CN106210164B - A kind of IP address conflict processing method and processing device - Google Patents
A kind of IP address conflict processing method and processing device Download PDFInfo
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- CN106210164B CN106210164B CN201610512667.9A CN201610512667A CN106210164B CN 106210164 B CN106210164 B CN 106210164B CN 201610512667 A CN201610512667 A CN 201610512667A CN 106210164 B CN106210164 B CN 106210164B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5046—Resolving address allocation conflicts; Testing of addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
- H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
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Abstract
The present invention provides a kind of IP address conflict processing method and processing device, the described method includes: the MAC Address in ARP entry corresponding with the first VM in local ARP entry to be updated to the MAC Address of the 2nd VM when determining two VM for existing and there is identical IP address with the first virtual machine VM under this VXLAN IP gateway；Notice message is sent to the first VM, the notice message is used to that the first VM to be notified to there is the 2nd VM for having identical IP address with the first VM；Wherein, the MAC Address of the 2nd VM is carried in the notice message.It can enable the generation of VM timely learning IP address conflict using the embodiment of the present invention, and the VM that IP address conflict occurs is accurately positioned.
Description
Technical field
The present invention relates to network communication technology field more particularly to a kind of IP address conflict processing method and processing devices.
Background technique
At distributed VXLAN (Virtual eXtensible Local Area Network, virtual expansible local area network)
In IP (Internet Protocol, Internet protocol) gateway networking plan, every VTEP (VXLAN Tunneling End
Point, VXLAN tunneling termination) equipment all can serve as VXLAN IP gateway, three layers of forwarding are carried out to the flow of site-local,
The pressure of gateway is alleviated well.
In distributed VXLAN IP gateway networking, on all distributed VXLAN IP gateways (hereinafter referred to as GW) all
It needs to create VSI (Virtual Switch Interface, virtual switch interface) virtual interface, and is identical on different GW
VSI virtual interface configures identical IP address and MAC Address, the gateway address as virtual machine in VXLAN.In addition, also being needed on GW
Open local ARP (Address Resolution Protocol, address resolution protocol) agent functionality.
By taking the virtual machine communication under difference GW in same VXLAN as an example, as VM (Virtual Machine, virtual machine) 1 is visited
Ask VM2 (VM1 and VM2 are the virtual machine in same VXLAN under difference GW), process is as follows:
VM1 sends ARP request message, obtains the MAC Address of VM2, the ARP that the VM1 that GW (being assumed to be GW1) is received is sent
When request message, on the one hand learn the ARP information of VM1, and carry out the ARP request message for answering, thus what VM1 learnt
The MAC Address of VM2 is the MAC Address that the VSI virtual interface (being assumed to be VSI virtual interface 10) of VM1 is connected on GW1.
On the other hand, GW1 by ARP request message transmitting terminal IP address and transmitting terminal MAC Address be revised as VSI virtual connection
The other GW (assuming that the GW that VM2 is connected is GW2) being forwarded in VXLAN after the IP address and MAC Address of mouth 10, and pass through EVPN
(Ethernet Virtual Private Network, Ethernet Virtual Private Network) agreement will be according to the ARP information learnt
The ARP entry of generation is synchronized to other GW.
It after GW2 receives the ARP request message, is broadcasted in local VXLAN 10, while passing through EVPN agreement
Learn the ARP information to VM1；After VM2 receives ARP request message, the ARP information of GW is arrived in study, and sends ARP to GW2 and answer
Answer message；GW2 learns the ARP information of VM2 according to the arp reply message of VM2, and by the corresponding ARP entry of the ARP information of VM2
By EVPN protocol synchronization to GW1, thus ARP information of the GW1 study to VM2.
After the study for completing ARP information by above-mentioned process, the message of VM1 to VM2 is believed according to the ARP learnt
Breath is forwarded: being sent to GW1 first；After GW1 carries out VXLAN encapsulation to it, GW2 is sent it to；It, will after GW2 decapsulation
It is sent to VM2.
However practice discovery, since in existing distribution VXLAN IP gateway networking, the ARP message of virtual machine is redirected
GW is arrived, therefore, when different VM use identical IP address, VM can not be perceived, and then it is different to may cause the business on virtual machine
Often.
Summary of the invention
The present invention provides a kind of IP address conflict processing method and processing device, to solve existing distribution VXLAN IP gateway group
In net, when different VM use identical IP address, the problem of VM can not perceive IP address conflict.
According to a first aspect of the embodiments of the present invention, a kind of IP address conflict processing method is provided, is applied to distributed empty
Intend the VXLAN IP gateway in expansible local area network VXLAN Internet protocol IP gateway networking, the VXLAN IP gateway is enabled
In Address Resolution Protocol ARP agency or ARP generation, are answered, this method comprises:
When determining two VM for existing and there is identical IP address with the first virtual machine VM under this VXLAN IP gateway, it incite somebody to action this
MAC Address in ground ARP entry in ARP entry corresponding with the first VM is updated to the MAC Address of the 2nd VM；
Notice message is sent to the first VM, the notice message is for notifying the first VM to exist and described first
VM has the 2nd VM of identical IP address；Wherein, the MAC Address of the 2nd VM is carried in the notice message.
According to a second aspect of the embodiments of the present invention, a kind of IP address conflict processing unit is provided, is applied to distributed empty
Intend the VXLAN IP gateway in expansible local area network VXLAN Internet protocol IP gateway networking, the VXLAN IP gateway is enabled
In Address Resolution Protocol ARP agency or ARP generation, are answered, which includes:
Determination unit, being used to determine whether to exist has identical IP address with the first virtual machine VM under this VXLAN IP gateway
The 2nd VM；
Updating unit, for determining to exist that there is identical IP with the first VM under this VXLAN IP gateway when the determination unit
When two VM of address, the MAC Address in ARP entry corresponding with the first VM in local ARP entry is updated to described
The MAC Address of 2nd VM；
Transmission unit, for having when the determination unit determines to exist with the first virtual machine VM under this VXLAN IP gateway
When two VM of identical IP address, the first VM of Xiang Suoshu sends notice message, and the notice message is for notifying the first VM
In the presence of the 2nd VM with the first VM with identical IP address；Wherein, carry the 2nd VM's in the notice message
MAC Address.
Using the embodiment of the present invention, by determining exist and the specific identical IP of the first VM under this VXLAN IP gateway
When two VM of location, the MAC Address in ARP entry corresponding with the first VM in local ARP entry is updated to the MAC of the 2nd VM
Address, and the notice message for carrying the MAC Address of the 2nd VM is sent to the first VM, notify the first VM to exist has with the first VM
2nd VM of identical IP address, enables the generation of VM timely learning IP address conflict, and to occur the VM of IP address conflict into
Row is accurately positioned.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of IP address conflict processing method provided in an embodiment of the present invention；
Fig. 2A is the structural schematic diagram of the application scenarios of IP address conflict under a kind of same gateway provided in an embodiment of the present invention；
Fig. 2 B is the structural representation of the application scenarios of IP address conflict under a kind of different gateways provided in an embodiment of the present invention
Figure；
Fig. 3 is a kind of structural schematic diagram of IP address conflict processing unit provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another IP address conflict processing unit provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another IP address conflict processing unit provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another IP address conflict processing unit provided in an embodiment of the present invention.
Specific embodiment
Technical solution in embodiment in order to enable those skilled in the art to better understand the present invention, and make of the invention real
The above objects, features, and advantages for applying example can be more obvious and easy to understand, with reference to the accompanying drawing to technical side in the embodiment of the present invention
Case is described in further detail.
Referring to Figure 1, Fig. 1 is a kind of flow diagram of IP address conflict processing method provided in an embodiment of the present invention,
Wherein, which can be applied to the VXLAN IP gateway in distributed VXLAN IP gateway networking, the VXLAN
IP gateway enables ARP proxy or ARP generation is answered, as shown in Figure 1, the IP address conflict processing method may comprise steps of:
It should be noted that in embodiments of the present invention, step 101~step 102 executing subject can be distribution
The processor of any gateway or gateway in VXLAN IP gateway networking, such as CPU (Center Process Unit, central processing
Unit), for ease of description, being illustrated so that step 101~step 102 executing subject is the first gateway as an example below.Wherein,
First gateway is any gateway in distribution VXLAN IP gateway networking.
Step 101, when determine exist with the first VM under this VXLAN IP gateway have identical IP address two VM when, will
MAC Address in local ARP entry in ARP entry corresponding with the first VM is updated to the MAC Address of the 2nd VM.
In the embodiment of the present invention, the first VM is simultaneously not specific to a certain fixed VM, but may refer to the first gateway and learnt to arrive
The VM of any VXLAN IP gateway of ARP information；Similarly, the 2nd VM also and is not specific to a certain fixed VM, but may refer to
Any VM except first VM.
In the embodiment of the present invention, when the first gateway determines to exist have identical IP with the first VM under this VXLAN IP gateway
When two VM of address, i.e. the first gateway determines that the first gateway can first according to the IP of the 2nd VM there are when IP address conflict
Location and MAC Address update ARP entry corresponding with the first VM in local ARP table, i.e., will be corresponding with the first VM in local ARP table
MAC Address in ARP entry be updated to the 2nd VM MAC Address (due to the first VM and the 2nd VM IP address having the same, because
This, IP address haves no need to change).
As an alternative embodiment, in embodiments of the present invention, determines and exist and under this VXLAN IP gateway the
One VM has the 2nd VM of identical IP address, may include:
When the ARP message for receiving the 2nd VM, and the source IP address for determining the ARP message and the first VM in local ARP table
The IP address of corresponding ARP entry is identical, the MAC Address of source MAC ARP entry corresponding with the first VM in local ARP table
When different, the 2nd VM for existing and there is identical IP address with the first VM under this VXLAN IP gateway is determined；Wherein, the first VM and
Two VM are the VM under same VXLAN IP gateway.
In this embodiment, if the first VM and the 2nd VM are the VM under the first gateway, when the first gateway receives
When ARP message (gratuitous ARP packet or the ARP request message) that the 2nd VM is sent, the first gateway can learn the ARP letter of the 2nd VM
Breath, and local ARP table is inquired according to the ARP information of the 2nd VM, if exist in local ARP table it is identical as the IP address of the 2nd VM,
The different ARP entry of MAC Address (i.e. the corresponding ARP entry of the first VM), then the first gateway, which can determine, exists and this VXLAN
The first VM has the 2nd VM of identical IP address under IP gateway, that is, IP address conflict has occurred.
As another optional embodiment, in embodiments of the present invention, determine exist under this VXLAN IP gateway
First VM has the 2nd VM of identical IP address, may include:
When receiving the synchronous ARP entry of distal end VXLAN IP gateway, and the IP address in the ARP entry and local ARP
The IP address of the corresponding ARP entry of the first VM is identical in table, and the MAC Address of MAC Address ARP entry corresponding from the first VM is different
When, determine the 2nd VM for existing and there is identical IP address with the first VM under this VXLAN IP gateway；Wherein, the first VM and the 2nd VM
For the VM under different VXLAN IP gateways.
In this embodiment, if the first VM and the 2nd VM are VM under different VXLAN IP gateways (assuming that the 2nd VM is
VM under second gateway), then when the first gateway, which receives the second gateway, passes through the ARP entry of EVPN protocol synchronization, Ke Yigen
Local ARP table is inquired according to the ARP entry, if existing and the IP address phase in the ARP entry of the second gateway synchronization in local ARP table
Together, the different ARP entry of MAC Address, it is determined that there is that there is identical IP address with the first VM under this VXLAN IP gateway
Two VM, that is, have occurred IP address conflict；Wherein, the ARP entry to come in the local ARP table of the first gateway with the second gateway synchronization
IP address it is identical, the different ARP entry of MAC Address is the corresponding ARP entry of the first VM, what which came
ARP entry IP address corresponding with the first VM is identical, and the different ARP entry of MAC Address is the corresponding ARP entry of the 2nd VM.
Further, in embodiments of the present invention, when the first VM and the 2nd VM is the VM under same VXLAN IP gateway,
After the MAC Address in ARP entry corresponding with the first VM in local ARP entry is then updated to the MAC Address of the 2nd VM, the
Updated ARP entry can also be synchronized to distal end VXLAN IP gateway by one gateway, so that distal end VXLAN IP gateway incite somebody to action this
MAC Address in ground ARP table in ARP entry identical with the IP address in the updated ARP entry be updated to it is described more
The MAC Address in ARP entry after new.
In embodiments of the present invention, by updating the first VM in local ARP table according to the IP address and MAC Address of the 2nd VM
Corresponding ARP entry can effectively be compatible with the normal use after IP address reassigns.For example, the first VM address aging or
Situations such as the first VM of person shuts down, and in the case that the first gateway is known not in time, when the 2nd VM application has arrived original first VM's
When IP address, the 2nd VM be can work normally.
Step 102 sends notice message to the first VM, which has for notifying the first VM to exist with the first VM
2nd VM of identical IP address；Wherein, the MAC Address of the 2nd VM is carried in the notice message.
In the embodiment of the present invention, when the first gateway determine exist with the first VM under this VXLAN IP gateway with identical IP
2nd VM of location, that is, when IP address conflict has occurred, the first gateway can send the MAC Address for carrying the 2nd VM to the first VM
Notice message, which is used to that the first VM to be notified to there is the 2nd VM for having identical IP address with the first VM, thus the
One VM, which can be known, has occurred IP address conflict, and can know IP address conflict, Jin Er has occurred with which VM in itself
One VM can be alerted to administrator, to prompt IP address conflict (such as the first VM has occurred with which VM in administrator itself
IP address conflict has occurred with the 2nd VM), corresponding treatment measures are taken by administrator, such as reconfigure IP address.
Preferably, in embodiments of the present invention, the notice message that the first gateway is sent to the first VM can be gratuitous ARP report
Text, the source MAC of the gratuitous ARP packet are the MAC Address of the 2nd VM, and source IP address is the IP address of the 2nd VM, destination IP
Address is the IP address of the first VM (source IP address is identical with purpose IP address).
It is worth noting that in embodiments of the present invention, the first gateway, which determines, to be existed and under this VXLAN IP gateway first
When VM has two VM of identical IP address, the first gateway will be in ARP entry corresponding with the first VM in local ARP entry
MAC Address is updated to the MAC Address of the 2nd VM, and sends notice message to the first VM, and the first VM is notified to exist and the first VM
For the 2nd VM with identical IP address therebetween and there is no inevitable sequential relationship, i.e. the first gateway can be according to above-mentioned figure
First the MAC Address in ARP entry corresponding with the first VM in local ARP entry is updated described in method flow shown in 1
For the MAC Address of the 2nd VM, after to the first VM send notice message, notifying the first VM to exist has identical IP address with the first VM
The 2nd VM；Alternatively, the first gateway first can send notice message to the first VM, notifying the first VM to exist has phase with the first VM
With the 2nd VM of IP address, after the MAC Address in ARP entry corresponding with the first VM in local ARP entry is updated to second
The MAC Address of VM, this will not be repeated here for the specific implementation embodiment of the present invention.
Further, in embodiments of the present invention, identical in the presence of having with the first VM under this VXLAN IP gateway when determining
Two VM when, alarming processing can also be carried out, there are IP address conflicts to prompt user.
Specifically, in embodiments of the present invention, having when the first gateway determines to exist with the first VM under this VXLAN IP gateway
When having two VM of identical IP address, the first gateway can carry out alarming processing, and to prompt user (such as administrator), there are IP
Location conflict.
For example, the first gateway can inform administrator by way of sending log or alarm information, there are IP address punchings
It is prominent.
Further, in embodiments of the present invention, when the notice message that the first gateway is sent to the first VM is gratuitous ARP report
Wen Shi, it is contemplated that when the first VM receives the ARP message, ARP message can be responded, the first gateway receives the first VM response
When ARP message, ARP entry (the i.e. corresponding ARP table of IP address of the first VM or the 2nd VM of corresponding IP address can be updated again
), the first gateway can send the gratuitous ARP packet for carrying the MAC Address of the first VM to the 2nd VM again at this time, notify the 2nd VM
In the presence of the first VM with the 2nd VM with identical IP address, in turn, the 2nd VM can respond ARP message, and then the first gateway is again
Repetition updates corresponding ARP entry ..., and then causes to generate a large amount of log and ARP message, causes system resource waste.Cause
This, in order to avoid above situation generation, in embodiments of the present invention, if notice message is MAC that source MAC is the 2nd VM
Location, source IP address are the IP address of the 2nd VM, and purpose IP address is the gratuitous ARP packet of the IP address of the first VM, then work as determination
When in the presence of two VM with the first VM under this VXLAN IP gateway with identical IP address, can also include:
Start preset timer, and before preset timer time-out, refuses the ARP message responded to the first VM received
It is handled.
Specifically, in embodiments of the present invention, having when the first gateway determines to exist with the first VM under this VXLAN IP gateway
When having two VM of identical IP address, the first gateway in addition to can according to the method described above described in process the step of handled
Except, a preset timer (the overtime duration of the preset timer can be set according to concrete scene) can also be started,
Before preset timer time-out, if the first gateway receives the ARP message that the first VM is responded, (the first VM receives the first gateway hair
The ARP message responded after the above-mentioned gratuitous ARP packet sent) when, the first gateway can be refused to handle the ARP message, such as
The ARP information for not including further according to the ARP message updates the relevant entries in local ARP table, also no longer exempts to the 2nd VM transmission
Take ARP message, to guarantee before preset timer time-out, identical IP address conflict will not be reprocessed, and save system
System resource.
As it can be seen that in method flow shown in Fig. 1, by determining to exist have with the first VM under this VXLAN IP gateway
When two VM of the identical IP address of body, the MAC Address in ARP entry corresponding with the first VM in local ARP entry is updated to
The MAC Address of 2nd VM, and the notice message for carrying the MAC Address of the 2nd VM is sent to the first VM, notify the first VM to exist
There is the 2nd VM of identical IP address with the first VM, enable the generation of VM timely learning IP address conflict, and to IP occurs
The VM of location conflict is accurately positioned.
In order to more fully understand those skilled in the art, the present invention implements the technical solution provided, below with reference to specifically answering
It is described with scene technical solution provided in an embodiment of the present invention.
Fig. 2A is referred to, is the structure of the application scenarios of IP address conflict under a kind of same gateway provided in an embodiment of the present invention
Schematic diagram, as shown in Figure 2 A, in the application scenarios, GW1 and GW2 enable ARP proxy function, VM2 and VM3 tool under GW2
There is identical IP address (1.1.1.3), be based on the application scenarios, IP address conflict process flow is as follows:
1, gratuitous ARP packet or ARP request message (source IP address 1.1.1.3) are sent when VM3 is online；
2, since GW2 enables ARP proxy function, GW2 receive VM3 transmission ARP message when, no matter purpose
IP address whether the IP address for being GW2, can be by the ARP messages transmitted to CPU.It, can be according to this when GW2 handles the ARP message
ARP message inquires ARP table, finds to exist in local ARP table identical as IP address (1.1.1.3) of VM3, and MAC Address is VM2's
The ARP entry of MAC Address, then GW2 can update the ARP entry (with being updated to the MAC of VM3 by the MAC Address of the ARP entry
Location), and use the MAC Address of GW2 as the source MAC of arp reply message, carry out arp reply；
3, GW2 to port where VM2 send gratuitous ARP packet (source MAC is the MAC Address of VM3, source IP address and
Purpose IP address is 1.1.1.3), for informing that its IP address of VM2 conflicts with VM3；
4, there are IP address conflicts by GW2 transmission log informing administrator；
5, the ARP entry of VM3 is synchronized to other gateways (such as GW1) using EVPN agreement, so that GW1 updates local ARP
Related ARP entry in table.
Fig. 2 B is referred to, is the knot of the application scenarios of IP address conflict under a kind of different gateways provided in an embodiment of the present invention
Structure schematic diagram, as shown in Figure 2 B, in the application scenarios, GW1 and GW2 enable ARP proxy function, VM1 and GW2 under GW1
Under VM3 IP address having the same (1.1.1.3), be based on the application scenarios, IP address conflict process flow is as follows:
1, gratuitous ARP packet or ARP request message (source IP address 1.1.1.3) can be sent when VM3 is online；
2, since GW2 enables ARP proxy function, GW2 receive VM3 transmission ARP message when, no matter destination IP
Address whether the IP address for being GW2, can be by the ARP messages transmitted to CPU.It, can be according to the ARP when GW2 handles the ARP message
Message inquires ARP table, finds there is, MAC Address different ARP identical as IP address (1.1.1.3) of VM3 in local ARP table
List item, and the ARP entry is that other gateway synchronizations come, then GW2 can update the ARP entry (by the MAC of the ARP entry
Address is updated to the MAC Address of VM3), and use the MAC Address of GW2 as the source MAC of arp reply message, carry out ARP
Response；
3, by EVPN agreement, by updated ARP entry, (IP address 1.1.1.3, MAC Address are the MAC of VM3 to GW2
Address) it is synchronized to other gateways；
4, GW1 receives the ARP entry that GW2 passes through EVPN protocol synchronization, inquires local ARP table, there are IP address for discovery
Identical (1.1.1.3), but MAC Address is the ARP entry of the MAC Address of VM1, thus, GW1 updates the ARP entry (by the ARP
The MAC Address of list item is updated to the MAC Address of VM3)；
5, GW1 sends gratuitous ARP packet (MAC Address of the source MAC of message for VM3, source IP to port where VM1
Address and purpose IP address are 1.1.1.3), for informing that its IP address of VM1 conflicts with VM3；
6, there are address conflicts by GW1 transmission log informing administrator.
Through above description as can be seen that in technical solution provided in an embodiment of the present invention, by determine exist with
The first VM under this VXLAN IP gateway specifically two VM of identical IP address when, will be corresponding with the first VM in local ARP entry
ARP entry in MAC Address be updated to the MAC Address of the 2nd VM, and the MAC Address for carrying the 2nd VM is sent to the first VM
Notice message, notify the first VM exist with the first VM have identical IP address the 2nd VM, with enabling VM timely learning IP
The generation of location conflict, and the VM that IP address conflict occurs is accurately positioned.
Fig. 3 is referred to, is a kind of structural schematic diagram of IP address conflict processing unit provided in an embodiment of the present invention,
In, described device can be applied to the first gateway in above method embodiment, as shown in figure 3, IP address conflict processing dress
It sets and may include:
Determination unit 310, being used to determine whether to exist has identical IP address with the first VM under this VXLAN IP gateway
2nd VM；
Updating unit 320, for existing and the first virtual machine under this VXLAN IP gateway when the determination unit 310 determines
When VM has two VM of identical IP address, by the MAC in ARP entry corresponding with the first VM in local ARP entry
Location is updated to the MAC Address of the 2nd VM；
Transmission unit 330, for having when the determination unit 310 determines to exist with the first VM under this VXLAN IP gateway
When two VM of identical IP address, the first VM of Xiang Suoshu sends notice message, and the notice message is for notifying the first VM
In the presence of the 2nd VM with the first VM with identical IP address；Wherein, carry the 2nd VM's in the notice message
MAC Address.
In an alternative embodiment, the determination unit 310 can be specifically used for when the ARP report for receiving the 2nd VM
Text, and determine that the source IP address of the ARP message is identical as the IP address of the corresponding ARP entry of the first VM in local ARP table, source
When the MAC Address difference of MAC Address ARP entry corresponding with the first VM in local ARP table, determines and exist and this VXLAN IP network
Close the 2nd VM that lower first VM has identical IP address；Wherein, the first VM and the 2nd VM is same VXLAN IP network
VM under closing；Or, when receiving the synchronous ARP entry of distal end VXLAN IP gateway, and IP address and local in the ARP entry
The IP address of the corresponding ARP entry of the first VM is identical in ARP table, the MAC Address of MAC Address ARP entry corresponding with the first VM
When different, the 2nd VM for existing and there is identical IP address with the first VM under this VXLAN IP gateway is determined；Wherein, the first VM
From the VM that the 2nd VM is under different VXLAN IP gateways.
Referring to Figure 4 together, Fig. 4 is that the structure of another IP address conflict processing unit provided in an embodiment of the present invention is shown
It is intended to, on the basis of embodiment shown in Fig. 3, IP address conflict processing unit shown in Fig. 4 can also include:
Alarm Unit 340, for having when the determination unit 310 determines to exist with the first VM under this VXLAN IP gateway
When two VM of identical IP address, alarming processing is carried out, there are IP address conflicts to prompt user.
Please refer to fig. 5, the structure that Fig. 5 is another IP address conflict processing unit provided in an embodiment of the present invention is shown
It is intended to, on the basis of embodiment shown in Fig. 3, IP address conflict processing unit shown in fig. 5 can also include:
Synchronization unit 350, for when the first VM and the 2nd VM be same VXLAN IP gateway under VM when, will be updated
ARP entry is synchronized to distal end VXLAN IP gateway so that the distal end VXLAN IP gateway by local ARP table with the update
The MAC Address in the identical ARP entry of the IP address in ARP entry afterwards is updated to the MAC in the updated ARP entry
Address.
In an alternative embodiment, the notice message is the MAC Address that source MAC is the 2nd VM, source IP address
For the IP address of the 2nd VM, purpose IP address is the gratuitous ARP packet of the IP address of the first VM,
Referring to Figure 6 together, Fig. 6 is that the structure of another IP address conflict processing unit provided in an embodiment of the present invention is shown
It is intended to, on the basis of embodiment shown in Fig. 3, IP address conflict processing unit shown in fig. 6 can also include:
Start unit 360, for starting preset timer；
Processing unit 370, for before the preset timer time-out, refusal to be directed to institute to the first VM received
The ARP message for stating gratuitous ARP packet response is handled.
The function of each unit and the realization process of effect are specifically detailed in the above method and correspond to step in above-mentioned apparatus
Realization process, details are not described herein.
For device embodiment, since it corresponds essentially to embodiment of the method, so related place is referring to method reality
Apply the part explanation of example.The apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
The purpose for needing to select some or all of the modules therein to realize the present invention program.Those of ordinary skill in the art are not paying
Out in the case where creative work, it can understand and implement.
As seen from the above-described embodiment, by determining exist and the specific identical IP of the first VM under this VXLAN IP gateway
When two VM of location, ARP table corresponding with the first VM in local ARP table is updated according to the IP address of the 2nd VM and MAC Address
, and the notice message for carrying the MAC Address of the 2nd VM is sent to the first VM, notifying the first VM to exist has phase with the first VM
With the 2nd VM of IP address, enable the generation of VM timely learning IP address conflict, and the VM that IP address conflict occurs is carried out
It is accurately positioned.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of IP address conflict processing method, which is characterized in that be applied to the expansible local area network VXLAN interconnection of distributed virtual
VXLAN IP gateway in fidonetFido IP gateway networking, the VXLAN IP gateway enable Address Resolution Protocol ARP agency or ARP
In generation, is answered, which comprises
It, will be local when determining two VM for existing and there is identical IP address with the first virtual machine VM under this VXLAN IP gateway
MAC Address in ARP entry in ARP entry corresponding with the first VM is updated to the MAC Address of the 2nd VM；
Notice message is sent to the first VM, the notice message has for notifying the first VM to exist with the first VM
There is the 2nd VM of identical IP address；Wherein, the MAC Address of the 2nd VM is carried in the notice message.
2. the method according to claim 1, wherein the determination exists and the first VM under this VXLAN IP gateway
The 2nd VM with identical IP address, comprising:
When the ARP message for receiving the 2nd VM, and the source IP address for determining the ARP message and the first VM in local ARP table
The IP address of corresponding ARP entry is identical, the MAC Address of source MAC ARP entry corresponding with the first VM in local ARP table
When different, the 2nd VM for existing and there is identical IP address with the first VM under this VXLAN IP gateway is determined；Wherein, the first VM
With the VM that the 2nd VM is under same VXLAN IP gateway；Or,
When the ARP entry for receiving the synchronization of distal end VXLAN IP gateway, and in the IP address in the ARP entry and local ARP table
The IP address of the corresponding ARP entry of first VM is identical, when the MAC Address difference of MAC Address ARP entry corresponding with the first VM,
Determine the 2nd VM for existing and there is identical IP address with the first VM under this VXLAN IP gateway；Wherein, the first VM with it is described
2nd VM is the VM under different VXLAN IP gateways.
3. the method according to claim 1, wherein existing under this VXLAN IP gateway first virtually when determining
When machine VM has two VM of identical IP address, the method also includes:
Alarming processing is carried out, there are IP address conflicts to prompt user.
4. the method according to claim 1, wherein when the first VM and the 2nd VM is under same VXLAN IP gateway
VM when, the MAC Address by ARP entry corresponding with the first VM in local ARP entry is updated to described second
After the MAC Address of VM, the method also includes:
Updated ARP entry is synchronized to distal end VXLAN IP gateway, so that the distal end VXLAN IP gateway is according to
Updated ARP entry will be in ARP entry identical with the IP address in the updated ARP entry in local ARP table
MAC Address is updated to the MAC Address in the updated ARP entry.
5. the method according to claim 1, wherein it is the 2nd VM that the notice message, which is source MAC,
MAC Address, source IP address be the 2nd VM IP address, purpose IP address be the first VM IP address it is free
ARP message,
When determining two VM for existing and having identical IP address with the first VM under this VXLAN IP gateway, the method is also wrapped
It includes:
Start preset timer, and before the preset timer time-out, refusal is to the first VM received for described
The ARP message that gratuitous ARP packet is responded is handled.
6. a kind of IP address conflict processing unit, which is characterized in that be applied to the expansible local area network VXLAN interconnection of distributed virtual
VXLAN IP gateway in fidonetFido IP gateway networking, the VXLAN IP gateway enable Address Resolution Protocol ARP agency or ARP
In generation, is answered, and described device includes:
Determination unit is used to determine whether there is have identical IP address with the first virtual machine VM under this VXLAN IP gateway the
Two VM；
Updating unit, for existing with the first virtual machine VM under this VXLAN IP gateway when the determination unit determines with identical
When two VM of IP address, the MAC Address in ARP entry corresponding with the first VM in local ARP entry is updated to institute
State the MAC Address of the 2nd VM；
Transmission unit, for determining to exist that there is identical IP address with the first VM under this VXLAN IP gateway when the determination unit
Two VM when, the first VM of Xiang Suoshu send notice message, the notice message for notify the first VM exist with it is described
First VM has the 2nd VM of identical IP address；Wherein, the MAC Address of the 2nd VM is carried in the notice message.
7. device according to claim 6, which is characterized in that
The determination unit receives the ARP message of the 2nd VM specifically for working as, and with determining the source IP of the ARP message
Location is identical as the IP address of the corresponding ARP entry of the first VM in local ARP table, the first VM pairs in source MAC and local ARP table
When the MAC Address difference for the ARP entry answered, for existing and there is identical IP address with the first VM under this VXLAN IP gateway is determined
Two VM；Wherein, the first VM and the 2nd VM is the VM of same VXLAN IP gateway；Or, when receiving distal end VXLAN
The synchronous ARP entry of IP gateway, and the IP of the ARP entry corresponding with the first VM in local ARP table of the IP address in the ARP entry
Address is identical, when the MAC Address difference of MAC Address ARP entry corresponding with the first VM, determines exist and this VXLAN IP gateway
Lower first VM has the 2nd VM of identical IP address；Wherein, the first VM is different VXLAN IP gateways from the 2nd VM
Under VM.
8. device according to claim 6, which is characterized in that described device further include:
Alarm Unit, for determining to exist that there is identical IP address with the first VM under this VXLAN IP gateway when the determination unit
Two VM when, carry out alarming processing, to prompt user, there are IP address conflicts.
9. device according to claim 6, which is characterized in that described device further include:
Synchronization unit, for when the first VM and the 2nd VM be same VXLAN IP gateway under VM when, by updated ARP entry
Be synchronized to distal end VXLAN IP gateway so that the distal end VXLAN IP gateway by local ARP table with the updated ARP
The MAC Address in the identical ARP entry of IP address in list item is updated to the MAC Address in the updated ARP entry.
10. device according to claim 6, which is characterized in that the notice message is that source MAC is the 2nd VM
MAC Address, source IP address be the 2nd VM IP address, purpose IP address be the first VM IP address it is free
ARP message,
Described device further include:
Start unit, for starting preset timer；
Processing unit, for before the preset timer time-out, refusal to be to the first VM received for described free
The ARP message that ARP message is responded is handled.
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| CN107743095A (en) * | 2017-11-30 | 2018-02-27 | 新华三技术有限公司 | Message forwarding method and device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614942A (en) * | 2003-11-06 | 2005-05-11 | 北京佳讯飞鸿电气有限责任公司 | Method for soluting IP address conflicts in network communication |
| CN1798060A (en) * | 2004-12-24 | 2006-07-05 | 联想(北京)有限公司 | Method and device for detecting conflict of IP addresses in networked computers |
| CN101175000A (en) * | 2007-11-22 | 2008-05-07 | 华为技术有限公司 | Method and device for automatic IP address detection |
| CN101977245A (en) * | 2010-01-07 | 2011-02-16 | 中兴通讯股份有限公司 | Method, network equipment and system for detecting IP (Internet Protocol) address conflict |
-
2016
- 2016-06-29 CN CN201610512667.9A patent/CN106210164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614942A (en) * | 2003-11-06 | 2005-05-11 | 北京佳讯飞鸿电气有限责任公司 | Method for soluting IP address conflicts in network communication |
| CN1798060A (en) * | 2004-12-24 | 2006-07-05 | 联想(北京)有限公司 | Method and device for detecting conflict of IP addresses in networked computers |
| CN101175000A (en) * | 2007-11-22 | 2008-05-07 | 华为技术有限公司 | Method and device for automatic IP address detection |
| CN101977245A (en) * | 2010-01-07 | 2011-02-16 | 中兴通讯股份有限公司 | Method, network equipment and system for detecting IP (Internet Protocol) address conflict |
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