CN101621467B - Method, device and system for realizing multicast VSI - Google Patents
Method, device and system for realizing multicast VSI Download PDFInfo
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- CN101621467B CN101621467B CN2009100905027A CN200910090502A CN101621467B CN 101621467 B CN101621467 B CN 101621467B CN 2009100905027 A CN2009100905027 A CN 2009100905027A CN 200910090502 A CN200910090502 A CN 200910090502A CN 101621467 B CN101621467 B CN 101621467B
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Abstract
The invention relates to a method for realizing multicast VSI, comprising the following steps: receiving a multicast protocol message from a device of a non-first virtual service instance VSI; transmitting the multicast protocol message to the multicast source in the first VSI by searching preconfigured multicast bonding relationship information to transmit the multicast flow provided by the multicast source to the device of the non-first VSI. The embodiment of the invention also provides an devicedevice and a system for realizing multicast VSI. As the bonding relationship of VSI and other VSIs for transferring multicast flow, and/or multicast flow of non-VSI interfaces are configured, the multicast flow transferred in a VSI can be shared in different VSIs or non-VSIs, and network bandwidth is greatly saved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method, Apparatus and system of realizing multicast VSI.
Background technology
In VPLS (Virtual Private LAN Service, virtual proprietary lan services) network, PE (Provider Edge, operator's equipment) uses VSI (Virtual Service Instance, virtual service instance) to carry out VPLS and transmits.Through configuration IGMP Snooping (Internet GroupManagement Protocol Snooping, Internet Group Management Protocol is surveyed) function, the multicast VSI that can be implemented in the VPLS network transmits.
The inventor finds to exist at least in the prior art following problem in realizing process of the present invention:
Flux of multicast can't be transmitted between a plurality of VSI, can't realize that the flux of multicast between the VSI is shared, the bandwidth of therefore having wasted backbone network.
Summary of the invention
Embodiments of the invention provide a kind of method, Apparatus and system of realizing multicast VSI, thereby make that flux of multicast can be between different VSI, and transmit between the interface of VSI and non-VPLS.
The objective of the invention is to realize through following technical scheme:
A kind of method that realizes multicast VSI comprises:
Reception is from the multicast protocol message of the equipment of the non-first virtual service instance VSI;
Through searching pre-configured multicast binding relationship information, the multicast source in a said VSI sends said multicast protocol message, so that the flux of multicast that said multicast source is provided sends to the equipment of a said non-VSI.
A kind of device of realizing multicast VSI comprises:
The message receiver module is used to receive the multicast protocol message from the equipment of the non-first virtual service instance VSI;
Message processing module (MPM) is used for through searching pre-configured multicast binding relationship information, and the multicast source in a said VSI sends said multicast protocol message, so that the flux of multicast that said multicast source is provided sends to the equipment of a said non-VSI.
A kind of network equipment of realizing multicast VSI comprises above-mentioned device, and the type of the network equipment of said multicast virtual Service Instance VSI comprises:
Switch and/or router.
A kind of system that realizes multicast VSI comprises:
The flux of multicast request unit through the second virtual service instance VSI or non-virtual proprietary lan services VPLS interface access communications network, is used to send the multicast protocol message;
The message receiving and processing device is used to receive the multicast protocol message from said flux of multicast request unit; Through searching pre-configured multicast binding relationship information, the multicast source device in a VSI sends said multicast protocol message, so that the flux of multicast that said multicast source device is provided sends to said flux of multicast request unit.
Technical scheme by the embodiment of the invention described above provides can be found out; In the embodiment of the invention; Owing to disposed the binding relationship of flux of multicast of VSI and other VSI and/or the non-VSI interface of forwarding multicasting flow; Thereby make the multicast resource of in a VSI, propagating in different VSI, perhaps in non-VSI, to share, saved the network bandwidth greatly.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; The accompanying drawing of required use is done an introduction simply in will describing embodiment 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.
The schematic network structure that Fig. 1 provides for the embodiment of the invention;
The processing procedure sketch map that Fig. 2 provides for the embodiment of the invention one;
The processing procedure sketch map that Fig. 3 provides for the embodiment of the invention two;
The apparatus structure sketch map that Fig. 4 provides for the embodiment of the invention;
The system configuration sketch map that Fig. 5 provides for the embodiment of the invention.
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.
In the network that has disposed the multicast protocol function; Be shared in the flux of multicast of transmitting in certain VSI (being called a VSI in the embodiment of the invention) for the equipment that makes equipment or non-VPLS interface in other VSI; The embodiment of the invention provides a kind of method that realizes multicast VSI, and this method specifically comprises: receive the multicast protocol message from the equipment of a non-VSI; Through searching pre-configured multicast binding relationship information, the multicast source in a VSI sends this multicast protocol message, so that the flux of multicast that this multicast source is provided sends to the equipment of an above-mentioned non-VSI.Wherein, above-mentioned multicast protocol includes but are not limited to: for example IGMPSnooping, IGMP Proxy (Internet Group Management Protocol agency) and CGMP (Cisco's igmpinternet).Above-mentioned multicast protocol message includes but are not limited to: IGMP message, CGMP message.The equipment of an above-mentioned non-VSI can be meant the equipment through access communications networks such as the 2nd VSI or non-VPLS interfaces, and said communication network is meant by the common communication network that makes up of VPLS, VLAN or other networks.
In the embodiment of the invention, the multicast resource of in a VSI, propagating can perhaps be shared in non-VSI in different VSI, has saved the network bandwidth greatly.
The embodiment of the invention also is included in configuration multicast binding relationship information between a VSI and above-mentioned the 2nd VSI or the above-mentioned non-VPLS interface.The multicast binding relationship information can be configured to the form and the storage of form.
Among the invention described above embodiment; Above-mentioned through pre-configured multicast binding relationship information; Multicast source in a VSI transmits the multicast protocol message; So that sending to the equipment of a non-VSI, the flux of multicast that this multicast source is provided comprises: search the multicast binding relationship information, know flux of multicast, then in a VSI, send this multicast protocol message to multicast source from the multicast source in the VSI; And generate multicast forwarding information, and this multicast forwarding information is used for indicating the equipment that flux of multicast is sent to a said non-VSI, and concrete way of realization can be the multicast forwarding information table.
To carry out detailed explanation to the concrete implementation of the embodiment of the invention in actual application below.
Realize in the network of multicast in Application of I GMP agreement as shown in Figure 1; CE (Customer Edge, customer edge) 1, CE3 and CE5 are through VSI-A interface access network, and CE4 and CE6 are through the VSI-B access network; UPE (User Provider Edge; User operator equipment) 1 through VLAN (VirtualLocal Area Network, VLAN) interface access network, and UPE2 is through the generic interface access network.Wherein, VLAN interface and generic interface are non-VPLS interface.In order to make VSI-B, VLAN interface and generic interface etc. be shared in the flux of multicast of transmitting in the VSI-A; The multicast binding relationship of VSI-A and other VSI and/or non-VPLS interface can be disposed, specifically the configuration that configuration order is accomplished the multicast binding relationship can be on the network equipment of other VSI and/or non-VPLS interface, passed through.In the network shown in fig. 1, at the flux of multicast binding relationship between configuration and the VSI-A respectively on VSI-B, UPE1 and the UPE2, and non-limiting, the form of configuration order can be: multicast-vsi VSI-A as for example.In the embodiment of the invention, can preserve the flux of multicast binding relationship of configuration with the form of form.
Disposed after the multicast binding relationship, the equipment of the equipment in the VSI-B, the equipment of VLAN interface and generic interface just can have been shared the flux of multicast of forwarding in the VSI-A.To introduce the embodiment of the invention is shared flux of multicast through the multicast binding relationship implementation in detail through several concrete application implementation examples respectively below.
Embodiment one
Use IGMP Snooping function to realize multicast VSI in the network shown in Figure 1; If VSI-B needs the flux of multicast in receiving group source; Because multicast source is through VSI-A interface access network, then the processing procedure of the embodiment of the invention one is as shown in Figure 2, and concrete implementation is following:
The network equipment among S201, the VSI-B (for example PE2 or PE3) is received the IGMP message that the main frame under it is sent, and knows the incoming interface information of this IGMP message;
If it is VSI-B that the network equipment among this VSI-B of S202 is known the incoming interface of IGMP message, then search pre-configured flux of multicast binding relationship table, know the VSI-A information of binding with VSI-B, above-mentioned IGMP message is sent to multicast source in VSI-A;
The network equipment among S203, the above-mentioned VSI-B generates the multicast forwarding information table; This multicast forwarding information table is used to indicate the forwarding of flux of multicast; Arrive the network equipment of VSI-B with convenient flux of multicast after, according to this multicast forwarding information table flux of multicast is distributed to the main frame that it sends the IGMP message down, this multicast forwarding information table comprises S.G (Source.Group; Source group information) outgoing interface information of information and correspondence or the like, this corresponding outgoing interface information is the outgoing interface of VSI-B;
After S204, multicast source receive the IGMP message, through CE1 and PE1 the PW (Pseudo Wire, pseudo-line) of flux of multicast between PE1 and PE3 is transmitted to PE3, the PW between PE1 and PE4 is transmitted to PE4;
S205, PE3 and PE4 generate the multicast forwarding information table, and according to this multicast forwarding information table flux of multicast are transmitted, thereby above-mentioned flux of multicast is distributed to the equipment that needs the receiving group flow among the VSI-B.
In the above-mentioned processing procedure, the sequencing on the life period not between S202 and the S203.
Through above-mentioned processing procedure, can realize that the VSI that strides of flux of multicast duplicates, the receiving terminal of a plurality of VSI can use same VSI on core net, to transmit flow, thereby has saved the network bandwidth greatly.
Embodiment two
Use IGMP Snooping function to realize multicast VSI in the network shown in Figure 1; If need the flux of multicast in receiving group source through the subscriber equipment under the UPE1 of VLAN interface access network; Because multicast source is through VSI-A interface access network; Then the processing procedure of the embodiment of the invention two is as shown in Figure 3, and concrete implementation is following:
S301, network equipment UPE1 receive the IGMP message that the main frame under it is sent, and know the incoming interface information of this IGMP message;
If it is VLAN interface that S302 UPE1 is known the incoming interface of said IGMP message, then search pre-configured flux of multicast binding relationship table, know the VSI-A information of binding with VLAN interface, above-mentioned IGMP message is sent to multicast source in VSI-A;
S303, above-mentioned UPE1 generate the multicast forwarding information table; This multicast forwarding information table is used to indicate the forwarding of flux of multicast; Behind convenient flux of multicast arrival UPE1; According to this multicast forwarding information table flux of multicast is distributed to the main frame that it sends the IGMP message down, this multicast forwarding information table comprises outgoing interface information of S.G information and correspondence or the like, and this corresponding outgoing interface information is the outgoing interface of VLAN;
After S304, multicast source receive the IGMP message, the PW of flux of multicast between PE1 and PE3 is transmitted to PE3 through CE1 and PE1;
S305, PE3 generate the multicast forwarding information table, and according to this multicast forwarding information table flux of multicast are transmitted to UPE1, said flux of multicast are distributed to the subscriber equipment that needs the receiving group flow by UPE1.
In the above-mentioned processing procedure, the sequencing on the life period not between S302 and the S303.In addition, for the equipment through other non-VPLS interface (for example generic interface) access networks, receiving group flow if desired, its processing procedure can be with reference to above-mentioned processing procedure.
In the embodiment of the invention two, on core net, only dispose a VSI, other need the equipment of the non-VPLS interface of receiving group flow can realize sharing of flux of multicast through using pre-configured multicast binding relationship table, have saved the network bandwidth greatly.In addition, in the embodiment of the invention,, do not influence the realization of non-other functions of VPLS interface equipment though disposed the multicast binding relationship between non-VPLS interface and the VSI.For example, in vlan network, communication services such as unicast service are still carried out according to original mode.
The method that the invention described above embodiment provides specifically can be applied in ME (Metro Ethernet, the Metro Ethernet) network, for disposing IPTV multicast services such as (Internet Protocol Television, Web TVs) deployment scheme flexibly is provided.
When in network, having disposed IGMP Proxy function; When perhaps having disposed the CGMP function; The processing procedure of processing procedure and the foregoing description is similar; Its essence all is configuration multicast binding relationships between a VSI and the 2nd VSI and/or non-VPLS interface, according to said multicast binding relationship the flux of multicast in the one VSI is copied in the interface equipment of a non-VSI, repeats no more here.
The all or part of step of realization said method embodiment can be accomplished through the relevant hardware of program command, and aforesaid program can be stored in the computer read/write memory medium, and this program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The embodiment of the invention also provides a kind of device of realizing multicast VSI, and the multicast binding relationship between a pre-configured VSI on this device and the 2nd VSI and/or non-VPLS interface, and this apparatus structure is as shown in Figure 4, and specifically implementation structure comprises:
Message receiver module 401 is used to receive the multicast protocol message from the equipment of a non-VSI, and the equipment of this non-VSI can be through interface of the 2nd VSI or non-VPLS or the like access communications network;
Message processing module (MPM) 402 is used for through pre-configured multicast binding relationship information, and multicast source in a VSI sends this multicast protocol message, so that the flux of multicast that above-mentioned multicast source is provided sends to the equipment of an above-mentioned non-VSI.Wherein, above-mentioned multicast protocol message is used for the flux of multicast that multicast source in acquisition request the one VSI provides, and non-limiting, above-mentioned multicast protocol message includes but are not limited to: IGMP message and CGMP message as for example.
The device of the realization multicast VSI that the invention described above embodiment provides also comprises configuration module 403, is used for configuration multicast binding relationship information between an above-mentioned VSI and above-mentioned the 2nd VSI or above-mentioned other non-VPLS interfaces.The multicast binding relationship information can be configured to the form and the storage of form.
In the device of the realization multicast VSI that the invention described above embodiment provides, above-mentioned message processing module (MPM) 402 comprises:
Search submodule 4021, be used to search said multicast binding relationship information;
Message sends submodule 4022, is used for the multicast binding relationship information that finds according to above-mentioned inquiry submodule 4021, knows that flux of multicast from after the multicast source in the VSI, sends above-mentioned multicast protocol message to above-mentioned multicast source in a VSI;
Information generates submodule 4023, is used to generate multicast forwarding information, and said multicast forwarding information is used for indicating the equipment that flux of multicast is sent to a said non-VSI, and concrete way of realization can be the multicast forwarding information table.
In the device that the invention described above embodiment provides; Through searching the multicast binding relationship; The request of flux of multicast is transmitted to multicast source in the VSI of core net deploy, and flux of multicast is forwarded to edge device, and then distribute to the network equipment of non-VSI through said VSI.Can only on core net, pass through a VSI forwarding multicasting flow, save the network bandwidth greatly.
The embodiment of the invention also provides a kind of network equipment of realizing multicast VSI, and this network equipment comprises the device of the realization multicast VSI that the invention described above embodiment provides, and its type can comprise: switch and/or router or the like.
The embodiment of the invention also provides a kind of system that realizes multicast VSI, and its structure is as shown in Figure 5, and concrete implementation structure can comprise:
Flux of multicast request unit 51; Be used to send the multicast protocol message; This flux of multicast request unit is not the device among the VSI, and it is through the 2nd VSI or non-VPLS interface access communications network, and above-mentioned multicast protocol message includes but are not limited to: IGMP message, CGMP message;
Message receiving and processing device 52 is used to receive the multicast protocol message from flux of multicast request unit 51; Through searching pre-configured multicast binding relationship information, the multicast source device in a VSI sends above-mentioned multicast protocol message, so that the flux of multicast that above-mentioned multicast source device is provided sends to flux of multicast request unit 51.
In the system that the invention described above embodiment provides, message receiving and processing device 52 can also be used for configuration multicast binding relationship information between a VSI and the 2nd VSI or non-VPLS interface.
The system that the invention described above embodiment provides can also comprise multicast source device 53; Above-mentioned message receiving and processing device 52 concrete messages are searched module 521, message sending module 522 and information generating module 523; Wherein, Message is searched module 521 and is used for after receiving the multicast protocol message, searches pre-configured multicast binding relationship information; Message sending module 522 is used for searching the multicast binding relationship information that module 521 finds according to message; Know above-mentioned flux of multicast from after the multicast source device in the VSI, in a VSI, send above-mentioned multicast protocol message to above-mentioned multicast source device 53; Information generating module 523 is used to generate multicast forwarding information, and this multicast forwarding information is used for indicating flux of multicast is sent to said flux of multicast request unit, and concrete way of realization can be the multicast forwarding information table.
In the system that the invention described above embodiment provides, said flux of multicast request unit 51 specifically can be through the user-end provider edge of VLAN interface access network or the subscriber equipment under it, also can be through the CE of the 2nd VSI access network or the subscriber equipment under the CE; Said message receiving and processing device 52 specifically can be PE; Said flux of multicast retransmission unit 54 specifically can be the PE that is connected with flux of multicast request unit 51.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technical staff who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (7)
1. a method that realizes multicast VSI is characterized in that, comprising:
Reception is from the multicast protocol message of the equipment of the non-first virtual service instance VSI;
Through searching pre-configured multicast binding relationship information, the multicast source in a said VSI sends said multicast protocol message, so that the flux of multicast that said multicast source is provided sends to the equipment of a said non-VSI;
The equipment of a said non-VSI is through the 2nd VSI or non-virtual proprietary lan services VPLS interface access communications network, and said method also comprises: configuration multicast binding relationship information between a said VSI and said the 2nd VSI or said non-VPLS interface.
2. method according to claim 1; It is characterized in that; Said through pre-configured multicast binding relationship information, the multicast source in a said VSI sends said multicast protocol message, comprises so that the flux of multicast that said multicast source is provided sends to the equipment of a said non-VSI:
Search said multicast binding relationship information, know said flux of multicast, then in a VSI, send said multicast protocol message to said multicast source from the multicast source in the VSI;
Generate multicast forwarding information, said multicast forwarding information is used for indicating the equipment that said flux of multicast is sent to a said non-VSI.
3. a device of realizing multicast VSI is characterized in that, comprising:
The message receiver module is used to receive the multicast protocol message from the equipment of the non-first virtual service instance VSI;
Message processing module (MPM) is used for through searching pre-configured multicast binding relationship information, and the multicast source in a said VSI sends said multicast protocol message, so that the flux of multicast that said multicast source is provided sends to the equipment of a said non-VSI;
The equipment of a said non-VSI is through the 2nd VSI or non-virtual proprietary lan services VPLS interface access communications network; Said device also comprises configuration module, is used for configuration multicast binding relationship information between a said VSI and said the 2nd VSI or said non-VPLS interface.
4. device according to claim 3 is characterized in that, said message processing module (MPM) comprises:
Search submodule, be used to search said multicast binding relationship information;
Message sends submodule, is used for the said multicast binding relationship information that finds according to said inquiry submodule, knows that said flux of multicast from after the multicast source in the VSI, sends said multicast protocol message to said multicast source in a VSI;
Information generates submodule, is used to generate multicast forwarding information, and said multicast forwarding information is used for indicating the equipment that flux of multicast is sent to a said non-VSI.
5. a network equipment of realizing multicast VSI is characterized in that, comprises claim 3 or 4 described devices, and the type of the network equipment of said multicast virtual Service Instance VSI comprises:
Switch and/or router.
6. a system that realizes multicast VSI is characterized in that, comprising:
The flux of multicast request unit through the second virtual service instance VSI or non-virtual proprietary lan services VPLS interface access communications network, is used to send the multicast protocol message;
The message receiving and processing device is used to receive the multicast protocol message from said flux of multicast request unit; Through searching pre-configured multicast binding relationship information; Multicast source device in a VSI sends said multicast protocol message; So that the flux of multicast that said multicast source device is provided sends to said flux of multicast request unit, also be used for configuration multicast binding relationship information between a said VSI and said the 2nd VSI or said non-VPLS interface.
7. system according to claim 6 is characterized in that, said message receiving and processing device comprises:
Message is searched module, is used for after receiving the multicast protocol message, searches said pre-configured multicast binding relationship information;
The message sending module is used for searching the multicast binding relationship information that module searches arrives according to said message, knows that said flux of multicast from after the multicast source device in the VSI, sends said multicast protocol message to said multicast source device in a VSI;
Information generating module is used to generate multicast forwarding information, and said multicast forwarding information is used for indicating flux of multicast is sent to said flux of multicast request unit.
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| CN2009100905027A CN101621467B (en) | 2009-08-13 | 2009-08-13 | Method, device and system for realizing multicast VSI |
| PCT/CN2010/075966 WO2011018049A1 (en) | 2009-08-13 | 2010-08-13 | Method, apparatus and system for implementing multicast virtual service instance |
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| CN2009100905027A CN101621467B (en) | 2009-08-13 | 2009-08-13 | Method, device and system for realizing multicast VSI |
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| CN101621467B (en) * | 2009-08-13 | 2012-05-30 | 华为技术有限公司 | Method, device and system for realizing multicast VSI |
| CN102075439B (en) * | 2011-02-22 | 2013-09-11 | 杭州华三通信技术有限公司 | Multicast message transmitting method and routing equipment |
| CN102215172B (en) * | 2011-06-21 | 2017-08-11 | 中兴通讯股份有限公司 | A kind of method and system for realizing cross-virtual private local area network multicast |
| CN103634210B (en) * | 2012-08-28 | 2016-10-19 | 杭州华三通信技术有限公司 | Find the method and apparatus of the opposite end PE equipment of VPLS example |
| CN103179043B (en) * | 2013-03-06 | 2016-07-06 | 杭州华三通信技术有限公司 | A kind of method for forwarding multicast message and equipment |
| CN104468371B (en) * | 2014-11-28 | 2018-03-16 | 新华三技术有限公司 | multicast service message processing method and device |
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| CN1863147A (en) * | 2005-09-07 | 2006-11-15 | 华为技术有限公司 | Method for implementing multicast data stream retransmission in virtual special LAN service |
| CN101442564A (en) * | 2008-12-25 | 2009-05-27 | 杭州华三通信技术有限公司 | Method for forwarding multicast data and NAT equipment |
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| CN100531040C (en) * | 2007-02-07 | 2009-08-19 | 杭州华三通信技术有限公司 | Method and apparatus for realizing multicasting virtual private network binding |
| US7751399B2 (en) * | 2007-08-06 | 2010-07-06 | Cisco Technology, Inc. | Scalable virtual private local area network service |
| CN100583801C (en) * | 2007-11-30 | 2010-01-20 | 华为技术有限公司 | A method, system and switching device for dynamically establishing multicast virtual LAN |
| CN101621467B (en) * | 2009-08-13 | 2012-05-30 | 华为技术有限公司 | Method, device and system for realizing multicast VSI |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1863147A (en) * | 2005-09-07 | 2006-11-15 | 华为技术有限公司 | Method for implementing multicast data stream retransmission in virtual special LAN service |
| CN101442564A (en) * | 2008-12-25 | 2009-05-27 | 杭州华三通信技术有限公司 | Method for forwarding multicast data and NAT equipment |
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| WO2011018049A1 (en) | 2011-02-17 |
| CN101621467A (en) | 2010-01-06 |
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