CN104135440B - Method and apparatus for inhibiting host migration - Google Patents
Method and apparatus for inhibiting host migration Download PDFInfo
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Abstract
The invention discloses a kind of method and apparatus for inhibiting host migration.Based on the present invention, OpenFlow controllers identify the VRRP groups belonging to the multicast VRRP messages that each port of edge switching equipment receives, it is thus possible to detect the VRRP groups accessed in each port；Also, OpenFlow controllers are that each VRRP groups are only issued using a selected port in all of the port of its access as the flow table of exit port, it is thus possible to which the VRRP group binding one of which by access in multiple ports selectes port.To, by by VRRP group bindings a selected port, the present invention can avoid due to multicast VRRP messages respectively from different port report to OpenFlow controllers caused by host migration.Moreover, for all of the port of each VRRP groups access, a selected port can be recorded as main port by OpenFlow controllers, remaining port then can be recorded as standby port by OpenFlow controllers.To which when binding has the main port exception of VRRP groups, OpenFlow controllers can utilize the standby port of its record to realize active-standby switch.
Description
Technical field
The present invention relates to the OpenFlow in SDN (Software Defined Network, software defined network) framework
(open flows) technology, more particularly to one kind of the OpenFlow controllers suitable for SDN frameworks is for inhibiting host migration side
Method and device.
Background technology
SDN frameworks are detached the control plane of the network equipment with data surface using OpenFlow technologies, to realize network flow
The flexible control of amount.Correspondingly, SDN frameworks include OpenFlow controllers and OpenFlow switching equipment, wherein：
It is communicated by the channels OpenFlow between OpenFlow controllers and OpenFlow switching equipment, OpenFlow controller roots
Flow table issuance is generated to OpenFlow switching equipment, OpenFlow switching equipment according to the configuration of user or the agreement of dynamic operation
The flow table issued according to OpenFlow controllers carries out Message processing.
In practical networking, the OpenFlow switching equipment in SDN network edge can be described as edge switching equipment, SDN
These edge switching equipments in network are for gateway device with VRRP (Virtual Router Redundancy
Protocol, Virtual Router Redundancy Protocol) group form access.However, when a VRRP group is accessed in SDN network simultaneously
Multiple ports (end of the different port of the same edge of table switching equipment or different edge switching equipments of edge switching equipment
Mouthful) when, the multicast VRRP messages which sends can report to OpenFlow controllers from different port respectively, so as to cause
OpenFlow controllers are mistakenly considered the flow table for host migration having occurred between different port and thus frequent updating issues, into
And cause that OpenFlow controllers are busy, flow that can not be in normal response SDN network, it is unavailable to even result in SDN network.
Invention content
In view of this, the present invention provides a kind of method and apparatus for inhibiting host migration.
A kind of method for inhibiting host migration provided by the invention, this method are included in SDN frameworks
The following steps that OpenFlow controllers execute：
Step a, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Step b, the VRRP groups belonging to the multicast VRRP messages that identification reports；
Step c, a port is selected from all of the port of multicast VRRP messages for receiving the same VRRP groups；
Step d, it is issued using selected port as the flow table of exit port for VRRP groups.
Optionally, step c from all of the port of multicast VRRP messages for receiving the same VRRP groups select one
Port is registered as corresponding to the main port of the VRRP groups, remaining standby port for being recorded as corresponding to the VRRP groups；Also, step
D is in the flow table that VRRP groups issue using its corresponding main port as exit port；And this method further comprises：
Step e, when the corresponding main port exception of VRRP groups, by all standby ports of the correspondence of the record VRRP groups
In a main port for being promoted as corresponding to the VRRP groups；
Step f, delete be VRRP groups issue using former main port as the flow table of exit port and be that VRRP groups are issued with new
The main port of promotion is the flow table of exit port.
Optionally, in all of the port of multicast VRRP messages for receiving the same VRRP groups：
Being initially received a ports of the multicast VRRP messages of the VRRP groups, to be registered as the VRRP groups corresponding primary
Port；
Alternatively, a port for not being registered as the main port of other VRRP groups is preferentially registered as VRRP groups correspondence
Main port.
Optionally, the target MAC (Media Access Control) address in the flow table that step a is issued is multicast mac address, exit port is that edge exchange is set
The port of standby connection OpenFlow controllers.
Optionally, step b utilizes the VRRP groups belonging to the VRID identification multicast VRRP messages in multicast VRRP messages.
A kind of device for inhibiting host migration provided by the invention, the device are included in SDN frameworks
The following module of OpenFlow controllers operation：
Configuration module is reported, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Message identification module identifies the VRRP groups belonging to the multicast VRRP messages reported；
Port chosen module selectes an end from all of the port of multicast VRRP messages for receiving the same VRRP groups
Mouthful；
Configuration module is forwarded, is that VRRP groups are issued using selected port as the flow table of exit port.
Optionally, port chosen module is selected from all of the port of multicast VRRP messages for receiving the same VRRP groups
A port be registered as corresponding to the main port of the VRRP groups, remaining standby port for being recorded as corresponding to the VRRP groups；And
And forwarding configuration module is in the flow table that VRRP groups issue using its corresponding main port as exit port；And the device is into one
Step includes：
Port handover module, when the corresponding main port exception of VRRP groups, by owning for the correspondence of the record VRRP groups
One in the standby port main port for being promoted as corresponding to the VRRP groups；
Forward update module, delete for VRRP groups issue using former main port as the flow table of exit port and be VRRP groups
The main port newly to promote is issued as the flow table of exit port.
Optionally, in all of the port of multicast VRRP messages for receiving the same VRRP groups：
Being initially received a ports of the multicast VRRP messages of the VRRP groups, to be registered as the VRRP groups corresponding primary
Port；
Alternatively, a port for not being registered as the main port of other VRRP groups is preferentially registered as VRRP groups correspondence
Main port.
Optionally, report that the target MAC (Media Access Control) address in the flow table that configuration module issues is multicast mac address, exit port is side
Edge switching equipment connects the port of OpenFlow controllers.
Optionally, message identification module utilizes the VRRP belonging to the VRID identification multicast VRRP messages in multicast VRRP messages
Group.
It can be seen that based on the present invention, OpenFlow controllers identify the multicast that each port of edge switching equipment receives
VRRP groups belonging to VRRP messages, it is thus possible to detect the VRRP groups accessed in each port；Also, OpenFlow controllers are
Each VRRP groups are only issued using a selected port in all of the port of its access as the flow table of exit port, it is thus possible to will be connect
Enter the VRRP group binding one of which in multiple ports and selectes port.To by the way that VRRP group bindings are selected at one
Port, the present invention can be avoided since multicast VRRP messages are respectively from caused by different port reports to OpenFlow controllers
Host migration, to enable the flow in OpenFlow controller normal response SDN network and thus improve OpenFlow controls
The reliability of device processed.
Moreover, for all of the port of each VRRP groups access, one of them selected port can be controlled by OpenFlow
Device processed is recorded as main port, remaining port then can be recorded as standby port by OpenFlow controllers.To when binding has
When the main port exception of VRRP groups, OpenFlow controllers can utilize the standby port of its record to realize active-standby switch.
Description of the drawings
Fig. 1 is the exemplary flow schematic diagram of the method for inhibiting host migration in the embodiment of the present invention；
Fig. 2 is a kind of Optimizing Flow schematic diagram of exemplary flow as shown in Figure 1；
Fig. 3 a and Fig. 3 b are the schematic diagram of the preferred implementation of Optimizing Flow as shown in Figure 2；
Fig. 4 is the example arrangement schematic diagram of the device for inhibiting host migration in the embodiment of the present invention；
Fig. 5 is a kind of optimization structural schematic diagram of example arrangement as shown in Figure 4；
Fig. 6 a and Fig. 6 b are the schematic diagram of the preferred implementation of optimization structure as shown in Figure 5；
Fig. 7 is the schematic diagram of the application example in the embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, develop simultaneously embodiment referring to the drawings, right
The present invention is further described.
In the present embodiment, identify that the multicast VRRP that each port of edge switching equipment receives is reported by OpenFlow controllers
VRRP groups belonging to text, and the VRRP groups that each port for thus detecting edge switching equipment is accessed；Also, for identifying
Access there is all of the port of the same VRRP groups, OpenFlow controllers therefrom to select a port and change VRRP groups only under
Hair selectes flow table of the port as exit port using this, is achieved that the VRRP groups one wherein in multiple ports by access as a result,
The binding of selected port.To, by by VRRP group bindings a selected port, you can avoid due to multicast VRRP messages point
Not from different port report to OpenFlow controllers caused by host migration.In turn, enable OpenFlow controllers just
The often flow in response SDN network and the thus reliability of raising OpenFlow controllers.
Based on above-mentioned principle, a kind of method for inhibiting host migration is present embodiments provided, this method can be answered
Used in OpenFlow controllers.Also, Fig. 1 is referred to, this method is included in the following steps of OpenFlow controllers execution：
Step 101, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Step 102, the VRRP groups belonging to the multicast VRRP messages reported are identified；
Step 103, a port is selected from all of the port of multicast VRRP messages for receiving the same VRRP groups；
Step 104, it is that VRRP groups are issued using selected port as the flow table of exit port.
So far, above-mentioned flow terminates.
In practical applications, OpenFlow controllers can determine that the edge in SDN network is handed over by Network topology
The flow table for making edge switching equipment report multicast VRRP messages can be correctly issued to edge by exchange device, therefore, step 101
Switching equipment, wherein in the flow table for making edge switching equipment report multicast VRRP messages, purpose MAC (Media Access
Control, media access control) address is multicast mac address, such as 01-00-5e-00-00-12, and exit port is then edge
Switching equipment connects the port of OpenFlow controllers.
Moreover, all can include the VRRP groups for sending the VRRP messages in source MAC in all VRRP messages
VRID (Virtual Route Identify, virtual router mark), such as 00-00-5e-00-01-VRID, therefore, for
The each multicast VRRP messages reported, step 102 can identify multicast VRRP reports by the VRID in multicast VRRP messages
VRRP groups belonging to text.
In addition, only a port is used in receiving all of the port of the multicast VRRP messages of the same VRRP groups,
That is, by the exit port in step 103 is selected and is issued as step 104 flow table, but remaining unselected port can be made
To select the backup of port, in order to the active-standby switch of the port binding of realization VRRP groups in selected port exception.
Specifically, step 103 from all of the port of multicast VRRP messages for receiving the same VRRP groups select one
A port can be registered as corresponding to that the main port of the VRRP groups, remaining can then be registered as corresponding to the spare of the VRRP groups
Port；Correspondingly, it is the primary end recorded that step 104, which is the selected port in the flow table that VRRP groups issue as exit port,
Mouthful.
Based on above-mentioned active-standby switch mechanism, for inhibiting the method for host migration can be optimised in the present embodiment, ask
Referring to Fig. 2, this method after optimization is included in the following steps of OpenFlow controllers execution：
Step 201, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Step 202, the VRRP groups belonging to the multicast VRRP messages reported are identified；
Step 203, a port is selected from all of the port of multicast VRRP messages for receiving the same VRRP groups, and
Selected a port is recorded as corresponding to the main port of the VRRP groups, remaining port is recorded as corresponding to the standby of the VRRP groups
Use port；
Step 204, it is that VRRP groups issue flow table using main port as exit port；
Step 205, when the corresponding main port exception of VRRP groups, by all spare ends of the correspondence of the record VRRP groups
A main port for being promoted as corresponding to the VRRP groups in mouthful；
Step 206, delete for VRRP groups issue using former main port as the flow table of exit port and be VRRP groups issue with
The main port newly promoted is the flow table of exit port.
So far, above-mentioned flow terminates.
Wherein, for above-mentioned steps 203, main port can be selected according to different criterion.
For example, using time priority principle, that is, in all of the port for the multicast VRRP messages for receiving the same VRRP groups
In, the corresponding primary end of the VRRP groups can be registered as by being initially received a port of the multicast VRRP messages of the VRRP groups
Mouthful；
Alternatively, port load balancing principle, that is, for the case where there are multiple VRRP groups, receiving the same VRRP
In all of the port of the multicast VRRP messages of group, a port for not being registered as the main port of other VRRP groups can be preferential
It is registered as the corresponding main port of VRRP groups.
Fig. 3 a are referred to, when above-mentioned steps 203 are using time priority principle, step 203 may include following specific
Processing procedure：
S311 judges to work as when step 202 identifies the affiliated VRRP groups of multicast VRRP messages that a port receives
Before the main port of the whether existing record of VRRP groups that identifies execute S312 if not recording main port, if
Record has main port then to execute S313；
Then S312, the main port for the VRRP groups that present port is recorded as currently identifying trigger step 204；
S313, the standby port for the VRRP groups that present port is recorded as currently identifying, be then back to step 202, etc.
Next multicast VRRP messages to be identified.
As for step 201-202 and 204-205 shown in Fig. 3 a, identical as Fig. 2, details are not described herein again.
Fig. 3 b are referred to, when above-mentioned steps 203 are using port load balancing principle, step 203 may include following
Concrete processing procedure：
S321 judges to work as when step 202 identifies the affiliated VRRP groups of multicast VRRP messages that a port receives
Before the main port of the whether existing record of VRRP groups that identifies execute S322 if not recording main port, if
Record has main port then to execute S323；
Then S322, the main port for the VRRP groups that present port is recorded as currently identifying trigger step 204；
S323, the main port for judging present port and having recorded (the primary end of the VRRP groups currently identified
Mouthful) whether and meanwhile be also multiplexed with the main ports of other VRRP groups, if present port is not by the multiplexing of other VRRP groups but
The main port of record is multiplexed with the main port of other VRRP groups simultaneously, then executes S324, otherwise (such as the master recorded
It is not re-used with port or present port and the main port that has recorded is multiplexed by other VRRP groups) execute S325；
S324, the main port for the VRRP groups that present port is recorded as currently identifying, and the current knowledge that will have been recorded
The main port for the VRRP groups not gone out is changed to the standby port of the VRRP groups currently identified, then triggers step 204 update
Flow table；
S325, the standby port for the VRRP groups which is recorded as currently identifying are then back to step 202, wait for
Identify next multicast VRRP messages.
As for step 201-202 and 204-205 shown in Fig. 3 b, identical as Fig. 2, details are not described herein again.
It is the detailed description to the method for inhibiting host migration in the present embodiment above.Since this method can be in terms of
Calculation machine program realizes that therefore, the present embodiment also accordingly provides a kind of device for inhibiting host migration.
Fig. 4 is referred to, it may include being transported in OpenFlow controllers to be used to inhibit the device of host migration in the present embodiment
Capable following module：
Configuration module 401 is reported, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Message identification module 402 identifies the VRRP groups belonging to the multicast VRRP messages reported；
Port chosen module 403 selectes one from all of the port of multicast VRRP messages for receiving the same VRRP groups
A port；
Configuration module 404 is forwarded, is that VRRP groups are issued using selected port as the flow table of exit port.
Similarly with method part, since OpenFlow controllers can be determined by Network topology in SDN network
Edge switching equipment, therefore configuration module 401 is reported edge switching equipment can will to be made to report the flow table of multicast VRRP messages just
Really it is issued to edge switching equipment, wherein in the flow table for making edge switching equipment report multicast VRRP messages, purpose MAC
Address is multicast mac address, such as 01-00-5e-00-00-12, and exit port is then edge switching equipment connection OpenFlow
The port of controller；Moreover, message identification module 402 can identify multicast VRRP by the VRID in multicast VRRP messages
VRRP groups belonging to message.
In addition, the active-standby switch mechanism that method part refers to may be used in port chosen module 403, at this point, the present embodiment
In for inhibiting the device of host migration can be optimised, refer to Fig. 5, the device after optimization is included in OpenFlow controls
The following module of device operation：
Configuration module 501 is reported, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Message identification module 502 identifies the VRRP groups belonging to the multicast VRRP messages reported；
Port chosen module 503 selectes one from all of the port of multicast VRRP messages for receiving the same VRRP groups
A port, and selected a port is recorded as corresponding to the main port of the VRRP groups, remaining port be recorded as it is corresponding this
The standby port of VRRP groups；
Configuration module 504 is forwarded, is that VRRP groups issue flow table using main port as exit port；
Port handover module 505, when the corresponding main port exception of VRRP groups, by the institute of the correspondence of the record VRRP groups
There is in standby port main port for being promoted as corresponding to the VRRP groups；
Forward update module 506, delete for VRRP groups issue using former main port as the flow table of exit port and for VRRP
Group issues the main port newly to promote as the flow table of exit port.
Similarly with method part, it for above-mentioned port chosen module 503, can select to lead according to different criterion
Use port.For example, what is be mentioned above uses time priority principle, alternatively, port load balancing principle.
Fig. 6 a are referred to, when above-mentioned port chosen module 503 is using time priority principle, port chosen module 503 can
With including following submodule：
Record queries submodule 611, whenever message identification module 502 identifies the multicast VRRP reports that a port receives
Belonging to text when VRRP groups, judge that the main port of the whether existing record of the VRRP groups triggers if not recording main port
Primary record sub module 612 triggers duplicated record submodule 613 if having recorded main port；
Primary record sub module 612 will be recorded as the main port of the VRRP groups currently identified when port, then trigger
Forward configuration module 504；
Duplicated record submodule 613, the standby port for the VRRP groups that present port is recorded as currently identifying, then etc.
Wait for that message identification module 502 identifies next multicast VRRP messages.
As for reported shown in Fig. 6 a configuration module 501, message identification module 502, forwarding configuration module 504, port
Handover module 505 and forwarding update module 506, identical as Fig. 5, details are not described herein again.
Fig. 6 b are referred to, when above-mentioned port chosen module 503 is using port load balancing principle, port chosen module
503 may include following submodule：
Record queries submodule 621, whenever message identification module 502 identifies the multicast VRRP reports that a port receives
Belonging to text when VRRP groups, judge that the main port of the whether existing record of the VRRP groups triggers if not recording main port
Primary record sub module 622 triggers multiplexing if having recorded main port and differentiates submodule 623；
Primary record sub module 622, the main port for the VRRP groups which is recorded as currently identifying, is then triggered
Step 204；
Multiplexing differentiates that submodule 623, the main port for judging present port and having recorded (currently identify
The main port of VRRP groups) whether and meanwhile be also multiplexed with the main ports of other VRRP groups, if present port is not by other
The multiplexing of VRRP groups but the main port recorded while the main port for being multiplexed with other VRRP groups, then trigger primary replacement
Submodule 624, otherwise (such as the main port recorded is not re-used or present port and the main port that has recorded
It is multiplexed by other VRRP groups) triggering duplicated record submodule 625；
Primary replacement submodule 624, the main port for the VRRP groups that present port is recorded as currently identifying, and will
The main port of the VRRP groups of record is changed to the standby port of the VRRP groups, and then triggering forwarding configuration module 604 updates
Flow table；
Duplicated record submodule 625, the standby port for the VRRP groups that present port is recorded as currently identifying, then etc.
Wait for that message identification module 502 identifies next multicast VRRP messages.
As for reported shown in Fig. 6 b configuration module 501, message identification module 502, forwarding configuration module 504, port
Handover module 505 and forwarding update module 506, identical as Fig. 5, details are not described herein again.
The method and apparatus for being used to inhibit host migration in the present embodiment as described above in order to better understand, below again
It is further described for an application example.
Fig. 7 is referred to, in the application example：
There are two edge switching equipment A and B for tool in SDN network, wherein edge switching equipment A has port a1 and a2, side
Edge switching equipment B has port b1 and b2；
OpenFlow controllers send a flow table to edge switching equipment A, make edge switching equipment A by port a1 and a2
The multicast VRRP messages received report OpenFlow controllers, also, OpenFlow controllers are sent to edge switching equipment B
A same flow table makes edge switching equipment B report OpenFlow to control the multicast VRRP messages that port b1 and b2 are received
Device processed；
Gateway A and gateway B form the VRRP groups that virtual ip address is " 1.1.1.1/24 ", wherein gateway A connects edge and hands over
The port b1 of the port a1 and edge switching equipment B of exchange device A is simultaneously accessed and is had host A, and gateway B connects edge and exchanges simultaneously
The port b2 of the port a2 and edge switching equipment B of device A is simultaneously accessed and is had host B.
In application example as shown in Figure 7, to select primary end there are a VRRP group and using time priority principle
For mouthful：
When the VRRP groups that gateway A and B are formed start, which can send out multicast VRRP messages.
Correspondingly, the port b1 and b2 of the port a1 and a2 and edge switching equipment B of edge switching equipment A may
Receive the multicast VRRP messages sent out by VRRP groups.
Assuming that the port a1 of edge switching equipment A receives multicast VRRP messages and reports to OpenFlow controllers at first,
It is " 1 " that then OpenFlow controllers, which parse multicast VRRP messages and obtain corresponding VRID, then inquires the VRID that value is " 1 "
With the presence or absence of corresponding record list item.
Include in record list item：VRID fields indicate the value of the VRID carried in the multicast VRRP messages identified；
Switching equipment field indicates the edge switching equipment for reporting multicast VRRP messages；Exit port field, expression receive this
The port of multicast VRRP messages；And port type comprising the spare end indicated with " M " main port indicated and with " B "
Mouth both types.
It is " 1 " due to not receiving the multicast VRRP messages of the VRRP groups before this, thus necessarily without value is inquired
The VRID there are corresponding record list item, to increase record list item, the port a1 of edge switching equipment A is recorded as this
The main port of VRRP groups, record list item at this time refer to table 1.
| VRID | Switching equipment | Exit port | Port type |
| 1 | A | a1 | M |
Table 1
Correspondingly, according to above-mentioned record list item as shown in Table 1, the side where OpenFlow controllers to main port a1
Edge switching equipment A issues flow table, and the purpose IP address of the flow table is 1.1.1.1/24, the end that exit port is edge switching equipment A
Mouth a1, so that all messages for being directed toward VRRP groups are all forwarded via the port a1 of edge switching equipment A.
Then, it is assumed that the port a2 of edge switching equipment A receives the multicast VRRP messages with identical VRID and is reported to
OpenFlow controllers, it is " 1 " that OpenFlow controllers, which parse multicast VRRP messages and obtain corresponding VRID, is then inquired
Existing value is the record list item of the VRID of " 1 ", i.e. list item shown in table 1, thus only increases a new record sheet
As, the port a2 of edge switching equipment A to be recorded as to the standby port of the VRRP groups, record list item at this time is referring to table 2.
| VRID | Switching equipment | Exit port | Port type |
| 1 | A | a1 | M |
| 1 | A | a2 | B |
Table 2
But after having increased record list item newly, OpenFlow controllers no longer issue flow table to edge switching equipment A, accordingly
Ground, edge switching equipment A still continue to use flow table before this, so that all messages for being directed toward VRRP groups still via edge switching equipment A
Port a1 forwarding.
Hereafter, it is further assumed that the port a1 of edge switching equipment A is abnormal, and OpenFlow controllers are by edge switching equipment A's
Port a1 and a2 carry out active-standby switch, and record list item at this time is referring to table 3.
| VRID | Switching equipment | Exit port | Port type |
| 1 | A | a1 | B |
| 1 | A | a2 | M |
Table 3
Port a2 is switched to by port a1 accordingly, due to main port, therefore, according to above-mentioned record as shown in table 3
List item, OpenFlow controllers need delete be handed down to before this edge switching equipment A using port a1 as the flow table of exit port, and
Flow table is re-issued to the edge switching equipment A where main port a2, the purpose IP address of the flow table re-issued is still
1.1.1.1/24 but exit port be edge switching equipment A port a2 so that it is all be directed toward VRRP groups message be changed to via side
The port a2 of edge switching equipment A is forwarded.
Similarly, if the multicast VRRP messages that the port b1 and b2 of edge switching equipment B are received report to OpenFlow
Controller, then can equally be registered as standby port and can be different in main port as the port a2 of edge switching equipment A
Main port is promoted as in switching when often.
Separately it should be noted that above application example is primarily to embody the side that the present embodiment is used to inhibit host migration
The effect that can inhibit host migration of the basic principle and generation of method and device, for there are multiple VRRP groups and using end
The case where mouth load balancing principle selectes port, also corresponds to the basic principle and can equally generate can inhibit host migration
Effect, no longer repeated herein by application example.
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
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of protection of the invention god.
Claims (10)
1. a kind of method for inhibiting host migration, which is characterized in that this method is included in the controls of the OpenFlow in SDN frameworks
The following steps that device processed executes：
Step a, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Step b, the VRRP groups belonging to the multicast VRRP messages that identification reports；
Step c, a port is selected from all of the port of multicast VRRP messages for receiving the same VRRP groups；
Step d, it is issued using selected port as the flow table of exit port for VRRP groups.
2. according to the method described in claim 1, it is characterized in that, step c is from the multicast VRRP for receiving the same VRRP groups
The a port selected in all of the port of message be registered as corresponding to the main port of the VRRP groups, remaining be recorded as it is corresponding this
The standby port of VRRP groups；Also, step d is in the flow table that VRRP groups issue using its corresponding main port as exit port；With
And this method further comprises：
It step e, will be in all standby ports of the correspondence of the record VRRP groups when the corresponding main port exception of VRRP groups
One main port for being promoted as corresponding to the VRRP groups；
Step f, delete be VRRP groups issue using former main port as the flow table of exit port and be that VRRP groups are issued newly to promote
Main port be exit port flow table.
3. according to the method described in claim 2, it is characterized in that, in the multicast VRRP messages for receiving the same VRRP groups
In all of the port：
The a port for being initially received the multicast VRRP messages of the VRRP groups is registered as the corresponding main port of VRRP groups；
Alternatively, a port for not being registered as the main port of other VRRP groups is preferentially registered as the corresponding master of the VRRP groups
Use port.
4. according to the method described in claim 1, it is characterized in that, the target MAC (Media Access Control) address in the flow table that step a is issued is multicast
The exit port for the flow table that MAC Address, step a are issued is the port that edge switching equipment connects OpenFlow controllers.
5. according to the method described in claim 1, it is characterized in that, step b utilizes the VRID identification groups in multicast VRRP messages
Broadcast the VRRP groups belonging to VRRP messages.
6. a kind of device for inhibiting host migration, which is characterized in that the device is included in the controls of the OpenFlow in SDN frameworks
The following module of device operation processed：
Configuration module is reported, the flow table for making it report multicast VRRP messages is issued to edge switching equipment；
Message identification module identifies the VRRP groups belonging to the multicast VRRP messages reported；
Port chosen module selectes a port from all of the port of multicast VRRP messages for receiving the same VRRP groups；
Configuration module is forwarded, is that VRRP groups are issued using selected port as the flow table of exit port.
7. device according to claim 6, which is characterized in that port chosen module is from the group for receiving the same VRRP groups
It broadcasts a port selected in all of the port of VRRP messages and is registered as corresponding to that the main port of the VRRP groups, remaining is recorded as
The standby port of the corresponding VRRP groups；Also, forwarding configuration module is in the flow table that VRRP groups issue with its corresponding primary end
Mouth is exit port；And the device further comprises：
Port handover module, when the corresponding main port exception of VRRP groups, by all spare of the correspondence of the record VRRP groups
One in the port main port for being promoted as corresponding to the VRRP groups；
Forward update module, delete for VRRP groups issue using former main port as the flow table of exit port and be that VRRP groups issue
Using the main port newly promoted as the flow table of exit port.
8. device according to claim 7, which is characterized in that in the multicast VRRP messages for receiving the same VRRP groups
In all of the port：
The a port for being initially received the multicast VRRP messages of the VRRP groups is registered as the corresponding main port of VRRP groups；
Alternatively, a port for not being registered as the main port of other VRRP groups is preferentially registered as the corresponding master of the VRRP groups
Use port.
9. device according to claim 6, which is characterized in that with reporting the purpose MAC in the flow table that configuration module issues
It is edge switching equipment connection OpenFlow controls that location, which is multicast mac address, reports the exit port for the flow table that configuration module issues
The port of device.
10. device according to claim 6, which is characterized in that message identification module utilizes in multicast VRRP messages
VRID identifies the VRRP groups belonging to multicast VRRP messages.
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