CN104219340B - A kind of arp reply Proxy Method and device - Google Patents
A kind of arp reply Proxy Method and device Download PDFInfo
- Publication number
- CN104219340B CN104219340B CN201410498475.8A CN201410498475A CN104219340B CN 104219340 B CN104219340 B CN 104219340B CN 201410498475 A CN201410498475 A CN 201410498475A CN 104219340 B CN104219340 B CN 104219340B
- Authority
- CN
- China
- Prior art keywords
- address
- message
- information
- mac
- arp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides arp reply Proxy Method and device, methods described includes：The ARP request message that Receiving Host is sent；If detecting, the interchanger disconnects with control device, parses the message information of the ARP request message；Judge whether the list item information for the flow table item that the message information prestores with the interchanger matches；If the message information matches with the list item information, target MAC (Media Access Control) address is obtained；Arp reply message is sent to the main frame according to the target MAC (Media Access Control) address.The present invention can reply arp reply message by interchanger agent control device, so as to avoid the ARP on main frame from being aging, ensure that the proper communication between main frame when interchanger and control device disconnect.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of ARP (Address Resolution Protocol, ground
Location analysis protocol) response Proxy Method and device.
Background technology
SDN (Software Defined Network, software defined network) is a kind of new network architecture, and it can be with
The chain of command of the network equipment is separated with data surface, chain of command function, Yi Jiyou are realized by controller (Controller)
Some interchangers (Switch) realize data surface function, and some main frames can be connected under each interchanger.
In SDN, each main frame preserves the ARP established by the ARP information of study, and each ARP has
Its ageing time fixed.Before each ARP aging, main frame can send ARP request report by interchanger to control device
Text updates the ageing time of its ARP to carry out the ARP of new round study.Main frame after ARP request message is sent, if
The arp reply message of control device reply is received within the ageing time, then updates the ageing time, and refresh the ARP
List item；, can the aging ARP if not receiving the arp reply message of control device reply within the ageing time.
After control device receives the ARP request message of main frame transmission, generally the ARP request message is broadcasted, with
Obtain the information that the ARP request message is asked.However, in order to reduce the quantity of broadcasting packet, control device can not should
ARP request message broadcasting, but the main frame from each host information that control device preserves according to itself to transmission ARP request message
Reply arp reply message.
But if control device disconnects with interchanger, the ARP request message that main frame is initiated can not controlled device
In generation, is answered, then the ARP on main frame can be deleted when ageing time reaches, so as to be difficult to be communicated with other main frames.
The content of the invention
The invention provides arp reply Proxy Method and device to solve because control device and interchanger disconnect,
The problem of ARP request message that main frame is initiated can not be answered in controlled device generation.
The present invention provides a kind of arp reply Proxy Method, applied to the interchanger in SDN, wherein, methods described bag
Include：
The ARP request message that Receiving Host is sent；
If detecting, the interchanger disconnects with control device, parses the message information of the ARP request message；
Judge whether the list item information for the flow table item that the message information prestores with the interchanger matches；
If the message information matches with the list item information, purpose medium access control MAC Address is obtained；
Arp reply message is sent to the main frame according to the target MAC (Media Access Control) address.
The present invention also provides a kind of arp reply Proxy Method, applied to the control device in SDN, wherein, the side
Method includes：
If receiving the service message sent on interchanger after monitoring to be connected with interchanger normally, the business is parsed
The message information of message；
The message information of the service message is matched with the host information that itself prestores；
When host information that the message information of the service message prestores with itself mismatches, by the interchanger to
Main frame issues ARP update.
The present invention also provides a kind of arp reply agent apparatus, applied to the interchanger in SDN, wherein, described device
Including：
Message receiving unit, the ARP request message sent for Receiving Host；
First packet parsing unit, during for detecting that the interchanger and control device disconnect, parse the ARP
The message information of request message；
First information matching unit, the list item of the flow table item to be prestored for judging the message information and the interchanger are believed
Whether breath matches；
MAC Address acquiring unit, for when the message information matches with the list item information, obtaining purpose MAC
Location；
In message generation, answers unit, for sending arp reply message to the main frame according to the target MAC (Media Access Control) address.
The present invention also provides a kind of arp reply agent apparatus, applied to the control device in SDN, wherein, the dress
Put including：
Second packet parsing unit, for receiving the business sent on interchanger after monitoring to be connected with interchanger normally
Message, parse the message information of the service message；
Second information matching unit, the host information for the message information of the service message to be prestored with itself are carried out
Matching；
Message issuance unit, the host information for being prestored in the message information of the service message with itself mismatch
When, ARP update is issued to main frame by the interchanger.
Arp reply Proxy Method and device provided by the invention, by detecting the interchanger and control device
When disconnecting, judge whether its message information matches with the list item information of flow table item according to the ARP request message of reception, and
Arp reply message is sent to the main frame according to corresponding target MAC (Media Access Control) address in flow table item during matching, so as in interchanger and control
When control equipment disconnects, arp reply message is replied by interchanger agent control device, to ensure the positive normal open between main frame
Letter.
Brief description of the drawings
Fig. 1 is SDN networking schematic diagram in the present invention；
Fig. 2 is one embodiment flow chart of arp reply Proxy Method in the present invention；
Fig. 3 is another embodiment flow chart of arp reply Proxy Method in the present invention；
Fig. 4 is the workflow diagram of arp reply Proxy Method in the present invention；
Fig. 5 is the hardware structure schematic diagram of interchanger or control device where arp reply agent apparatus in the present invention；
Fig. 6 is one embodiment structural representation of arp reply agent apparatus in embodiment in the present invention；
Fig. 7 is the example structure schematic diagram of first information matching unit in embodiment in the present invention；
Fig. 8 is the example structure schematic diagram of MAC Address acquiring unit in embodiment in the present invention；
Fig. 9 is that message generation answers the example structure schematic diagram of unit in embodiment in the present invention；
Figure 10 is the example structure schematic diagram of message receiving unit in embodiment in the present invention
Figure 11 is one embodiment structural representation of arp reply agent apparatus in embodiment in the present invention；
Figure 12 is the example structure schematic diagram of the second information matching unit in embodiment in the present invention；
Figure 13 is the example structure schematic diagram of message issuance unit in embodiment in the present invention.
Embodiment
A kind of network environment that the embodiment of the present invention is applied is as shown in figure 1, in SDN, including control device, hands over
Change planes and the multiple main frames of access switch.Interchanger can be that the hardware switch of physical presence can also be VS
(Virtual Switch, virtual switch), main frame can be that the main frame of physical presence can also be VM (Virtual
Machine, fictitious host computer).Interchanger and main frame shown in Fig. 1 be respectively VS (including VS1 and VS2) and VM (including
VM1, VM2, VM3 and VM4), include multiple ports (Port) again on each VS, as included VS1-Port1, VS1- on VS1
Port2, VS1-Port3, wherein, control device disconnects with VS1.Each main frame is preserved to be established by the ARP information of study
ARP, each ARP have its fix ageing time, before each ARP aging, main frame can pass through exchange
The ARP that machine sends an ARP request message progress new round to control device learns, and the ARP that control device receives main frame transmission please
After seeking message, generally the ARP request message is broadcasted, to obtain the information that the ARP request message is asked.However, it is
Reduce the quantity of broadcasting packet, control device can not be by the ARP request message broadcasting, but by control device according to itself
Host response arp reply message of each host information preserved to transmission ARP request message.But if control device is with exchanging
Machine disconnects, and as when control device is connected with VS1 disconnection in Fig. 1, just can not above be sent by the VM1 ARP request messages initiated
To control device, so as to answer in controlled device generation, then if not receiving control within VM1 ARP ageing time
The arp reply message that control equipment is replied, VM1 ARP can then be deleted when ageing time reaches, VM1 so as to being difficult to and
Other main frames are communicated.
Therefore, the invention provides arp reply Proxy Signature Scheme to solve the predicament encountered in prior art.
Referring to Fig. 2, for one embodiment flow chart of arp reply Proxy Method of the present invention, the embodiment is applied in SDN nets
On the interchanger of network, comprise the following steps：
Step 201, the ARP request message that Receiving Host is sent；
In the embodiment of the present invention, exchange opportunity receives the ARP request message that connected each main frame is periodically sent, should
ARP request message is forwarded to control device via interchanger, and each host information that control device preserves according to itself is to sending ARP
The host response arp reply message of request message, the arp reply message replied by main frame according to control device carry out ARP study,
And update the ageing time of the ARP of itself preservation.
Step 202, if detecting, the interchanger disconnects with control device, parses the ARP request message
Message information；
The MAC/IP flow table items that control device issues are prestored in the embodiment of the present invention, in interchanger, the MAC/IP flow tables
The list item information of item includes source MAC, purpose MAC, inbound port, source IP address and the purpose IP address of flow table item.This hair
The bright connection status that can monitor interchanger and control device in real time, even if interchanger and control device disconnecting, interchanger
On the MAC/IP flow table items that are preserved keep constant.Thus, when receiving the ARP request message of main frame transmission, if monitoring
The disconnecting of interchanger and control device, then the message information of the ARP request message is parsed, so that interchanger is according to parsing
The message information gone out replaces control device to reply arp reply message.The message information includes the source MAC of the ARP request message
Address, source IP address, inbound port and purpose IP address.
However, when interchanger is connected normal with control device, interchanger receives the ARP request message of main frame transmission
Afterwards, the ARP request message up sending to control device is still replied into arp reply message by control device.
Step 203, judge whether the list item information for the flow table item that the message information prestores with the interchanger matches；
After the message information of the ARP request message is parsed, all flow table items preserved on interchanger are traveled through, by institute
State source MAC, source IP address, inbound port and the purpose IP address of ARP request message the source MAC with the flow table item respectively
Address, source IP address, inbound port and purpose IP address are compared, if consistent, it is determined that the message information with it is described
List item information matches.
Specifically, all flow table items for preserving in interchanger are traveled through first, in matching (Match) domain for searching each flow table item
Whether with the purpose IP address of the ARP request message consistent purpose IP address is had.The source MAC that wherein, Match domains include
Location, source IP address, inbound port, source IP address and purpose IP address, if there is the purpose IP with the ARP request message in flow table item
The consistent purpose IP address in address, then further by the source MAC having in the flow table item Match domains of consistent purpose IP address,
Source MAC, source IP address and the inbound port of source IP address and inbound port respectively with the ARP request message are compared
Compared with if all consistent, it may be determined that the message information matches with the list item information of the flow table item.If in each flow table item
The purpose IP address consistent with the purpose IP address of the ARP request message is not found in Match domains, illustrates not protect in interchanger
Deposit corresponding forwarding flow table item.So then it is considered that the target MAC (Media Access Control) address asked of the ARP request message can be with
Lower one of two things：
A, the target MAC (Media Access Control) address that the ARP request message is asked is the MAC Address of gateway；
Assuming that VM1 and VM3 is the fictitious host computer of the different IP addresses network segment in Fig. 1, request VM3 MAC Address is sent in VM1
ARP request message before, if VM1 judge VM3 with its not in the same IP address network segment, then can then send purpose IP address
For the ARP request message of gateway ip address, to ask the MAC Address of gateway, in this case, the ARP request message is determined
The target MAC (Media Access Control) address asked is the MAC Address of gateway.
B, the target MAC (Media Access Control) address that the ARP request message is asked is the MAC for the same network segment main frame for not setting up flow table item also
Address (main frame for carrying out ARP study first).
For not finding the mesh consistent with the purpose IP address of the ARP request message in the Match domains of each flow table item
IP address when (situation a or situation b), illustrate not preserving corresponding forwarding flow table item in interchanger.Can be first
According to the source MAC of the ARP request message and source IP address and the source MAC in the flow table item Macth domains with
And source IP address is compared, if the source MAC and source IP address of ARP request message are with the source MAC of the flow table item
Location and source IP address are consistent, and switch ports themselves one of the inbound port of the flow table item with receiving the ARP request message
Cause, further check the action in the flow table item consistent with the source MAC and source IP address of ARP request message
(action) source MAC and target MAC (Media Access Control) address whether are have modified in domain, i.e., whether there occurs MAC Address replacement in action domains
Action, if so, target MAC (Media Access Control) address (the i.e. MAC of gateway in action domains after replacement in source MAC and match domains
Address) it is consistent when, determine that the message information matches with the list item information.
However, in the flow table item consistent with the source MAC and source IP address of ARP request message, may have a plurality of
Replaced there occurs the flow table item that MAC Address is replaced, at this point it is possible to choose any one action domain and carry out MAC Address in action domains
The flow table item changed is matched.The source MAC carried out because this is a plurality of in the action domains of MAC Address replacement is gateway
MAC Address, therefore the flow table item for choosing the action domains of any one progress MAC Address replacement is matched, and can be produced same
The matching result of sample, that is, target MAC (Media Access Control) address (the i.e. gateway in the action domains after replacing in source MAC and match domains
MAC Address) it is consistent.
Still by taking Fig. 1 as an example, when VM1 asks destination host VM3, because VM1 judges VM3 with it not in same IP address
The network segment, therefore the purpose IP address asked of ARP request message sent is the IP address of gateway, in the flow table that interchanger prestores
The flow table item consistent less than with the purpose IP address is searched in.So, if in the ARP request message VM1 source MAC with
And VM1 source IP address is consistent with the source MAC in flow table item Macth domains and source IP address, the ARP request report is received
The switch ports themselves VM1-Port1 of text is consistent with the inbound port VM1-Port1 of corresponding flow table item, further checks the flow table item
With the presence or absence of the modification to source MAC and target MAC (Media Access Control) address in action domains, i.e., whether it is VM1's by original source MAC
MAC Address is revised as gateway MAC address, and original target MAC (Media Access Control) address is revised as to VM3 MAC Address for the MAC Address of gateway,
If so, explanation action domains are there occurs the action that MAC Address is replaced, and source MAC and match in the action domains after replacement
Target MAC (Media Access Control) address (MAC Address of gateway) in domain is consistent.The table of the message information and the flow table item can so be determined
Item information matches.
Step 204, if the message information matches with the list item information, target MAC (Media Access Control) address is obtained；
After according to above-mentioned matching way, the list item information of message information and flow table item is compared, in the ARP request report
It is acquired when text is with the source MAC in flow table item Match domains, source IP address, inbound port and consistent purpose IP address
The target MAC (Media Access Control) address for the destination host that target MAC (Media Access Control) address in corresponding flow table item is asked by the ARP request message；
In the source MAC and source IP address of the ARP request message and the source MAC of the flow table item and source
IP address is consistent, and is repaiied in the action domains in the flow table item consistent with the source MAC of ARP request message and source IP address
Source MAC and target MAC (Media Access Control) address, and the inbound port of the flow table item are changed with receiving exchanging for the ARP request message
When generator terminal mouth is consistent, the target MAC (Media Access Control) address in acquired corresponding flow table item can be the MAC Address of gateway.
Step 205, arp reply message is sent to the main frame according to the target MAC (Media Access Control) address.
After the target MAC (Media Access Control) address that ARP request message is asked is got, interchanger can replace control device according to this
The target MAC (Media Access Control) address generation arp reply message of acquisition, the source MAC of the arp reply message is the purpose of above-mentioned acquisition
MAC Address (corresponding with the list item information of flow table item target MAC (Media Access Control) address or gateway MAC address), the arp reply message
Target MAC (Media Access Control) address is the source MAC of the ARP request message, and the arp reply message of the generation is sent to described in transmission
The main frame of ARP request message, so that main frame updates the ARP of itself using the target MAC (Media Access Control) address in the arp reply message,
Prevent the ARP aging of main frame.
In preferred embodiment of the present invention, if being exchanged after detecting that the interchanger is normal with control device connection
Machine receives the service message for the inter-host communication for establishing ARP, first by interchanger by the purpose MAC of the service message
The message information such as location and purpose IP address is matched with the flow table item that itself prestores, if matching, by the service message
Corresponding main frame is forwarded to by corresponding to exit port in the flow table item with matching.Such as the service message is that VM1 and VM2 is led to
During the service message of letter, interchanger preserves VM1 and VM2 flow table item, thus the service message target MAC (Media Access Control) address and
When purpose IP address matches with flow table item, the service message is forwarded to VM2 by VM1-Port2.
If the service message does not match any flow table item of interchanger, or the service message can match interchanger
The execution action of preservation is above to send the Table Miss (default flow table item) of control device, and the service message will above be delivered to control
Equipment processing.For example, when the service message is the service message that VM1 is communicated with VM4, the purpose IP address of the service message
For VM4 IP address, target MAC (Media Access Control) address is the gateway MAC address in the arp reply message answered in above-mentioned interchanger generation, due to handing over
Change planes and do not preserve corresponding flow table item, thus the target MAC (Media Access Control) address of the service message and purpose IP address can not
It is fitted on any flow table item, then by the service message by delivering to control device on VM1-Port3.
Control device prestores the host information of each main frame, and the host information is with including MAC Address and the IP of each main frame
Location, control device is after the service message is received, with checking the purpose IP of the service message according to the host information
When location mismatches with corresponding target MAC (Media Access Control) address, illustrate the target MAC (Media Access Control) address mistake of the service message, then then actively pass through
Interchanger issues gratuitous ARP list item to the main frame, i.e., the ARP for including correct target MAC (Media Access Control) address is sent to the main frame
List item update, so that main frame refreshes the corresponding ARP of its preservation according to the ARP update.Also, control
Control equipment changes target MAC (Media Access Control) address wrong in the service message using the correct target MAC (Media Access Control) address, afterwards by the industry
Business message is encapsulated into Pack-out messages, is sent by interchanger exit port corresponding with the correctly target MAC (Media Access Control) address
To main frame corresponding with the correctly target MAC (Media Access Control) address.In addition, control device is issued with transmission ARP request to interchanger
The forwarding flow table item of the main frame of message and the destination host asked, so that the subsequently received transmission ARP request message
, can be by without again control device will be delivered on the service message during service message that main frame is sent to the destination host asked
Interchanger is forwarded according to the forwarding flow table item.
Referring to Fig. 3, for another embodiment flow chart of arp reply Proxy Method of the present invention, the embodiment is applied in SDN
In network-based control equipment, comprise the following steps：
Step 301, if receiving the service message sent on interchanger after monitoring to be connected with interchanger normally, parse
The message information of the service message；
In the embodiment of the present invention, control device prestores the host information of each main frame, and the host information includes each main frame
MAC Address and IP address.If control device receives the business report sent on interchanger after being connected with the interchanger normally
Text, illustrate that the service message is the message for any flow table item for being not matched to interchanger, or can also match exchange
The service message that the execution action that machine preserves is the Table Miss (default flow table item) for above sending control device.Control device is connecing
After receiving the service message, then the message information of the service message is parsed, the message information includes the mesh of the service message
IP address and target MAC (Media Access Control) address.
Step 302, the message information of the service message is matched with the host information that itself prestores；
After the message information of the service message is parsed, by the purpose IP address of the message information and purpose MAC
Address is compared with the MAC Address of each main frame and IP address in the host information to prestore, if the purpose IP of message information
Location is consistent with the IP address of main frame in host information, but the target MAC (Media Access Control) address of the message information is with the IP of the main frame
When MAC Address corresponding to location (purpose IP address of the service message) is inconsistent, the message information of the service message is determined
The host information to be prestored with itself mismatches, then illustrates the target MAC (Media Access Control) address mistake of the service message.
Step 303, when the host information that the message information of the service message prestores with itself mismatches, by described
Interchanger issues ARP update to main frame.
In the target MAC (Media Access Control) address mistake of the service message, obtain in the host information with the message information
MAC Address corresponding to purpose IP address, gratuitous ARP list item is actively issued to the main frame by interchanger, i.e., according to the MAC
Address generates the ARP update, and the ARP update is issued to by the interchanger and sends institute
The main frame of service message is stated, so that the main frame updates the ARP table of the main frame preservation according to the ARP update
.Also, control device changes target MAC (Media Access Control) address wrong in the service message using the correct target MAC (Media Access Control) address, it
The service message is encapsulated into Pack-out messages afterwards, passes through exit port corresponding with the correctly target MAC (Media Access Control) address
Send to main frame corresponding with the correctly target MAC (Media Access Control) address.
In addition, control device can be issued to interchanger with the purpose for sending the main frame of ARP request message and being asked
The forwarding flow table item of main frame, so that the subsequently received main frame for sending ARP request message is sent out to the destination host asked
During the service message sent, without again control device will be delivered on the service message, it can be entered by interchanger according to the forwarding flow table item
Row forwarding.
It is another embodiment flow chart of arp reply Proxy Method of the present invention referring to Fig. 4, embodiment combination Fig. 1,
Arp reply agent process is described in detail by main frame (VM), interchanger (VS) interacting between control device, including it is following
Step：
Step 401, the ARP request message that interchanger Receiving Host is sent；
In the embodiment of the present invention, it is assumed that VM1, VM2 and VM4 need with one two layers of network between VM1 and VM3
Three layers of forwarding are wanted, interchanger VS1 preserves the flow table item between VM1 and VM2 and VM1 and VM3, do not preserved between VM1 and VM4
Flow table item.
, then can be with if VM1 is respectively necessary for being communicated with VM2, VM3 and VM4, but the ARP of itself aging
Send the ARP request message for the IP address that request purpose IP address is VM2, VM3 and VM4 respectively by VS-Port1.
Step 402, monitor interchanger and whether the connection of control device disconnects, if connection is normal, perform step 403, and
Terminate current process；If disconnecting, step 404 is performed；
Step 403, the ARP request message up sending control device that interchanger sends main frame, current process is terminated；
During default flow table item in the flow table item that prestores of ARP request message hit interchanger, the ARP that main frame is sent please
Message up sending control device is sought, and terminates current process.
Step 404, the message information carried in interchanger parsing ARP request message；
After VS1 receives the ARP request message that VM1 is sent respectively, then the message letter of each ARP request message is parsed respectively
Breath, the message information include source MAC, source IP address, inbound port and the purpose IP address of the ARP request message.
Step 405, interchanger checks whether there is the flow table item consistent with message information, if consistent, performs step
406, if inconsistent, perform step 407；
All flow table items preserved on traversal VS1, by source MAC, source IP address, the inbound port of each ARP request message
And the source MAC with the flow table item, source IP address, inbound port and purpose IP address are compared purpose IP address respectively
Compared with if consistent, it may be determined that the message information matches with the list item information.
In the embodiment of the present invention, because VM1 and VM2 are with one two layers of network, and VS1 preserve VM1 and VM2 it
Between flow table item, therefore when being matched, the message information in the ARP messages for the request VM2 that VM1 is sent can match
List item information in the flow table item that VS1 prestores, that is, determine that the message information matches with the list item information, illustrate that VS1 prestores
Flow table item in have the flow table item consistent with message information, and perform step 406.
In VM1 requests VM3 MAC Address, because VM1 and VM3 is not in the same IP address network segment, VM1 is request VM3's
During MAC Address, the purpose IP address in ARP request message can be changed to the IP address of gateway, then because VS1 is not preserved
VM1 and gateway flow table item, therefore when being matched, can not be matched in the flow table item of interchanger and the ARP request message
The consistent flow table item of purpose IP address；When VM1 asks VM4 MAC Address, although VM1 and VM4 in the same IP address network segment,
But because VM1 and VM4 is carries out ARP study first, the VM1 and VM4 flow table item are not preserved on interchanger, therefore carrying out
During matching, the flow table item consistent with the purpose IP address of the VM4 can not be also matched in the flow table item of interchanger.In above two
During situation, step 407 is performed.
Step 406, corresponding target MAC (Media Access Control) address in the flow table item is obtained, arp reply report is generated according to target MAC (Media Access Control) address
Text, and perform step 409.
When VM1 asks VM2 target MAC (Media Access Control) address, the message information in the ARP request message for the request VM2 that VM1 is sent can
To match the list item information in the flow table item that VS1 prestores, now, acquired target MAC (Media Access Control) address is the matching flow table item
In corresponding MAC Address (VM2 MAC Address).VS1 can replace control device to be generated according to the VM2 of acquisition MAC Address
Arp reply message, the source MAC of the arp reply message are the target MAC (Media Access Control) address of the flow table item, the arp reply report
The target MAC (Media Access Control) address of text is the source MAC of the ARP request message.
Step 407, interchanger checks whether there is consistent with source MAC, source IP address and inbound port in Match domains,
And action domains carry out the flow table item consistent with the target MAC (Media Access Control) address in match domains of the source MAC after MAC Address replacement, if
It is to perform step 408, otherwise generation is not answered, and terminates current process.
For ask VM3 and VM4 ARP request message, can according to the source MAC of the ARP request message with
And source IP address is compared with the source MAC and source IP address of the flow table item, if the source MAC of ARP request message
Location and source IP address are consistent with the source MAC and source IP address of the flow table item, and the inbound port of the flow table item with
Receive that the switch ports themselves of the ARP request message are consistent, then further check with the source MAC of ARP request message and
Whether source MAC and target MAC (Media Access Control) address, i.e. action domain have modified in action domains in the consistent flow table item of source IP address
Whether there occurs the action that MAC Address is replaced, if so, the mesh in action domains after replacement in source MAC and match domains
MAC Address it is consistent when, determine that the message information matches with the list item information, go to step 408, otherwise generation is not answered, and ties
Beam current process.
Step 408, the MAC Address for obtaining gateway generates arp reply message according to gateway MAC address.
For VM1 requests VM3 and VM4 ARP request message, i.e., main frame and the purpose asked are not preserved in interchanger
During corresponding flow table item between main frame, the MAC Address of gateway is obtained as target MAC (Media Access Control) address.Asked getting ARP request message
After the target MAC (Media Access Control) address asked, VS1 can replace control device to generate arp reply report according to the MAC Address of the gateway of the acquisition
Text, the source MAC of the arp reply message are the MAC Address of gateway, and the target MAC (Media Access Control) address of the arp reply message is institute
State the source MAC of ARP request message.
Step 409, the arp reply message of generation is issued to the main frame for sending ARP request message by interchanger.
Step 410, if control device receives the service message sent on interchanger after being connected with interchanger normally, solve
Analyse the message information of the service message.
In preferred embodiment of the present invention, if being exchanged after detecting that the interchanger is normal with control device connection
Machine receives the service message of the inter-host communication with ARP, and interchanger is first by the target MAC (Media Access Control) address of the service message
And the message information such as purpose IP address is matched with the flow table item that itself prestores, if the service message does not match interchanger
Any flow table item, or the service message can match the execution action of interchanger preservation above to send control device
Table Miss (default flow table item).Now, the service message will above be delivered to control device processing.For example, the service message
During the service message to be communicated with VM4 for VM1, the purpose IP address of the service message is VM4 IP address, purpose MAC
Location is the gateway MAC address in the arp reply message answered in above-mentioned interchanger generation, because interchanger does not preserve VM1 and VM4 stream
List item, therefore can not match any flow table item in the target MAC (Media Access Control) address and purpose IP address of the service message, then by this
Service message on VM1-Port3 by delivering to control device.
Control device obtains the message information of the service message, message letter in the service message sent on receiving this
Breath includes the purpose IP address and target MAC (Media Access Control) address of service message.For example, it is that VM1 is communicated with VM4 in the service message
Service message when, the purpose IP address of the service message is VM4 IP address, and target MAC (Media Access Control) address is to answer in above-mentioned interchanger generation
Arp reply message in gateway MAC Address.
Step 411, control device is matched the message information of the service message with the host information that itself prestores；
If the host information that the message information of the service message prestores with itself mismatches, step 414 is performed；
Control device prestores the host information of each main frame, the MAC Address of the host information including each main frame, IP address with
And corresponding port information, control device find the purpose of the service message after the message information of the service message is parsed
IP address is VM4 IP address, and target MAC (Media Access Control) address (is replied for the MAC Address of gateway in the arp reply message that interchanger generation is answered
Gateway MAC address).So by the VM4 of service message information IP address and target MAC (Media Access Control) address and each master to prestore
The MAC Address and IP address of machine are compared, consistent with the IP address of VM4 in host information in the IP address of the VM4, but mesh
MAC Address MAC Address corresponding with the IP address of the VM4 it is inconsistent when, determine the message information of the service message with
The host information itself to prestore mismatches, then illustrates the target MAC (Media Access Control) address mistake of the service message.
Step 412, MAC Address corresponding with the purpose IP address of the message information in the host information is obtained, is led to
Cross the interchanger and issue ARP update to main frame, and service message is sent to corresponding destination host；
In the target MAC (Media Access Control) address mistake of the service message, obtain in the host information with the message information
MAC Address (VM4 MAC Address) corresponding to purpose IP address (VM4 IP address), actively by interchanger under the VM1
Gratuitous ARP is sent out, i.e., the ARP update is generated according to VM4 MAC Address, the ARP update is passed through
The interchanger is issued to VM1.Also, control device is changed wrong in the service message using the MAC Address of the VM4
Target MAC (Media Access Control) address, the service message is encapsulated into Pack-out messages afterwards, by it is corresponding with VM4 MAC Address go out
Port is sent to VM4.
Step 416, control device is issued with the purpose master for sending the main frame of ARP request message and being asked to interchanger
The forwarding flow table item of machine；
Control device issues the forwarding flow table item between VM1 and VM4 to interchanger.
Step 417, the ARP update and forwarding flow table item that interchanger receiving control apparatus issues；
Step 418, ARP update is issued to the main frame for sending the service message by interchanger；
After interchanger receives the ARP update that control device issues, the ARP update is sent
To VM1, so that VM1 updates the ARP of its preservation according to the ARP update.
Step 419, interchanger preserves the forwarding flow table item；
Interchanger receives and preserved the forwarding flow table item between the VM1 and VM4 that control device issues, so that subsequently received
, can be by interchanger according to this turn without again control device will be delivered on the service message during service message that VM1 is sent to VM4
Hair flow table item is forwarded.
Corresponding with the embodiment of arp reply Proxy Method of the present invention, present invention also offers arp reply agent apparatus
Embodiment.
The embodiment of arp reply agent apparatus of the present invention can be applied on the interchanger in SDN.The device embodiment can
To be realized by software, can also be realized by way of hardware or software and hardware combining.Exemplified by implemented in software, as one
Device on logical meaning, it is by corresponding computer program instructions in nonvolatile memory by the CPU of equipment where it
Read what operation in internal memory was formed.For hardware view, as shown in figure 5, being set where arp reply agent apparatus of the present invention
A kind of standby hardware structure diagram, in addition to the CPU shown in Fig. 5, internal memory, the network port and nonvolatile memory, implement
Equipment in example where device can also generally include other hardware, such as be responsible for the forwarding chip of processing message；From hardware
The equipment is also possible to be distributed equipment from structure, may include multiple interface cards, to be reported in hardware view
The extension of text processing.
It is the example structure schematic diagram of arp reply agent apparatus of the present invention referring to Fig. 6, its device in essence
It is a logic device.In the present embodiment, exemplified by implemented in software, the arp reply agent apparatus can on logic level
With including：Message receiving unit 601, the first packet parsing unit 602, first information matching unit 603, MAC Address obtain single
In member 604 and message generation, answer unit 605.Wherein：
Message receiving unit 601, the ARP request message sent for Receiving Host；
First packet parsing unit 602, during for detecting that the interchanger and control device disconnect, described in parsing
The message information of ARP request message；
First information matching unit 603, the table of the flow table item to be prestored for judging the message information and the interchanger
Whether item information matches；
MAC Address acquiring unit 604, for when the message information matches with the list item information, obtaining the table
Purpose medium access control MAC Address in item information；
In message generation, answers unit 605, for sending arp reply message to the main frame according to the target MAC (Media Access Control) address.
Further, described device can also include flow table item matching unit 606, for detect the interchanger with
The control device receives when connecting normal sends the service message that the main frame of the ARP request message is sent, by the industry
Business message is matched with the flow table item that itself prestores；If the service message matches default flow table item, by the service message
On deliver to control device so that the host information that control device prestores the message information of the service message with itself is compared
It is right, and the message information and host information issue ARP to main frame by the interchanger and refresh report when inconsistent
Text.
Refer to Fig. 7, the first information matching unit 603 in Fig. 6 can specifically include：First coupling subelement 6031 with
And second coupling subelement 6032.In order to which example is convenient, above-mentioned two subelement is also show in Fig. 6, can in practical application
Only to set any of which subelement as needed.Wherein, the first coupling subelement 6031 is used for the ARP request message
Source MAC, source IP address, inbound port and purpose IP address respectively the source MAC with the flow table item, source IP address,
Inbound port and purpose IP address are compared, if consistent, it is determined that the message information matches with the list item information；The
Two coupling subelements 6032, for the source MAC and source IP address in the ARP request message and the source of the flow table item
MAC Address and source IP address are consistent, and switch ports themselves of the inbound port of the flow table item with receiving the ARP request message
When consistent, determine that the message information matches with the list item information；
Refer to Fig. 8, the MAC Address acquiring unit 604 in Fig. 6 can specifically include purpose MAC and obtain subelement 6041
It is convenient for example or gateway MAC obtains subelement 6042, show that purpose MAC obtains subelement 6041 and net in Fig. 8 simultaneously
Close MAC and obtain subelement 6042, wherein：Purpose MAC obtains subelement 6041, the purpose in list item information for obtaining matching
MAC Address；Gateway MAC obtains subelement 6042, for obtaining the MAC Address of gateway as the target MAC (Media Access Control) address.
Refer to Fig. 9, the message generation in Fig. 6, which answers unit 605, can specifically include：Message generates subelement 6051 and report
Literary transmission sub-unit 6052, wherein, message generation subelement 6051, for generating arp reply message, the arp reply message
Source MAC be the flow table item target MAC (Media Access Control) address, the target MAC (Media Access Control) address of the arp reply message asks for the ARP
Seek the source MAC of message；Message transmission sub-unit 6052, for sending the arp reply message of generation to the main frame.
Referring to Figure 10, the message receiving unit 601 can also include receiving subelement 6011 and issue subelement
6012.Wherein：Receiving subelement 6011, the ARP update sent for receiving control apparatus, the ARP brush
When new message is that host information that the message information of the service message received in control device prestores with itself is inconsistent, according to looking into
The ARP update for the respective hosts information generation found；Subelement 6012 is issued, for the ARP to be refreshed
Message is issued to main frame corresponding with the host information.
Another embodiment of arp reply agent apparatus of the present invention can be applied on the control device in SDN.The device
Embodiment can be realized by software, can also be realized by way of hardware or software and hardware combining.Exemplified by implemented in software,
It is by corresponding computer in nonvolatile memory by the CPU of equipment where it as the device on a logical meaning
Programmed instruction reads what operation in internal memory was formed.It is equipment where arp reply agent apparatus of the present invention for hardware view
A kind of hardware structure diagram, convenient for example, interchanger where arp reply agent apparatus is also show in Fig. 5 is set with control
Standby hardware structure schematic diagram.In addition to the CPU shown in Fig. 5, internal memory, the network port and nonvolatile memory, implement
Equipment in example where device can also generally include other hardware, such as be responsible for the forwarding chip of processing message；From hardware
The equipment is also possible to be distributed equipment from structure, may include multiple interface cards, to be reported in hardware view
The extension of text processing.
Referring to Figure 11, for another example structure schematic diagram of arp reply agent apparatus of the present invention, it in essence should
Device is a logic device.In the present embodiment, exemplified by implemented in software, the arp reply agent apparatus is in logic level
On can include：Second packet parsing unit 1101, the second information matching unit 1102 and message issuance unit 1103.Its
In：
Second packet parsing unit 1101, for receiving what is sent on interchanger after monitoring to be connected with interchanger normally
Service message, parse the message information of the service message；
Second information matching unit 1102, for the host information that the message information of the service message prestores with itself
Matched；
Message issuance unit 1103, for the host information that is prestored in the message information of the service message with itself not
Timing, ARP update is issued to main frame by the interchanger.
As shown in figure 12, second information matching unit 1102 in Figure 11 can specifically include address comparison subunit
11021 and matching judgment subelement 11022.Wherein：Address comparison subunit 11021, for by the mesh of the message information
IP address and target MAC (Media Access Control) address be compared with the MAC Address and IP address of each main frame；Matching judgment subelement
11022, the mesh of the message information consistent with the IP address of main frame in host information for the purpose IP address in message information
MAC Address MAC Address corresponding with the IP address of the main frame it is inconsistent when, determine the message information of the service message with
The host information itself to prestore mismatches.
As shown in figure 13, the message issuance unit 1103 in Figure 11 can specifically include update generation subelement
11031 and update issue subelement 11032.Wherein：Update generates subelement 11031, obtains the main frame letter
MAC Address corresponding with the purpose IP address of the message information in breath, the ARP brush is generated according to the MAC Address
New message；Update issues subelement 11032, for the ARP update to be issued to by the interchanger
The main frame of the service message is sent, so that the main frame updates what the main frame preserved according to the ARP update
ARP.
As can be seen that the present invention is by detecting the interchanger from the embodiment of any of the above method and apparatus
When being disconnected with control device, judge that the list item information of its message information and flow table item is according to the ARP request message of reception
No matching, and arp reply message is sent to the main frame according to corresponding target MAC (Media Access Control) address in flow table item in matching, so as to
When interchanger and control device disconnect, arp reply message is replied by interchanger agent control device, with ensure main frame it
Between proper communication.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (16)
1. a kind of ARP response Proxy Method, applied to the interchanger in software defined network SDN, its
It is characterised by, methods described includes：
The ARP request message that Receiving Host is sent；
If detecting, the interchanger disconnects with control device, parses the message information of the ARP request message；
Judge whether the list item information for the flow table item that the message information prestores with the interchanger matches；
If the message information matches with the list item information, purpose medium access control MAC Address is obtained；
Arp reply message is sent to the main frame according to the target MAC (Media Access Control) address.
2. the method as described in claim 1, it is characterised in that the message information includes the source MAC of the ARP request message
Address, source IP address, inbound port and purpose IP address, the source MAC of the list item information including flow table item, purpose MAC,
Inbound port, source IP address and purpose IP address；
Whether the list item information of the flow table item for judging message information and being prestored with the interchanger matches specially：
By source MAC, source IP address, inbound port and the purpose IP address of the ARP request message respectively with the flow table
Source MAC, source IP address, inbound port and the purpose IP address of item are compared, if consistent, it is determined that the message letter
Breath matches with the list item information；
The acquisition target MAC (Media Access Control) address specifically includes：
Obtain the target MAC (Media Access Control) address in the list item information of matching.
3. the method as described in claim 1, it is characterised in that the message information includes the source MAC of the ARP request message
Address and source IP address, the list item information is with including source MAC, purpose MAC, inbound port and the source IP of flow table item
Location；
Whether the list item information of the flow table item for judging message information and being prestored with the interchanger matches specially：
If the source MAC and source IP address of the ARP request message are with the source MAC of the flow table item and source IP
Location is consistent, and the inbound port of the flow table item is consistent with the switch ports themselves for receiving the ARP request message, it is determined that the report
Literary information matches with the list item information；
The acquisition target MAC (Media Access Control) address specifically includes：
The MAC Address of gateway is obtained as the target MAC (Media Access Control) address.
4. method as claimed in claim 2 or claim 3, it is characterised in that described to be sent out according to the target MAC (Media Access Control) address to the main frame
The arp reply message is sent to be specially：
Arp reply message is generated, the source MAC of the arp reply message is the target MAC (Media Access Control) address of the flow table item, described
The target MAC (Media Access Control) address of arp reply message is the source MAC of the ARP request message；
The arp reply message of generation is sent to the main frame.
5. the method as described in claim 1, it is characterised in that methods described also includes：
The ARP update that receiving control apparatus is sent, the ARP update are the industry received in control device
When the host information that the message information of business message prestores with itself is inconsistent, generated according to the respective hosts information found
ARP update；
The ARP update is issued to main frame corresponding with the host information.
A kind of 6. arp reply Proxy Method, applied to the control device in SDN, it is characterised in that methods described includes：
If receiving the service message sent on interchanger after monitoring to be connected with interchanger normally, the service message is parsed
Message information；
The message information of the service message is matched with the host information that itself prestores；
When host information that the message information of the service message prestores with itself mismatches, by the interchanger to main frame
Issue ARP update.
7. method as claimed in claim 6, it is characterised in that the message information is with including the purpose IP of the service message
Location and target MAC (Media Access Control) address, the host information include the MAC Address and IP address of each main frame, described by service message
The host information that message information prestores with itself carries out matching and specifically included：
The MAC Address and IP address of the purpose IP address of the message information and target MAC (Media Access Control) address and each main frame are carried out
Compare；
If the purpose IP address of message information is consistent with the IP address of main frame in host information, the purpose MAC of the message information
When address MAC Address corresponding with the IP address of the main frame is inconsistent, determine the service message message information and itself
The host information to prestore mismatches.
8. method as claimed in claim 7, it is characterised in that described that ARP brush is issued to main frame by the interchanger
Newly message is specially：
MAC Address corresponding with the purpose IP address of the message information in the host information is obtained, according to the MAC Address
Generate the ARP update；
The ARP update is issued to the main frame for sending the service message by the interchanger, so that described
Main frame updates the ARP of the main frame preservation according to the ARP update.
A kind of 9. arp reply agent apparatus, applied to the interchanger in SDN, it is characterised in that described device includes：
Message receiving unit, the ARP request message sent for Receiving Host；
First packet parsing unit, during for detecting that the interchanger and control device disconnect, parse the ARP request
The message information of message；
First information matching unit, the list item information of the flow table item to be prestored for judging the message information with the interchanger are
No matching；
MAC Address acquiring unit, for when the message information matches with the list item information, obtaining target MAC (Media Access Control) address；
In message generation, answers unit, for sending arp reply message to the main frame according to the target MAC (Media Access Control) address.
10. device as claimed in claim 9, it is characterised in that the message information includes the source of the ARP request message
MAC Address, source IP address, inbound port and purpose IP address, the list item information include the source MAC of flow table item, purpose
MAC, inbound port, source IP address and purpose IP address；
The first information matching unit specifically includes：
First coupling subelement, for by the source MAC of the ARP request message, source IP address, inbound port and purpose IP
Address is respectively compared with the source MAC with the flow table item, source IP address, inbound port and purpose IP address, if homogeneous
Cause, it is determined that the message information matches with the list item information；
The MAC Address acquiring unit specifically includes：
Purpose MAC obtains subelement, the target MAC (Media Access Control) address in list item information for obtaining matching.
11. device as claimed in claim 9, it is characterised in that the message information includes the source of the ARP request message
MAC Address and source IP address, the list item information include source MAC, purpose MAC, inbound port and the source IP of flow table item
Address；
The first information matching unit specifically includes：
Second coupling subelement, for the source MAC and source IP address in the ARP request message and the flow table item
Source MAC and source IP address are consistent, and the inbound port of the flow table item exchanges generator terminal with receive the ARP request message
When mouth is consistent, determine that the message information matches with the list item information；
The MAC Address acquiring unit specifically includes：
Gateway MAC obtains subelement, for obtaining the MAC Address of gateway as the target MAC (Media Access Control) address.
12. the device as described in claim 10 or 11, it is characterised in that the message generation answers unit and specifically included：
Message generates subelement, and for generating arp reply message, the source MAC of the arp reply message is the flow table item
Target MAC (Media Access Control) address, the target MAC (Media Access Control) address of the arp reply message is the source MAC of the ARP request message；
Message transmission sub-unit, for sending the arp reply message of generation to the main frame.
13. device as claimed in claim 9, it is characterised in that the message receiving unit also includes：
Receiving subelement, for receiving control apparatus send ARP update, the ARP update be
When the host information that the message information for the service message that control device receives prestores with itself is inconsistent, according to the correspondence found
The ARP update of host information generation；
Subelement is issued, for the ARP update to be issued into main frame corresponding with the host information.
A kind of 14. arp reply agent apparatus, applied to the control device in SDN, it is characterised in that described device includes：
Second packet parsing unit, for receiving the business report sent on interchanger after monitoring to be connected with interchanger normally
Text, parse the message information of the service message；
Second information matching unit, for the host information progress that the message information of the service message prestores with itself
Match somebody with somebody；
Message issuance unit, when the host information for being prestored in the message information of the service message with itself mismatches, lead to
Cross the interchanger and issue ARP update to main frame.
15. device as claimed in claim 14, it is characterised in that the message information includes the purpose IP of the service message
Address and target MAC (Media Access Control) address, the host information include the MAC Address and IP address of each main frame, second information
Specifically included with unit：
Address comparison subunit, for by the MAC of the purpose IP address of the message information and target MAC (Media Access Control) address and each main frame
Address and IP address are compared；
Matching judgment subelement, institute consistent with the IP address of main frame in host information for the purpose IP address in message information
State message information target MAC (Media Access Control) address MAC Address corresponding with the IP address of the main frame it is inconsistent when, determine the business report
The host information that the message information of text prestores with itself mismatches.
16. device as claimed in claim 15, it is characterised in that the message issuance unit specifically includes：
Update generates subelement, obtains MAC corresponding with the purpose IP address of the message information in the host information
Address, the ARP update is generated according to the MAC Address；
Update issues subelement, for the ARP update to be issued to described in transmission by the interchanger
The main frame of service message, so that the main frame updates the ARP of the main frame preservation according to the ARP update.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410498475.8A CN104219340B (en) | 2014-09-25 | 2014-09-25 | A kind of arp reply Proxy Method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410498475.8A CN104219340B (en) | 2014-09-25 | 2014-09-25 | A kind of arp reply Proxy Method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104219340A CN104219340A (en) | 2014-12-17 |
| CN104219340B true CN104219340B (en) | 2018-01-09 |
Family
ID=52100464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410498475.8A Active CN104219340B (en) | 2014-09-25 | 2014-09-25 | A kind of arp reply Proxy Method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104219340B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921610A (en) * | 2015-12-25 | 2017-07-04 | 华为技术有限公司 | Access control method and the network equipment |
| CN106921553B (en) * | 2015-12-28 | 2020-04-17 | 中移(苏州)软件技术有限公司 | Method and system for realizing high availability in virtual network |
| CN107181681B (en) * | 2016-03-10 | 2022-02-25 | 中兴通讯股份有限公司 | SDN two-layer forwarding method and system |
| CN106101297B (en) * | 2016-06-02 | 2019-07-05 | 新华三技术有限公司 | A kind of message answer method and device |
| CN106059929A (en) * | 2016-06-02 | 2016-10-26 | 杭州华三通信技术有限公司 | Message responding method and device |
| CN106231003B (en) * | 2016-07-28 | 2019-09-17 | 新华三技术有限公司 | A kind of address distribution method and device |
| CN106302860B (en) * | 2016-09-14 | 2020-04-10 | 上海斐讯数据通信技术有限公司 | SDN-based free address resolution protocol sending method, device and system |
| CN106302028B (en) * | 2016-09-22 | 2020-01-03 | 新华三技术有限公司 | Flow monitoring method and device |
| CN106973126A (en) * | 2017-05-26 | 2017-07-21 | 杭州迪普科技股份有限公司 | A kind of arp reply method and device |
| CN107800697B (en) * | 2017-10-26 | 2020-03-06 | 新华三技术有限公司 | Access authentication method and device |
| CN107623757B (en) * | 2017-10-27 | 2021-03-23 | 新华三技术有限公司 | Table entry updating method and device |
| CN107872368B (en) * | 2017-11-22 | 2020-06-16 | 华为技术有限公司 | Method and device for detecting accessibility of gateway in network node cluster and terminal |
| CN110224942B (en) * | 2018-03-01 | 2023-08-04 | 中兴通讯股份有限公司 | Message processing method, device and storage medium |
| CN110752998B (en) * | 2019-09-10 | 2023-01-20 | 广州西麦科技股份有限公司 | ARP message processing method and related device |
| CN111447295B (en) * | 2020-02-29 | 2022-04-01 | 新华三信息安全技术有限公司 | Hardware address negotiation method and device |
| CN112600951B (en) * | 2020-12-08 | 2022-07-29 | 杭州迪普信息技术有限公司 | Message forwarding method and device |
| CN115086272B (en) * | 2022-06-23 | 2023-11-21 | 杭州云合智网技术有限公司 | ARP (Address resolution protocol) answering substituting method, device, equipment and storage medium |
| CN115242748A (en) * | 2022-07-04 | 2022-10-25 | 裕太微电子股份有限公司 | Method for reducing power consumption of computer system and low-power-consumption computer system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938794A (en) * | 2012-11-14 | 2013-02-20 | 华为技术有限公司 | Address resolution protocol (ARP) message forwarding method, exchanger and controller |
| CN103905317A (en) * | 2012-12-28 | 2014-07-02 | 中兴通讯股份有限公司 | Message processing method and system for software-defined network |
| CN103973833A (en) * | 2014-05-05 | 2014-08-06 | 杭州华三通信技术有限公司 | Method and device for updating ARP cache |
-
2014
- 2014-09-25 CN CN201410498475.8A patent/CN104219340B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102938794A (en) * | 2012-11-14 | 2013-02-20 | 华为技术有限公司 | Address resolution protocol (ARP) message forwarding method, exchanger and controller |
| CN103905317A (en) * | 2012-12-28 | 2014-07-02 | 中兴通讯股份有限公司 | Message processing method and system for software-defined network |
| CN103973833A (en) * | 2014-05-05 | 2014-08-06 | 杭州华三通信技术有限公司 | Method and device for updating ARP cache |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104219340A (en) | 2014-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104219340B (en) | A kind of arp reply Proxy Method and device | |
| CN105763440B (en) | A kind of method and apparatus of message forwarding | |
| CN105554179B (en) | Dns resolution method, system in local area network | |
| US7376745B2 (en) | Network address generating system, network address generating apparatus and method, program and storage medium | |
| CN106936939A (en) | A kind of message processing method, relevant apparatus and NVO3 network systems | |
| CN104660469B (en) | A kind of method for detecting connectivity and relevant device of double layer network | |
| CN105227466B (en) | Communication processing method and device | |
| CN104780139B (en) | A kind of defence method and system based on MAC Address attack | |
| US8472420B2 (en) | Gateway device | |
| CN110505621A (en) | A kind of processing method and processing device of terminal transfer | |
| CN106656869A (en) | Information synchronization method and system in frame type device | |
| CN107241313A (en) | A kind of method and device of anti-MAC extensive aggressions | |
| CN106101297B (en) | A kind of message answer method and device | |
| CN107623757A (en) | Entry updating method and apparatus | |
| CN108667732A (en) | A kind of message forwarding method and device | |
| CN106657434A (en) | Method and device for checking IP address | |
| CN107547346A (en) | A kind of message transmitting method and device | |
| CN104660597A (en) | Three-layer authentication method and device as well as three-layer authentication exchanger | |
| CN109189549A (en) | Virtual machine migration method and device | |
| CN104486217B (en) | The message forwarding method and equipment of across a network | |
| CN103780494B (en) | A kind of user information acquiring method and device | |
| CN108123857A (en) | A kind of connection control method and device | |
| CN102572013B (en) | A kind of method and system realizing proxy ARP based on gratuitous ARP | |
| CN109246016A (en) | Message processing method and device across VXLAN | |
| CN104219240B (en) | A kind of main frame learning method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant after: Xinhua three Technology Co., Ltd. Address before: 310052 Binjiang District Changhe Road, Zhejiang, China, No. 466, No. Applicant before: Huasan Communication Technology Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |