CN104219142B - Access method, system and the DCBR of the virtual machine migrated across IDC - Google Patents
Access method, system and the DCBR of the virtual machine migrated across IDC Download PDFInfo
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- CN104219142B CN104219142B CN201310208170.4A CN201310208170A CN104219142B CN 104219142 B CN104219142 B CN 104219142B CN 201310208170 A CN201310208170 A CN 201310208170A CN 104219142 B CN104219142 B CN 104219142B
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Abstract
This disclosure relates to a kind of method for accessing the virtual machine across IDC migrations, system and DCBR.The method is included in before virtual machine carries out across IDC migration, and the network segment that DCBR receives belonging to the virtual machine that virtual machine is issued by a DCPE route；Network segment route belonging to virtual machine is published to UPE；Migrated during to two IDC from an IDC in response to virtual machine, DCBR receives the Host routes of the virtual machine of the 2nd DCPE issues, wherein, IP address of the virtual machine in transition process keeps constant, and the Host routes of virtual machine are produced on the 2nd DCPE；Network segment route belonging to the virtual machine that DCBR will be received carries out route aggregation with the Host routes of virtual machine, and the route after polymerization is distributed into UPE.The disclosure can effectively solve user and access virtual machine the flow that causes to rotate problem.
Description
Technical field
This disclosure relates to cloud computing, especially, is related to a kind of access across IDC（Internet Data Center, internet
Data center）The method of the virtual machine of migration, system and DCBR（IDC Border Router, IDC border routers）.
Background technology
IP address keeps constant during migration across IDC due to virtual machine, and access of the user to virtual machine arrives first at former IDC,
Then new IDC is forwarded to by former IDC again.Rotated for such flow, the main technological means for using includes at present：GSLB
（Global Server Load Balance, GSLB）And LISP（Location-ID Separation
Protocol, address (ADDR separated network agreement）-VM（Virtual Machine, virtual machine）Mobility technologies.
（1）GSLB technologies
The principle of the technology is to use different LB（Load Balance, load balancing）By rear end identical actual and virtual
Machine IP address is mapped as external different virtual IP address.
Fig. 1 is the operation principle of existing GSLB technologies.
As shown in figure 1, when user accesses virtual machine VM1, first by DNS（Domain Name System, domain name system
System）The corresponding IP address of virtual machine VM1 domain names is resolved to server the IP address of LB1.When across the IDC migration of virtual machine, cloud
Management of computing platform notified on authorization dns server changes the corresponding IP address of virtual machine domain name for LB2.When new user initiates to visit
By virtual machine VM1 domain name mappings it is LB2 by dns server when asking, and then virtual machine is accessed by LB2.
The technology needs to transform authorized DNS server, and the flow of its user that can only solve newly to reach the standard grade rotates and asks
Topic, for online user because DNS request will not be initiated again, therefore flow still suffers from the problem of rotating.In addition, virtual machine and awarding
Power dns server is typically managed respectively by cloud service provider and user respectively, coordinates practical operation difficulty larger between the two.
（2）LISP-VM Mobility technologies
The IPinIP that LISP technologies by Locator and ID separate（It is a kind of tunnel type, is exactly IP encapsulations another
Transmitted in individual IP）Tunneling technique, outer layer tunnel mark Locator internal layers IP address mark ID, ID is realized by mapping database
With the mapping of Locator.
Fig. 2 is the principle schematic of existing LISP-VM Mobility technologies.
As shown in Fig. 2 when virtual machine Y moves to Easy Data Center from West Data Center, it will
A new mapping item 10.1.0.2/32RLOC is generated in mapping database Mapping Database（Router
Location, router position）C, when user accesses virtual machine Y, in ITR（Ingress tunnel router, entrance tunnel
Road router）Corresponding Locator is inquired about in inquiry Mapping Database list items, C is forwarded to by encapsulating LISP tunnels,
Realize the access to virtual machine Y.
The technology is realized complex, it is necessary to safeguard a huge Mapping Database, the update mechanism of list item
Deng all complex, ITR/ETR（Egress Tunnel Router, exit tunnel router）Upgrade job amount is big, technology compared with
It is difficult practical.
The content of the invention
The disclosure is in view of at least one of problem above proposes new technical scheme.
The disclosure its on one side provide it is a kind of access across IDC migration virtual machine method, its virtual machine across
When IDC is migrated, can effectively solve user and access virtual machine the flow that causes to rotate problem.
On the other hand the disclosure provides a kind of DCBR at it, and it can effectively solve to use in across the IDC migration of virtual machine
Family accesses virtual machine the flow that causes and rotates problem.
The disclosure its another aspect provide it is a kind of access across IDC migration virtual machine system, its virtual machine across
When IDC is migrated, can effectively solve user and access virtual machine the flow that causes to rotate problem.
According to the disclosure, there is provided a kind of method of the virtual machine of access crossing internet data center IDC migrations, including：
Before virtual machine carries out across IDC migration, IDC border routers receive virtual machine and pass through an IDC service provider
Network segment route belonging to the virtual machine of edge router issue；
Network segment route belonging to virtual machine is published to user side service provider edge router；
Migrated during to two IDC from an IDC in response to virtual machine, IDC border routers receive the 2nd IDC services and provide
The Host routes of the virtual machine of business's edge router issue, wherein, IP address of the virtual machine in transition process keeps constant, and
The Host routes of virtual machine are produced in the 2nd IDC service provider edge routers；
Network segment route belonging to the virtual machine that IDC border routers will be received is route with the Host routes of virtual machine
Polymerization, and the route after polymerization is distributed to user side service provider edge router.
In some embodiments of the present disclosure, the method also includes：
Migrated to the 2nd IDC from an IDC in virtual machine, if user initiates the access request to virtual machine, IDC
Border router receives the access request that user is initiated by the route after polymerization；
IDC border routers are carried out according to the purpose IP address carried in request with the routing iinformation of the virtual machine for receiving
Match somebody with somebody, obtain the Host routes of virtual machine；
Access request is forwarded into the 2nd IDC Provider Edge by the Host routes of the virtual machine for obtaining to route
Device, to realize the access to virtual machine.
In some embodiments of the present disclosure, the method also includes：
Before virtual machine carries out across IDC migration, if user initiates the access request to virtual machine, IDC border routings
Device receives user and route the access request initiated by the network segment belonging to virtual machine；
IDC border routers are carried out according to the purpose IP address carried in request with the routing iinformation of the virtual machine for receiving
Match somebody with somebody, obtain the network segment route belonging to virtual machine；
It is route by the network segment belonging to the virtual machine that obtains and access request is forwarded to an IDC Provider Edge road
By device, to realize the access to virtual machine.
In some embodiments of the present disclosure, IDC border routers receive an IDC service provider edge routers and lead to
Cross belonging to the virtual machine of multi protocol label switching protocol-label distribution protocol and the extension issue of Border Gateway Protocol multi-protocols
The network segment route.
In some embodiments of the present disclosure, IDC border routers receive the 2nd IDC service provider edge routers and lead to
Cross the main frame of the virtual machine of multi protocol label switching protocol-label distribution protocol and the extension issue of Border Gateway Protocol multi-protocols
Route.
According to the disclosure, a kind of IDC border routers are additionally provided, including：
The network segment route receiving unit, is serviced by an IDC for receiving virtual machine before virtual machine carries out across IDC migration
Network segment route belonging to the virtual machine of Provider edge router issue；
The network segment route release unit, for the network segment route belonging to virtual machine to be published into user side Provider Edge
Router；
Host routes receiving unit, for being migrated during to two IDC from an IDC in response to virtual machine, receives the 2nd IDC
The Host routes of the virtual machine of service provider edge router issue, wherein, IP address of the virtual machine in transition process is protected
Hold constant, and the Host routes of virtual machine are produced in the 2nd IDC service provider edge routers；
Polyaluminium chloride PAC release unit, for the Host routes of the network segment route belonging to the virtual machine that will receive and virtual machine
Route aggregation is carried out, and the route after polymerization is distributed to user side service provider edge router.
In some embodiments of the present disclosure, IDC border routers also include：
First access request receiving unit, for being migrated to the 2nd IDC from an IDC in virtual machine, if user sends out
The access request to virtual machine is played, then receives the access request that user is initiated by the route after polymerization；
The first via is believed by matching unit for the route according to the purpose IP address carried in request and the virtual machine of reception
Breath is matched, and obtains the Host routes of virtual machine；
First access request retransmission unit, is forwarded to for the Host routes by the virtual machine for obtaining by access request
Two IDC service provider edge routers, to realize the access to virtual machine.
In some embodiments of the present disclosure, IDC border routers also include：
Second access request receiving unit, for before virtual machine carries out across IDC migration, if user is initiated to virtual machine
Access request, then receive user and the access request initiated route by the network segment belonging to virtual machine；
Secondary route matching unit, for being believed with the route of the virtual machine for receiving according to the purpose IP address carried in request
Breath is matched, and obtains the network segment route belonging to virtual machine；
Second access request retransmission unit, forwards access request for the network segment route belonging to the virtual machine by obtaining
To an IDC service provider edge routers, to realize the access to virtual machine.
In some embodiments of the present disclosure, network segment route receiving unit receives IDC Provider Edge route
Device extends the virtual machine institute of issue by multi protocol label switching protocol-label distribution protocol and Border Gateway Protocol multi-protocols
The network segment route of category.
In some embodiments of the present disclosure, Host routes receiving unit receives the 2nd IDC Provider Edge route
Device extends the virtual machine of issue by multi protocol label switching protocol-label distribution protocol and Border Gateway Protocol multi-protocols
Host routes.
According to the disclosure, a kind of system of the virtual machine for accessing crossing internet data center IDC migrations is additionally provided, including
User side service provider edge router, an IDC service provider edge routers, the 2nd IDC Provider Edge
IDC border routers in router and previous embodiment.
In the technical scheme of the disclosure, due to storing the network segment route belonging to virtual machine in IDC border routers
With the Host routes of virtual machine, therefore, after IDC border routers receive access request of the user to virtual machine, Ke Yitong
Cross and the destination address of virtual machine found into most fine path with the method that the routing iinformation of the virtual machine for being stored is matched,
And then the virtual machine in the IDC after the path directly have access to migration can be based on, it is to avoid access request to former IDC around
OK.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding of the disclosure, constitutes the part of the application.Attached
In figure：
Fig. 1 is the operation principle of existing GSLB technologies.
Fig. 2 is the principle schematic of existing LISP-VM Mobility technologies.
Fig. 3 is the realization principle schematic diagram that the disclosure accesses the virtual machine across IDC migrations.
Fig. 4 is the schematic flow sheet of the method for virtual machine that is migrated across IDC of access of disclosure one embodiment.
Fig. 5 is the schematic flow sheet of the method for virtual machine that is migrated across IDC of access of another embodiment of the disclosure.
Fig. 6 is the structural representation of the DCBR of disclosure one embodiment.
Fig. 7 is the structural representation of the DCBR of another embodiment of the disclosure.
Fig. 8 is the structural representation of the DCBR of the another embodiment of the disclosure.
Fig. 9 is the structural representation of the system of virtual machine that is migrated across IDC of access of disclosure one embodiment.
Specific embodiment
The disclosure is described below with reference to accompanying drawings.It should be noted that following description is only in itself explanatory and shows
Example property, never as to the disclosure and its application or any limitation for using.Unless stated otherwise, otherwise, implementing
The part and the positioned opposite and numerical expression and numerical value of step illustrated in example are not intended to limit the scope of the present disclosure.In addition,
Technology well known by persons skilled in the art, method and apparatus may not be discussed in detail, but be meant as in appropriate circumstances
A part for specification.
The following embodiments of the disclosure use Hierarchical MPLS（Multi-Protocol Label Switch, multi-protocols mark
Sign exchange agreement）Technology design network plan realizes the selection of optimal path.Basic thought thinks that user is to IDC virtual machines
Accessing shortest path can be by corresponding each access network in IDC internet（That is, Metropolitan Area Network (MAN)）DCBR.User is to virtual machine
Shortest path be path sum of the user to DCBR and DCBR to virtual machine.Based on H-VPN（Hybrid Virtual
Private Network, mix Virtual Private Network）, using Hierarchical MPLS technology, path is divided into 2 sections of LSP（Label
Switch Path, label switched path）, respectively DCBR-DCPE（IDC Provider Edge, IDC Provider Edge
Router）, and UPE（User Provider Edge, user side service provider edge router）- DCBR, by DCBR-DCPE
Path be referred to as the path that becomes more meticulous, by the path of UPE-DCBR be referred to as converge rear path, shortest path is two sections of bondings of LSP.
Fig. 3 is the realization principle schematic diagram of the virtual machine that the disclosure accesses crossing internet data center IDC migrations.
As shown in figure 3, the disclosure uses MPLS technology, network segment route and virtual machine (vm) migration are produced/32 routes（That is,
Host routes）By MPLS LDP（Label Distribution Protocol, label distribution protocol）And MP-BGP
（Multiprotocol Extensions for BGP, BGP multi-protocols extend）Technology is distributed to DCBR.
DCBR is a new network element, its major function be when ejecting label after the label route for receiving DC-PE,
After carrying out route assemblage, to converge route assignment label, label routing is then distributed to UPE.So, for virtual machine (vm) migration
The fine route for producing only is stored in DCBR, the diffusion of fine route can be avoided, while be sent to for the route after convergence by DCBR
UPE, user only obtains network segment route, therefore can realize that virtual machine (vm) migration is fully transparent to user, access of the user to virtual machine
Rotating for flow can be avoided after DCBR optimal route selections.
Fig. 4 is the schematic flow sheet of the method for virtual machine that is migrated across IDC of access of disclosure one embodiment.
As shown in figure 4, the embodiment may comprise steps of：
S402, before virtual machine carries out across IDC migration, DCBR receives the virtual machine institute that virtual machine is issued by a DCPE
The network segment route of category；
For example, when virtual machine is in an IDC, virtual machine sends to a DCPE, first its network segment route
Network route belonging to the virtual machine that DCPE will be received again is sent to DCBR.
S404, UPE is published to by the network segment route belonging to virtual machine.
S406, migrates during to two IDC in response to virtual machine from an IDC, and DCBR receives the virtual of the 2nd DCPE issues
The Host routes of machine, wherein, IP address of the virtual machine in transition process keeps constant, and produces virtual machine on the 2nd DCPE
Host routes；
For example, because IP address of the virtual machine in transition process keeps constant, being moved to from an IDC in virtual machine
During two IDC, the Host routes of virtual machine are formed first on the 2nd DCPE, then the 2nd DCPE is again by the main frame road of virtual machine
By being distributed to DCBR.
It is poly- that network segment route belonging to the virtual machine that S408, DCBR will be received carries out route with the Host routes of virtual machine
Close, and the route after polymerization is distributed to UPE；
Specifically, after virtual machine moves to the 2nd DC from a DC, due to receiving two routing iinformations of virtual machine,
That is, the Host routes of network segment route and virtual machine belonging to virtual machine, accordingly, it would be desirable to gather to the two routes on DCBR
Close, the route after polymerization is distributed to UPE by network segment route of the route after polymerization belonging to virtual machine, DCBR again.
In this embodiment, due to stored in DCBR belonging to virtual machine the network segment route and virtual machine main frame road
By, therefore, after DCBR receives access request of the user to virtual machine, can by by the destination address of virtual machine with deposited
The method that the routing iinformation of the virtual machine of storage is matched finds most fine path, and then can directly be accessed based on the path
The virtual machine in IDC after to migration, it is to avoid access request detouring to former IDC.
After step S408, migrated to the 2nd IDC from an IDC in virtual machine, if user is initiated to virtual
The access request of machine, then route the access request initiated after DCBR receptions user passes through to be polymerized, and the route after being now polymerized is
Network segment route belonging to virtual machine；
The purpose IP address that DCBR will be carried in request are matched with the routing iinformation of the virtual machine for receiving, and then according to
Purpose IP address match the Host routes of virtual machine；
Access request can be forwarded to the 2nd DCPE by the Host routes of the virtual machine by matching, DCBR, to realize
Access to virtual machine.And then avoid after access request reaches DCBR first around a DCPE, then passed through by a DCPE
DCBR is forwarded to the 2nd DCPE.
Before step S406, before virtual machine carries out across IDC migration, if user initiates to ask the access of virtual machine
Ask, then DCBR receives user and route the access request initiated by the network segment belonging to virtual machine；
DCBR is matched according to the purpose IP address carried in request with the routing iinformation of the virtual machine for receiving, due to this
When DCBR in only store network segment route belonging to virtual machine, therefore according to belonging to purpose IP address can only match virtual machine
The network segment route；
It is route by the network segment belonging to the virtual machine that matches and access request is forwarded to a DCPE, realizes to virtual
The access of machine.
Further, DCBR receives the network segment road belonging to the virtual machine that a DCPE passes through MPLS LDP and MP-BGP issue
By.
Further, DCBR receives the Host routes of the virtual machine that the 2nd DCPE is issued by MPLS LDP and MP-BGP.
Fig. 5 is the schematic flow sheet of the method for virtual machine that is migrated across IDC of access of another embodiment of the disclosure.
As shown in figure 5, the embodiment may comprise steps of：
S502, virtual machine VM1 belong to DC1, and the network segment is 100.1.0.0/16, VM1 by DC-PE1 using MPLS LDP and
Its network segment route is published to DCBR by MP-BGP, and DCBR uses similar technology（That is, MPLS LDP and MP-BGP）By what is received
Network segment route is distributed to UPE, and now, user can realize the access to the VM1 in DC1 by way of Tag switching, referring to
In Fig. 5 1. -4.；
S504, when virtual machine VM1 is migrated to DC2 from DC1, its IP address keeps constant, is still 100.1.0.10/32,
The Host routes of 100.1.0.10/32 are produced first on DC-PE2, while DC-PE2 is main frame route assignment label, and is passed through
The Host routes of VM1 are distributed to DCBR by MPLS LDP and MP-BGP, referring in Fig. 5 5. -7.；
S506, DCBR eject label after receiving label routing, and the route of the 10.1.0.0/16 for then and before receiving is carried out
Route aggregation, is the route assignment label after polymerization, and is distributed to UPE, and list item can be mitigated to user's issue polyaluminium chloride PAC
Pressure, referring in Fig. 5 8. -9.；
S508, when user access VM1 when, by polymerization route LSP to DCBR, DCBR according to routing priority, due to/32
Route has limit priority, therefore DCBR is forwarded to DC-PE2 by the Path selection that becomes more meticulous selected again, and it is right then to realize
The access of VM1, referring in Fig. 5 10..
It will appreciated by the skilled person that realize the whole and part steps of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computing device read/write memory medium, the journey
Sequence upon execution, performs the step of including above method embodiment, and foregoing storage medium can include ROM, RAM, magnetic disc
It is various with CD etc. can be with the medium of store program codes.
Fig. 6 is the structural representation of the DCBR of disclosure one embodiment.
As shown in fig. 6, the router 60 in the embodiment can include network segment route receiving unit 602, network segment route hair
Cloth unit 604, Host routes receiving unit 606 and polyaluminium chloride PAC release unit 608.Wherein,
The network segment route receiving unit 602, and a DCPE is passed through for receiving virtual machine before virtual machine carries out across IDC migration
Network segment route belonging to the virtual machine of issue；
The network segment route release unit 604, for the network segment route belonging to virtual machine to be published into UPE；
Host routes receiving unit 606, for being migrated during to two IDC from an IDC in response to virtual machine, receives second
The Host routes of the virtual machine of DCPE issues, wherein, IP address of the virtual machine in transition process keeps constant, and second
The Host routes of virtual machine are produced on DCPE；
Polyaluminium chloride PAC release unit 608, for the main frame of the network segment route belonging to the virtual machine that will receive and virtual machine
Route carries out route aggregation, and the route after polymerization is distributed into UPE.
In this embodiment, due to stored in DCBR belonging to virtual machine the network segment route and virtual machine main frame road
By, therefore, after DCBR receives access request of the user to virtual machine, can by by the destination address of virtual machine with deposited
The method that the routing iinformation of the virtual machine of storage is matched finds most fine path, and then can directly be accessed based on the path
The virtual machine in IDC after to migration, it is to avoid access request detouring to former IDC.
Fig. 7 is the structural representation of the DCBR of another embodiment of the disclosure.
As shown in fig. 7, compared with the embodiment in Fig. 6, the router 70 in the embodiment can also include that first accesses
The request reception unit 702, first via is by the access request retransmission unit 706 of matching unit 704 and first.Wherein,
First access request receiving unit 702, for being migrated to the 2nd IDC from an IDC in virtual machine, if user
The access request to virtual machine is initiated, then receives the access request that user is initiated by the route after polymerization；
The first via by matching unit 704, for the road according to the purpose IP address carried in request and the virtual machine for receiving
Matched by information, obtained the Host routes of virtual machine；
First access request retransmission unit 706, forwards access request for the Host routes by the virtual machine for obtaining
To the 2nd DCPE, to realize the access to virtual machine.
Fig. 8 is the structural representation of the DCBR of the another embodiment of the disclosure.
As shown in figure 8, compared with the embodiment in Fig. 6, the router 80 in the embodiment can also include that second accesses
Request reception unit 802, the access request retransmission unit 806 of secondary route matching unit 804 and second.Wherein,
Second access request receiving unit 802, for before virtual machine carries out across IDC migration, if user is initiated to void
The access request of plan machine, then receive user and route the access request initiated by the network segment belonging to virtual machine；
Secondary route matching unit 804, for the road according to the purpose IP address carried in request and the virtual machine of reception
Matched by information, obtained the network segment route belonging to virtual machine；
Second access request retransmission unit 806, route access request for the network segment belonging to the virtual machine by obtaining
A DCPE is forwarded to, to realize the access to virtual machine.
Further, network segment route receiving unit receives the virtual machine that a DCPE is issued by MPLS LDP and MP-BGP
Affiliated network segment route.
Further, Host routes receiving unit receives the virtual machine that the 2nd DCPE is issued by MPLS LDP and MP-BGP
Host routes.
Fig. 9 is the structural representation of the system of virtual machine that is migrated across IDC of access of disclosure one embodiment.
As shown in figure 9, system 90 in the embodiment can include UPE902, a DCPE904, the 2nd DCPE906 with
And DCBR908.Wherein, DCBR908 can be realized by previous embodiment.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and it
The difference of his embodiment, identical and similar part can be with cross-reference between each embodiment.For device embodiment
For, because it is substantially similar to embodiment of the method, so description is fairly simple, related part may refer to embodiment of the method
Partial explanation.
Disclosure above-described embodiment is realized by network technology, is improved based on existing MPLS technology completely, right
Forwarded and handling process do not carry out larger change, and only DCBR routers are needed to carry out some function supports, therefore right
Mandate is low, networking flexibility, is applicable scene extensively, and can solve newly to reach the standard grade user and online user has led because empty machine is migrated simultaneously
The flow of cause rotates problem.Additionally, the disclosure is pure Networking Solutions ＆ provisioned, and without the cooperation of other operation systems, whole migration
Process is fully transparent to user.
It is emphasized that disclosure above-described embodiment also can well avoid flow from rotating particularly with online user
Problem.Because, for each online user, the virtual machine that the data that it flows through DCBR every time can all be locally stored according to DCBR
Routing iinformation matches the Host routes of accurate virtual machine, can directly by data stream guiding to the virtual machine in the 2nd IDC,
Without being detoured in an IDC further according to network segment route.
Although describing the disclosure with reference to exemplary embodiment, it should be appreciated that the disclosure is not limited to above-mentioned exemplary
Embodiment.It will be obvious to those skilled in the art that can be changed under conditions of without departing substantially from the scope of the present disclosure and spirit
Exemplary embodiments mentioned above.The scope of appended claim should be endowed explanation most wide, such be repaiied with comprising all
Change and equivalent 26S Proteasome Structure and Function.
Claims (9)
1. a kind of method of the virtual machine for accessing crossing internet data center IDC migration, it is characterised in that including：
Before virtual machine carries out across IDC migration, IDC border routers receive the virtual machine and pass through an IDC service provider
Network segment route belonging to the virtual machine of edge router issue；
Network segment route belonging to the virtual machine is published to user side service provider edge router；
Migrated during to two IDC from an IDC in response to the virtual machine, the IDC border routers receive the 2nd IDC services
The Host routes of the virtual machine of Provider edge router issue, wherein, IP ground of the virtual machine in transition process
Location keeps constant, and the Host routes of the virtual machine are produced in the 2nd IDC service provider edge routers；
Network segment route belonging to the virtual machine that the IDC border routers will be received is route with the Host routes of virtual machine
Polymerization, and the route after polymerization is distributed to the user side service provider edge router；
Wherein, methods described also includes：
Migrated to the 2nd IDC from an IDC in the virtual machine, if user initiates the access request to the virtual machine,
Then the IDC border routers receive the access request that the user is initiated by the route after polymerization；
The IDC border routers enter according to the purpose IP address carried in request with the routing iinformation of the virtual machine for receiving
Row matching, obtains the Host routes of the virtual machine；
Access request is forwarded to the 2nd IDC Provider Edge road by the Host routes of the virtual machine for obtaining
By device, to realize the access to the virtual machine.
2. the method for the virtual machine for accessing crossing internet data center IDC migration according to claim 1, its feature exists
In methods described also includes：
Before the virtual machine carries out across IDC migration, if user initiates the access request to the virtual machine, the IDC
Border router receives the user and route the access request initiated by the network segment belonging to the virtual machine；
The IDC border routers enter according to the purpose IP address carried in request with the routing iinformation of the virtual machine for receiving
Row matching, obtains the network segment route belonging to the virtual machine；
It is route by the network segment belonging to the virtual machine that obtains and access request is forwarded to an IDC service provider side
Edge router, to realize the access to the virtual machine.
3. the method for the virtual machine for accessing crossing internet data center IDC migration according to claim 1, its feature exists
In the IDC border routers are received an IDC service provider edge routers and assisted by multiprotocol label switching
Network segment route belonging to view-label distribution protocol and the virtual machine of Border Gateway Protocol multi-protocols extension issue.
4. the method for the virtual machine for accessing crossing internet data center IDC migration according to claim 1, its feature exists
In the IDC border routers are received the 2nd IDC service provider edge routers and assisted by multiprotocol label switching
The Host routes of view-label distribution protocol and the virtual machine of Border Gateway Protocol multi-protocols extension issue.
5. a kind of Internet data center IDC border routers, it is characterised in that including：
The network segment route receiving unit, is serviced by an IDC for receiving the virtual machine before virtual machine carries out across IDC migration
Network segment route belonging to the virtual machine of Provider edge router issue；
The network segment route release unit, for the network segment route belonging to the virtual machine to be published into user side Provider Edge
Router；
Host routes receiving unit, for being migrated during to two IDC from an IDC in response to the virtual machine, receives the 2nd IDC
The Host routes of the virtual machine of service provider edge router issue, wherein, the virtual machine is in transition process
IP address keeps constant, and the Host routes of the virtual machine are produced in the 2nd IDC service provider edge routers；
Polyaluminium chloride PAC release unit, is carried out for the network segment route belonging to the virtual machine that will receive with the Host routes of virtual machine
Route aggregation, and the route after polymerization is distributed to the user side service provider edge router；
Wherein, the IDC border routers also include：
First access request receiving unit, for being migrated to the 2nd IDC from an IDC in the virtual machine, if user sends out
The access request to the virtual machine is played, then receives the access request that the user is initiated by the route after polymerization；
The first via is believed by matching unit for the route according to the purpose IP address carried in request and the virtual machine of reception
Breath is matched, and obtains the Host routes of the virtual machine；
First access request retransmission unit, institute is forwarded to for the Host routes by the virtual machine for obtaining by access request
The 2nd IDC service provider edge routers are stated, to realize the access to the virtual machine.
6. IDC border routers according to claim 5, it is characterised in that the IDC border routers also include：
Second access request receiving unit, for before the virtual machine carries out across IDC migration, if user is initiated to the void
The access request of plan machine, then receive the user and route the access request initiated by the network segment belonging to the virtual machine；
Secondary route matching unit, for being believed with the route of the virtual machine for receiving according to the purpose IP address carried in request
Breath is matched, and obtains the network segment route belonging to the virtual machine；
Second access request retransmission unit, forwards access request for the network segment route belonging to the virtual machine by obtaining
To an IDC service provider edge routers, to realize the access to the virtual machine.
7. IDC border routers according to claim 5, it is characterised in that the network segment route receiving unit receives institute
An IDC service provider edge routers are stated to be assisted by multi protocol label switching protocol-label distribution protocol and borde gateway
Network segment route belonging to the virtual machine of view multi-protocols extension issue.
8. IDC border routers according to claim 5, it is characterised in that the Host routes receiving unit receives institute
The 2nd IDC service provider edge routers are stated to be assisted by multi protocol label switching protocol-label distribution protocol and borde gateway
The Host routes of the virtual machine of view multi-protocols extension issue.
9. a kind of system of the virtual machine for accessing crossing internet data center IDC migration, it is characterised in that including user side service
Provider edge router, an IDC service provider edge routers, the 2nd IDC service provider edge routers and
IDC border routers any one of claim 5-8.
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| CN104935573B (en) * | 2015-04-24 | 2019-06-04 | 新华三技术有限公司 | Virtual machine migration method and device |
| CN106302171B (en) * | 2015-05-13 | 2019-09-17 | 新华三技术有限公司 | A kind of virtual machine moves into detection method and device |
| CN108259532B (en) * | 2016-12-29 | 2021-01-22 | 中国电信股份有限公司 | Scheduling method and device of cloud resources |
| CN108023774B (en) * | 2017-12-08 | 2021-07-16 | 锐捷网络股份有限公司 | Cross-gateway migration method and device |
| CN109039902B (en) * | 2018-07-24 | 2021-02-26 | 新华三技术有限公司 | Method and device for forwarding multicast message |
| CN111988223B (en) * | 2020-08-19 | 2022-04-08 | 杭州迪普科技股份有限公司 | Virtual machine migration method and network system |
| CN114531385B (en) * | 2020-10-31 | 2022-12-27 | 华为技术有限公司 | Method, device and system for sending message |
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