CN101345686B - Processing method, apparatus and system of virtual special local area network service loop - Google Patents
Processing method, apparatus and system of virtual special local area network service loop Download PDFInfo
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- CN101345686B CN101345686B CN2008101183930A CN200810118393A CN101345686B CN 101345686 B CN101345686 B CN 101345686B CN 2008101183930 A CN2008101183930 A CN 2008101183930A CN 200810118393 A CN200810118393 A CN 200810118393A CN 101345686 B CN101345686 B CN 101345686B
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Abstract
An embodiment of the invention relates to a processing method of a virtual special local area network service loop, a device and a system, comprising that: when an attaching device, a first attached device and a second attached device are on a loop, the attaching device transmits connectivity detecting information; after the connectivity detecting information is transmitted through a management pseudo circuit, when the attaching device receives the connectivity detecting information in scheduled time, a service channel in a standby state is set as a main state. The processing method of the virtual special local area network service loop, the device and the system provided in the embodiment of the invention, problems of the virtual special local area network service loop are fast solved through adopting Ethernet to operate, manage and maintain, with wide application range.
Description
Technical field
The present invention relates to communication technical field, especially a kind of processing method of virtual special local area network service loop, device and system.
Background technology
For solving virtual special local area network service (Virtual Private LAN Service; Hereinafter to be referred as: full connectivity problem VPLS); (HierarchicalVirtual Private LAN Service is hereinafter to be referred as HVPLS) networking plan to have produced classification virtual special local area network service.As shown in Figure 1, be the basic network topology sketch map of HVPLS in the prior art.In the basic structure of HVPLS, can service provider edge router (Provider Edge, hereinafter to be referred as: PE) be divided into two kinds:
(1) PE of lower floor (Underlayer PE, hereinafter to be referred as: UPE), user's convergence device, (Customer Edge is hereinafter to be referred as equipment CE) promptly directly to connect customer edge network equipment.UPE only need connect with wherein PE of basic VPLS fully-connected network.UPE support route and multiprotocol label switching (Multi-protocol Label Switching, hereinafter to be referred as: MPLS) encapsulation.
If a UPE connects a plurality of CE, and possess basic bridging functionality, Frame is only transmitted and need be carried out at UPE so, has alleviated the burden of SPE like this.
(2) upper strata PE (Superstratum PE, hereinafter to be referred as: SPE), link UPE and also be positioned at the inner nucleus equipment of basic VPLS fully-connected network.SPE connects with other inner equipment of basic VPLS fully-connected network.For SPE; The UPE that is attached thereto is just as a customer edge network equipment (Customer Edge; Hereinafter to be referred as: CE); The tseudo circuit of setting up between UPE and the SPE (Pseudo-Wire, hereinafter to be referred as: PW) will as the line attachment of SPE (Attachment Circuit, hereinafter to be referred as: AC).
At present HVPLS is being applied in a lot of metropolitan area networks, and be used for voice-bearer, video, Virtual Private Network (Virtual Private Network, hereinafter to be referred as: VPN) wait the very high business of reliability that requires.And HVPLS is for fear of loop, and each UPE only sets up link with a SPE, if but like this this SPE break down, the customer service that this UPE inserts down all will be interrupted.In order to improve reliability, UPE just needs to set up link with two SPE, has set up two PW between this UPE and two SPE, but has constituted loop like this, and the flow that promptly takes place from UPE possibly got back to UPE again through these two SPE.Present employing Virtual Router Redundacy Protocol (Virtual Router Redundancy Protocol, hereinafter to be referred as: VRRP) abolish loop.
As shown in Figure 2; Be the schematic network structure of available technology adopting VRRP processing VPLS loop, a managing virtual exchange of establishment instance between UPE and SPE (Virtual Switch Instance, hereinafter to be referred as: VSI); On the Management virtual switching instance between two SPE, move VRRP; VRRP can one SPE be set to mainly use state, another SPE is set to stand-by state, the SPE that is in stand-by state is changed to stand-by state (not forwarding state service message) with the PW between this SPE and the UPE; When transmit that professional SPE breaks down or this SPE and UPE between link break down; VRRP can detect, and the PW that originally is in stand-by state is set to the master and uses state, and these PW just begin to transmit service message.Yet the inventor finds in research process of the present invention, adopts VRRP to abolish loop, and speed is slower, needs 200ms; Adopting VRRP to abolish loop, is proprietary protocol, and needing two SPE all is the equipment of same producer, and these two SPE equipment are not with producer's equipment in a lot of networks, have inter-communicating problem; Adopt the VRRP scheme; In order to accelerate detection speed; Usually on VRRP, also to move two-way forwarding detect (Bidirectional Forwarding Detection, hereinafter to be referred as: BFD), between SPE and UPE, also to move BFD simultaneously; Cause having moved a large amount of BFD on the SPE, increased the complexity of SPE equipment.
And; Mainly adopt at present Option A scheme during the interdepartmental system of VPLS; Be interdepartmental system four autonomous system edge routers (Autonomous System Boundary Relay, hereinafter to be referred as: ASBR) press square shape and form a loop, at this moment need to solve loop problem equally.Yet the VRRP scheme can only solve the loop problem that three equipment are formed, and can not be used in the loop control of the interdepartmental system of VPLS.
Summary of the invention
The embodiment of the invention provides a kind of processing method, device and system of virtual special local area network service loop, solves the virtual special local area network service loop problem fast, satisfies professional requirement such as voice, video, VPN.
The embodiment of the invention provides a kind of processing method of virtual special local area network service loop; Said method is applicable to dual-homed equipment; Said dual-homed equipment be specially home device belong to first by home device and second by home device; Said home device and said first is that the master uses state by the service channel between the home device, can transmit user's service message, and said home device and said second is a stand-by state by the service channel between the home device; Can not transmit user's service message, said method comprises:
When said home device, said first by home device and said second by home device on a loop time, said home device is sent detection of connectivity message;
After said detection of connectivity message is transmitted through the management tseudo circuit; When said home device is not received said detection of connectivity message in the given time; The service channel of stand-by state is set to the main state of using; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates.
The embodiment of the invention also provides a kind of processing method of virtual special local area network service loop, comprising:
Receive detection of connectivity message through the management tseudo circuit, and transmit said detection of connectivity message; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates, and is used to transmit said detection of connectivity message.
The embodiment of the invention also provides a kind of processing unit of virtual special local area network service loop; Said device is applicable to dual-homed equipment; Said dual-homed equipment be specially home device belong to first by home device and second by home device; Said home device and said first is that the master uses state by the service channel between the home device, can transmit user's service message, and said home device and said second is a stand-by state by the service channel between the home device; Can not transmit user's service message, said device comprises:
Sending module is used on a loop time, being sent detection of connectivity message by home device by home device and said second when said home device, said first;
The service channel state setting module; Be used for said detection of connectivity message through after managing the tseudo circuit transmission; When said home device is not received said detection of connectivity message in the given time; It is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop that the service channel of stand-by state is set to the main state, said management tseudo circuit used, and between adjacent two equipment on the said loop, creates.
The embodiment of the invention also provides a kind of processing unit of virtual special local area network service loop, comprising:
The transparent transmission module is used for receiving detection of connectivity message through the management tseudo circuit, and transmits said detection of connectivity message; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates, and is used to transmit the tseudo circuit of said detection of connectivity message.
The embodiment of the invention also provides a kind of treatment system of virtual special local area network service loop; Comprise home device and by home device, said by home device comprise first by home device and second by home device, said home device belong to first by home device and second by home device; Said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message, said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message; Wherein
Home device is used on a loop time, being sent detection of connectivity message by home device by home device and said second when said home device, said first; When not receiving said detection of connectivity message in the given time, the service channel of stand-by state is set to the main state of using;
By home device; Be used for receiving detection of connectivity message through the management tseudo circuit; And transmit said detection of connectivity message; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates.
The processing method of the virtual special local area network service loop that the embodiment of the invention provides, device and system; Through adopting ethernet operation, management, maintenance; Solve the virtual special local area network service loop problem fast; Satisfied professional requirement such as voice, video, VPN, and few to the networking component restriction, applied range.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the basic network topology sketch map of HVPLS in the prior art;
Fig. 2 handles the schematic network structure of VPLS loop for available technology adopting VRRP;
Fig. 3 is a VPLS basic network topology sketch map in embodiment of the invention VPLS loop circuit processing method, device and the system applies scene;
Fig. 4 is the process flow sketch map of the embodiment of the invention one VPLS loop;
Fig. 5 is the processing method schematic network structure of the embodiment of the invention two VPLS loops;
Fig. 6 is the process flow sketch map of the embodiment of the invention two VPLS loops;
Fig. 7 is the processing method schematic network structure of the embodiment of the invention three VPLS loops;
Fig. 8 is the process flow sketch map of the embodiment of the invention three VPLS loops;
Fig. 9 is the processing unit structural representation of the embodiment of the invention one VPLS loop;
Figure 10 is the processing unit structural representation of the embodiment of the invention two VPLS loops;
Figure 11 is the processing unit structural representation of the embodiment of the invention three VPLS loops;
Figure 12 is the treatment system structural representation of embodiment of the invention VPLS loop.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Virtual special local area network service (Virtual Private LAN SerVice; Hereinafter to be referred as: main purpose VPLS) is exactly through packet switching network (Packet Switch Network; Hereinafter to be referred as: PSN) connect a plurality of Ethernet local area network (LAN)s (Local Area Network; Hereinafter to be referred as: the LAN) network segment is worked them as a LAN.
As shown in Figure 3, be VPLS basic network topology sketch map in processing method, device and the system applies scene of embodiment of the invention VPLS loop, a VPLS comprises a plurality of websites (site) that are connected to PE, realizes LAN emulation (Emulated LAN).
In VPLS; PSN network analog bridge equipment; Based on medium access control (Media AccessControl, hereinafter to be referred as: MAC) address or MAC Address and virtual local area network tags (Virtual LocalArea Networks Tag, hereinafter to be referred as: VLAN Tag) transmit.
The basic conception of VPLS mainly comprises:
PW:PW is the virtual connection between two PE, transmission frame between two PE; Set up and safeguard that the work of PW utilizes signaling to accomplish by PE, and safeguard the state information of PW by two end points PE of PW.
VSI: each VSI provides independent VPLS service, and VSI realizes the ether bridging functionality, and the PW that can terminate.
Virtual circuit (Virtual Circuit, hereinafter to be referred as: VC): a kind of unidirectional logic between two nodes connects; A PW is made up of a pair of reverse VC; A VC also can be used as unidirectional PW use in some applications.
Line attachment (Attachment Circuit, hereinafter to be referred as: AC): CE is linked into PE through AC; AC can be a physical link, also can be logical links.AC is used for transmission frame between CE and the PE.
In order to prevent that loop from appearring in flow, the PE among the same VPLS must be full the connection,, has tseudo circuit PW each other that is, and the message from the entry PE to the outlet PE can directly arrive, and needn't pass through middle PE and transmit.Connect entirely between the VPLS network requirement PE equipment, every PE will connect with other PE of same VPLS like this.If a VPLS has N platform PE equipment, this VPLS just has N * (N-1) 2 connections of ÷.When the PE of VPLS increased, the linking number of VPLS just became N square of progression to increase.The embodiment of the invention can be avoided full connection and the loop problem of VPLS.
As shown in Figure 4; Process flow sketch map for the embodiment of the invention one VPLS loop; Present embodiment is applicable to dual-homed equipment, said dual-homed equipment be specially home device belong to first by home device and second by home device, said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message; Said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message, and said method specifically can comprise the steps:
Step 11, when said home device, said first by home device and said second by home device on a loop time, said home device is sent detection of connectivity message (Continuity CheckMessage);
After step 12, said CCM transmitted through management PW, when said home device was not received said CCM in the given time, the service channel of stand-by state was set to the main state of using.
Present embodiment sends CCM through said home device; When said home device does not receive said CCM in the given time; The service channel of stand-by state is set to the main state of using; Continue to transmit user's service message, thereby solved the loop problem of VPLS fast, satisfied professional requirement such as voice, video, VPN.
The application scenarios of the processing method of the embodiment of the invention two VPLS loops is: in the networking plan of HVPLS, a UPE is dual-homed to a SPE and the 2nd SPE, and the three forms a loop.
On a last embodiment basis, in the present embodiment, said service channel is specially professional PW, and said home device is specially UPE, and said first is specially a SPE by home device, and said second is specially the 2nd SPE by home device.
As shown in Figure 5, be the processing method schematic network structure of the embodiment of the invention two VPLS loops, specifically can comprise a SPE SPE1; The 2nd SPE SPE2; The UPE dual homed belongs to a SPE and the 2nd SPE, and its workflow is as shown in Figure 6, is the process flow sketch map of the embodiment of the invention two VPLS loops; On technical scheme shown in Figure 4 basis, step 11 specifically can for:
Step 111, when said UPE, a said SPE and said the 2nd SPE are on a loop, said UPE sends CCM;
Specifically can comprise before the step 111:
Said CCM arrives a said SPE through the management PW between a said UPE and the said SPE; Management PW through between a said SPE and said the 2nd SPE arrives said the 2nd SPE, gets back to said UPE through the management PW between said the 2nd SPE and the said UPE.
On technical scheme shown in Figure 4 basis, said step 12 specifically can comprise:
Professional PW between step 122, said UPE and said the 2nd SPE is set to stand-by state, execution in step 111;
The professional PW of step 123, stand-by state is set to main use state, execution in step 111.
In the present embodiment, the CCM time-out time should be greater than the link failure convergence time between a SPE and the 2nd SPE.
Present embodiment according to said Management virtual switching instance creative management PW, moves 802.1ag through creative management VSI on the UPE of HVPLS and two SPE then on the Management virtual switching instance of said UPE, said UPE sends CCM; If said UPE receives said CCM in the given time, the professional PW of a UPE is made as stand-by state, otherwise the professional PW of stand-by state is set to the main state of using; Said professional PW just can transmit user's service message; Because 802.1ag is realized by hardware that normally speed can reach 50 milliseconds, even tens milliseconds; Thereby solved the loop problem of VPLS fast, satisfied professional requirement such as voice, video, VPN; And available technology adopting STP agreement solves the VPLS loop problem, and owing to the STP agreement is realized by software, so detection speed is slower, is generally tens seconds even tens seconds.
Further, this mode is only operated on UPE, as long as UPE supports 802.1ag, SPE is not had specific (special) requirements, and SPE need be the VPLS of support standard only, does not have other requirements, thereby few to UPE and SPE restriction, does not have inter-communicating problem, applied range.
The application scenarios of the processing method of the embodiment of the invention three VPLS loops is: adopt the OptionA scheme during the interdepartmental system of VPLS; Promptly adopt the square shape networking plan; First autonomous system (the AutonomousSystem; Hereinafter to be referred as: first autonomous system edge router AS) (Autonomous System EdgeRelay, hereinafter to be referred as: ASBR) the 4th ASBR and the 2nd ASBR with the 3rd ASBR, the 2nd AS forms a loop.
On the processing method basis of the embodiment of the invention one VPLS loop; In this enforcement; Said service channel specifically can be the outgoing interface of professional VSI; Said home device is specially a said ASBR, and said first is specially said the 3rd ASBR by home device, and said second is specially said the 2nd ASBR by home device.
As shown in Figure 7; Be the processing method schematic network structure of the embodiment of the invention three VPLS loops, specifically can comprise an ASBR ASBR1 and the 3rd ASBR ASBR3 of an AS AS1, and the 2nd ASBR ASBR2 of the 2nd AS AS2 and the 4th ASBR ASBR4; Its workflow is as shown in Figure 8; Be the process flow sketch map of the embodiment of the invention three VPLS loops, on technical scheme shown in Figure 4 basis, step 11 specifically can for:
Specifically can comprise before the step 112:
Said CCM arrives said the 2nd ASBR through the management PW between a said ASBR and said the 2nd ASBR; Management PW through between said the 2nd ASBR and said the 4th ASBR arrives said the 4th ASBR; Management PW through between said the 4th ASBR and said the 3rd ASBR arrives said the 3rd ASBR, gets back to a said ASBR through the management PW between said the 3rd ASBR and the said ASBR.
On technical scheme shown in Figure 4 basis, step 12 specifically can comprise:
The outgoing interface of professional VSI between step 125, a said ASBR and the 3rd ASBR or the 2nd ASBR is set to stand-by state, execution in step 112;
The outgoing interface of the professional VSI of step 126, stand-by state is set to main use state, execution in step 112.
In the present embodiment, said CCM detection time is greater than said ASBR in the same AS and the link failure convergence time between said the 3rd ASBR.
Present embodiment is created said Management virtual switching instance through in the interdepartmental system Option A scheme of VPLS on every the ASBR that forms loop, between two adjacent on loop ASBR, create said management PW, on an ASBR, moves 802.1ag then, sends CCM; Receive said CCM in the given time if send the ASBR of CCM; The outgoing interface of a professional VSI is set to stand-by state; Otherwise the outgoing interface of the professional VSI of stand-by state is set to the main state of using; Can continue to transmit user's service message like this, thereby solve the interdepartmental system loop problem of VPLS fast, satisfy professional requirement such as voice, video, VPN;
Further, this mode is only operated on some ASBR, and other ASBR is not had specific (special) requirements, and this ASBR supports that 802.1ag gets final product, and does not have inter-communicating problem, applied range.
The embodiment of the invention four solves the processing method of VPLS loop, specifically can comprise:
PW receives CCM through management, and transmits said CCM; Said management PW is used to transmit said CCM.
Present embodiment has been realized quick solution VPLS loop problem through transmitting said CCM.
The processing unit of the embodiment of the invention one VPLS loop is applicable to dual-homed equipment; Said dual-homed equipment be specially home device belong to first by home device and second by home device; Said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message, said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message.
As shown in Figure 9, be the processing unit structural representation of the embodiment of the invention one VPLS loop, specifically can comprise sending module 23 and service channel state setting module 24, service channel state setting module 24 is connected with sending module 23.Wherein, operation module 23 be used for when said home device, said first by home device and said second by home device on a loop time, said home device transmission CCM; Service channel state setting module 24 is used for said CCM through after managing the PW transmission, and when said home device was not received said CCM in the given time, the service channel of stand-by state was set to the main state of using.
Present embodiment sends CCM through sending module 23, and service channel state setting module 24 is not received said CCM through said management PW in the given time, the service channel of stand-by state is provided with to lead uses state, thereby solved the loop of VPLS fast; Satisfied professional requirement such as voice, video, VPN.
The application scenarios of the processing method of the embodiment of the invention two VPLS loops is: in the networking plan of HVPLS, a UPE is dual-homed to a SPE and the 2nd SPE, and the three forms a loop.
On a last embodiment basis; In the processing unit of inventive embodiments two VPLS loops; Said service channel is specially professional tseudo circuit, and said service channel is specially professional PW, and said home device is specially UPE; Said first is specially a SPE by home device, and said second is specially the 2nd SPE by home device.
Shown in figure 10; Processing unit structural representation for the embodiment of the invention two VPLS loops; Specifically can comprise: first Management virtual switching instance is set up module 211, the first management PW sets up module 221, first operation module 251, first sending module 231 and the first service channel state setting module 241; The first management PW sets up module 221 and sets up module 211 with first Management virtual switching instance and be connected; The first operation module 251 is set up module 211 with first Management virtual switching instance respectively and is set up module 221 and be connected with the first management PW, and first sending module 231 and first moves module 251 and is connected, and the first service channel state setting module 241 is connected with first sending module 231.Wherein, first Management virtual switching instance is set up module 211 and is used on PE all on the loop, creating respectively the identical said Management virtual switching instance of identifier, and said Management virtual switching instance is used to said CCM and realizes the ether bridging functionality; The first management PW sets up module 221 and is used for according to said Management virtual switching instance, between two adjacent on loop PE, creates said management PW; The first operation module 251 is used on the Management virtual switching instance of said UPE, moving 802.1ag, detects the VPLS loop; Wherein, 802.1ag is a kind of Ethernet OAM, is used to realize fault detect end to end, further, in this enforcement, is used to detect the HVPLS loop; First sending module 231 is used for when said UPE, a said SPE and said the 2nd SPE are on a loop, and said UPE sends CCM; The first service channel state setting module 241 is used for said CCM through after managing the tseudo circuit transmission, judges whether said UPE receives said CCM in the given time; If the professional PW between a said UPE and the SPE is set to stand-by state; Otherwise the professional PW of stand-by state is set to the main state of using.
Present embodiment is set up module 211 and the said first management PW through said first Management virtual switching instance and is set up module 221 creative management VSI and management PW on the UPE of HVPLS and two SPE respectively; The said then first operation module 251 is moved 802.1ag on the Management virtual switching instance of said UPE, first sending module 231 sends CCM; When the said first professional PW state setting module 241 is received said CCM in the given time, the professional PW of a UPE is made as stand-by state, otherwise the professional PW of stand-by state is set to mainly use state, said professional PW just can transmit user's business; Because 802.1ag realizes by hardware that normally detection speed can reach 50 milliseconds, even tens milliseconds, thereby solve the loop problem of VPLS fast, satisfied professional requirement such as voice, video, VPN.
Further, as long as UPE supports 802.1ag, SPE need be the VPLS of support standard only, does not have other requirements, and is few to UPE and SPE restriction, applied range.
The application scenarios of the processing unit of the embodiment of the invention three VPLS loops is: adopt the interdepartmental system of VPLS OptionA scheme; Promptly adopt the square shape networking plan; The 4th ASBR of the ASBR of the one AS and the 3rd ASBR, the 2nd AS and the 2nd ASBR form a loop, and an ASBR belongs to the 3rd ASBR and the 2nd ASBR.
On the processing unit basis of the embodiment of the invention one VPLS loop; In this enforcement, said service channel is specially the outgoing interface of VSI, and said home device is specially an ASBR; Said first is specially the 3rd ASBR by home device, and said second is specially the 2nd ASBR by home device.
Shown in figure 11; Processing unit structural representation for the embodiment of the invention three VPLS loops; Specifically can comprise: second Management virtual switching instance is set up module 212, the second management PW sets up module 222, second operation module 252, second sending module 232 and the second service channel state setting module 242; The second management PW sets up module 222 and sets up module 212 with second Management virtual switching instance and be connected; The second operation module 252 is set up module 212 with second Management virtual switching instance respectively and is set up module 222 and be connected with the second management PW, and second sending module 232 and second moves module 252 and is connected, and the second service channel state setting module 242 is connected with second sending module 232.Wherein, second Management virtual switching instance is set up module 212 and is used on ASBR all on the loop creating the identical Management virtual switching instance of identifier; Said Management virtual switching instance is used to said CCM and realizes the ether bridging functionality; Said Management virtual switching instance is used to said CCM and realizes the ether bridging functionality; The second management PW module 222 is used for according to said Management virtual switching instance, between two adjacent on loop ASBR, creates said management PW; The second operation module 232 is used on the said Management virtual switching instance of a said ASBR, moving 802.1ag, detects the interdepartmental system loop on the VPLS; Second sending module 232 is used for when a said ASBR, said the 2nd ASBR and said the 3rd ASBR are on a loop, and a said ASBR sends CCM; The second service channel state setting module 242 is used for said CCM through after managing the PW transmission, judges whether a said ASBR receives said CCM in the given time; If the outgoing interface of the professional VSI between a said ASBR and the 2nd ASBR or the 3rd ASBR is set to stand-by state; Otherwise the outgoing interface of the said professional VSI of stand-by state is set to the main state of using.
Present embodiment is through in the interdepartmental system Option A scheme of VPLS; Second Management virtual switching instance is set up module 212 and on every the ASBR that forms loop, is created said Management virtual switching instance; The second management PW sets up module 222 and between two adjacent on loop ASBR, creates said management PW; The second operation module 252 is moved 802.1ag on the Management virtual switching instance on the ASBR then, detects the VPLS loop, and second sending module 232 sends CCM; When the second professional VSI state setting module 242 is received said CCM in the given time; The outgoing interface of a professional VSI is set to stand-by state; Otherwise the outgoing interface of the professional VSI of stand-by state is set to the main state of using; Because 802.1ag normally realizes by hardware, thereby solve the interdepartmental system loop control problem of VPLS fast, satisfied professional requirement such as voice, video, VPN.
Further, this mode is only operated on some ASBR, and other ASBR is not had specific (special) requirements, and this ASBR supports that 802.1ag gets final product, and does not have inter-communicating problem, applied range.
The embodiment of the invention four solves the processing unit of VPLS loop, specifically can comprise: transparent transmission module 25 is used for receiving CCM through management PW, and transmits said CM; Said management PW is used to transmit said CCM.
Present embodiment has been realized quick solution VPLS loop problem through the said CCM of transparent transmission module forwards.
The treatment system of the embodiment of the invention one VPLS loop is applicable to dual-homed equipment; Said dual-homed equipment be specially home device belong to first by home device and second by home device; Said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message, said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message.
Shown in figure 12, the treatment system structural representation for embodiment of the invention VPLS loop specifically can comprise: comprise home device 30 and by home device 31; Said by home device comprise first by home device 311 and second by home device 312; Said home device 30 belong to first by home device 311 and second by home device 312, said home device 30 and said first is main to use state by the service channel between the home device 311, can transmit user's service message; Said home device 30 and said second is a stand-by state by the service channel between the home device 312; Can not transmit user's service message, wherein
By home device 31, be used for receiving said CCM, and transmit said CCM through management PW; Said CCM is arrived first by home device 311 through home device 30 and first by the management PW between the home device 311; Arrived second by home device 312 by home device 311 and second by the management PW between the home device 312 through first, got back to said home device 30 through second by the management PW between the home device 312 again.
Present embodiment sends CCM through home device 30; The service channel that is set to stand-by state in advance is provided with the main state of using, is received CCM by home device 31 through management PW, and transmit said CCM; Thereby solved the loop of VPLS fast, satisfied professional requirement such as voice, video, VPN.
Ethernet technology is owing to being simple and easy in local area network (LAN), metropolitan area network, wide area network scope, all to obtain large-scale application at present with, cheap, reason such as bandwidth improves constantly.But traditional ethernet is maintainable, manageability, the ability of can runing are all more weak, and is along with the expansion gradually of Ethernet range of application, also more and more stronger for the demand of Ethernet OAM function.The embodiment of the invention can utilize the Ethernet OAM fast detecting to the VPLS loop problem, has satisfied professional requirement such as voice, video, VPN.
What should explain at last is: above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although the present invention is specified with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and the scope of technical scheme of the present invention.
Claims (19)
1. the processing method of a virtual special local area network service loop; It is characterized in that; Said method is applicable to dual-homed equipment, said dual-homed equipment be specially home device belong to first by home device and second by home device, said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message; Said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message, and said method comprises:
When said home device, said first by home device and said second by home device on a loop time, said home device is sent detection of connectivity message;
Said detection of connectivity message through the transmission of management tseudo circuit after, when said home device was not received said detection of connectivity message in the given time, the service channel of stand-by state was set to the main state of using; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates.
2. the processing method of virtual special local area network service loop according to claim 1; It is characterized in that; Said service channel is specially professional tseudo circuit, and said home device is specially lower floor's service provider edge router, and said first is specially the first top service provider edge router by home device; Said second is specially the second top service provider edge router by home device, and said home device is sent detection of connectivity message and is specially:
When said lower floor service provider edge router, the said first top service provider edge router and the second top service provider edge router were on a loop, said lower floor service provider edge router was sent detection of connectivity message.
3. the processing method of virtual special local area network service loop according to claim 2 is characterized in that, the service channel of said stand-by state is set to the master and specifically comprises with state:
Said detection of connectivity message judges whether said lower floor service provider edge router receives said detection of connectivity message in the given time after transmitting through the management tseudo circuit;
If the professional tseudo circuit between said lower floor service provider edge router and the said second top service provider edge router is set to stand-by state; Otherwise the professional tseudo circuit of stand-by state is set to the main state of using.
4. the processing method of virtual special local area network service loop according to claim 1 and 2 is characterized in that, comprises before the said transmission detection of connectivity message:
On service provider edge router all on the loop, create the identical managing virtual exchange instance of identifier respectively; Said managing virtual exchange instance is used to said detection of connectivity message and realizes the ether bridging functionality;
According to said managing virtual exchange instance, between adjacent two service-provider edge routers on the loop, create said management tseudo circuit;
On the managing virtual exchange instance of said top service provider edge router, move 802.1ag, detect the virtual special local area network loop.
5. the processing method of virtual special local area network service loop according to claim 1 and 2; It is characterized in that said detection of connectivity message time-out time is greater than the link failure convergence time between said first top service provider edge router and the said second top service provider edge router.
6. the processing method of virtual special local area network service loop according to claim 1; It is characterized in that; Said service channel is specially the outgoing interface of professional virtual switch instance; Said home device is the first autonomous system edge router of first autonomous system; Said first is the 3rd autonomous system edge router of first autonomous system by home device, and said second is the second autonomous system edge router of second autonomous system by home device, and said home device is sent detection of connectivity message and is specially:
When the said first autonomous system edge router, said the 3rd autonomous system edge router and the said second autonomous system edge router were on a loop, the said first autonomous system edge router sent detection of connectivity message.
7. the processing method of virtual special local area network service loop according to claim 6 is characterized in that, the service channel of said stand-by state is set to the master and specifically comprises with state:
Said detection of connectivity message judges whether the said first autonomous system edge router receives said detection of connectivity message in the given time after transmitting through the management tseudo circuit; If the outgoing interface of the professional virtual switch instance between said first independent system boundary router and the 3rd independent system boundary router or the second autonomous system edge router is set to stand-by state; Otherwise the outgoing interface of the professional virtual switch instance of stand-by state is set to the main state of using.
8. according to the processing method of claim 1 or 6 described virtual special local area network service loops, it is characterized in that, comprise before the said transmission detection of connectivity message:
On independent system boundary routers all on the loop, create the identical managing virtual exchange instance of identifier; Said managing virtual exchange instance is used to said detection of connectivity message and realizes the ether bridging functionality;
According to said managing virtual exchange instance, between two adjacent on loop independent system boundary routers, create said management tseudo circuit;
On the managing virtual exchange instance of the said first autonomous system edge router, move 802.1ag, detect the interdepartmental system loop in the virtual special local area network service.
9. according to the processing method of claim 1 or 6 described virtual special local area network service loops; It is characterized in that the said detection of connectivity message detection time is greater than said first independent system boundary router in the same autonomous system and the link failure convergence time between said the 3rd independent system boundary router.
10. the processing method of a virtual special local area network service loop is characterized in that comprising:
Receive detection of connectivity message through the management tseudo circuit, and transmit said detection of connectivity message; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates, and is used to transmit said detection of connectivity message.
11. the processing unit of a virtual special local area network service loop; It is characterized in that; Said device is applicable to dual-homed equipment, said dual-homed equipment be specially home device belong to first by home device and second by home device, said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message; Said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message, and said device comprises:
Sending module, be used for when said home device, said first by home device and said second by home device on a loop time, said home device is sent detection of connectivity message;
The service channel state setting module; Be used for said detection of connectivity message through after managing the tseudo circuit transmission; When said home device is not received said detection of connectivity message in the given time; It is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop that the service channel of stand-by state is set to the main state, said management tseudo circuit used, and between adjacent two equipment on the said loop, creates.
12. the processing unit of virtual special local area network service loop according to claim 11; It is characterized in that; Said service channel is specially professional tseudo circuit, and said home device is lower floor's service provider edge router, and said first is the first top service provider edge router by home device; Said second is the second top service provider edge router by home device, and said sending module is specially:
First sending module; Be used for when said lower floor service provider edge router, the said first top service provider edge router and the said second top service provider edge router are on a loop, said lower floor service provider edge router is sent detection of connectivity message.
13. the processing unit according to claim 11 or 12 described virtual special local area network service loops is characterized in that, said service channel state setting module is specially:
The first service channel state setting module is used for said detection of connectivity message through after managing the tseudo circuit transmission, judges whether said lower floor service provider edge router receives said detection of connectivity message in the given time; If the professional tseudo circuit between the said lower floor service provider edge router and the first top service provider edge router is set to stand-by state; Otherwise the professional tseudo circuit of stand-by state is set to the main state of using.
14. the processing unit according to claim 11 or 12 described virtual special local area network service loops is characterized in that also comprising:
First managing virtual exchange instance is set up module, is used on service provider edge router all on the loop, creating respectively the identical said managing virtual exchange instance of identifier; Said managing virtual exchange instance is used to said detection of connectivity message and realizes the ether bridging functionality;
The first management tseudo circuit is set up module, is used between adjacent two service-provider edge routers on the loop, creating said management tseudo circuit according to said managing virtual exchange instance;
The first operation module is used on the managing virtual exchange instance of said lower floor service provider edge router, moving 802.1ag, detects the virtual special local area network loop.
15. the processing unit of virtual special local area network service loop according to claim 11; It is characterized in that; Said service channel is specially the outgoing interface of professional virtual switch instance; Said home device is specially the first autonomous system edge router of first autonomous system; Said first is specially the 3rd autonomous system edge router of first autonomous system by home device, and said second is specially the second autonomous system edge router of second autonomous system by home device, and said sending module is specially:
Second sending module is used for when the said first autonomous system edge router, the said second autonomous system edge router and said the 3rd autonomous system edge router are on loop, and the said first autonomous system edge router sends detection of connectivity message.
16. the processing unit according to claim 11 or 15 described virtual special local area network service loops is characterized in that, said service channel state setting module is specially:
The second service channel state setting module is used for said detection of connectivity message through after managing the tseudo circuit transmission, judges whether the said first autonomous system edge router receives said detection of connectivity message in the given time; If the outgoing interface of the professional virtual switch instance between the said first independent system boundary router and the second autonomous system edge router or the 3rd independent system boundary router is set to stand-by state; Otherwise the outgoing interface of the professional virtual switch instance of stand-by state is set to the main state of using.
17. the processing unit according to claim 11 or 15 described virtual special local area network service loops is characterized in that also comprising:
Second managing virtual exchange instance is set up module, is used on independent system boundary routers all on the loop, creating the identical managing virtual exchange instance of identifier; Said managing virtual exchange instance is used to said detection of connectivity message and realizes the ether bridging functionality;
The second management tseudo circuit is set up module, is used between two adjacent on loop independent system boundary routers, creating said management tseudo circuit according to said managing virtual exchange instance;
The second operation module is used on the managing virtual exchange instance of the said first autonomous system edge router, moving 802.ag, detects the interdepartmental system loop in the virtual special local area network service.
18. the processing unit of a virtual special local area network service loop is characterized in that comprising:
The transparent transmission module is used for receiving detection of connectivity message through the management tseudo circuit, and transmits said detection of connectivity message; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates, and is used to transmit said detection of connectivity message.
19. the treatment system of a virtual special local area network service loop; It is characterized in that comprising home device and by home device, said by home device comprise first by home device and second by home device, said home device belong to first by home device and second by home device; Said home device and said first is the main state of using by the service channel between the home device; Can transmit user's service message, said home device and said second is a stand-by state by the service channel between the home device, can not transmit user's service message; Wherein
Home device; Be used for when said home device, said first by home device and said second by home device on a loop time; Send detection of connectivity message, when not receiving said detection of connectivity message in the given time, the service channel of stand-by state is set to the main state of using;
By home device; Be used for receiving detection of connectivity message through the management tseudo circuit; And transmit said detection of connectivity message; Said management tseudo circuit is the managing virtual exchange instance identical according to the identifier of creating respectively on all devices on the said loop, between adjacent two equipment on the said loop, creates.
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| CN101924642B (en) * | 2009-06-15 | 2014-09-10 | 中兴通讯股份有限公司 | Method and device for protecting Ethernet with shared link |
| CN102232277B (en) * | 2010-04-16 | 2013-12-04 | 华为技术有限公司 | Method, system and corresponding device for implementing border gateway protocol - advertised discovery (BGP-AD) |
| CN102143004B (en) * | 2011-04-06 | 2013-10-09 | 北京华为数字技术有限公司 | Link protection method and network equipment |
| CN102868616B (en) * | 2012-09-21 | 2015-07-08 | 华为技术有限公司 | Method for establishing virtual MAC (Media Access Control) address table item in network as well as router and system |
| CN108111327B (en) * | 2016-11-25 | 2021-10-26 | 上海诺基亚贝尔股份有限公司 | Network operation management maintenance method and device |
| CN110768862B (en) * | 2019-09-23 | 2021-03-09 | 烽火通信科技股份有限公司 | Cloud platform physical link connectivity detection device, method and system |
| CN113630427B (en) * | 2020-05-07 | 2022-12-06 | 华为技术有限公司 | Protection switching method and device |
| CN115174438B (en) * | 2022-07-05 | 2023-09-22 | 杭州云合智网技术有限公司 | Method for identifying service connectivity of VPWS dual-activity dual-homing |
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