CN106790411A - The non-polymeric port cascade system and method for virtual switch and physical switches - Google Patents
The non-polymeric port cascade system and method for virtual switch and physical switches Download PDFInfo
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- CN106790411A CN106790411A CN201611082198.8A CN201611082198A CN106790411A CN 106790411 A CN106790411 A CN 106790411A CN 201611082198 A CN201611082198 A CN 201611082198A CN 106790411 A CN106790411 A CN 106790411A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/15—Interconnection of switching modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/70—Virtual switches
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Abstract
The invention discloses a kind of virtual switch and the non-polymeric port cascade system and method for physical switches, it is related to network technique field.The system includes presetting module, interception module and screening module；Presetting module is limited for creating mac learning restricted attributes variable in virtual port, and virtual port being set into mac learning；Interception module is used to for virtual switch to be forwarded to screening module from the message that the limited virtual port of mac learning receives is set to；Screening module is used to calculate the difference of source MAC reception time of the recent renewal time of corresponding port and the message in mac address table of message, rejects the message of time threshold of the difference less than setting, and the message that will do not rejected sends back virtual switch.The present invention ensures virtual machine proper communication so that physical switches need not support port trunking, reduces the lower deployment cost and management cost of cloud computation data center.
Description
The present invention relates to field of cloud calculation, the non-polymeric port of a kind of virtual switch and physical switches is specifically related to
Cascade system and method.
Background technology
Cloud computation data center includes multiple physical servers, run on each physical server multiple virtual machines and
One virtual switch, multiple virtual machines are connected with the virtual switch, the thing that the virtual switch passes through physical server
Reason network interface card cascaded physical interchanger, so as to realize all virtual machine network interconnections.In order to expand the service bandwidth of virtual machine, generally
The polylith physical network card of physical server is bound into a virtual port, and the virtual port is added into virtual switch, made
The service bandwidth of virtual machine realizes load balancing by polylith physical network card.As shown in figure 1, a virtual machine passes through Microsoft Loopback Adapter
Vnet1 is connected with virtual switch, and the physical network card eth0 and eth1 of physical server are connected with physical switches respectively, and
Eth0 and eth1 are connected after being bound into virtual port bond with virtual switch.This method will cause under certain particular case
Virtual machine communication is abnormal, for example, when virtual machine sends a broadcasting packet, the broadcasting packet passes through Microsoft Loopback Adapter vnet1
Virtual switch is reached, virtual switch is calculated according to medium access control (Media Access Control, MAC) address learning
Method records the source MAC of the broadcasting packet and the corresponding relation of Microsoft Loopback Adapter vnet1, and the broadcasting packet is forwarded to virtually
Port bond is simultaneously sent to the port of physical switches from physical network card eth0, and be forwarded to for above-mentioned broadcasting packet by physical switches
On other all of the ports, the broadcasting packet reenters virtual switch from physical network card eth1 and virtual port bond, virtually
Interchanger updates the source MAC of the broadcasting packet and the corresponding relation of virtual port bond according to MAC address learning algorithm, i.e.,
The MAC Address corresponding ports of the virtual machine are changed into virtual port bond from Microsoft Loopback Adapter vnet1, cause hereafter to issue the virtual machine
Message virtual port bond will be forwarded to by mistake, rather than the Microsoft Loopback Adapter vnet1 for being forwarded to the virtual machine, cause virtual
The communication of machine is abnormal.Only when the virtual machine sends unicast message, virtual switch according to MAC address learning algorithm again
The source MAC of the unicast message and the corresponding relation of Microsoft Loopback Adapter vnet1 are recorded, because physical switches will not be by the unicast
Message is forwarded back to virtual port bond, and hereafter the communication recovery of virtual machine is normal.And in still yet another particular case, for example,
After virtual machine is from present physical server migration to another physical server, the source MAC ground of the message that the virtual machine sends
Location is constant, but, the message that the virtual machine sends from the port of another physical server is forwarded to above-mentioned virtual port
During bond, the virtual switch on present physical server should update according to MAC address learning algorithm and be sent from the virtual machine
Message the corresponding port of source MAC, will otherwise cause the communication of virtual machine abnormal.
In order to solve the above problems, will bind what network interface cards were connected with physical server is multiple generally in physical switches
Port is set to a port aggregation group, and the port trunking group is treated as a logic port by physical switches, so as to avoid thing
Reason interchanger is forwarded back to above-mentioned logic port again after the logic port receives broadcasting packet, so avoid virtual switch from
The virtual port of binding receives the broadcasting packet that virtual machine sends causes mac address table to be updated by mistake.But, the above method is deposited
In following defect：Because physical switches need to support port trunking function, the physics that each physical network card bound is connected
Switch ports themselves will set port trunking group, and cheap physical switches do not support port trunking function generally, or only carry
For the port trunking group of negligible amounts, therefore increased the lower deployment cost and management cost of cloud computation data center.
The content of the invention
For defect present in prior art, it is a primary object of the present invention to provide a kind of virtual switch and physics
The non-polymeric port cascade system of interchanger, another object of the present invention is to provide a kind of virtual switch and physical switches
Non-polymeric port Cascading Methods, ensure that virtual machine proper communication, and physical switches need not support port trunking, drop
The lower deployment cost and management cost of low cloud computation data center.
The present invention provides the non-polymeric port cascade system of a kind of virtual switch and physical switches, and virtual switch leads to
The virtual port for crossing multiple physical network cards binding of physical server is communicated to connect with physical switches, and the system includes default
Module, interception module and screening module；
The presetting module is used to create mac learning restricted attributes variable in virtual port, and virtual port is set to
Mac learning is limited；
The interception module is used for virtual switch from being set to the message that the limited virtual port of mac learning is received
It is forwarded to screening module；
The screening module is used for the recent renewal of the source MAC corresponding port in mac address table for calculating message
The difference of the reception time of time and the message, rejects the message of time threshold of the difference less than setting, and the report that will do not rejected
Text sends back virtual switch.
On the basis of above-mentioned technical proposal, the value of the mac learning restricted attributes variable for mac learning is limited or
Mac learning is unrestricted.
On the basis of above-mentioned technical proposal, the presetting module is additionally operable to set the time threshold, the time threshold
It is worth the renewal frequent degree for judging the corresponding port of source MAC in mac address table.
On the basis of above-mentioned technical proposal, the screening module is additionally operable to parse the message for receiving, and obtains institute
State the target MAC (Media Access Control) address and source MAC of message, and obtained from mac address table the corresponding port of the source MAC and
Its recent renewal time.
The present invention also provides the non-polymeric port Cascading Methods of a kind of virtual switch and physical switches, including step：
S1. presetting module creates mac learning restricted attributes variable in virtual port, and virtual port is set into MAC
Practise limited；
S2. interception module by virtual switch from being set to the message forwarding that the limited virtual port of mac learning is received
To screening module；
S3. screening module calculate message source MAC in mac address table the recent renewal time of corresponding port and
The difference of the reception time of the message, rejects the message of time threshold of the difference less than setting, and the message that will do not rejected sends
Return virtual switch.
On the basis of above-mentioned technical proposal, step S3 includes：
Screening module described in S31 is parsed to the message for receiving, and obtains the target MAC (Media Access Control) address and source MAC of the message
Address, and the corresponding port of the source MAC and its recent renewal time are obtained from mac address table；
The source MAC of screening module calculating message described in S32 is in mac address table during the recent renewal of corresponding port
Between and the message the reception time difference, reject the message of time threshold of the difference less than setting, and the message that will do not rejected
Send back virtual switch.
On the basis of above-mentioned technical proposal, step S3 is specifically included：
S321 judge to receive the virtual port of message with the source MAC of the message the corresponding end in mac address table
It is mouthful whether identical, if so, into S326；If it is not, into S322；
S322 detects whether the message is broadcasting packet, if so, into S323；If it is not, into S326；
Whether the virtual port that S323 detections receive message is set to mac learning and is limited, if so, into S324；If it is not, entering
Enter S326；
S324 judges whether the reception time of the message is less than the time threshold with the difference of the recent renewal time
Value, if so, into S325；If it is not, into S326；
S325 rejects the message；
The message is sent back virtual switch by S326.
On the basis of above-mentioned technical proposal, the value of the mac learning restricted attributes variable for mac learning is limited or
Mac learning is unrestricted.
On the basis of above-mentioned technical proposal, the presetting module sets the time threshold, and the time threshold is used for
Judge the renewal frequent degree of the corresponding port of source MAC in mac address table.
On the basis of above-mentioned technical proposal, the time threshold is 1 second.
Compared with prior art, advantages of the present invention is as follows：
(1) present invention is created in virtual port and sets mac learning restricted attributes variable, the virtual port to receiving message
Screened with the source MAC of the message broadcasting packet that corresponding port differs in mac address table, it is ensured that rejecting connects
With the broadcasting packet of the time threshold of the difference less than setting of recent renewal time between the time receiving, so as to ensure the positive normal open of virtual machine
Letter, improves the operational efficiency of cloud computation data center, lifts Consumer's Experience.
(2) port trunking need not be supported using physical switches of the invention, therefore, reduce cloud computation data center
Lower deployment cost and management cost, reduce maintenance time and expense.
(3) present invention is applied to various virtual switches, applied widely.
Brief description of the drawings
Fig. 1 is the connection diagram of virtual switch and physical switches；
Fig. 2 is the non-polymeric port cascade system schematic diagram of embodiment of the present invention virtual switch and physical switches；
Fig. 3 is the Cascading Methods flow chart of embodiment of the present invention virtual switch and physical switches；
Fig. 4 is the particular flow sheet of step S32.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Under normal circumstances, the broadcasting packet that virtual switch sends successively passes through Microsoft Loopback Adapter vnet1 and virtual port
Bond enters the time interval very little of virtual switch, and virtual switch two physical servers respectively from before and after migration
The time interval that the message that port sends is forwarded to virtual port bond is relatively long.
Based on above-mentioned principle, the embodiment of the present invention provides the non-polymeric port level of a kind of virtual switch and physical switches
Contact system, virtual port and physical switches communication link that virtual switch is bound by multiple physical network cards of physical server
Connect, it is shown in Figure 2, including presetting module, interception module and screening module.
Presetting module is used to create mac learning restricted attributes variable in virtual port, and virtual port is set into MAC
Practise limited.
The value of mac learning restricted attributes variable is that mac learning is limited or mac learning is unrestricted.
Presetting module is additionally operable to setting time threshold value, and source MAC is corresponding during time threshold is used to judge mac address table
The renewal frequent degree of port.
Time threshold can be 1 second with default setting.Due to the runnability and actual loading situation of different physical switches
Have differences, therefore, it can the flexible setting time threshold value of concrete condition according to different physical switches.
Interception module is used for virtual switch from being set to the message forwarding that the limited virtual port of mac learning is received
To screening module.
Screening module is used for the recent renewal time of the source MAC corresponding port in mac address table for calculating message
With the difference of the reception time of the message, the message of time threshold of the difference less than setting is rejected, and the message hair that will do not rejected
Send virtual switch back to.
Screening module is additionally operable to parse the message for receiving, and obtains the target MAC (Media Access Control) address and source MAC of message,
And the corresponding port of source MAC and its recent renewal time are obtained from mac address table.
Presetting module, interception module and screening module are in virtual switch.
The present invention created in virtual port and mac learning restricted attributes variable be set, to receive message virtual port and
The source MAC of the message broadcasting packet that corresponding port differs in mac address table is screened, it is ensured that is rejected and is received
Time is less than the broadcasting packet of the time threshold of setting with the difference of recent renewal time, so that ensure virtual machine proper communication,
The operational efficiency of cloud computation data center is improved, Consumer's Experience is lifted.
Port trunking need not be supported using physical switches of the invention, therefore, reduce cloud computation data center
Lower deployment cost and management cost, reduce maintenance time and expense.
Shown in Figure 3, the embodiment of the present invention provides the non-polymeric port level of a kind of virtual switch and physical switches
Linked method, including step：
S1. presetting module creates mac learning restricted attributes variable in virtual port, and virtual port is set into MAC
Practise limited.
S2. interception module by virtual switch from being set to the message forwarding that the limited virtual port of mac learning is received
To screening module.
S3. screening module calculate message source MAC in mac address table the recent renewal time of corresponding port and
The difference of the reception time of the message, rejects the message of time threshold of the difference less than setting, and the message that will do not rejected sends
Return virtual switch.
Step S3 includes：
S31 screening modules are parsed to the message for receiving, and obtain the target MAC (Media Access Control) address and source MAC of message, and
The corresponding port of source MAC and its recent renewal time are obtained from mac address table.
S32 screening modules calculate message source MAC in mac address table the recent renewal time of corresponding port and
The difference of the reception time of the message, rejects the message of time threshold of the difference less than setting, and the message that will do not rejected sends
Return virtual switch.
Shown in Figure 4, step S32 is specifically included：
S321 judges that receive the virtual port of message corresponding port is in mac address table with the source MAC of message
It is no identical, if so, into S326；If it is not, into S322.
Whether S322 detection messages are broadcasting packet, if so, into S323；If it is not, into S326.
Whether the virtual port that S323 detections receive message is set to mac learning and is limited, if so, into S324；If it is not, entering
Enter S326.
S324 judges whether the reception time of message is less than time threshold with the difference of recent renewal time, if so, into
S325；If it is not, into S326.
S325 rejects message.
Message is sent back virtual switch by S326.
The value of mac learning restricted attributes variable is that mac learning is limited or mac learning is unrestricted.
Presetting module setting time threshold value, time threshold is used to judge the corresponding port of source MAC in mac address table
Update frequent degree.Time threshold is 1 second.
The present invention be applied to various virtual switches, virtual switch can for Open vSwitch, Linux bridge,
VMware vSphere standard switchboards or VMware vSphere distribution switch, therefore, the scope of application of the invention
Extensively.
The present invention is described in further detail by taking the virtual switch Open vSwitch that increase income as an example below, to other classes
The virtual switch of type can similarly be obtained.
Virtual port and thing that virtual switch Open vSwitch are bound by multiple physical network cards of physical server
Reason switch communication connection, presetting module, interception module and screening module are arranged on the physical server.
Presetting module creates mac learning restricted attributes variable on virtual port, and mac learning restricted attributes variable is set
It is set to mac learning to be limited, and sets the renewal frequent degree for judging the corresponding port of source MAC in mac address table
Time threshold.
The mac learning restricted attributes variable of establishment can be named as mac-learning-limited, and mac learning is received
Limit attribute variable be configured, for example, mac-learning-limited can be set into true, represents the virtual port of binding
For mac learning is limited, mac-learning-limited is set to false, represents the virtual port of binding for mac learning is not received
Limit.
Time threshold is used to judge the renewal frequent degree of the corresponding port of source MAC in mac address table, can set
It it is 1 second, if the recent renewal for receiving time and source MAC corresponding port in mac address table of the message of message
The difference of time is less than 1 second, then judge that the corresponding port of source MAC of the message updates frequent.
The system is modified to the MAC address learning algorithm of virtual switch, specifically, in virtual switch Open
In vSwitch, MAC address learning algorithm is mac_learning_insert functions.
Specific method is：The present port of the message that virtual switch Open vSwitch are received is in_port, virtually
Interchanger Open vSwitch find the list item e of the source MAC of the message, the source MAC of the message in mac address table
Corresponding port is e->Port.ofp_port,
Proceed as follows：
A) in_port ports and the e- of the message are checked>Whether port.ofp_port is identical, if it is not, then turning b)；If so,
Turn e).
B) check whether the message is broadcasting packet, if so, then turning c)；If it is not, turning e).
C) the mac-learning-limited attributes of the in_port ports of the message are checked, if the attribute is true,
Then turn d)；If it is not, turning e).
D) difference of the recent renewal time in reception time and list item e is calculated, if above-mentioned difference is less than 1 second, is returned
NULL is returned, that is, rejects the message；If it is not, turning e).
E) message is sent to virtual switch Open vSwitch.
Virtual switch Open vSwitch then continue executing with the follow-up code of mac_learning_insert functions, i.e.,
Virtual switch is according to MAC address learning algorithm by the e- of the list item e of the source MAC of the message in mac address table>
Port.ofp_port is updated to in_port ports.
The present invention is created and sets mac learning restricted attributes variable in the virtual port of binding, to virtual port and source MAC
The broadcasting packet that the corresponding port in address differs is screened, it can be ensured that reject be set to mac learning it is limited work as front end
The mouth corresponding reception time is less than the broadcasting packet of time threshold with the difference of recent renewal time, so as to ensure that virtual machine is normal
Communication, improves the operational efficiency of cloud computation data center, lifts Consumer's Experience.
Port trunking need not be supported using physical switches of the invention, therefore, reduce cloud computation data center
Lower deployment cost and management cost, reduce maintenance time and expense.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
On the premise of the principle of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (10)
1. a kind of non-polymeric port cascade system of virtual switch and physical switches, virtual switch passes through physical server
Virtual port and physical switches of multiple physical network cards binding communicate to connect, it is characterised in that：The system includes default
Module, interception module and screening module；
The presetting module is used to create mac learning restricted attributes variable in virtual port, and virtual port is set into MAC
Practise limited；
The interception module is used for virtual switch from being set to the message forwarding that the limited virtual port of mac learning is received
To screening module；
The screening module is used for the recent renewal time of the source MAC corresponding port in mac address table for calculating message
With the difference of the reception time of the message, the message of time threshold of the difference less than setting is rejected, and the message hair that will do not rejected
Send virtual switch back to.
2. the non-polymeric port cascade system of virtual switch as claimed in claim 1 and physical switches, it is characterised in that：
The value of the mac learning restricted attributes variable is that mac learning is limited or mac learning is unrestricted.
3. the non-polymeric port cascade system of virtual switch as claimed in claim 1 and physical switches, it is characterised in that：
The presetting module is additionally operable to set the time threshold, and the time threshold is used to judge source MAC pair in mac address table
The renewal frequent degree of the port answered.
4. the non-polymeric port cascade system of virtual switch as claimed in claim 1 and physical switches, it is characterised in that：
The screening module is additionally operable to parse the message for receiving, and obtains the target MAC (Media Access Control) address and source MAC of the message,
And the corresponding port of the source MAC and its recent renewal time are obtained from mac address table.
5. a kind of non-polymeric port Cascading Methods based on system described in claim 1, it is characterised in that including step：
S1. presetting module creates mac learning restricted attributes variable in virtual port, and virtual port is set into mac learning receives
Limit；
S2. virtual switch is forwarded to sieve by interception module from the message that the limited virtual port of mac learning receives is set to
Modeling block；
S3. screening module calculates the source MAC of the message recent renewal time of corresponding port and the report in mac address table
The difference of the reception time of text, rejects the message of time threshold of the difference less than setting, and the message that will do not rejected sends back void
Intend interchanger.
6. non-polymeric port Cascading Methods as claimed in claim 5, it is characterised in that：Step S3 includes：
Screening module described in S31 is parsed to the message for receiving, and obtains the target MAC (Media Access Control) address and source MAC of the message,
And the corresponding port of the source MAC and its recent renewal time are obtained from mac address table；
Described in S32 screening module calculate message source MAC in mac address table the recent renewal time of corresponding port and
The difference of the reception time of the message, rejects the message of time threshold of the difference less than setting, and the message that will do not rejected sends
Return virtual switch.
7. non-polymeric port Cascading Methods as claimed in claim 5, it is characterised in that step S3 is specifically included：
S321 judges that receive the virtual port of message corresponding port is in mac address table with the source MAC of the message
It is no identical, if so, into S326；If it is not, into S322；
S322 detects whether the message is broadcasting packet, if so, into S323；If it is not, into S326；
Whether the virtual port that S323 detections receive message is set to mac learning and is limited, if so, into S324；If it is not, into
S326；
S324 judges whether the reception time of the message is less than the time threshold with the difference of the recent renewal time, if
It is, into S325；If it is not, into S326；
S325 rejects the message；
The message is sent back virtual switch by S326.
8. non-polymeric port Cascading Methods as claimed in claim 5, it is characterised in that：The mac learning restricted attributes variable
Value for mac learning is limited or mac learning is unrestricted.
9. non-polymeric port Cascading Methods as claimed in claim 5, it is characterised in that：The presetting module sets the time
Threshold value, the time threshold is used to judge the renewal frequent degree of the corresponding port of source MAC in mac address table.
10. non-polymeric port Cascading Methods as described in any one of claim 5 to 9, it is characterised in that：The time threshold is
1 second.
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| CN111556136B (en) * | 2020-04-26 | 2022-08-30 | 全球能源互联网研究院有限公司 | Data interaction method between internal containers of power edge Internet of things agent |
| CN114553798A (en) * | 2022-01-14 | 2022-05-27 | 奇安信科技集团股份有限公司 | Flow mirroring method, device, electronic equipment, medium and product |
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