CN108632147A

CN108632147A - Message multicast processing method and device

Info

Publication number: CN108632147A
Application number: CN201810252969.6A
Authority: CN
Inventors: 郝卫国; 夏寅贲; 王闯; 杨涛; 杨坚
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-06-29
Filing date: 2013-06-29
Publication date: 2018-10-09
Anticipated expiration: 2033-06-29
Also published as: CN108632147B; CN104253698B; CN104253698A

Abstract

The embodiment of the invention provides a method and equipment for processing message multicast, wherein the method comprises the following steps: receiving a multicast message sent by a source edge network element, wherein the multicast message comprises multicast information and an original message in a virtual subnet; determining at least one destination edge network element according to the multicast information; and sending the original message to at least one destination edge network element in a multicast replication mode so that each destination edge network element multicasts the original message to the first terminal corresponding to the virtual subnet. The message multicast processing method and the message multicast processing equipment forward the multicast message sent by the source edge network element through the centralized replication point and send the multicast message to the destination edge network element according to the multicast information, thereby realizing the multicast of the message, reducing the network burden of the edge network element, improving the message multicast efficiency and being beneficial to improving the communication performance of the network.

Description

The processing method and equipment of message multicast

Technical field

The present embodiments relate to field of communication technology more particularly to a kind of processing methods and equipment of message multicast.

Background technology

Large-scale data center network usually requires that support multi-tenant, and flow is isolated between each tenant so that a rent The flow at family will not be seen by another tenant.In order to realize this flow isolation based on tenant, a kind of current emerging side Method is using the network virtualization technology based on stacking network (overlay).Common, VXLAN (Virtual eXtensible LANs, virtual extended LAN), NVGRE (Network Virtualization Generic Routing Encapsulation, network virtual generic route encapsulation) it is two kinds of typical technologies for realizing this kind of stacking network, in VXLAN VNID (Virtual Network Identifier) can indicate virtual process identifications number, and the VSID in NVGRE technologies (Virtual Wall Security Identification) can represent virtual process identifications number；By taking VXLAN as an example, wherein The virtual subnet of tenant is isolated using corresponding virtual process identifications VNID for flow.Each end in virtual subnet End, such as TES (Tenant End System, tenant's terminal system), with edge network (Network Virtualization Edge, NVE) it is connected, when terminal needs the other-end multicast message into the same virtual subnet, need through edge net Member carries out duplication forwarding；For example, terminal 1 is connected with edge network 1, the terminal 2 in the same virtual subnet and edge net Member 2 is connected, terminal 3 is connected with edge network 3, then for terminal 1 when to 3 multicast message of terminal 2 and terminal, edge network 1 will be wide It reports text and copies as two parts, and will replicate after two parts of obtained broadcasting packets encapsulate single tunnel outer layer respectively and be sent to edge net Member 2 and edge network 3, wherein single tunnel outer layer destination IP (Internet Protocol, Internet protocol) address is The IP address of each purpose edge network, that is, the IP address of the tunnel outer layer of the two parts of broadcasting packets replicated is respectively edge The IP address of the IP address and edge network 3 of network element 2, in addition, the virtual process identifications number of tunnel outer layer correspond to terminal 1, end Virtual subnet belonging to end 2 and terminal 3；The message that subsequent edge network 2 and edge network 3 receive encapsulation tunnel outer layer is laggard Row decapsulation, obtains original broadcasting packet, and the broadcasting packet is sent to respective local according to virtual process identifications number Broadcasting packet is sent to terminal 2 by terminal, i.e. edge network 2, and broadcasting packet is sent to terminal 3 by edge network 3, completes terminal 13 multicast message of terminal 2 and terminal into the same virtual subnet.Hair of the edge network for other messages in virtual subnet Send mode and similar.

With the continuous expansion of network size, network deployment also becomes increasingly complex, when using above method progress virtual subnet Message group sowing time in net needs source edge network (such as above-mentioned edge network 1) to replicate a large amount of message, also needs respectively to replicating Each message encapsulation single tunnel outer layer (such as tunnels unicast overlay outer layer) obtained, therefore the network of edge network is negative It carries on a shoulder pole overweight, influences the multicast efficiency of message, be unfavorable for promoting the communication performance of network.

Invention content

The embodiment of the present invention provides a kind for the treatment of method and apparatus of message multicast and is carried for optimizing message multicast procedures Rise network communication performance.

In a first aspect, the embodiment of the present invention provides a kind of processing method of message multicast, including：

The multicast message that reception source edge network is sent, the multicast message includes the original in multicast information and virtual subnet Beginning message；

At least one purpose edge network is determined according to the multicast information；

The original message is sent at least one purpose edge network by multicast replication mode, so that each purpose edge Original message described in first terminal multicast of the network element to the correspondence virtual subnet.

With reference to first aspect, in the first embodiment, described that at least one purpose side is determined according to the multicast information Hoddy member, including：

Learn the multicast information that the first single tunnel outer layer of the multicast message carries, and obtains original message；Wherein, The multicast information is virtual process identifications number；

Local multicast forwarding table is searched according to the virtual process identifications number, determines the net of at least one purpose edge network Network interconnection agreement IP address.

First embodiment with reference to first aspect, it is in this second embodiment, described that the original message is passed through into multicast Copy mode sends at least one purpose edge network, including：

It replicates the original message and obtains at least one original message identical with the purpose edge network number；

According to the IP address of each purpose edge network, by each original message by encapsulating purpose single tunnel outer layer, It is respectively sent to each purpose edge network.

With reference to first aspect, in the third embodiment, described that at least one purpose side is determined according to the multicast information Hoddy member, including：

The original message for encapsulating Multicast Tunnel outer layer is obtained according to the multicast message；

Learn the multicast information carried on the Multicast Tunnel outer layer, wherein the multicast information is multicast group IP address；

Local multicast forwarding table is searched according to the multicast group IP address, with determining the IP of at least one purpose edge network Location.

The original message is passed through multicast replication by third embodiment with reference to first aspect in the fourth embodiment Mode sends at least one purpose edge network, including：

The original message for encapsulating Multicast Tunnel outer layer is replicated, is obtained identical at least with the purpose edge network number One original message for encapsulating Multicast Tunnel outer layer；

According to the IP address of each purpose edge network, the original message that each is encapsulated to Multicast Tunnel outer layer passes through envelope Purpose single tunnel outer layer is filled, each purpose edge network is respectively sent to.

With reference to first aspect second or the 4th embodiment, in the 5th embodiment, by the original message or encapsulation The original message of Multicast Tunnel outer layer forwards single tunnel outer layer by encapsulation, is sent to upper layer and concentrates copy-point, so that on Layer concentrates copy-point by the original message or encapsulates the original message of Multicast Tunnel outer layer and be sent to described at least one the One concentrates copy-point.

With reference to first aspect to any embodiment in the 5th embodiment of first aspect, in sixth embodiment, Before receiving the multicast message that source edge network is sent, the processing method further includes：

The management information that centralized management equipment issues is received, the management information includes following at least two information：

Virtual subnet information, edge network IP address information, multicast group IP address information and concentration copy-point IP address letter Breath；Any one of management information information and in addition to this information at least one of there are incidence relations between information；

Local multicast forwarding table is generated according to the management information；Alternatively,

By concentrating the signaling protocol between copy-point and at least one edge network, advertised information to receive each edge network Advertised information；The advertised information includes the IP address of each edge network, the virtual subnet information of edge network management and each The corresponding multicast information of the virtual subnet；

According to advertised information according to the advertised information, local multicast forwarding table is generated.

Second aspect, the embodiment of the present invention provide a kind of processing method of message multicast, including：

Receive the original message that second terminal is sent in virtual subnet；

According to the original message to concentrating copy-point to send multicast message, by the concentration copy-point, to make at least Original message described in first terminal multicast of one purpose edge network to the correspondence virtual subnet；Wherein, described group of report Text includes multicast information and the original message, and the multicast information is determined according to management information.

In conjunction with second aspect, in the first embodiment, it is described according to the original message to concentrate copy-point transmission group Text is reported, including：

The original message is encapsulated into the first single tunnel outer layer, obtains the multicast message, first single tunnel Outer layer carries the virtual process identifications number as multicast information, wherein the corresponding virtual subnet of the virtual process identifications number；

The multicast message is sent to the concentration copy-point.

In conjunction with second aspect, in this second embodiment, it is described according to the original message to concentrate copy-point transmission group Text is reported, including：

The original message is encapsulated into Multicast Tunnel outer layer, the Multicast Tunnel outer layer carries the multicast as multicast information Group IP address；

Original message to encapsulating Multicast Tunnel outer layer encapsulates the second single tunnel outer layer, obtains the multicast message；

The multicast message is sent to concentration copy-point.

In conjunction with any embodiment in second aspect to second aspect second embodiment, in the third embodiment, Before receiving the original message that local terminal is sent, the processing method further includes：

Virtual subnet information, multicast group IP address information and concentration copy-point IP address information；In the management information Any one information and in addition to this information at least one of there are incidence relations between information；

By concentrating the signaling protocol between copy-point, advertised information is sent to copy-point is concentrated；The advertised information The virtual subnet information of IP address, edge network management including edge network and the corresponding multicast letter of each virtual subnet Breath；

According to the advertised information, corresponding local multicast forwarding table is generated towards copy-point is concentrated.

The third aspect, the embodiment of the present invention provide a kind of concentration copy-point, including：

Receiving module, the multicast message sent for receiving source edge network, the multicast message include multicast information and Original message in virtual subnet；

Determining module, for determining at least one purpose edge network according to the multicast information；

Sending module, for the original message to be sent at least one purpose edge net by multicast replication mode Member, so that original message described in first terminal multicast of each purpose edge network to the correspondence virtual subnet.

In conjunction with the third aspect, in the first embodiment, the determining module is specifically used for learning the multicast message The multicast information that first single tunnel outer layer carries, and obtain original message；Wherein, the multicast information is virtual process identifications Number；

In conjunction with third aspect first embodiment, in this second embodiment, the sending module specifically includes：

Copied cells, it is identical at least one with the purpose edge network number for replicating the original message acquisition Original message；

Transmission unit, for the IP address according to each purpose edge network, by each original message by encapsulating purpose Single tunnel outer layer is respectively sent to each purpose edge network.

In conjunction with the third aspect, in the third embodiment, determining module, which is specifically used for being obtained according to the multicast message, seals The original message of Multicast Tunnel outer layer is filled；

In conjunction with third aspect third embodiment, in the fourth embodiment, the copied cells are additionally operable to replicate encapsulation The original message of Multicast Tunnel outer layer obtains and with the purpose edge network number identical at least one encapsulates multicast tunnel The original message of road outer layer；

The transmission unit is additionally operable to, according to the IP address of each purpose edge network, each be encapsulated outside Multicast Tunnel The original message of layer is respectively sent to each purpose edge network by encapsulating purpose single tunnel outer layer.

In conjunction with the third aspect second or the 4th embodiment, in the 5th embodiment, the determining module is according to Multicast information further defines at least one first IP address for concentrating copy-point,

Then sending module is additionally operable to the original message or encapsulates the original message of Multicast Tunnel outer layer and pass through encapsulation Single tunnel outer layer is forwarded, upper layer is sent to and concentrates copy-point, so that upper layer concentrates copy-point by the original message or encapsulation The original message of Multicast Tunnel outer layer is sent to described at least one first and concentrates copy-point.

In conjunction with any embodiment in the third aspect to the 5th embodiment of the third aspect, in sixth embodiment,

The receiving module is additionally operable to receive the management information that centralized management equipment issues, and the management information includes following At least two information：

Then the concentration copy-point further includes：

Generation module, for generating local multicast forwarding table according to the management information；Alternatively,

The receiving module is used to, by concentrating the signaling protocol between copy-point and at least one edge network, receive each The advertised information of edge network；The advertised information include the IP address of each edge network, edge network management virtual subnet Information and the corresponding multicast information of each virtual subnet；

The generation module is additionally operable to, according to the advertised information, generate local multicast forwarding table.

Fourth aspect, the embodiment of the present invention provide a kind of edge network, including：

Receiving module, for receiving the original message that second terminal is sent in virtual subnet；

Sending module, for sending multicast message to concentration copy-point according to the original message, to pass through the concentration Copy-point makes original message described in first terminal multicast of at least one purpose edge network to the correspondence virtual subnet；Its In, the multicast message includes multicast information and the original message, and the multicast information is determined according to management information.

In conjunction with fourth aspect, in the first embodiment, the sending module specifically includes：

Encapsulation unit, it is described for by the original message the first single tunnel outer layer of encapsulation, obtaining the multicast message First single tunnel outer layer carries the virtual process identifications number as multicast information, wherein the virtual process identifications correspondence The virtual subnet.

Transmission unit, for sending the multicast message to the concentration copy-point.

In conjunction with fourth aspect, in this second embodiment, the encapsulation unit is additionally operable to the original message encapsulation group Tunnel outer layer is broadcast, the Multicast Tunnel outer layer carries the multicast group IP address as multicast information；

The transmission unit is additionally operable to the multicast message being sent to concentration copy-point.

In conjunction with any embodiment in fourth aspect to fourth aspect second embodiment, in the third embodiment, The receiving module includes following at least two letters for receiving the management information that centralized management equipment issues, the management information Breath：

Then the edge network further includes generation module, and the generation module generates local multicast according to the management information Forwarding table；Alternatively,

The sending module is used for by concentrating the signaling protocol between copy-point, and notice letter is sent to copy-point is concentrated Breath；The advertised information includes the IP address of edge network, the virtual subnet information of edge network management and each virtual subnet Net corresponding multicast information；

The generation module generates corresponding local multicast forwarding table according to the advertised information, towards copy-point is concentrated.

The processing method and equipment of message multicast provided in an embodiment of the present invention concentrate copy-point by introducing, make concentration The multicast message that copy-point sends source edge network is forwarded processing, and multicast message is sent to mesh according to multicast information Edge network, realize the multicast of message, reduce the network burden of edge network, improve the efficiency of message multicast, be conducive to Promote the communication performance of network.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the flow chart of the processing method embodiment one of message multicast of the present invention；

Fig. 2 is the flow chart of the processing method embodiment two of message multicast of the present invention；

Fig. 3 is the signaling diagram of the processing method embodiment three of message multicast of the present invention；

Fig. 4 is the network architecture schematic diagram in the embodiment of the present invention three；

Fig. 5 is the signaling diagram of the processing method example IV of message multicast of the present invention；

Fig. 6 is the first network architecture schematic diagram in the embodiment of the present invention four；

Fig. 7 is second of network architecture schematic diagram in the embodiment of the present invention four；

Fig. 8 is third network architecture schematic diagram in the embodiment of the present invention four；

Fig. 9 is a kind of structure chart for concentrating copy-point embodiment one of the present invention；

Figure 10 is a kind of structure chart for concentrating copy-point embodiment two of the present invention；

Figure 11 is a kind of structure chart of edge network embodiment one of the invention；

Figure 12 is a kind of structure chart of edge network embodiment two of the invention；

Figure 13 is a kind of structure chart for concentrating copy-point embodiment three of the present invention；

Figure 14 is a kind of structure chart of edge network embodiment three of the invention.

Specific implementation mode

In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.

Fig. 1 is the flow chart of the processing method embodiment one of message multicast of the present invention.The method of the present embodiment can be by collecting Middle copy-point executes, which is a kind of centralization overlay multicast replication equipment.As shown in Figure 1, this method packet It includes：

S101, the multicast message that source edge network is sent is received.

By by edge when above-mentioned multicast message includes the original message, wherein original message in multicast information and virtual subnet The terminal of NE management is sent to the edge network, which can be TES；For example, when terminal 1 is needed to same virtual Other-end in subnet, such as terminal 10,11 multicast message of terminal, then terminal 1 need the edge network by management terminal 1 Forwarding multicasting message, wherein the edge network of management terminal 1 is source edge network at this time, it is corresponding, above-mentioned other-end is managed, Such as edge network of terminal 10, terminal 11 is purpose edge network relative to above-mentioned source edge network.Further, source edge When network element forwarding multicasting message, also need to send by concentrating copy-point.Wherein, concentrating the multicast message that receives of copy-point is Original message in virtual subnet has carried out tunnel encapsulation acquisition according to tunnel protocol；In the present embodiment for purposes of illustration only, It is known as the tunnel encapsulation that original message carries out to encapsulate tunnel outer layer, to obtain multicast message, and multicast information is carried On tunnel outer layer.

S102, at least one purpose edge network is determined according to multicast information.

It concentrates copy-point when the tunnel outer layer to multicast message decapsulates, may learn the virtual of tunnel outer layer carrying Mobile network identification number obtains multicast information according to the virtual process identifications number, which includes at least one purpose edge net The IP address of member；Alternatively, concentrating copy-point after the tunnel outer layer decapsulation to multicast message, multicast group IP address, root are obtained The multicast information for the IP address for including at least one purpose edge network is obtained according to the multicast group IP address.

S103, original message is sent at least one purpose edge network by multicast replication mode.

It, will be original using multicast replication mode after the IP address of at least one purpose edge network obtained in S102 Message is sent to each purpose edge network, so that first terminal multicast original report of each purpose edge network to corresponding virtual subnet Text, wherein first terminal be purpose edge network local terminal, and multicast replication mode include to by original message towards extremely The IP address of a few purpose edge network replicated, encapsulation etc. again.

In the present embodiment, copy-point, the multicast message for making concentration copy-point send source edge network are concentrated by introducing It is forwarded processing, and multicast message is sent to by purpose edge network according to multicast information, the multicast of message is realized, reduces The network burden of edge network improves the efficiency of message multicast, is conducive to promote the communication performance of network.

Fig. 2 is the flow chart of the processing method embodiment two of message multicast of the present invention.The method of the present embodiment can be by side Hoddy member executes.As shown in Fig. 2, this method includes：

S201, the original message that second terminal is sent in virtual subnet is received.

Edge network can manage multiple local terminals, and each local terminal can belong to different virtual subnets, same virtual Original message group can be cast to by being used as the edge network of manager and be managed by other edge networks by a terminal in subnet Terminal, and receive the edge network for the original message sent by terminal, the processing side of message multicast in the present embodiment It is as source edge network in method, then above-mentioned second terminal indicates the local terminal of source edge network management, and local terminal is sent out The original message of edge network is given, which includes the unknown unicast message in virtual subnet, broadcasting packet or multicast Message.

S202, multicast message is sent to concentration copy-point according to original message.

Due to being needed original message by concentrating copy-point to carry out multicast, to pass through as the source edge network of sender The concentration copy-point makes at least one purpose edge network to the first terminal multicast original message of corresponding virtual subnet；Its In, multicast message includes multicast information and original message；Specifically original message can be encapsulated the first single tunnel outer layer, obtained Multicast message, the first single tunnel outer layer carry the virtual process identifications number as multicast information, wherein the virtual network Identification number corresponds to the virtual subnet, and the multicast message is sent then to the concentration copy-point；Alternatively,

Original message is encapsulated into Multicast Tunnel outer layer, the Multicast Tunnel outer layer carries the multicast group IP as multicast information Address；

Original message to encapsulating Multicast Tunnel outer layer encapsulates the second single tunnel outer layer, obtains multicast message；Then Multicast message is sent to concentration copy-point.

By concentrating copy-point, keep first terminal multicast of at least one purpose edge network into corresponding virtual subnet former Beginning message.

It should be noted that centralized management equipment in on-premise network, pre-sets virtual subnet and multicast information Correspondence；Then edge network receives the original message of terminal transmission, the virtual subnet belonging to the terminal can be judged, to make tunnel Road outer layer carries corresponding multicast information.Specifically, above-mentioned multicast information is determined according to local multicast forwarding table, wherein originally Ground multicast forward table is generated according to the management information that centralized management equipment issues；Either by between concentration copy-point Signaling protocol generate；Such as pre-setting virtual subnet 1 and multicast group IP address Group1 correspondences, then edge network receives The original message that terminal is sent judges to know the virtual subnet belonging to the terminal as virtual subnet 1, to make tunnel outer layer carry Multicast group IP address be Group1.

In the present embodiment, copy-point is concentrated by introducing, makes source edge network that multicast message is sent to concentration copy-point, Multicast message is sent from concentration copy-point at least one purpose edge network, therefore copy-point is concentrated to bear message multicast mistake Duplication burden in journey, reduces the network burden of edge network, improves the efficiency of message multicast, is conducive to promote the logical of network Believe performance.

Fig. 3 is the signaling diagram of the processing method embodiment three of message multicast of the present invention.As shown in figure 3, the present embodiment combines Previous embodiment one and embodiment two, are further detailed the processing method of message multicast, this method includes：

S301, source edge network receive the original message that second terminal is sent.

Above-mentioned second terminal is a local terminal of source edge network management, and the original message which sends is For other-end (i.e. the first terminal of purpose edge network management) multicast information into the same virtual subnet.

S302, source edge network obtain multicast message according to original message.

Original message can be encapsulated the first single tunnel outer layer by source edge network, obtain the multicast message, and above-mentioned the One single tunnel outer layer can be the tunnels unicast overlay outer layer, and the first single tunnel outer layer carries the void as multicast information Quasi- mobile network identification number, and the management information that edge network can be issued according to centralized management equipment determine that purpose IP address is collection The IP address of middle copy-point, wherein virtual process identifications number correspond to virtual subnet.

S303, source edge network send multicast message to concentration copy-point.

Multicast message is sent to by source edge network according to concentration copy-point IP address concentrates copy-point IP address corresponding Concentrate copy-point；It is to need to pass through it is understood that when concentration copy-point being made to receive the multicast message that source edge network is sent Multiple intermediate equipments search singlecast router forwarding table and multicast message are transmitted to concentration according to copy-point IP address is concentrated in network At copy-point, above-mentioned intermediate equipment can be frame topcross etc..Fig. 4 is the network architecture signal in the embodiment of the present invention three Figure.As shown in figure 4, there are multiple intermediate equipments between concentration copy-point and edge network concentrates copy-point and side for transmitting Message between hoddy member, and source edge network and purpose edge network are edge net with the same function in the present embodiment Member, the direction of transfer of multicast message, has carried out edge network in the area of source edge network and purpose edge network for ease of description Point, thus in Fig. 4 edge network 1, edge network 2 and any one edge network of edge network 3 according to the sender of multicast message To, can be the present embodiment in source edge network or purpose edge network, correspondingly, the terminal that each edge network is connected It is first terminal or second terminal according to the direction of transfer of multicast message.

S304, copy-point is concentrated to obtain multicast information according to multicast message.

Since the protocol fields of the first single tunnel outer layer (being the tunnels above-mentioned unicast overlay outer layer) show the tunnel Outer layer is the first single tunnel outer layer, and copy-point is concentrated according to layer protocol outside the first single tunnel, can to learn the of multicast message One single tunnel outer layer carries multicast information, and obtains original message by decapsulation, wherein multicast information is virtual network mark Knowledge number.

S305, copy-point is concentrated to determine at least one purpose edge network according to multicast information.

It concentrates copy-point to search local multicast forwarding table according to virtual process identifications number, determines at least one purpose edge net The Internet protocol IP address of member.Above-mentioned local multicast forwarding table is also the management letter issued in advance according to centralized management equipment Breath generates the local multicast forwarding table for determining destination address.

S306, copy-point is concentrated to send original message to purpose edge network.

It concentrates copy-point to obtain original message in S305, replicates the original message and obtain and purpose edge network number Identical at least one original message；Then according to the IP address of each purpose edge network, each original message is passed through into envelope Purpose single tunnel outer layer is filled, is respectively sent to each purpose edge network, which can be unicast The tunnels overlay outer layer or unicast GRE (Generic Routing Encapsulation, generic route encapsulation) tunnel Road outer layer.Of course, it should be understood that make purpose edge network to local terminal multicast original message, outside purpose single tunnel Virtual process identifications number on floor are still corresponding with above-mentioned virtual subnet.

S307, purpose edge network obtain original message.

The original message that each purpose edge network receives at this time is by purpose single tunnel outer envelope, purpose edge network Original message is obtained by being decapsulated to purpose single tunnel outer layer, while also virtual process identifications are arrived in study on tunnel outer layer Number.

S308, purpose edge network are to first terminal multicast original message.

Original message is sent to the local terminal respectively managed according to virtual process identifications number by purpose edge network, i.e., Above-mentioned first terminal realizes the multicast of message.

It should be noted that have recorded virtual process identifications number corresponding for the local multicast forwarding table of above-mentioned concentration copy-point The IP address of each edge network includes the IP address of source edge network, but copy-point is concentrated to support source port pruning function, i.e., When copy-point being concentrated to replicate forwarding original message to edge network, it will not replicate and forward to source edge network, that is to say, that this reality It applies in the purpose edge network in example including the source edge network in S302.

It should be added that before the processing method for executing the present embodiment message multicast, copy-point, edge are concentrated Network element is respectively received the management information of centralized management equipment transmission；Management information includes following at least two information：

Virtual subnet information, edge network IP address information, multicast group IP address information and concentration copy-point IP address letter Breath；Wherein any one of management information information and in addition to this information at least one of there are incidence relations between information； Copy-point is then concentrated to generate local multicast forwarding table according to the management information；Alternatively, by concentrate copy-point with it is at least one Signaling protocol between edge network knows the advertised information of each edge network；The advertised information includes each edge network IP address, the virtual subnet information of edge network management and the corresponding multicast information of each virtual subnet；The multicast information exists It can be virtual process identifications number in the present embodiment, then concentrate copy-point according to the advertised information, generate local multicast forwarding Table.For example, being wrapped in the local multicast forwarding-table item that concentration copy-point 1 is generated according to the incidence relation of virtual subnet and edge network The correspondence of virtual subnet corresponding virtual process identifications number and edge network is included, then concentrates copy-point can be according to multicast message Upper virtual process identifications number 3000, know 3000 with the IP of purpose edge network 2 by inquiring local multicast forwarding table Location corresponds to, then the multicast message received can be forwarded to purpose edge network 2.

For edge network, receive the management information that issues of centralized management equipment, the management information include it is following extremely Few two information：Virtual subnet information, multicast group IP address information and concentration copy-point IP address information；Appointing in management information One information and in addition to this information at least one of there are incidence relations between information；Then edge network is according to management information Generate local multicast forwarding table；Alternatively, by concentrating the signaling protocol between copy-point, such as BGP (Border Gateway Protocol, Border Gateway Protocol), send advertised information to copy-point is concentrated；The advertised information includes the IP of edge network Address, the virtual subnet information of edge network management and the corresponding multicast group IP address of each virtual subnet；Then according to Advertised information generates corresponding local multicast forwarding table towards copy-point is concentrated.Subsequent edge network is in the report to local terminal Text carries out a group sowing time, can correctly handle the original message that local terminal is sent according to local multicast forwarding table, such as exist The tunnel outer layer of multicast message is written correct virtual process identifications number and is sent at corresponding concentration copy-point.

In existing message retransmission technique, often by primary forwarding, source IP address can all change multicast message, and It, may be with the source terminal of transmission original message after the local terminal that each purpose edge network is managed receives original message Unicast communication is carried out, but since the IP address of source edge network is replaced in the repeating process of multicast message, subsequent two Unicast communication between a terminal causes the burden of concentrating copy-point there is still a need for the concentrated controling management by concentrating copy-point Weight, therefore, more preferably, Fig. 5 is the signaling diagram of the processing method example IV of message multicast of the present invention.As shown in figure 5, this implementation Example optimizes the processing method of message multicast on the basis of embodiment three, and this method includes：

S401, source edge network receive the original message that second terminal is sent.

The network architecture in the present embodiment can refer to the network architecture shown in Fig. 4, but flexible, may be used preferably The network architecture, for example, Fig. 6 is the first network architecture schematic diagram in the embodiment of the present invention four.As shown in fig. 6, in order to alleviate side Terminal dual homed can be accessed two edge networks (NVE1 and NVE2) by the burden of hoddy member, then dual homed accesses NVE1's and NVE2 Terminal, when sending original message, a link hair is selected according to Load Sharing Algorithm (such as hash algorithm) as second terminal Send original message to NVE1 or NVE2；Wherein NVE1 and NVE2 towards concentrate copy-point with being configured with identical edge network IP Location.

S402, source edge network obtain multicast message according to original message.

Specifically, original message is encapsulated Multicast Tunnel outer layer by source edge network, the Multicast Tunnel outer layer carries conduct The multicast group IP address of multicast information；Then the original message for encapsulating Multicast Tunnel outer layer is encapsulated outside the second single tunnel Layer, obtains the multicast message.

For example, original message is encapsulated Multicast Tunnel outer layer (such as the tunnels multicast overlay outer layer) by edge network, And the tunnels multicast overlay outer layer carries the multicast group IP address as multicast information, wherein multicast group IP address and void Quasi- subnet corresponds to, i.e., the management information issued according to centralized management equipment when edge network handles original message is it is found that current former The corresponding multicast group IP address of virtual subnet where beginning message, it is understood that, the tunnels multicast overlay outer layer is still taken Band virtual process identifications VNID sends original message, and the IP of source edge network for purpose edge network to local terminal Address is carried on the tunnels multicast overlay outer layer；After message to be encapsulated to the tunnels multicast overlay outer layer, seal again The second single tunnel outer layer (can be unicast gre tunneling outer layer) is filled, which is to concentrate again System point IP address, and the source IP address of unicast gre tunneling outer layer is also the IP address of source edge network at this time.

According to the network architecture shown in fig. 6, then after NVE1 or NVE2 receives the original message that second terminal is sent, NVE1 or NVE2 is handled original message using the above method, then the IP address for the source edge network that tunnel outer layer carries is The identical IP address that NVE1 and NVE2 is configured is made.

It should be noted that above-mentioned specific tunnel outer layer is (i.e. outside overlay Multicast Tunnel outer layer and GRE single tunnels Layer) only as illustrating to illustrate, tunnel outer layer is not exemplified as limiting with above-mentioned in practice.

S403, source edge network send multicast message to concentration copy-point.

If the network architecture shown in fig. 6 is used in the present embodiment, since NVE1 and NVE2 is configured with identical edge net First IP address, so no matter being sent to the multicast message for concentrating copy-point, the source edge on the multicast message by NVE1 or NVE2 Network element IP address is identical.

In addition, it is flexible, concentrate copy-point that the mode architecture network of load balancing can also be used.Fig. 7 is that the present invention is implemented Second of network architecture schematic diagram in example four.Copy-point 2 is concentrated to be used to share turn for concentrating copy-point 1 as shown in fig. 7, can dispose Hair burden, naturally it is also possible to which deployment is more to concentrate copy-point to be used to share the forwarding burden for concentrating copy-point 1；There are multiple When concentrating copy-point, centralized management equipment, which has shifted to an earlier date, to be issued management information to each edge network and informs the corresponding collection of each virtual subnet Multicast message in the IP address of middle copy-point, such as regulation virtual subnet 1 to virtual subnet 50 is sent by concentration copy-point 1, Then the multicast message in virtual subnet 51 will not be sent to by source edge network concentrates copy-point 1, but will according to management information Multicast message is sent to 51 corresponding concentration copy-point 2 of virtual subnet.It concentrates copy-point to break down when one of, such as collects 1 failure of middle copy-point, then centralized management equipment can more new administration information, and again under the concentration copy-point of each normal work It sends out management information updated, so that other concentration copy-points that can be worked normally is undertaken (as concentrated copy-point 2) multiple in fault set The burden of point is made, i.e., by issuing management information, concentration copy-point 2 is made to report the group in virtual subnet 1 to virtual subnet 50 The duplicated multicast of text.

S404, copy-point is concentrated to obtain multicast information.

Copy-point is concentrated to obtain the original message for encapsulating Multicast Tunnel outer layer according to the multicast message, and described in study The multicast information carried on Multicast Tunnel outer layer, wherein multicast information is multicast group IP address；

It concentrates copy-point to search local multicast forwarding table according to the multicast group IP address, determines at least one purpose edge The IP address of network element.Specifically, due to the protocol fields of the second single tunnel outer layer (being above-mentioned unicast gre tunneling outer layer) Show the tunnel outer layer be the second single tunnel outer layer, concentrate copy-point can according to layer protocol outside the second single tunnel by group report The second single tunnel outer layer decapsulation of text, obtains the multicast message for encapsulating Multicast Tunnel outer layer；Outside further according to Multicast Tunnel Layer protocol learns the multicast group IP address that Multicast Tunnel outer layer carries.

S405, copy-point is concentrated to determine at least one purpose edge network according to multicast information.

It concentrates copy-point to search local multicast forwarding table according to multicast group IP address, determines at least one purpose edge network IP address.

S406, copy-point is concentrated to send original message to purpose edge network.

It concentrates copy-point to replicate the original message for encapsulating Multicast Tunnel outer layer, obtains identical as purpose edge network number At least one original message for encapsulating Multicast Tunnel outer layer；According to the IP address of each purpose edge network, by each envelope The original message of Multicast Tunnel outer layer has been filled by encapsulating purpose single tunnel outer layer, has been respectively sent to each purpose edge network. The purpose single tunnel outer layer carries the IP address of purpose edge network；For example, concentrate copy-point by the unicast in S402 Gre tunneling outer layer decapsulates, and the multicast message of the tunnels encapsulation multicast overlay outer layer is obtained, according to multicast overlay tunnels After multicast group IP address on road outer layer determines the IP address of at least one purpose edge network, multicast overlay tunnels will be encapsulated The original message of road outer layer replicates, and on the tunnels the multicast overlay outer layer for the original message that each duplication obtains again One layer of purpose single tunnel outer layer is encapsulated, which can be unicast gre tunneling outer layer, can also be other Single tunnel outer layer；It follows that in S405, as the source edge network IP address of source IP address on Multicast Tunnel outer layer It is not replaced.

But it need to supplement, if part purpose edge network is born by other concentration copy-points, also according to multicast information At least one first IP address for concentrating copy-point is determined, then replicates the original message for encapsulating Multicast Tunnel outer layer, obtains At least one original message for encapsulating Multicast Tunnel outer layer identical with the purpose edge network number；According to each purpose side Each is encapsulated the original message of Multicast Tunnel outer layer by encapsulating purpose single tunnel outer layer by the IP address of hoddy member, It is respectively sent to each purpose edge network.For example, Fig. 8 is third network architecture schematic diagram in the embodiment of the present invention four.Such as Shown in Fig. 8, after concentrating copy-point 1 to receive the multicast message that the NVE1 for concentrating copy-point 1 to be born is sent, according to what is got Multicast group IP address knows that purpose edge network further includes being collected other than concentrating NVE3~NVE10 that copy-point 1 is born Purpose edge network NVE50~NVE99 that middle copy-point 3 is born then concentrates copy-point 2 that will encapsulate outside the tunnels multicast overlay The multicast message encapsulation forwarding single tunnel outer layer of layer, which may be outside above-mentioned unicast gre tunneling Layer, but the unicast gre tunneling outer layer at this time, the i.e. purpose IP address of the forwarding single tunnel outer layer are that copy-point is concentrated on upper layer IP address concentrates the IP address of copy-point 1, wherein it is that copy-point is concentrated to execute sheet that the IP address of copy-point is concentrated on upper layer Before the processing method of embodiment, receive what the management information that centralized management equipment issues was known, and the upper layer is concentrated and is replicated The IP address of point is stored into local multicast forwarding table, when needing to forward to other the first concentration copy-points, just according to upper layer It concentrates the IP address of copy-point that message is first sent to the upper layer and concentrates copy-point.Using the network architecture shown in Fig. 8, then due to It concentrates copy-point to determine that the IP address of copy-point is concentrated on upper layer according to local multicast forwarding table in S405, then will encapsulate the second tunnel The multicast message encapsulation forwarding single tunnel outer layer of road outer layer, the purpose IP address of forwarding single tunnel outer layer is that upper layer concentration is multiple Make the IP address of point；The multicast message of encapsulation forwarding single tunnel outer layer is then sent to upper layer and concentrates copy-point.It needs to mend Explanation is filled, the network architecture of Fig. 8 is equally applicable to previous embodiment three, copy-point is concentrated by upper layer, so that upper layer collection Middle copy-point by original message or encapsulate Multicast Tunnel outer layer original message be sent to it is at least one first concentrate copy-point. As shown in figure 8, concentrating copy-point 1 according to the IP address of each purpose edge network (NVE3~NVE10), respectively by each encapsulation purpose The multicast message of single tunnel outer layer is sent to other than each purpose edge network, will also encapsulate the group of forwarding single tunnel outer layer It reports text and is sent to upper layer concentration copy-point, which concentrates copy-point identical with the operation principle of copy-point 1 is concentrated, to forwarding The multicast group IP address carried on the tunnels multicast overlay outer layer is known in the decapsulation of single tunnel outer layer, and is concentrated according to upper layer The local multicast forwarding table of copy-point determines that the purpose IP address of next forwarding is the first IP address (concentration for concentrating copy-point Copy-point 2), it is similar to and concentrates copy-point 1, upper layer concentrates copy-point that can again be sealed on the tunnels encapsulation multicast overlay outer layer Dress forwarding single tunnel outer layer, but the purpose IP address of copy-point encapsulation forwarded on single tunnel outer layer is concentrated by upper layer at this time To concentrate the IP address of copy-point 2；Finally, the edge network that copy-point 2 is managed to it is concentrated to send multicast message, wherein collecting The process that middle copy-point 2 sends multicast message to NVE50~NVE99 is reported with copy-point 1 is concentrated to NVE3~NVE10 transmission groups The process of text is similar, and details are not described herein.

In addition, with as embodiment three classes, concentrates copy-point to support source port pruning function, that is, concentrate copy-point to purpose When edge network replicates forwarding original message, it will not replicate and forward to source edge network.

According to the above description, concentrating copy-point that unicast feature can be used only, therefore answered in existing network environment When with the processing method of the message multicast in the embodiment of the present invention, by using the network architecture in Fig. 8, by existing network rings It does not support the equipment of multicast functionality as a node in border, applies in the processing method of message multicast, realize used equipment It recycles；Likewise, using the network architecture shown in Fig. 8, as the source edge network of source IP address on Multicast Tunnel outer layer IP address is not replaced.

S407, purpose edge network obtain original message.

Each purpose edge network receive concentrate copy-point send multicast message after, to two layers of tunnel of multicast message outside Layer is decapsulated, and gets original message, while virtual process identifications number are arrived in study on tunnel outer layer；And at this time according to upper The processing procedure described in S403~S407 is stated it is found that the source IP address on the second tunnel outer layer of multicast message remains source edge Network element IP address.

S408, purpose edge network are to first terminal multicast original message.

Original message group is cast to local terminal by purpose edge network according to virtual process identifications number, realizes the group of message It broadcasts.

Above-mentioned source edge network and purpose edge network are that edge network with the same function is in the present embodiment Convenient for describing the direction of transfer of multicast message, the differentiation of source edge network and purpose edge network has been carried out to edge network.

It should be added that before the processing method for executing the present embodiment message multicast, copy-point is concentrated to receive The management information that centralized management equipment issues, the management information include following at least two information：

Virtual subnet information, edge network IP address information, multicast group IP address information and concentration copy-point IP address letter Breath；Any one of above-mentioned management information information and in addition to this information at least one of there are incidence relations between information； Local multicast forwarding table is generated according to the management information；Alternatively,

By concentrating the signaling protocol between copy-point and at least one edge network, the notice letter of each edge network is received Breath；The advertised information includes virtual subnet information and the corresponding multicast group IP of each virtual subnet of the edge network management Location；It then concentrates copy-point according to the advertised information, generates local multicast forwarding table, copy-point is then concentrated to receive a group report Wen Hou can determine next purpose IP address according to the local multicast forwarding table；For example, copy-point 1 is concentrated to know multicast message Multicast group IP address be Group1, by inquire local multicast forwarding table know Group1 with concentrate copy-point 2 IP address It is corresponding, then the multicast message received can be forwarded to and concentrate copy-point 2.

Correspondingly, edge network also before realizing the present embodiment, receives the management information that centralized management equipment issues, institute It includes following at least two information to state management information：Virtual subnet information, multicast group IP address information and concentration copy-point IP Location information；Exist between any one of management information information and at least one information in addition to this information and is associated with System；Then edge network generates local multicast forwarding table according to management information；Alternatively, by concentrating the signaling between copy-point to assist View sends advertised information to copy-point is concentrated；The advertised information includes the IP address of edge network, the void of edge network management Quasi- subnet information and the corresponding multicast information of each virtual subnet；In the present embodiment, the multicast information is for multicast group IP Location；According to the advertised information, corresponding local multicast forwarding table is generated towards copy-point is concentrated.Such as edge network by itself The advertised informations such as establishment, the deletion of virtual subnet are advertised to concentration copy-point and the corresponding multicast group IP address of each virtual subnet It informs and gives concentration copy-point, while so that concentration copy-point is generated local multicast forwarding table according to these advertised informations, edge Network element also generates local multicast forwarding table accordingly；Further, in the network architecture as shown in Figure 8, copy-point is concentrated to receive After the advertised information sent to the edge network born, which can be also sent to other and concentrate copy-point, such as Can be sent to the advertised information after concentrating copy-point 1 to receive advertised information concentrates copy-point 2 and upper layer to concentrate copy-point, with Concentration copy-point 2 and upper layer is set to concentrate each self-generating local multicast forwarding table of copy-point.

In the present embodiment, copy-point, the multicast message for making concentration copy-point send source edge network are concentrated by introducing It is handled, and multicast message is sent to by purpose edge network according to multicast information, realized the multicast of message, reduce edge The network burden of network element, meanwhile, in message multicast procedures in the present embodiment, multicast message encapsulates two layers of tunnel outer layer, It is forwarded even if being replicated via multiple nodes (copy-point, upper layer is concentrated to concentrate dubs point), but outside the second tunnel of multicast message Source IP address on layer is not replaced, then two terminals in subsequent virtual subnet can directly carry out unicast communication, need not be by Copy-point centralized management is concentrated, the burden for concentrating copy-point is reduced, is conducive to promote the communication performance of network.

Fig. 9 is a kind of structure chart for concentrating copy-point embodiment one of the present invention.As shown in figure 9, the concentration copy-point includes：

Receiving module 501, the multicast message sent for receiving source edge network, multicast message includes multicast information and void Original message in quasi- subnet；

Determining module 502, for determining at least one purpose edge network according to multicast information；

Sending module 503, for original message to be sent at least one purpose edge network by multicast replication mode, So that first terminal multicast original message of each purpose edge network to corresponding virtual subnet.

Each module in the present embodiment corresponds to above-mentioned each method embodiment, and details are not described herein.

In the present embodiment, processing, and root are forwarded by the multicast message for concentrating copy-point to send source edge network Multicast message is sent to purpose edge network according to multicast information, realizes the multicast of message, the network for reducing edge network is negative Load, improves the efficiency of message multicast, is conducive to promote the communication performance of network.

Figure 10 is a kind of structure chart for concentrating copy-point embodiment two of the present invention.As shown in Figure 10, the present embodiment is in Fig. 9 Shown in concentrate copy-point on be described in detail, determining module 502 be specifically used for study multicast message the first single tunnel The multicast information that outer layer carries, and obtain original message；Wherein, multicast information is virtual process identifications number；

Local multicast forwarding table is searched according to virtual process identifications number, determines that the network of at least one purpose edge network is mutual Even Protocol IP address.

Further, sending module 503 specifically includes：

Copied cells 513 obtain identical with purpose edge network number at least one original for replicating original message Message；

Transmission unit 523, for the IP address according to each purpose edge network, by each original message by encapsulating mesh Single tunnel outer layer, be respectively sent to each purpose edge network.

Further, determining module 502 is specifically used for encapsulating the original of Multicast Tunnel outer layer according to multicast message acquisition Message；

The multicast information carried on study Multicast Tunnel outer layer, wherein multicast information is multicast group IP address；

Local multicast forwarding table is searched according to multicast group IP address, determines the IP address of at least one purpose edge network.

Then copied cells 513 are additionally operable to replicate the original message for encapsulating Multicast Tunnel outer layer, obtain and purpose edge net The identical at least one original message for encapsulating Multicast Tunnel outer layer of first number；

Transmission unit 523 is additionally operable to, according to the IP address of each purpose edge network, each be encapsulated outside Multicast Tunnel The original message of layer is respectively sent to each purpose edge network by encapsulating purpose single tunnel outer layer.

Further, determining module 502 further defines at least one first IP for concentrating copy-point according to multicast information Location,

Then sending module 503 be additionally operable to by original message or encapsulate Multicast Tunnel outer layer original message pass through encapsulation turn Single tunnel outer layer is sent out, upper layer is sent to and concentrates copy-point, so that upper layer concentrates copy-point by original message or to encapsulate multicast The original message of tunnel outer layer is sent at least one first and concentrates copy-point.

Receiving module 501 is additionally operable to receive the management information that centralized management equipment issues, and the management information includes following At least two information：

Then the concentration copy-point further includes：

Generation module 504, for generating local multicast forwarding table according to the management information；Alternatively,

Receiving module 501 is used to, by concentrating the signaling protocol between copy-point and at least one edge network, receive each The advertised information of edge network；The advertised information include the IP address of each edge network, edge network management virtual subnet Information and the corresponding multicast information of each virtual subnet；

Generation module 504 is additionally operable to, according to the advertised information, generate local multicast forwarding table.

Figure 11 is a kind of structure chart of edge network embodiment one of the invention.As shown in figure 11, which includes：

Receiving module 601, for receiving the original message that second terminal is sent in virtual subnet；

Sending module 602, for, to copy-point transmission multicast message is concentrated, being replicated with passing through to concentrate according to original message Point makes at least one purpose edge network to the first terminal multicast original message of corresponding virtual subnet；Wherein, multicast message packet Multicast information and original message are included, multicast information is determined according to management information.

Figure 12 is a kind of structure chart of edge network embodiment two of the invention.As shown in figure 12, the present embodiment is in Figure 11 Shown on the basis of edge network, further retouch edge network in detail, the sending module 602 of the edge network specifically includes：

Encapsulation unit 612 obtains multicast message, the first unicast for original message to be encapsulated the first single tunnel outer layer Tunnel outer layer carries the virtual process identifications number as multicast information, wherein virtual process identifications number correspond to virtual subnet.

Transmission unit 622, for sending multicast message to concentration copy-point.

Encapsulation unit 612 is additionally operable to original message encapsulating Multicast Tunnel outer layer, and Multicast Tunnel outer layer, which carries, is used as multicast The multicast group IP address of information；

Original message to encapsulating Multicast Tunnel outer layer encapsulates the second single tunnel outer layer, obtains multicast message；

Transmission unit 622 is additionally operable to multicast message being sent to concentration copy-point.

Receiving module 601 is additionally operable to receive the management information that centralized management equipment issues, and management information includes following information：

Virtual subnet and virtual process identifications and the correspondence for concentrating copy-point, virtual subnet and multicast group IP address and Concentrate the correspondence of copy-point.

Receiving module 601 for receiving the management information that centralized management equipment issues, the management information include it is following extremely Few two information：

Then the edge network further includes generation module 603, and the generation module 603 generates this according to the management information Ground multicast forward table；Alternatively, the sending module 602 is used for by concentrating the signaling protocol between copy-point, it is multiple to concentrating System point sends advertised information；The advertised information includes the IP address of edge network, the virtual subnet information of edge network management And the corresponding multicast information of each virtual subnet；Then the generation module 604 is replicated according to the advertised information towards concentrating Point generates corresponding local multicast forwarding table.

It should be noted that in processing procedure of the edge network according to message multicast in the present embodiment, as source edge Network element, which is edge network with the same function with purpose edge network, then it should be understood that source edge net Member in the processing procedure of other message multicasts may edge network as a purpose, then edge network further includes having to tunnel outer layer The decapsulation module decapsulated.

Figure 13 is a kind of structure chart for concentrating copy-point embodiment three of the present invention.As shown in figure 13, the concentration copy-point packet It includes：

Receiver 701, the multicast message sent for receiving source edge network, multicast message include multicast information and virtual Original message in subnet；

Processor 702, for determining at least one purpose edge network according to multicast information；

Transmitter 703, for original message to be sent at least one purpose edge network by multicast replication mode, with Make each purpose edge network to the first terminal multicast original message of corresponding virtual subnet.

Further, processor 702 is specifically used for the multicast letter that the first single tunnel outer layer of study multicast message carries Breath, and obtain original message；Wherein, multicast information is virtual process identifications number；

Further, it is identical with purpose edge network number extremely to be specifically used for the acquisition of replicating original message for transmitter 703 A few original message；

Also particularly useful for the IP address according to each purpose edge network, by each original message by encapsulating purpose unicast Tunnel outer layer is respectively sent to each purpose edge network.

Further, processor 702 is specifically used for obtaining the original report for encapsulating Multicast Tunnel outer layer according to multicast message Text；

Then transmitter 703 obtains and purpose edge network for replicating the original message for encapsulating Multicast Tunnel outer layer The identical at least one original message for encapsulating Multicast Tunnel outer layer of number；

It is additionally operable to, according to the IP address of each purpose edge network, each be encapsulated to the original message of Multicast Tunnel outer layer By encapsulating purpose single tunnel outer layer, it is respectively sent to each purpose edge network.

Further, processor 702 further defines at least one first IP address for concentrating copy-point according to multicast information,

Then transmitter 703 is additionally operable to original message or encapsulates the original message of Multicast Tunnel outer layer by encapsulating forwarding Single tunnel outer layer is sent to upper layer and concentrates copy-point, so that upper layer concentrates copy-point by original message or to encapsulate multicast tunnel The original message of road outer layer is sent at least one first and concentrates copy-point.

Receiver 701 is additionally operable to receive the management information that issues of centralized management equipment, the management information include it is following extremely Few two information：

Then processor 702 is additionally operable to generate local multicast forwarding table according to the management information；Alternatively,

Receiver 701 is used to, by concentrating the signaling protocol between copy-point and at least one edge network, receive each side The advertised information of hoddy member；The advertised information include the IP address of each edge network, edge network management virtual subnet letter Breath and the corresponding multicast information of each virtual subnet；

Then processor 702 is additionally operable to, according to the advertised information, generate local multicast forwarding table.

Figure 14 is a kind of structure chart of edge network embodiment three of the invention.As shown in figure 14, which includes：

Receiver 801, for receiving the original message that second terminal is sent in virtual subnet；

Transmitter 802, for according to original message to concentrate copy-point send multicast message, with by concentrate copy-point, Make at least one purpose edge network to the first terminal multicast original message of corresponding virtual subnet；Wherein, multicast message includes Multicast information and original message, multicast information are determined according to management information.

Further, transmitter 802, for by original message the first single tunnel outer layer of encapsulation, obtaining multicast message, the One single tunnel outer layer carries the virtual process identifications number as multicast information, wherein virtual process identifications number correspond to virtual subnet Net.

Transmitter 802, for sending multicast message to concentration copy-point.

Transmitter 802 is additionally operable to original message encapsulating Multicast Tunnel outer layer, and Multicast Tunnel outer layer is carried to be believed as multicast The multicast group IP address of breath；

Transmitter 802 is additionally operable to multicast message being sent to concentration copy-point.

Receiver 801 is additionally operable to receive the management information that centralized management equipment issues, and management information includes following information：

Receiver 801 for receiving the management information that centralized management equipment issues, the management information include it is following at least Two information：

Then edge network further includes processor 803, for generating local multicast forwarding table according to the management information；Or Person, transmitter 802 are additionally operable to by concentrating the signaling protocol between copy-point, and advertised information is sent to copy-point is concentrated；Institute It includes that the IP address of edge network, the virtual subnet information of edge network management and each virtual subnet correspond to state advertised information Multicast information；The generation module generates corresponding local multicast forwarding according to the advertised information, towards copy-point is concentrated Table.

It should be noted that in processing procedure of the edge network according to message multicast in the present embodiment, as source edge Network element, which is edge network with the same function with purpose edge network, then it should be understood that source edge net Member in the processing procedure of other message multicasts may edge network as a purpose, then the receiver 801 of edge network also have The function that tunnel outer layer is decapsulated.

One of ordinary skill in the art will appreciate that：Realize that all or part of step of above-mentioned each method embodiment can lead to The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer read/write memory medium.The journey When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned includes：ROM, RAM, magnetic disc or The various media that can store program code such as person's CD.

Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution The range of scheme.

Claims

1. a kind of processing method of message multicast, which is characterized in that including：

Copy-point is concentrated to receive the first message that source edge network is sent, first message includes multicast information and original report Text；

The concentration copy-point determines at least one purpose edge network according to the multicast information；

The original message is sent at least one purpose edge net by the concentration copy-point by multicast replication mode Member.

2. according to the method described in claim 1, it is characterized in that, the original message is passed through group in the concentration copy-point It broadcasts copy mode to be sent to after few purpose edge network, this method further includes：

Original message described in terminal multicast of at least one purpose edge network to the correspondence multicast information.

3. method according to claim 1 or 2, which is characterized in that the concentration copy-point is true according to the multicast information Fixed at least one purpose edge network, including：

The multicast message includes multicast group procotol IP or mobile network identification number；

The concentration copy-point obtains multicast group IP address or virtual process identifications number by decapsulating first message；

The concentration copy-point determines at least one mesh according to the multicast group IP address or the virtual process identifications number Edge network IP address.

4. according to any method in claims 1 to 3, which is characterized in that the concentration copy-point is centralized overlay network Network overlay multicast replication equipment.

5. according to any method in Claims 1-4, which is characterized in that the original message is by by the source side The terminal of edge NE management is sent to the source edge network.

6. according to any method in claim 1 to 5, which is characterized in that the multicast information is located at described first and reports The tunnel outer layer of text.

7. according to any method in claim 1 to 6, which is characterized in that the terminal of the source edge network management with The terminal that the original message is received at least one purpose edge network is located at same virtual subnet.

8. a kind of processing method of message multicast, which is characterized in that including：

Source edge network receives the original message that the first terminal of the source edge network management is sent, which is used for the source Edge network multicast is sent to second terminal；

The source edge network generates the first message by encapsulating the original message, and first message is sent to concentration Copy-point, first message for it is described concentration copy-point by way of multicast replication to manage the second terminal at least one A purpose edge network sends the original message, wherein first message includes the original message and multicast information.

9. according to the method described in claim 8, it is characterized in that, the multicast information includes virtual process identifications number or multicast Set of network protocols IP address.

10. method according to claim 8 or claim 9, which is characterized in that the original message is by by the source edge network The terminal of management is sent to the source edge network.

11. according to any method in claim 8 to 10, which is characterized in that the multicast information is located at described first The tunnel outer layer of message.

12. a kind of concentration copy-point, which is characterized in that including receiver, processor and transmitter, wherein：

The receiver, the first message sent for receiving source edge network, first message includes multicast information and original Beginning message；

The processor, for determining at least one purpose edge network according to the multicast information；

The transmitter, for being sent to the original message to few purpose edge net by multicast replication mode Member.

13. concentration copy-point according to claim 12, which is characterized in that the multicast information includes virtual process identifications Number or multicast group network protocol IP address.

14. concentration copy-point according to claim 13, which is characterized in that

If the multicast information includes the virtual process identifications number, the processor is specifically used for according to the virtual network mark Know a number lookup local multicast forwarding table, determines the IP address of at least one purpose edge network；

If the multicast information includes the multicast group IP address, the processor is specifically used for according to the multicast group IP Local multicast forwarding table is searched in location, determines the IP address of at least one purpose edge network.

15. according to any concentration copy-point in claim 12 to 14, which is characterized in that the processor is additionally operable to root According to the IP address of at least one purpose edge network, by the original message by encapsulating purpose single tunnel outer layer, point It is not sent at least one purpose edge network.

16. according to any concentration copy-point in claim 12 to 15, which is characterized in that

The receiver is used to be believed according to the management for receiving the management information that centralized management equipment issues, the processor Breath generates the local multicast forwarding table, and the management information includes virtual subnet information, edge network IP address information, multicast At least two information in group IP address information and concentration copy-point IP address information, any one of described management information information There are incidence relations between at least one information in addition to this information；

Or

The receiver is used to, by the signaling protocol between the concentration copy-point and at least one edge network, receive each side The advertised information of hoddy member；The advertised information include the IP address of each edge network, edge network management virtual subnet letter Breath and the corresponding multicast information of each virtual subnet, the processor are used to generate the local group according to the advertised information Forwarding table is broadcast, at least one edge network includes the source edge network and at least one purpose edge network.

17. according to any concentration copy-point in claim 12 to 16, which is characterized in that the concentration copy-point is to concentrate Formula stacking network overlay multicast replication equipment.

18. according to any concentration copy-point in claim 12 to 17, which is characterized in that the original message is by quilt The terminal of the source edge network management is sent to the source edge network.

19. according to the concentration copy-point described in claim 12 to 18, which is characterized in that the terminal of the source edge network management It is located at same virtual subnet with the terminal for receiving the original message at least one purpose edge network.

20. an introduces a collection edge network, which is characterized in that including receiver and transmitter, wherein：

The receiver, the original message for receiving first terminal transmission；

The transmitter, for generating the first message according to the original message, first message includes the original message And multicast information；First message is sent to concentration copy-point, first message passes through for the concentration copy-point The mode of multicast replication sends the original message at least one purpose edge network.

21. source edge network according to claim 20, which is characterized in that the multicast information includes virtual process identifications Number or multicast group network protocol IP address.

22. the source edge network according to claim 20 or 21, which is characterized in that the original message is by by the source The terminal of edge network management is sent to the source edge network.

23. according to any source edge network in claim 20 to 22, which is characterized in that the multicast information is located at institute State the tunnel outer layer of the first message.

24. according to any source edge network in claim 20 to 23, which is characterized in that the receiver is additionally operable to connect The management information that centralized management equipment issues is received,

The management information includes virtual subnet and virtual process identifications and the correspondence of concentration copy-point, virtual subnet and group It broadcasts group IP address and concentrates the correspondence of copy-point；

Or the management information includes virtual subnet information, edge network IP address information, multicast group IP address information sum aggregate At least two information in middle copy-point IP address information, any one of described management information information in addition to this information At least one of there are incidence relations between information.

25. according to any source edge network in claim 20 to 23, which is characterized in that the transmitter is additionally operable to lead to The signaling protocol between the concentration copy-point is crossed, advertised information is sent to the concentration copy-point；The advertised information packet The IP address of edge network, the virtual subnet information of edge network management and the corresponding multicast information of each virtual subnet are included, The edge network includes the source edge network.

26. the source edge network according to claim 24 or 25, which is characterized in that further include processor, the processor For generating local multicast forwarding table according to the management information or the advertised information.

27. a kind of network system, which is characterized in that including any the concentration copy-point and right in claim 12 to 19 It is required that any source edge network in 20 to 26.

28. a kind of computer readable storage medium, which is characterized in that real when the program instruction is performed including program instruction Any method in existing claim 1 to 11.