CN106790411B - 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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- 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 the non-polymeric port cascade systems and method of a kind of virtual switch and physical switches, are related to network technique field.The system includes presetting module, interception module and screening module；Presetting module is used to create mac learning restricted attributes variable in virtual port, and sets mac learning for virtual port and be limited；Interception module is used to virtual switch being forwarded to screening module from the message that the limited virtual port of mac learning receives is set as；Screening module is used to calculate the difference of source MAC receiving time of the recent renewal time and message of corresponding port in mac address table of message, rejects the message that difference is less than the time threshold of setting, and the message that do not reject is sent back virtual switch.The present invention guarantees virtual machine normal communication, so that physical switches do not need to 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, are specifically related to the non-polymeric port of a kind of virtual switch and physical switches
Cascade system and method.
Background technique
Cloud computation data center includes multiple physical servers, run on each physical server multiple virtual machines and
One virtual switch, multiple virtual machines are connect with the virtual switch, the object which passes through physical server
Network interface card cascaded physical interchanger is managed, to realize all virtual machine network interconnections.In order to expand the service bandwidth of virtual machine, usually
The muti-piece physical network card of physical server is bound into a virtual port, and virtual switch is added in the virtual port, is made
The service bandwidth of virtual machine realizes load balancing by muti-piece physical network card.As shown in Figure 1, a virtual machine passes through Microsoft Loopback Adapter
Vnet1 is connect with virtual switch, and the physical network card eth0 and eth1 of physical server are connect with physical switches respectively, and
Eth0 and eth1 is connect after being bound into virtual port bond with virtual switch.This method will lead under certain specific condition
Virtual machine communication is abnormal, for example, the broadcasting packet passes through Microsoft Loopback Adapter vnet1 when virtual machine issues a broadcasting packet
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 relationship of Microsoft Loopback Adapter vnet1, and the broadcasting packet is forwarded to virtually
Above-mentioned broadcasting packet is forwarded to by port bond and the port that physical switches are sent to from physical network card eth0, physical switches
On other all of the port, which 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 relationship of virtual port bond according to MAC address learning algorithm, i.e.,
The MAC Address corresponding ports of the virtual machine become 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 be forwarded to the Microsoft Loopback Adapter vnet1 of the virtual machine, cause virtual
The communication of machine is abnormal.Only when the virtual machine issue unicast message when, virtual switch according to MAC address learning algorithm again
The source MAC of the unicast message and the corresponding relationship of Microsoft Loopback Adapter vnet1 are recorded, since 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 for the message which issues
Location is constant, and still, which is forwarded to above-mentioned virtual port from the message that the port of another physical server issues
When bond, the virtual switch on present physical server, which should be updated according to MAC address learning algorithm from the virtual machine, to be issued
Message the corresponding port of source MAC, otherwise the communication of virtual machine will be caused abnormal.
To solve the above-mentioned problems, it will be connect with the multiple binding network interface cards of physical server usually in physical switches
Port is set as a port aggregation group, which is treated as a logic port by physical switches, to avoid object
Manage interchanger after the logic port receives broadcasting packet again be forwarded back to above-mentioned logic port, and then avoid virtual switch from
The broadcasting packet that the virtual port of binding receives virtual machine sending causes mac address table to be updated by mistake.But the above method is deposited
In following defect: since physical switches need support port trunking function, the physics that the physical network card of each binding is connected
Port trunking group will be arranged in switch port, and cheap physical switches do not support port trunking function usually, or only mention
For the port trunking group of negligible amounts, therefore increase the lower deployment cost and management cost of cloud computation data center.
Summary of the invention
In view of the deficiencies in the prior art, the main purpose of the present invention is 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, can guarantee virtual machine normal communication, and physical switches do not need to 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 is logical
The virtual port and physical switches for crossing multiple physical network cards binding of physical server communicate to connect, and the system comprises default
Module, interception module and screening module；
The presetting module is used to create mac learning restricted attributes variable in virtual port, and sets virtual port to
Mac learning is limited；
The interception module is used for virtual switch from the message for being set as the limited virtual port of mac learning and receiving
It is forwarded to screening module；
The screening module is used to calculate the recent renewal of source MAC corresponding port in mac address table of message
The difference of the receiving time of time and the message rejects the message that difference is less than the time threshold of setting, and the report that will do not rejected
Text sends back virtual switch.
Based on the above technical solution, the value of the mac learning restricted attributes variable be mac learning it is limited or
Mac learning is unrestricted.
Based on the above technical solution, the presetting module is also used to set the time threshold, the time threshold
Value is for determining the update frequent degree of the corresponding port of source MAC in mac address table.
Based on the above technical solution, the screening module is also used to parse the message received, obtains institute
State the target MAC (Media Access Control) address and source MAC of message, and obtain 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, comprising steps of
S1. presetting module creates mac learning restricted attributes variable in virtual port, and sets MAC for virtual port
It practises limited；
S2. interception module forwards virtual switch from the message that the limited virtual port of mac learning receives is set as
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 receiving time of the message rejects the message that difference is less than the time threshold of setting, and the message that do not reject is sent
Return virtual switch.
Based on the above technical solution, step S3 includes:
Screening module described in S31 parses the message received, 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 the calculating message of screening module described in S32 is in mac address table when the recent renewal of corresponding port
Between and the message receiving time difference, reject the message that difference is less than the time threshold of setting, and the message that will do not rejected
Send back virtual switch.
Based on the above technical solution, step S3 is specifically included:
S321 judgement receive the virtual port of message with the source MAC of the message the corresponding end in mac address table
Whether mouth is 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 detection receives message, which is set as mac learning, is limited, if so, into S324；If it is not, into
Enter S326；
S324 judges whether the receiving time of the message and the difference of the recent renewal time are less than the time threshold
Value, if so, into S325；If it is not, into S326；
S325 rejects the message；
The message is sent back virtual switch by S326.
Based on the above technical solution, the value of the mac learning restricted attributes variable be mac learning it is limited or
Mac learning is unrestricted.
Based on the above technical solution, the presetting module sets the time threshold, and the time threshold is used for
Determine the update frequent degree of the corresponding port of source MAC in mac address table.
Based on the above technical solution, the time threshold is 1 second.
Compared with prior art, advantages of the present invention is as follows:
(1) present invention creates in virtual port and mac learning restricted attributes variable is arranged, to the virtual port for receiving message
The corresponding different broadcasting packet in port is screened in mac address table with the source MAC of the message, it is ensured that rejecting connects
It is less than the broadcasting packet of the time threshold of setting between time receiving with the difference of recent renewal time, to guarantee the positive normal open of virtual machine
Letter improves the operational efficiency of cloud computation data center, promotes user experience.
(2) it does not need that port trunking is supported therefore to reduce cloud computation data center using physical switches of the invention
Lower deployment cost and management cost, reduce maintenance time and expense.
(3) present invention is suitable for a variety of virtual switches, applied widely.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of virtual switch and physical switches；
Fig. 2 is the non-polymeric port cascade system schematic diagram of virtual switch of the embodiment of the present invention and physical switches；
Fig. 3 is the Cascading Methods flow chart of virtual switch of the embodiment of the present invention and physical switches；
Fig. 4 is the specific flow chart of step S32.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
Under normal conditions, the broadcasting packet that virtual switch issues successively passes through Microsoft Loopback Adapter vnet1 and virtual port
Bond enters the time interval very little of virtual switch, and virtual switch is respectively from two physical servers before and after migration
The time interval that the message that port issues is forwarded to virtual port bond is relatively long.
Based on the above principles, the embodiment of the present invention provides the non-polymeric port level of a kind of virtual switch and physical switches
Connection system, the virtual port and physical switches communication link that virtual switch passes through multiple physical network cards binding of physical server
It connects, 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 sets MAC for virtual port
It practises limited.
The value of mac learning restricted attributes variable is that mac learning is limited or mac learning is unrestricted.
Presetting module is also used to setting time threshold value, and time threshold is for determining that source MAC is corresponding in mac address table
The update frequent degree of port.
Time threshold can the default setting is 1 second.Due to the runnability and actual loading situation of different physical switches
It has differences, it therefore, can be according to the flexible setting time threshold value of concrete condition of different physical switches.
Interception module is used to forward virtual switch from the message that the limited virtual port of mac learning receives is set as
To screening module.
Screening module is used to calculate the recent renewal time of source MAC corresponding port in mac address table of message
With the difference of the receiving time of the message, the message that difference is less than the time threshold of setting is rejected, and the message that do not reject is sent out
Send virtual switch back to.
Screening module is also used to parse the message received, 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 set in virtual switch.
The present invention creates and is arranged mac learning restricted attributes variable in virtual port, to receive message virtual port and
The source MAC of the message corresponding different broadcasting packet in port in mac address table is screened, it is ensured that is rejected and is received
The difference of time and recent renewal time is less than the broadcasting packet of the time threshold of setting, thus guarantee virtual machine normal communication,
The operational efficiency of cloud computation data center is improved, user experience is promoted.
It does not need that port trunking is supported therefore to reduce cloud computation data center using physical switches of the invention
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, comprising steps of
S1. presetting module creates mac learning restricted attributes variable in virtual port, and sets MAC for virtual port
It practises limited.
S2. interception module forwards virtual switch from the message that the limited virtual port of mac learning receives is set as
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 receiving time of the message rejects the message that difference is less than the time threshold of setting, and the message that do not reject is sent
Return virtual switch.
Step S3 includes:
S31 screening module parses the message received, 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.
S32 screening module calculate message source MAC in mac address table the recent renewal time of corresponding port and
The difference of the receiving time of the message rejects the message that difference is less than the time threshold of setting, and the message that do not reject is sent
Return virtual switch.
Shown in Figure 4, step S32 is specifically included:
S321 judgement receives the virtual port of message, and the corresponding port in mac address table is 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 detection receives message, which is set as mac learning, is limited, if so, into S324；If it is not, into
Enter S326.
S324 judges whether the receiving time of message and the difference of recent renewal time are less than time threshold, 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 for determining the corresponding port of source MAC in mac address table
Update frequent degree.Time threshold is 1 second.
The present invention be suitable for a variety of virtual switches, virtual switch can for Open vSwitch, Linux bridge,
VMware vSphere standard switchboard or VMware vSphere distribution switch, therefore, the scope of application of the invention
Extensively.
Invention is further described in detail by taking the virtual switch Open vSwitch that increases income as an example below, to other classes
The virtual switch of type can similarly obtain.
The virtual port and object that virtual switch Open vSwitch is bound by multiple physical network cards of physical server
Switch communication connection is managed, presetting module, interception module and screening module are mounted 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 limited to be set to mac learning, and sets the update frequent degree for determining the corresponding port of source MAC in mac address table
Time threshold.
The mac learning restricted attributes variable of creation can be named as mac-learning-limited, and to mac learning by
Limit attribute variable is configured, for example, mac-learning-limited can be set as true, indicates the virtual port of binding
Limited for mac learning, mac-learning-limited is set as false, indicate binding virtual port be mac learning not by
Limit.
Time threshold is used to determine the update frequent degree of the corresponding port of source MAC in mac address table, can be set
It is 1 second, if the recent renewal of the receiving time of message and the source MAC of the message corresponding port in mac address table
It is frequent then to determine that the corresponding port of the source MAC of the message updated less than 1 second for the difference of time.
This system modifies to the MAC address learning algorithm of virtual switch, specifically, in virtual switch Open
In vSwitch, MAC address learning algorithm is mac_learning_insert function.
Method particularly includes: the present port for the message that virtual switch Open vSwitch is received is in_port, virtually
Interchanger Open vSwitch finds 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,
It proceeds as follows:
A) check whether the port in_port and the e- > port.ofp_port of the message are identical, if it is not, then turning b)；If so,
Turn e).
B) check whether the message is broadcasting packet, if so, turning c)；If it is not, turning e).
C) the mac-learning-limited attribute of the port in_port of the message is checked, if the attribute is true,
Then turn d)；If it is not, turning e).
D) difference for calculating the recent renewal time in receiving time and list item e, if above-mentioned difference was returned less than 1 second
NULL is returned, that is, rejects the message；If it is not, turning e).
E) virtual switch Open vSwitch is sent by message.
Virtual switch Open vSwitch then continues to execute the subsequent code of mac_learning_insert function, i.e.,
Virtual switch 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 the port in_port.
The present invention creates in the virtual port of binding and mac learning restricted attributes variable is arranged, to virtual port and source MAC
The different broadcasting packet in the corresponding port in address is screened, it can be ensured that reject be set as mac learning it is limited work as front end
The difference of the corresponding receiving time of mouth and recent renewal time is less than the broadcasting packet of time threshold, to guarantee that virtual machine is normal
Communication improves the operational efficiency of cloud computation data center, promotes user experience.
It does not need that port trunking is supported therefore to reduce cloud computation data center using physical switches of the invention
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
Under the premise of the principle of the invention, several 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 being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. the non-polymeric port cascade system of a kind of virtual switch and physical switches, virtual switch pass through physical server
The binding of multiple physical network cards virtual port and physical switches communicate to connect, it is characterised in that: the system comprises default
Module, interception module and screening module；
The presetting module is used to create mac learning restricted attributes variable in virtual port, and sets MAC for virtual port
It practises and being limited, the value of the mac learning restricted attributes variable is that mac learning is limited or mac learning is unrestricted；
The interception module is used to forward virtual switch from the message that the limited virtual port of mac learning receives is set as
To screening module；
The screening module is used to calculate the recent renewal time of source MAC corresponding port in mac address table of message
With the difference of the receiving time of the message, the message that difference is less than the time threshold of setting is rejected, and the message that do not reject is sent out
Send virtual switch back to.
2. the non-polymeric port cascade system of virtual switch as described in claim 1 and physical switches, it is characterised in that:
The presetting module is also used to set the time threshold, and the time threshold is for determining source MAC pair in mac address table
The update frequent degree for the port answered.
3. the non-polymeric port cascade system of virtual switch as described in claim 1 and physical switches, it is characterised in that:
The screening module is also used to parse the message received, 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.
4. a kind of non-polymeric port Cascading Methods based on system described in claim 1, which is characterized in that comprising steps of
S1. presetting module virtual port create mac learning restricted attributes variable, and by virtual port be set as mac learning by
Limit；
S2. virtual switch is forwarded to sieve from the message that the limited virtual port of mac learning receives is set as by interception module
Modeling block；
S3. the source MAC of the screening module calculating message recent renewal time of corresponding port and report in mac address table
The difference of the receiving time of text rejects the message that difference is less than the time threshold of setting, and the message that do not reject is sent back void
Quasi- interchanger.
5. non-polymeric port Cascading Methods as claimed in claim 4, it is characterised in that: step S3 includes:
Screening module described in S31 parses the message received, 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；
Screening module described in S32 calculate message source MAC in mac address table the recent renewal time of corresponding port and
The difference of the receiving time of the message rejects the message that difference is less than the time threshold of setting, and the message that do not reject is sent
Return virtual switch.
6. non-polymeric port Cascading Methods as claimed in claim 4, which is characterized in that step S3 is specifically included:
S321 judgement receives the virtual port of message, and the corresponding port in mac address table is 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 detection receives message, which is set as mac learning, is limited, if so, into S324；If it is not, into
S326；
S324 judges whether the receiving time of the message and the difference of the recent renewal time are less than the time threshold, if
It is, into S325；If it is not, into S326；
S325 rejects the message；
The message is sent back virtual switch by S326.
7. non-polymeric port Cascading Methods as claimed in claim 4, it is characterised in that: the presetting module sets the time
Threshold value, the time threshold are used to determine the update frequent degree of the corresponding port of source MAC in mac address table.
8. such as the described in any item non-polymeric port Cascading Methods of claim 4 to 7, it is characterised in that: the time threshold is 1
Second.
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| CN109728932B (en) * | 2017-10-31 | 2021-09-28 | 中兴通讯股份有限公司 | SDN setting method, controller, switch and computer readable storage medium |
| 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 |
| CN113742331B (en) * | 2021-10-11 | 2024-08-06 | 浙江数智交院科技股份有限公司 | Digital twin ship driving method and device |
| CN114553798B (en) * | 2022-01-14 | 2024-08-02 | 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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