-07-10 | 2021-08-11 | BGC Partners, L.P. | Networks for packet monitoring and replay |
| CN111225403A (en) * | 2018-11-23 | 2020-06-02 | 广州慧睿思通信息科技有限公司 | Induction method and device based on mobile communication terminal IP address |
| WO2020258302A1 (en) * | 2019-06-28 | 2020-12-30 | 华为技术有限公司 | Method, switch, and sites for data transmission |
| CN111787025B (en) * | 2020-07-23 | 2022-02-22 | 迈普通信技术股份有限公司 | Encryption and decryption processing method, device and system and data protection gateway |
| CN116915777B (en) * | 2023-09-13 | 2023-12-05 | 杭州立方控股股份有限公司 | Intelligent parking management system and method for seat personnel cooperation |
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| CN1457178A (en) * | 2002-05-10 | 2003-11-19 | 华为技术有限公司 | Communication method for sharing one subnet section of protocol between network by multiple virtual local networks |
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