CN107612834A - A kind of EVPN route renewing methods based on virtual unit migration - Google Patents
A kind of EVPN route renewing methods based on virtual unit migration Download PDFInfo
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Abstract
This application provides a kind of EVPN route renewing methods and device based on virtual unit migration.Control targe VTEP periodically sends ARP request to virtual unit, and detects whether that arp reply can be received, if target VTEP can not receive arp reply, EVPN route withdraw information is issued, by virtual unit not in other VTEP of the information announcement of original physical equipment.Other VTEP delete the network information of the virtual unit, the message for being no longer issued to virtual unit is sent to target VTEP, ARP request is sent using the mode of flooding to find the virtual unit, and after receiving arp reply, other VTEP update the network information of the virtual unit according to arp reply.The application saves the time of virtual unit route withdraw, and avoiding the network transmission efficiency as caused by the mistake forwarding of flow in MAC Address transition process reduces, the problem of transmitted response poor-performing.
Description
Technical field
The application is related to network communication technology field, more particularly to a kind of EVPN routes based on virtual unit migration more
New method and device.
Background technology
VXLAN (Virtual Extensible LAN, expansible Virtual Local Area Network) is the two-layer VPN of IP based network
Technology, VXLAN can be based on existing service provider or enterprise IP network, and two layers of interconnection work(are provided for scattered physical site
Can, it is mainly used in data center network.
Using EVPN, (Ethernet Virtual Private Network, Ethernet are virtually special in control plane by VXLAN
With network) network technology carries out multi-home networking, and use BGP (Border Gateway Protocol, Border Gateway Protocol) to make
For top level control agreement.Wherein, EVPN group-network construction includes VM (Virtual Machine, virtual machine) equipment and VTEP
(VXLAN Tunnel End Point, VXLAN endpoint of a tunnel).
MAC Address migration refers to virtual unit from original physical equipment transportation to new physicses equipment.In the prior art, the original
The VTEP of reason equipment connection can not perceive virtual unit and have migrated to new physicses equipment, still can be by the original of virtual unit
ARP information notices other VTEP, and the flow for being sent to virtual unit remains on and can go to original physical equipment.Until there is new VTEP
The message of the virtual unit is received, other VTEP could be noticed and update the route of the virtual unit, and issue original VTEP
Route withdraw, new physicses equipment can just be gone to by being now sent to the flow of virtual unit.The process of this routing update needs one
Section stabilization time, the mistake forwarding in this period can cause network transmission efficiency to reduce, transmitted response poor-performing.
The content of the invention
In order to solve the above technical problems, this application provides a kind of EVPN route renewing methods based on virtual unit migration
And device, technical scheme are as follows：
A kind of EVPN route renewing methods based on virtual unit migration, the group-network construction of the EVPN include virtually setting
Standby and VTEP, methods described include：
Target VTEP periodically sends ARP request to virtual unit, and detects whether that arp reply, the target can be received
The physical equipment at place is connected before VTEP migrates with virtual unit；
If target VTEP can not receive arp reply, EVPN route withdraw information is issued, the EVPN route withdraws information is used
In by virtual unit not in other VTEP of the information announcement of original physical equipment；
Other VTEP delete the network information of the virtual unit, and it is described to find to send ARP request using the mode of flooding
Virtual unit, and detect whether that arp reply can be received；
If other VTEP receive arp reply, other VTEP update the network information of the virtual unit according to arp reply.
Described based in the EVPN route renewing methods of virtual unit migration, the target VTEP periodically sends ARP
Virtual unit is asked, including：
It is target VTEP configuration orders before virtual unit migration, so that the VTEP periodically sends ARP request to void
Propose standby.
Described based in the EVPN route renewing methods of virtual unit migration, the network information of the virtual unit includes
The ARP information and MAC forwarding-table item informations of virtual unit.
Described based in the EVPN route renewing methods of virtual unit migration, other described VTEP uses modes of flooding are sent out
ARP request is sent to find the virtual unit, and detects whether that arp reply can be received, including：
When other VTEP receive the message for issuing virtual unit, it is described to find to send ARP request using the mode of flooding
Virtual unit, and detect whether that arp reply can be received, if arp reply can not be received, abandon the message.
Described based in the EVPN route renewing methods of virtual unit migration, the target VTEP periodically sends ARP
Virtual unit is asked, and detects whether that arp reply can be received, including：
If target VTEP can receive arp reply, durations send ARP request；
If target VTEP can not receive arp reply, stop sending ARP request.
A kind of EVPN routing update devices based on virtual unit migration, the group-network construction of the EVPN include virtually setting
Standby and VTEP, described device include：
Migrate detection module：For making target VTEP periodically send ARP request to virtual unit, and detect whether to receive
To arp reply, the physical equipment at place is connected before the target VTEP migrates with virtual unit；
Information cancels module：It is described for when target VTEP can not receive arp reply, issuing EVPN route withdraw information
EVPN route withdraws information is used for virtual unit not in other VTEP of the information announcement of original physical equipment；
Equipment searching modul：For making other VTEP delete the network information of the virtual unit, sent out using the mode of flooding
ARP request is sent to find the virtual unit, and detects whether that arp reply can be received；
Information updating module：For when other VTEP receive arp reply, making other VTEP update institute according to arp reply
State the network information of virtual unit.
Described based in the EVPN routing update devices of virtual unit migration, the migration detection module, it is specifically used for：
It is target VTEP configuration orders before virtual unit migration, so that the VTEP periodically sends ARP request to void
Propose standby.
Described based in the EVPN routing update devices of virtual unit migration, the network information of the virtual unit includes
The ARP information and MAC forwarding-table item informations of virtual unit.
Described based in the EVPN routing update devices of virtual unit migration, the equipment searching modul, it is specifically used for：
When other VTEP receive the message for issuing virtual unit, it is described to find to send ARP request using the mode of flooding
Virtual unit, and detect whether that arp reply can be received, if arp reply can not be received, abandon the message.
Described based in the EVPN routing update devices of virtual unit migration, the migration detection module, it is specifically used for：
If target VTEP can receive arp reply, durations send ARP request；
If target VTEP can not receive arp reply, stop sending ARP request.
The application optimizes EVPN routing update mode on the basis of existing MAC Address migration scheme.By VTEP pairs
The virtual unit that will be migrated does periodicity ARP detections, once detecting less than virtual unit, just issues EVPN route withdraws, will
Virtual unit does not inform other VTEP in original physical equipment.After other VTEP receive route withdraw, no longer by the stream of virtual unit
Amount is sent to VTEP, and finds virtual unit by the ARP modes of flooding, and then the new ARP information of virtual unit is passed through into new VTEP
EVPN routing updates be advertised to all VTEP, save the time of virtual unit route withdraw, avoid MAC Address and migrated
The network transmission efficiency as caused by the mistake forwarding of flow reduces in journey, the problem of transmitted response poor-performing.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of schematic diagram of the existing networking plan of the embodiment of the present application；
Fig. 2 is a kind of flow chart for the EVPN route renewing methods that the embodiment of the present application is migrated based on virtual unit；
Fig. 3 is the EVPN route renewing method another kind flow charts that the embodiment of the present application is migrated based on virtual unit；
Fig. 4 is a kind of schematic diagram for the EVPN routing update devices that the embodiment of the present application is migrated based on virtual unit.
Embodiment
This application provides a kind of EVPN route renewing methods and device based on virtual unit migration.Such as accompanying drawing 1, with thing
Reason equipment is server to illustrate.Each VTEP can connect some servers, and each server can include N number of virtual
Equipment.When there is message to need to issue virtual unit, it is necessary to first be sent to the server where virtual unit.When virtual unit from
When one server migration is to another server, its mac address information, that is, server info where it can occur
Change.Assuming that virtual unit is originally in server 1 and starting to move to server 2, in the prior art, VTEP 1 perceive less than
The migration of virtual unit, therefore in transition process, the EVPN that VTEP 1 is issued is route still by the former ARP information of virtual unit
Other VTEP are noticed, other VTEP still believe that virtual unit on the server, and the message that can be issued to virtual unit is sent to
Server 1.
, just can be by VTEP only when virtual unit is completed to migrate, and sends the messages such as ARP or RARP on a server 2
2 receive, and at this moment the ARP information of new virtual unit can be released by EVPN routes, it is virtual to notice other VTEP renewals
The route of equipment.After VTEP receives the renewal route of virtual unit, it is found that virtual unit not on the server, is then sent out
Revocation route of the cloth to virtual unit, notify other VTEP virtual units not on the server, will after issue and virtually set
Standby message is sent to server 2.
In this course, the mistake forwarding of information can cause network transmission efficiency to reduce, transmitted response poor-performing.For
Solve this problem, present applicant proposes a kind of EVPN route renewing methods based on virtual unit migration, the EVPN
Group-network construction includes virtual unit and VTEP, and methods described includes：
Target VTEP periodically sends ARP request to virtual unit, and detects whether that arp reply, the target can be received
The physical equipment at place is connected before VTEP migrates with virtual unit；
If target VTEP can not receive arp reply, EVPN route withdraw information is issued, the EVPN route withdraws information is used
In by virtual unit not in other VTEP of the information announcement of original physical equipment；
Other VTEP delete the network information of the virtual unit, and it is described to find to send ARP request using the mode of flooding
Virtual unit, and detect whether that arp reply can be received；
If other VTEP receive arp reply, other VTEP update the network information of the virtual unit according to arp reply.
In order that those skilled in the art more fully understand the technical scheme in the application, implement below in conjunction with the application
Accompanying drawing in example, the technical scheme in the embodiment of the present application is described in detail.
Fig. 2 is refer to, a kind of stream of the EVPN route renewing methods migrated for the embodiment of the present application light based on virtual unit
Cheng Tu, it can include following basic step：
S201, target VTEP send ARP request to virtual unit；
Virtual unit, refer to utilizing virtualization technology, multiple main frames are fictionalized on a physical server.It is each empty
Intend the main frame equipment such as independence, the internal memory for having respective operating system and being logically independent of each other, CPU, network interface card mutually, from using journey
From the perspective of sequence, there is no difference in the case of the overwhelming majority and using physical server.
VTEP, the termination point of a tunnel in VXLAN networks is referred to, for being sent in VXLAN networks, receiving VXLAN messages；
Wherein, VXLAN messages are the message for encapsulating VXLAN headings.One VTEP can access multiple VXLAN networks, also may be used
With access more be in similar and different VXLAN networks virtual units, wherein, the double layer network address of each virtual unit and
Three-layer network address is all different.VTEP receives the report that virtual unit sends the opposite end virtual unit to access opposite end VTEP
Wen Hou, then by the VXLAN tunnels between the VTEP of opposite end, the VXLAN messages are sent out for the message packaging V XLAN headings
Opposite end VTEP is delivered to, will be sent by opposite end VTEP after message decapsulation to opposite end virtual unit.
ARP (Address Resolution Protocol), it is the TCP/IP that physical address is obtained according to IP address
Agreement.Here ARP request is that the information comprising virtual unit IP address is sent into virtual unit, and waits and to be received virtually set
It is standby to return to message (arp reply), to determine virtual unit whether also in original position.
In the present embodiment, target VTEP refers to the VTEP that the server where before being migrated with virtual unit is connected.
S202, target VTEP detect whether that arp reply can be received；If arp reply can be received, step is repeated
S2101 is to step S202, if arp reply can not be received, performs step S203.
S203, issue EVPN route withdraw information；
When VTEP can not receive the response of virtual unit, judge that virtual unit is had moved away, and issue EVPN routes
Revocation information.EVPN route withdraws information can by virtual unit not former server information announcement to other in networking
VTEP。
S204, other VTEP delete the network information of the virtual unit；
After other VTEP receive the route withdraw information of the virtual unit of target VTEP issues, the correlation of virtual unit is deleted
The network information.After deletion, when other VTEP receive the message for being sent to virtual unit, target VTEP is no longer sent to.
S205, other VTEP send ARP request to find the virtual unit in a manner of flooding；
Flood (Flooding) be a kind of data flow Transfer Technology, by the data flow that some interface receives from except the interface it
Outer total interface is sent.In the present embodiment, VTEP is sent out using all of the port in addition to the port for receiving the message
The ARP request of virtual unit is sent, and waits arp reply to be received.
S206, other VTEP detect whether that arp reply can be received；If arp reply can be received, step S207 is performed, such as
Fruit can not receive arp reply, not operate.
If not receiving arp reply, judge that virtual unit not yet migrates and finish, message can not be sent.
S207, other VTEP update the network information of the virtual unit according to arp reply.
If receiving arp reply, judge that virtual unit has migrated and finish, the virtual unit is updated according to arp reply
The network information.
Fig. 3 is refer to, the another kind of the EVPN route renewing methods migrated for the embodiment of the present application light based on virtual unit
Flow chart, it can include following basic step：
S301, it is target VTEP configuration orders before virtual unit migration, VTEP is sent ARP request to virtual unit；
Before virtual unit migration, target VTEP is first configured, its periodicity is sent ARP request to virtual unit.
S302, target VTEP detect whether that arp reply can be received；If arp reply can be received, step S301 is repeated
To step S302, if arp reply can not be received, step S303 is performed.
S303, issue EVPN route withdraw information；
S304, VTEP stop sending ARP request to virtual unit；
S305, other VTEP delete the ARP information and MAC forwarding-table item informations of the virtual unit；
S306, when other VTEP receive the message for issuing virtual unit, ARP request is sent using the mode of flooding to find
The virtual unit；
Usually, when other VTEP according to receive destination address be virtual unit message after, establish message source MAC
With the mapping of port where VTEP, and it is written into mac address table.VTEP has established together the target MAC (Media Access Control) address of message
Mac address table is compared, to determine being forwarded by which port.
In the present embodiment, the target MAC (Media Access Control) address of message is deleted after route withdraw information is received, not in MAC
In address table.VTEP sends the ARP request of virtual unit using all of the port in addition to the port for receiving the message, and waits
Receive arp reply.
S307, other VTEP detect whether that arp reply can be received；If arp reply can be received, step S309 is performed, such as
Fruit can not receive arp reply, perform S308.
S308, other VTEP update the ARP information and MAC forwarding-table item informations of the virtual unit according to arp reply；
S309, other VTEP abandon the message for issuing virtual unit.
Fig. 4 is refer to, one kind of the EVPN routing update devices migrated for the embodiment of the present application light based on virtual unit is shown
It is intended to, it can include migration detection module 410, information revocation module 420, equipment searching modul 430, information updating module
440。
Migrate detection module 410：For making target VTEP periodically send ARP request to virtual unit, and detect whether
Arp reply can be received, the physical equipment at place is connected before the target VTEP migrates with virtual unit；
Information cancels module 420：For when target VTEP can not receive arp reply, issuing EVPN route withdraw information, institute
EVPN route withdraws information is stated to be used for virtual unit not in other VTEP of the information announcement of original physical equipment；
Equipment searching modul 430：For making other VTEP delete the network information of the virtual unit, the mode of flooding is used
ARP request is sent to find the virtual unit, and detects whether that arp reply can be received；
Information updating module 440：For when other VTEP receive arp reply, making other VTEP be updated according to arp reply
The network of the virtual unit
Further, in a kind of embodiment of the application, the migration detection module, it is specifically used for：
It is target VTEP configuration orders before virtual unit migration, so that the VTEP periodically sends ARP request to void
Propose standby.
Further, in a kind of embodiment of the application, the network information of the virtual unit is included virtually
The ARP information and MAC forwarding-table item informations of equipment.
Further, in a kind of embodiment of the application, the equipment searching modul, it is specifically used for：
When other VTEP receive the message for issuing virtual unit, it is described to find to send ARP request using the mode of flooding
Virtual unit, and detect whether that arp reply can be received, if arp reply can not be received, abandon the message.
Further, in a kind of embodiment of the application, the migration detection module, it is specifically used for：
If target VTEP can receive arp reply, durations send ARP request；
If target VTEP can not receive arp reply, stop sending ARP request information.
The embodiment of the present application also provides a kind of computer-readable recording medium, is stored thereon with computer program, the program
The foregoing EVPN route withdraw methods based on virtual unit migration are realized when being executed by processor, this method includes：
It is target VTEP configuration orders before virtual unit migration, so that the VTEP periodically sends ARP request to void
Propose standby, and detect whether to receive arp reply, the physical equipment phase where before the target VTEP and virtual unit migration
Even；
If target VTEP can not receive arp reply, EVPN route withdraw information is issued, the EVPN route withdraws information is used
In by virtual unit not in other VTEP of the information announcement of original physical equipment.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM
(SRAM), dynamic random access memory (DRAM), other kinds of random access memory (RAM), read-only storage
(ROM), Electrically Erasable Read Only Memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc are read-only
Memory (CD-ROM), digital versatile disc (DVD) or other optical storages, magnetic cassette tape, tape magnetic rigid disk storage or
Other magnetic storage apparatus or any other non-transmission medium, the information that can be accessed by a computing device available for storage.According to
Herein defines, and computer-readable medium does not include temporary computer readable media (transitory media), such as modulation
Data-signal and carrier wave.
Each embodiment in the application is described by the way of progressive, identical similar part between each embodiment
Mutually referring to what each embodiment stressed is the difference with other embodiment.Implement especially for device
For example, because it is substantially similar to embodiment of the method, so describing fairly simple, related part is referring to embodiment of the method
Part illustrates.Device embodiment described above is only schematical, illustrates wherein described as separating component
Module can be or may not be physically separate, can be as the part that module is shown or may not be thing
Manage unit, you can with positioned at a place, or can also be distributed on multiple NEs.It can select according to the actual needs
Some or all of module therein is selected to realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying wound
In the case that the property made is worked, you can to understand and implement.
The preferred embodiment of the application is the foregoing is only, not limiting the application, all essences in the application
God any modification, equivalent substitution and improvements done etc., should be included within the scope of the application protection with principle.
Claims (10)
1. a kind of EVPN route renewing methods based on virtual unit migration, the group-network construction of the EVPN include virtual unit
And VTEP, it is characterised in that methods described includes：
Target VTEP periodically sends ARP request to virtual unit, and detects whether that arp reply, the target VTEP can be received
Physical equipment where before being migrated with virtual unit is connected；
If target VTEP can not receive arp reply, EVPN route withdraw information is issued, the EVPN route withdraws information is used for will
Virtual unit is not in other VTEP of the information announcement of original physical equipment；
Other VTEP delete the network information of the virtual unit, and it is described virtual to find to send ARP request using the mode of flooding
Equipment, and detect whether that arp reply can be received；
If other VTEP receive arp reply, other VTEP update the network information of the virtual unit according to arp reply.
2. according to the method for claim 1, it is characterised in that the target VTEP periodically sends ARP request to virtually
Equipment, including：
Be target VTEP configuration orders before virtual unit migration, so that the VTEP periodically transmission ARP requests are to virtually setting
It is standby.
3. according to the method for claim 1, it is characterised in that the network information of the virtual unit includes virtual unit
ARP information and MAC forwarding-table item informations.
4. according to the method for claim 1, it is characterised in that other described VTEP uses modes of flooding send ARP request
To find the virtual unit, and detect whether that arp reply can be received, including：
When other VTEP receive the message for issuing virtual unit, it is described virtual to find to send ARP request using the mode of flooding
Equipment, and detect whether that arp reply can be received, if arp reply can not be received, abandon the message.
5. according to the method for claim 1, it is characterised in that the target VTEP periodically sends ARP request to virtually
Equipment, and detect whether that arp reply can be received, including：
If target VTEP can receive arp reply, durations send ARP request；
If target VTEP can not receive arp reply, stop sending ARP request.
6. a kind of EVPN routing update devices based on virtual unit migration, the group-network construction of the EVPN include virtual unit
And VTEP, it is characterised in that described device includes：
Migrate detection module：For making target VTEP periodically send ARP request to virtual unit, and detect whether to receive
Arp reply, the physical equipment at place is connected before the target VTEP migrates with virtual unit；
Information cancels module：For when target VTEP can not receive arp reply, issuing EVPN route withdraw information, the EVPN
Route withdraw information is used for virtual unit not in other VTEP of the information announcement of original physical equipment；
Equipment searching modul：For making other VTEP delete the network information of the virtual unit, ARP is sent using the mode of flooding
Request to find the virtual unit detects whether that arp reply can be received；
Information updating module：For when other VTEP receive arp reply, making other VTEP update the void according to arp reply
Propose the standby network information.
7. device according to claim 6, it is characterised in that the migration detection module, be specifically used for：
Be target VTEP configuration orders before virtual unit migration, so that the VTEP periodically transmission ARP requests are to virtually setting
It is standby.
8. device according to claim 6, it is characterised in that the network information of the virtual unit includes virtual unit
ARP information and MAC forwarding-table item informations.
9. device according to claim 6, it is characterised in that the equipment searching modul, be specifically used for：
When other VTEP receive the message for issuing virtual unit, it is described virtual to find to send ARP request using the mode of flooding
Equipment, and detect whether that arp reply can be received, if arp reply can not be received, abandon the message.
10. device according to claim 6, it is characterised in that the migration detection module, be specifically used for：
If target VTEP can receive arp reply, durations send ARP request；
If target VTEP can not receive arp reply, stop sending ARP request.
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| CN109286565A (en) * | 2018-11-15 | 2019-01-29 | 北京华三通信技术有限公司 | Message forwarding method and device |
| CN110635935A (en) * | 2018-06-25 | 2019-12-31 | 丛林网络公司 | Using multiple EVPN routes for respective service interfaces of a user interface |
| CN111447295A (en) * | 2020-02-29 | 2020-07-24 | 新华三信息安全技术有限公司 | Hardware address negotiation method and device |
| CN111698154A (en) * | 2020-04-30 | 2020-09-22 | 新华三技术有限公司 | Method and device for inhibiting frequent migration of host route |
| CN112866435A (en) * | 2021-02-23 | 2021-05-28 | 中国联合网络通信集团有限公司 | MAC address aging processing method and equipment |
| CN113300931A (en) * | 2021-05-12 | 2021-08-24 | 中国联合网络通信集团有限公司 | Virtual machine migration discovery method and VTEP |
| CN113574834A (en) * | 2020-02-28 | 2021-10-29 | 新华三技术有限公司 | Route updating method and device |
| CN113612782A (en) * | 2021-08-06 | 2021-11-05 | 中国联合网络通信集团有限公司 | Virtual machine migration verification method and device |
| CN113938354A (en) * | 2021-10-12 | 2022-01-14 | 中国联合网络通信集团有限公司 | Routing information updating method and device, electronic equipment and computer readable medium |
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