CN105099846B

CN105099846B - The method and supplier edge device of data message transmission

Info

Publication number: CN105099846B
Application number: CN201410182560.3A
Authority: CN
Inventors: 张军林
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-04-30
Filing date: 2014-04-30
Publication date: 2018-10-19
Anticipated expiration: 2034-04-30
Also published as: CN105099846A; WO2015165311A1

Abstract

An embodiment of the present invention provides a kind of methods of data message transmission and PE equipment.This method includes：First PE equipment receives the data message that CE equipment is sent by the ES being connected between the first PE equipment and CE equipment, wherein the first PE equipment is the PE equipment of the bearer network of ether Virtual Private Network VPN；The Tag Packaging data message in the tunnels MP2MP in the label and bearer network of the ES that the first PE equipment is connected using the first PE equipment, wherein, each ES at least one ES of bearer network connection is connected between a CE equipment and multiple PE equipment of bearer network, and the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP；First PE equipment is sent datagram by the tunnels MP2MP.Technical scheme of the present invention can avoid the problem that triangle loop occur in customer side.

Description

The method and supplier edge device of data message transmission

Technical field

The present embodiments relate to the communications fields, a kind of method more particularly, to data message transmission and PE equipment.

Background technology

EVPN (Ethernet Virtual Private Network, ether Virtual Private Network) is a kind of based on BGP (Border Gateway Protocol, Border Gateway Protocol) and MPLS (Multi-Protocol Label Switching, Multiprotocol label switching) agreement technology.Customer rs site (Site) positioned at different geographical is connected respectively to the PE on bearer network Equipment, for example, (Provider Edge are supplied the PE in IP (Internet Protocol, Internet protocol) networks or MPLS network Answer quotient edge) equipment, correspond to there are one EVI (EVPN Instance, ether virtual private network (VPN) examples) in each PE equipment EVPN.EVPN carries the ether report between site-local and remote station by public network tunnel between PE equipment or private network tunnel Text.

Currently, in EVPN, can use P2MP LSP (Point to Multipoint Label Switch Path, Point-to-multipoint label switch paths) and MP2MP LSP (Multipoint Point to Multipoint Label Switch Path, multipoint-to-multipoint label switch paths) carrying BUM (Broadcast unknown-Unicast Multicast, broadcast, The general designation of unknown unicast and multicast message) flow.

MP2MP LSP can be the tunnels MP2MP based on MPLS, commonly used in being used as public network multicast tunnel in MPLS network Road, the hereinafter referred to as tunnels MP2MP.There are one root node and several leaf nodes by each MP2MP LSP, and the tunnels MP2MP are being built Two-way during vertical, i.e., when leaf node establishes label forwarding channel to the upstream node towards root node, upstream node Reversed label switched path can be also established between leaf node.BUM flows between each customer rs site can be by same MP2MP trees carry, i.e., the tunnels MP2MP are two-way.Therefore, compared with the tunnels P2MP, the tunnels MP2MP can reduce public network Multicast state table and forwarding table.

It, can be by a CE (Customer Edge, visitor in the technical solution by MP2MP tunnel transmission BUM flows Family edge) multilink bundling between equipment and multiple PE is at an ether TRUNK, also referred to as ethernet segment (Ethernet Segment, ES).For example, the link between link and the CE equipment and PE equipment 2 between a CE equipment and PE equipment 1 It is bundled into an ether TRUNK, i.e. link between CE equipment and PE equipment 1 and the link between CE equipment and PE equipment 2 It is bundled into an ether TRUNK.For example, the data message (for example, BUM flows) for being sent to PE equipment from CE equipment can be via PE equipment 1 or PE equipment 2 forward.Assuming that BUM flows are sent to PE equipment 1 from CE equipment, PE equipment 1 needs handle to be connect from customer side The BUM flows received are sent to all other PE equipment for belonging to same EVPN.For example, when PE equipment 2 is received from PE equipment 1 After the BUM flows of transmission, BUM flows can be forwarded to the local port being connect with CE equipment by PE equipment 2.May result in this way from The BUM flows that CE equipment is sent to PE equipment 1 are forwarded via PE equipment 2 again back to CE equipment, to data occur in customer side The problem of message detour is transmitted.

Invention content

An embodiment of the present invention provides a kind of method of data message transmission and PE equipment, can solve to occur in customer side The problem of data message detour is transmitted.

In a first aspect, a kind of method of data message transmission is provided, including：First PE equipment receives CE equipment and passes through company The data message that the ES being connected between the first PE equipment and the CE equipment is sent, wherein the first PE equipment is that ether is virtual The PE equipment of the bearer network of dedicated network VPN；First PE equipment is held using the label of the ES of the first PE equipment connection with this The Tag Packaging in the tunnels MP2MP data message in contained network, wherein each ES at least one ES of bearer network connection It is connected between a CE equipment and multiple PE equipment of the bearer network, the label of each ES at least one ES is by this The root node distribution in the tunnels MP2MP；First PE equipment sends the data message by the tunnels MP2MP.

With reference to first aspect, under the first possible realization method, the first PE equipment is the root section in the tunnels MP2MP Point, this method further include：First PE equipment receives the hair of each PE equipment at least one 2nd PE equipment of the bearer network The first route messages sent, first route messages carry the mark of the ES for the 2nd PE equipment connection for sending first route messages Know；First PE equipment is that the ES of each PE equipment connection at least one 2nd PE equipment distributes label；First PE Equipment sends secondary route message at least one 2nd PE equipment, which carries the tree in the tunnels MP2MP The mark of the ES of each PE equipment connection in the identification information of root, at least one 2nd PE equipment and for this is at least one The label of the ES distribution of each PE equipment connection in 2nd PE equipment.

With reference to first aspect or the possible realization method of any one of the first possible realization method of first aspect, Under second of possible realization method, the label and the bearer network of the ES that the first PE equipment is connected using the first PE equipment In the Tag Packaging in the tunnels the MP2MP data message, including：The ES's that first PE equipment is connected using the first PE equipment The broadcast domain of label, the label in the tunnels MP2MP and ether VPN (Virtual Private Network, Virtual Private Network) The Tag Packaging data message, the label of the wherein broadcast domain of ether VPN is used to indicate the data message and belongs to the ether The broadcast domain of VPN, and the label of the broadcast domain of at least one ether VPN of bearer network connection is by the tunnels MP2MP Root node distribution.

Second of possible realization method with reference to first aspect, under the third possible realization method, the first PE Equipment is the root node in the tunnels MP2MP, and this method further includes：First PE equipment receives at least one of bearer network At least one third route messages that each PE equipment in two PE equipment is sent, which, which carries, sends the third The mark of the broadcast domain of the ether VPN of the 2nd PE equipment connection of route messages；First PE equipment be this at least one second The broadcast domain of the ether VPN of each PE equipment connection in PE equipment distributes label；First PE equipment to this at least one Two PE equipment send the 4th route messages, the 4th route messages carry the tree root in the tunnels MP2MP identification information, this at least In one the 2nd PE equipment each PE equipment connection ether VPN broadcast domain mark and be at least one PE second The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in PE equipment.

With reference to first aspect or a kind of any of the above described possible realization method should under the 4th kind of possible realization method First PE equipment is using the Tag Packaging in the tunnels the MP2MP number in the label and the bearer network of the ES of the first PE equipment connection According to message, including：First PE equipment is using the label of the ES of the first PE equipment connection as vpn label, the MP2MP tunnels The label in road encapsulates the data message as outer layer label.

With reference to first aspect or a kind of any of the above described possible realization method should under the 5th kind of possible realization method Data message is broadcast, unknown unicast or multicast (BUM) message.

Second aspect provides a kind of method of data message transmission, including：It is logical that 2nd PE equipment receives the first PE equipment The data message that the tunnels MP2MP in the bearer network in ether Virtual Private Network VPN are sent is crossed, the wherein data message uses The Tag Packaging of the label and the tunnels MP2MP of the ES of first PE connections, the first PE equipment and the 2nd PE equipment are should The PE equipment of bearer network, the bearer network connection at least one ES in each ES be connected to customer edges (CE) equipment with Between multiple PE equipment of the bearer network, the label of each ES at least one ES is by the root node in the tunnels MP2MP Distribution；2nd PE equipment decapsulates the data message, obtains the label and the MP2MP tunnels of the ES of the first PE equipment connection The label in road；The label for the ES that 2nd PE equipment is connected according to the first PE equipment and the label in the tunnels MP2MP determine It is no to send the data message on the ES of the 2nd PE equipment connection.

In conjunction with second aspect, under the first possible realization method, the 2nd PE equipment connects according to the first PE equipment The label in the label of the ES connect and the tunnels MP2MP determines whether to send the datagram on the ES connecting with the 2nd PE equipment Text, including：The label for the ES that 2nd PE equipment is connected according to the first PE equipment and the label in the tunnels MP2MP determine this The mark of the ES of one PE equipment connection；It is connect with the 2nd PE equipment by comparing the mark of the ES of the first PE equipment connection The mark of ES, it is determined whether the data message is sent on the ES being connect with the 2nd PE equipment, wherein this method further includes： When the mark of the ES of first PE equipment connection is identical as the mark of ES that the 2nd PE equipment connects, the 2nd PE equipment does not exist The data message is sent on the ES being connect with the 2nd PE equipment；In the mark and the 2nd PE of the ES of the first PE equipment connection When the mark of the ES of equipment connection is different, the 2nd PE equipment sends the datagram on the ES being connect with the 2nd PE equipment Text.

In conjunction with the possible realization method of any one of the possible realization method of the first of second aspect or second aspect, Under second of possible realization method, the first PE equipment is the root node in the tunnels MP2MP, and this method further includes：This Two PE equipment send the first route messages in the bearer network, which carries the ES's of the 2nd PE equipment connection Mark；2nd PE equipment receives the secondary route message of the first PE equipment transmission, which carries the MP2MP The mark of the ES of each PE equipment connection in the identification information of the tree root in tunnel, at least one 2nd PE equipment of the bearer network And the label of the ES distribution for each PE equipment connection at least one 2nd PE equipment.

It, should under the third possible realization method in conjunction with second aspect or a kind of any of the above described possible realization method Data message further includes the label of the broadcast domain of ether VPN, is used to indicate the broadcast that the data message belongs to ether VPN Domain, and the label of the broadcast domain of at least one ether VPN of bearer network connection is distributed by the root node in the tunnels MP2MP 's.

In conjunction with the third possible realization method of second aspect, under the 4th kind of possible realization method, the first PE Equipment is the root node in the tunnels MP2MP, and this method further includes：2nd PE equipment sends third routing on the bearer network and disappears Breath, the third route messages carry the mark of the ether VPN broadcast domains of the 2nd PE equipment connection；2nd PE equipment receives should First PE equipment sends the 4th route messages, and the 4th route messages carry that the identification information of the tree root in the tunnels MP2MP, this holds In the 2nd PE equipment of at least one of contained network each PE equipment connection ether VPN broadcast domain mark and for this extremely The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in few 2nd PE equipment.

It, should under the 5th kind of possible realization method in conjunction with second aspect or a kind of any of the above described possible realization method Data message is broadcast, unknown unicast or multicast BUM messages.

The third aspect provides a kind of method of distribution label, including：First PE equipment receives at least one 2nd PE equipment In each PE equipment send the first route messages, first route messages carry send first route messages the 2nd PE The mark of the ES of equipment connection, the first PE equipment and at least one 2nd PE equipment are ether Virtual Private Network VPN's The PE equipment of bearer network, the bearer network connection at least one ES in each ES be connected to customer edges (CE) equipment with Between multiple PE equipment of the bearer network；First PE equipment is each PE equipment connection at least one 2nd PE equipment ES distribute label；First PE equipment sends secondary route message at least one 2nd PE equipment, which disappears Breath carries each PE equipment in the identification information of the tree root in the tunnels MP2MP of the bearer network, at least one 2nd PE equipment The mark of the ES of connection and the label of ES distribution for each PE equipment connection at least one 2nd PE equipment, this One PE equipment is the root node in the tunnels MP2MP.

In conjunction with the third aspect, under the first possible realization method, this method further includes：First PE equipment receive to At least one third route messages that each PE equipment in few 2nd PE equipment is sent, the third route messages carry hair Give the mark of the broadcast domain for the ether VPN that the 2nd PE equipment of the third route messages connects；First PE equipment be this at least The broadcast domain of the ether VPN of each PE equipment connection in one the 2nd PE equipment distributes label；First PE equipment to this extremely Few 2nd PE equipment sends the 4th route messages, the 4th route messages carry the first PE equipment mark, this at least In one the 2nd PE equipment each PE equipment connection ether VPN broadcast domain mark and be at least one PE second The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in PE equipment.

Fourth aspect provides a kind of method of distribution label, including：2nd PE equipment is in ether Virtual Private Network VPN Bearer network in send the first route messages, first route messages carry the 2nd PE equipment connection ES mark, this holds Each ES at least one ES of contained network connection is connected to customer edges (CE) equipment and multiple PE of the bearer network are set Between standby；2nd PE equipment receives the secondary route message that the first PE equipment is sent, which carries the carrying The mark of the ES of each PE equipment connection in the identification information of the tree root in the tunnels MP2MP of net, at least one 2nd PE equipment And at least one 2nd PE equipment each PE equipment connection ES distribution label, wherein the first PE equipment and At least one 2nd PE equipment is the PE equipment of the bearer network of ether Virtual Private Network VPN, and the first PE equipment is should The root node in the tunnels MP2MP.

In conjunction with fourth aspect, under the first possible realization method, this method further includes：2nd PE equipment is held at this Third route messages are sent in contained network, which carries the mark of the ether VPN broadcast domains of the 2nd PE equipment connection Know；2nd PE equipment receives the first PE equipment and sends the 4th route messages, and the 4th route messages carry the tunnels MP2MP The identification information of tree root, each PE equipment connection in the 2nd PE equipment of at least one of the bearer network ether VPN The broadcast domain distribution of the mark of broadcast domain and the ether VPN connected for each PE equipment at least one 2nd PE equipment Label.

5th aspect, provides a kind of PE equipment, including：Receiving module is set for receiving CE equipment by being connected to the PE The data message that the standby ES between the CE equipment is sent, wherein the PE equipment is the bearer network of ether Virtual Private Network VPN PE equipment；Package module, the label for the tunnels MP2MP in the label and the bearer network of the ES using PE equipment connection Encapsulate the data message, wherein each ES at least one ES of bearer network connection is connected to a CE equipment and is held with this Between multiple PE equipment of contained network, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP 's；Sending module sends the data message for passing through the tunnels MP2MP.

In conjunction with the 5th aspect, under the first possible realization method, which is the root node in the tunnels MP2MP, The PE equipment further includes：Distribution module, the receiving module also receive each of at least one 2nd PE equipment of the bearer network The first route messages that PE equipment is sent, first route messages carry the 2nd PE equipment connection for sending first route messages ES mark；The distribution module is that the ES of each PE equipment connection at least one 2nd PE equipment distributes label；It should Sending module sends secondary route message at least one 2nd PE equipment, which carries the tunnels MP2MP The identification information of tree root, each PE equipment connection at least one 2nd PE equipment ES mark and for this at least The label of the ES distribution of each PE equipment connection in one the 2nd PE equipment.

The possible realization method of any one of the first possible realization method in conjunction with the 5th aspect or the 5th aspect, Under second of possible realization method, the package module is using the label of the ES of PE equipment connection, the mark in the tunnels MP2MP Label and the Tag Packaging of broadcast domain of the ether VPN data message, the label of the wherein broadcast domain of ether VPN are used to indicate The data message belongs to the broadcast domain of ether VPN, and the mark of the broadcast domain of at least one ether VPN of bearer network connection Label are distributed by the root node in the tunnels MP2MP.

In conjunction with second of possible realization method of the 5th aspect, under the third possible realization method, the PE equipment For the root node in the tunnels MP2MP, which further includes：Distribution module, the receiving module also receive in the bearer network extremely At least one third route messages that each PE equipment in few 2nd PE equipment is sent, the third route messages carry hair Give the mark of the broadcast domain for the ether VPN that the 2nd PE equipment of the third route messages connects；The distribution module be this at least one The broadcast domain of the ether VPN of each PE equipment connection in a 2nd PE equipment distributes label；The sending module also to this at least One the 2nd PE equipment sends the 4th route messages, the 4th route messages carry the tree root in the tunnels MP2MP identification information, The mark of the broadcast domain of the ether VPN of each PE equipment connection at least one 2nd PE equipment and for this is at least one The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in the 2nd PE equipment of PE.

It, should under the 4th kind of possible realization method in conjunction with the 5th aspect or a kind of any of the above described possible realization method PE equipment is sealed as the label in vpn label, the tunnels MP2MP as outer layer label using the label of the ES of PE equipment connection Fill the data message.

It, should under the 5th kind of possible realization method in conjunction with the 5th aspect or a kind of any of the above described possible realization method Data message is broadcast, unknown unicast or multicast BUM messages.

6th aspect, provides a kind of PE equipment, including：Receiving module passes through for receiving the first PE equipment in ether VPN Bearer network in the tunnels MP2MP send data message, wherein the data message using the first PE connections ES label With the Tag Packaging in the tunnels MP2MP, the first PE equipment and the PE equipment that the PE equipment is the bearer network, bearer network connection At least one ES in each ES be connected between a CE equipment and multiple PE equipment of the bearer network, at least one ES In the label of each ES be to be distributed by the root node in the tunnels MP2MP；Decapsulation module, for decapsulating the datagram Text obtains the label of the label and the tunnels MP2MP of the ES of the first PE equipment connection；Determining module, for according to this first The label of the ES of PE equipment connection determines whether to send the data on the ES that the PE equipment connects with the label in the tunnels MP2MP Message.

In conjunction with the 6th aspect, under the first possible realization method, which connects according to the first PE equipment Label and the label in the tunnels MP2MP of ES determine the mark of ES that the first PE equipment connects, and by comparing this The mark for the ES that the mark of the ES of one PE equipment connection is connect with the PE equipment, it is determined whether on the ES being connect with the PE equipment The data message is sent, wherein the PE equipment further includes：Sending module, the mark of the ES for connect in the first PE equipment and The PE equipment connection ES mark it is identical when, do not send the data message on the ES being connect with the PE equipment, this first When the mark of the ES of PE equipment connection is different from the mark of ES that the PE equipment connects, sent on the ES being connect with the PE equipment The data message.

The possible realization method of any one of the first possible realization method in conjunction with the 6th aspect or the 6th aspect, Under second of possible realization method, the first PE equipment is the root node in the tunnels MP2MP, which further includes：Hair Module is sent, for sending the first route messages in the bearer network, which carries the ES's of PE equipment connection Mark；The receiving module also receives the secondary route message of the first PE equipment transmission, which carries the MP2MP The mark of the ES of each PE equipment connection in the identification information of the tree root in tunnel, at least one 2nd PE equipment of the bearer network And the label of the ES distribution for each PE equipment connection at least one 2nd PE equipment.

It, should under the third possible realization method in conjunction with the 6th aspect or a kind of any of the above described possible realization method Data message further includes the label of the broadcast domain of ether VPN, is used to indicate the broadcast that the data message belongs to ether VPN Domain, and the label of the broadcast domain of at least one ether VPN of bearer network connection is distributed by the root node in the tunnels MP2MP 's.

In conjunction with the third possible realization method of the 6th aspect, under the 4th kind of possible realization method, the first PE Equipment is the root node in the tunnels MP2MP, which further includes：Sending module, for sending third road on the bearer network By message, which carries the mark of the broadcast domain of the ether VPN of PE equipment connection；The receiving module also receives First PE equipment sends the 4th route messages, and the 4th route messages carry the identification information of the tree root in the tunnels MP2MP, are somebody's turn to do In the 2nd PE equipment of at least one of bearer network each PE equipment connection ether VPN broadcast domain mark and for should The label of the broadcast domain distribution of the ether VPN of each PE equipment connection at least one 2nd PE equipment.

In conjunction with the 6th aspect or a kind of any of the above described possible realization method, under the 5th kind of possible realization method, It is characterized in that, which is broadcast, unknown unicast or multicast BUM messages.

7th aspect, provides a kind of PE equipment, including：Receiving module, for receiving at least one 2nd PE equipment The first route messages that each PE equipment is sent, first route messages carry the 2nd PE equipment for sending first route messages The mark of the ES of connection, the PE equipment and at least one 2nd PE equipment are the PE equipment of the bearer network of ether VPN, the carrying The each ES netted at least one ES of connection is connected between a CE equipment and multiple PE equipment of the bearer network；Distribute mould Block, for distributing label for the ES of each PE equipment connection at least one 2nd PE equipment；Sending module is used for this At least one 2nd PE equipment sends secondary route message, which carries the tunnel of the MP2MP of the bearer network In the identification information of tree root, at least one 2nd PE equipment each PE equipment connection ES mark and for this at least one The label of the ES distribution of each PE equipment connection in a 2nd PE equipment, the PE equipment are the root node in the tunnels MP2MP.

In conjunction with the 7th aspect, under the first possible realization method, which also receives at least one 2nd PE At least one third route messages that each PE equipment in equipment is sent, which, which carries, sends third routing The mark of the broadcast domain of the ether VPN of the 2nd PE equipment connection of message；The distribution module is also that at least one 2nd PE is set The broadcast domain of the ether VPN of each PE equipment connection in standby distributes label；The sending module is also at least one 2nd PE Equipment sends the 4th route messages, and the 4th route messages carry in the mark of the PE equipment, at least one 2nd PE equipment Each PE equipment connection ether VPN broadcast domain mark and be each PE in the 2nd PE equipment of at least one PE The label of the broadcast domain distribution of the ether VPN of equipment connection.

Eighth aspect provides a kind of sending module, should for sending the first route messages in the bearer network of ether VPN First route messages carry the mark of the ES of PE equipment connection, each ES connections at least one ES of bearer network connection Between a CE equipment and multiple PE equipment of the bearer network；Receiving module, second for receiving the transmission of the first PE equipment Route messages, the secondary route message carry the identification information of the tree root in the tunnels MP2MP of the bearer network, at least one 2nd PE In equipment each PE equipment connection ES mark and be at least one 2nd PE equipment each PE equipment connection ES distribution label, wherein the first PE equipment and at least one 2nd PE equipment are that the PE of the bearer network of ether VPN is set Standby, the first PE equipment is the root node in the tunnels MP2MP.

In conjunction with eighth aspect, under the first possible realization method, which also sends on the bearer network Three route messages, the third route messages carry the mark of the ether VPN broadcast domains of PE equipment connection；The receiving module also connects Receive the first PE equipment send the 4th route messages, the 4th route messages carry the tree root in the tunnels MP2MP identification information, In the 2nd PE equipment of at least one of the bearer network each PE equipment connection ether VPN broadcast domain mark and be The label of the broadcast domain distribution of the ether VPN of each PE equipment connection at least one 2nd PE equipment.

Based on the above-mentioned technical proposal, PE equipment may be used the tunnels MP2MP root node distribution ES Tag Packaging from The data message that customer edge devices receive, and sent datagram by the tunnels MP2MP, other PE equipment receive the data After message, according to the label forwarding of the ES in the data message data message.Since other PE equipment can be according to the ES's Label determines whether the data message comes from same ES, and the data message is given in such manner, it is possible to avoid postbacking data message forwarding Customer edge devices, to solve the problems, such as the data message detour occurred in customer side transmission.

Description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the present invention Example is applied, it for those of ordinary skill in the art, without having to pay creative labor, can also be attached according to these Figure obtains other attached drawings.

Fig. 1 is the schematic diagram of the ether VPN of the embodiment of the present invention.

Fig. 2 is the schematic flow chart of the method for data message transmission according to an embodiment of the invention.

Fig. 3 is the schematic flow chart of the method for data message transmission according to another embodiment of the present invention.

Fig. 4 is the schematic flow chart of the method for data message transmission according to another embodiment of the present invention.

Fig. 5 is the schematic flow chart of the method for data message transmission according to another embodiment of the present invention.

Fig. 6 is the system architecture diagram of the ether VPN of another embodiment of the present invention.

Fig. 7 is the schematic flow chart of the method for data message transmission according to still another embodiment of the invention.

Fig. 8 is the schematic flow chart of the method for data message transmission according to still another embodiment of the invention.

Fig. 9 is the structural schematic diagram of PE equipment provided by one embodiment of the present invention.

Figure 10 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Figure 11 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Figure 12 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Figure 13 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Figure 14 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Figure 15 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Figure 16 is the structural schematic diagram for the PE equipment that another embodiment of the present invention provides.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiment is a part of the embodiment of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained without making creative work Example is applied, the scope of protection of the invention should be all belonged to.

Fig. 1 is the schematic architectural diagram of the ether VPN100 of the embodiment of the present invention.

The embodiment ether VPN100 of Fig. 1 is illustrated for being EVPN-A.It is located at the client of different geographical in EVPN-A Website is communicated by bearer network 110.Bearer network 110 for example can be IP/MPLS bearer networks.For example, bearer network 110 may include PE equipment 110a, PE equipment 110b, PE equipment 110c, PE equipment 110d and intermediary network device 110e.EVPN-A is in each PE A corresponding EVI (EVPN Instance) in equipment.The customer rs site a of EVPN-A includes CE equipment 120a and customer equipment The customer rs site b of 130a, EVPN-A include CE equipment 120b and customer equipment 130b.

For ease of description, several PE equipment of several customer rs sites and bearer network of an EVPN are illustrated only.This hair Bright embodiment is to the PE equipment in the number and bearer network of the number of the EVPN in communication system, the customer rs site of each EVPN Number be not construed as limiting.

As shown in Figure 1, customer equipment 130a is connected with CE equipment 120a.Each customer equipment is with can corresponding to a MAC Location.CE equipment 120a is connected to PE equipment 110a and PE equipment 110b by ES (Ethernet Segment, ethernet segment) 1. CE equipment 120b is connected to PE equipment 110c and PE equipment 110d by ES2.ES1 and ES2 also referred to as more returns link, i.e. a CE Equipment is connected to multiple PE equipment by ES.

It is communicated in this way, the customer equipment of different geographical can be realized by above-mentioned bearer network.PE equipment in bearer network is used In local MAC (Media Access Control, the medium access control) address with distant client website of study.For example, PE Equipment completes the mac learning of local client devices in data plane, and exchanges MAC routings by BGP signalings to complete distal end visitor The mac learning of family equipment.In addition, PE equipment is additionally operable to carry out message forwarding.For example, the report that will be received from native client website Text is forwarded to local other client's endpoints and other PE equipment, and the message received from other PE equipment is forwarded to local Customer rs site.

In above-mentioned communication system, BUM flows can be carried using multicast tree (for example, the tunnels MP2MP).Such as Fig. 1 institutes Show, PE equipment 110a is the root node in the tunnels M2MP, and PE equipment 110d, PE equipment 110c and PE equipment 110b is the tunnels M2MP Leaf node.For example, the BUM flows that customer equipment 130a is sent out can be by above-mentioned M2MP tunnel transmissions to customer equipment 130b.Equally, the BUM flows that the customer equipment of the customer rs site connected on leaf node is sent out can also pass through above-mentioned M2MP tunnels Road is transferred to the customer equipment of the customer rs site of root node or the connection of other leaf nodes.

In above-mentioned communication system, customer equipment 130a is connected to CE equipment 120a, CE equipment 120a by returning link more (for example, ES1) is connected respectively to the chain between PE equipment 110a and PE equipment 110b namely CE equipment 120a and PE equipment 110a Multilink bundling between road and CE equipment 120a and PE equipment 110b is at an ether TRUNK, also referred to as ES, i.e., different PE The set of link between equipment and same CE equipment, and the set of these links can be indicated by the same mark, example Such as, it is identified with ethernet segment mark (Ethernet Segment Identifier, ESI).At this moment, CE equipment 120a is sent BUM flows can be forwarded via PE equipment 110a, can also be forwarded via PE equipment 110b, this depends on ether TRUNK hair The algorithm of physical link is chosen when sending data message.In the transmission process of above-mentioned BUM flows, it is assumed that BUM flows are from CE equipment 120a is sent to PE equipment 110a, PE equipment 110a needs and the BUM flows is forwarded in this EVPN networks (for example, EVPN-A) Other PE equipment, for example, PE equipment 110b, PE equipment 110c and PE equipment 110d.But if at this moment not to PE equipment The forwarding of 110b carries out any control, which may be forwarded back to local CE equipment 120a, in customer side shape again At triangle loop, the detour of BUM flows is caused to transmit.

In order to solve the above-mentioned technical problem, the scheme of the global label of distribution may be used, i.e., all PE in bearer network are set The standby label (also referred to as ESI labels) that can apply for ES to a central controlled label manager (Label Manager) or VPN label, then label is distributed to all PE equipment by label manager, needed in PE equipment for ESI labels or VPN label it is pre- Stay Label space.However, such scheme not only needs a central controlled label manager, it is also necessary in all PE equipment It is upper to retain identical Label space, it can additionally increase additional signaling burden.In addition, for used by P2MP tunneling techniques The scheme that vpn label is explained in the root node Label space that outer layer P2MP tunnel labels are identified, for the tunnels MP2MP skill For art and it is not suitable for.Since the tunnels MP2MP are two-way, data message may be sent from root node, it is also possible to from non-root section Point is sent, and outlet (Egress) PE equipment can not identify which entrance data message is originated from according to outer layer MP2MP tunnel labels (Ingress) PE equipment, and then can not explain vpn label in entry PE device label spatial dimension.

Therefore, in order to solve the above-mentioned technical problem, an embodiment of the present invention provides data message transmissions in a kind of ether VPN Method and PE equipment can avoid forming three in customer side when carrying data message (BUM messages) using MP2MP tunnels Square ring road.

Fig. 2 is the schematic flow chart of the method for data message transmission according to an embodiment of the invention.The side of Fig. 2 Method can be executed by the PE equipment of Fig. 1.

210, the first PE equipment receives the number that CE equipment is sent by the ES being connected between the first PE equipment and CE equipment According to message, wherein the first PE equipment is the PE equipment of the bearer network of ether VPN.

For example, an ether VPN may include multiple customer rs sites positioned at different geographical, each customer rs site can be by Customer equipment and CE equipment composition.Customer equipment can be communicated by CE equipment with the PE equipment in bearer network.Different PE equipment Link between same CE equipment can be bundled into a TRUNK, also referred to as ES.What CE equipment can send customer equipment Data message is transmitted to PE equipment by ES.

ES is also referred to as ether VPN network more and returns link, returns CE equipment and carrying of the link connection in ether VPN network more Between multiple PE of net, wherein the first PE equipment is one of multiple PE.

For example, data message can be broadcast, unknown unicast or multicast BUM messages or BUM flows.

220, the first PE equipment uses the label in the tunnels MP2MP in the label and bearer network of the ES of the first PE equipment connection Encapsulation of data message, wherein each ES at least one ES of bearer network connection is connected to a CE equipment and bearer network Between multiple PE equipment, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP.

For example, the root node in the tunnels MP2MP, which can be unified for the different ES in ether VPN, distributes corresponding label, and The label of different ES is sent to each PE equipment of bearer network.For example, can be stored in each PE equipment the mark of all ES with Root node is the correspondence or mapping relations of the label of ES distribution.The mark of ES is known as ESI, and the label of ES is referred to as ESI labels.

230, the first PE equipment is sent datagram by the tunnels MP2MP.

Specifically, CE equipment of the customer equipment by local, and pass through the ES between CE equipment and the first PE equipment, to Bearer network sends datagram.First PE equipment in the data message sent on receiving the ES being connect with the first PE equipment, The root node in the tunnels MP2MP can be determined according to the tunnel label in the tunnels MP2MP to be used, and determine the root in the tunnels MP2MP Node is the label of ES distribution.First PE equipment uses the Tag Packaging data message of the label and the tunnels MP2MP of ES, and leads to The tunnels MP2MP are crossed to send datagram.2nd PE equipment decapsulates the data message and obtains ES after receiving the data message Label and the tunnels MP2MP label, and according to the label of the ES determine send the data message the first PE equipment whether with 2nd PE equipment is connected to identical ES.In other words, according to the method for the embodiment of the present invention, (it sets outlet PE equipment to CE It is standby to send datagram) it can be according to the label of the tunnels the MP2MP root node in data message, in the Label space model of root node It encloses interior explanation ESI labels, and then determines the corresponding entry PE equipment of the ESI labels (it receives the data message that CE equipment is sent) Whether with the outlet PE equipment it is connected to identical ES, can avoid being connected in entry PE equipment and outlet EP equipment in this way Data message is forwarded back to customer side by the ES in the case of one ES, and then avoids forming triangle loop in customer side.

According to an embodiment of the invention, the Tag Packaging of the ES of the root node distribution in the tunnels MP2MP may be used in PE equipment The data message received from CE equipment, and sent datagram by the tunnels MP2MP, other PE equipment receive the data message Afterwards, according to the label forwarding of the ES in the data message data message.Since other PE equipment can be according to the label of the ES Determine whether the data message comes from same ES, in such manner, it is possible to avoid postbacking data message forwarding into the CE for giving the data message Equipment, to solve the problems, such as triangle loop occur in customer side.

In addition, the embodiment of the present invention is compared with the scheme of this global label of distribution, it is not necessary that central controlled mark is arranged Manager is signed, and signaling overheads can be reduced, saves Label space.

For convenience, the embodiment of the present invention is described by taking any ether VPN in communication system as an example, ability Field technique personnel should be understood that bearer network can be multiple ether VPN transmitting messages.In addition, the first PE equipment and the 2nd PE Equipment is any two PE equipment in bearer network, it will be understood by those skilled in the art that may exist more in bearer network PE equipment or other middle PE equipment.In addition, for convenience, the embodiment of the present invention is to be with a tunnel MP2MP Example is described, it will be understood by those skilled in the art that multiple tunnels MP2MP can be established in bearer network simultaneously, and profit Different tunnels is distinguished with the label in the tunnels MP2MP.

In 220, the first PE equipment using ES label as vpn label, the tunnels MP2MP label as outer layer mark Sealing fills data message.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP, and the method for Fig. 1 further includes： The first route messages that each PE equipment at least one 2nd PE equipment of first PE equipment reception bearer network is sent, first Route messages carry the mark of the ES for the 2nd PE equipment connection for sending the first route messages；First PE equipment is at least one the The ES of each PE equipment connection in two PE equipment distributes label；First PE equipment sends second at least one 2nd PE equipment Route messages, secondary route message carry each of the identification information of the tree root in the tunnels MP2MP, at least one 2nd PE equipment The mark of the ES of PE equipment connection and the label of the ES distribution connected for each PE equipment at least one 2nd PE equipment.

Specifically, the PE equipment of the root node as the tunnels MP2MP can disappear according to the routing that each PE equipment is issued The ESI carried in breath determines whole ES in the tunnels MP2MP belonging to root node.Root node is that whole ES distributes ethernet segment mark ES and the ESI label of ESI labels, bearer connection correspond.Leaf node PE equipment publication of the root node into the tunnels MP2MP Routing iinformation, the routing iinformation may include the mark letter of the tree root in ethernet segment mark ESI, ESI label and the tunnels MP2MP Breath.In other words, root node can be by the identification information of the tree root in the tunnel of MP2MP, the binding relationship of ESI and ESI labels Notify each PE equipment.In embodiments of the present invention, the whole ES for the tunnels MP2MP being unified for by root node distribute label, in this way To avoid using when the tunnels MP2MP carrying BUM messages triangle loop can be formed in customer side.

For example, above-mentioned first route messages can be dedicated route messages, conventional route messages can also be used to take Mark with ES.For example, EVPN protocol definitions return the ALL-Active pattern scenes of access under, PE equipment can be issued Per ESI Ethernet A-D Route (each ESI ether A-D routings) type route messages, the route messages can carry The ESI for the local ES that PE is connected, MP2MP root nodes can utilize the routing iinformation to find to return link pair in EVPN networks more The ESI answered has found the ES in EVPN networks.

For example, each PE equipment in bearer network can be by the first PE equipment of route messages in receiving bearer network When the first route messages that each PE is sent, it can be that the ES of each PE connections distributes label, specifically, first can be directed to The ESI for the ES that route messages carry distributes an ESI label.In other words, the root node in the tunnels MP2MP can be each ES points With an ESI label.

Can be that each ESI distribution one is only local for example, after MP2MP root nodes find the ESI in EVPN networks Label, and ESI and corresponding ESI labels are distributed to other PE equipment.Above-mentioned secondary route message can be dedicated routing Message can also use conventional route messages to carry the mark of ES, for example, one can be redefined based on ESI labels newly EVPN NLRI (Network Layer Reachability Information, Network Layer Reachability message) type road By message, for issuing the label of ES, or an extension routing property is newly defined based on ESI labels, and carry EVPN's The conventional routing comprising multicast ether label routing (Inclusive Multicast Ethernet Tag Route) type disappears It is issued in breath.

When issuing ESI labels, the mark of label information and MP2MP root nodes or MP2MP tree roots can be bound.Example Such as, when ESI labels are distributed by node (when a root node is only the tree root of a MP2MP), at this point it is possible to by root section The mark of point is bound as tree root information, ESI labels and the mark of MP2MP root nodes, when ESI labels are distributed by MP2MP trees (i.e. when a root node is the tree root of multiple MP2MP), ESI labels and the mark of MP2MP tree roots are bound.

Optionally, as another embodiment, the method for Fig. 2 further includes：First PE equipment is using the connection of the first PE equipment The Tag Packaging data message of the broadcast domain of the label of ES, the label in the tunnels MP2MP and ether VPN, the wherein broadcast of ether VPN The label in domain is used to indicate the broadcast domain that data message belongs to ether VPN, and at least one ether VPN of bearer network connection The label of broadcast domain is distributed by the root node in the tunnels MP2MP.

For example, the first PE equipment uses the label of the broadcast domain of ether VPN as middle layer Tag Packaging data message.By Multiple broadcast domains there may be ether VPN in communication system can be in number in order to distinguish the data message of different broadcast domains According to the label for the broadcast domain for further encapsulating ether VPN in message, for example, the label of the broadcast domain of ether VPN can be used as number According to the middle layer label of message, so as to the 2nd PE equipment according to the label of the broadcast domain of ether VPN by data message forwarding extremely The broadcast domain of corresponding ether VPN.For example, when the public identical MP2MP trees of multiple EVPN carry BUM messages, need to encapsulate The label of the broadcast domain of ether VPN is referred to as EVPN BUM flow labels, being capable of area to export (Egress) PE equipment The broadcast domain for dividing the BUM messages to belong to which EVPN.

Optionally, as another embodiment, the method for Fig. 2 further includes：First PE equipment is the root node in the tunnels MP2MP, Method further includes：Each PE equipment that first PE equipment receives in the 2nd PE equipment of at least one of bearer network is sent at least One third route messages, third route messages carry the ether VPN's for the 2nd PE equipment connection for sending third route messages The mark of broadcast domain；First PE equipment is the broadcast of the ether VPN of each PE equipment connection at least one 2nd PE equipment Label is distributed in domain；First PE equipment sends the 4th route messages at least one 2nd PE equipment, and the 4th route messages carry The broadcast of the ether VPN of each PE equipment connection in the identification information of the tree root in the tunnels MP2MP, at least one 2nd PE equipment The mark in domain and in the 2nd PE equipment of at least one PE each PE equipment connection ether VPN broadcast domain distribution mark Label.

The distribution of the mode of distribution and the publication of the VPN label of the embodiment of the present invention and above-mentioned ESI labels and publication Mode is similar, and to avoid repeating, details are not described herein.

Optionally, as another embodiment, the method for Fig. 2 further includes：First PE equipment receives the 2nd PE equipment in MP2MP The second data message transmitted on tunnel, wherein label and MP2MP of second data message using the ES of the 2nd PE equipment connection The Tag Packaging in tunnel；First PE equipment decapsulate the second data message, obtain the 2nd PE equipment connection ES label and The label in the tunnels MP2MP；The label for the ES that first PE equipment is connected according to the 2nd PE equipment and the label in the tunnels MP2MP determine It is no to send the second data message on the ES of the first PE equipment connection.

Divide specifically, the first PE equipment can be determined according to the label in the tunnels MP2MP obtained in the second data message PE equipment with label, the i.e. root node in the tunnels MP2MP, so that it is determined that the Label space of the root node distribution in the tunnels MP2MP.So Afterwards, the tunnels label lookup MP2MP for the ES that the first PE equipment is connected according to the 2nd PE equipment obtained in the second data message The Label space of root node distribution is finally set according to the 2nd PE with determining the corresponding ES of label of the ES of the 2nd PE equipment connection Whether standby connection ES is identical as the ES of the first PE equipment connection to determine whether to send the second number on the ES that the first PE equipment connects According to message.If the ES that the ES of the first PE equipment connection is connect with the 2nd PE equipment is the same ES, the first PE equipment does not exist The second data message is sent on the ES of first PE equipment connection, if what the ES of the first PE equipment connection was connect with the 2nd PE equipment ES is different ES, then the first PE equipment sends the second data message on the ES that the first PE equipment connects.Further, not In the case that same ether VPN shares the tunnels MP2MP, the first PE equipment can also be according to the ether VPN carried in data message The label of broadcast domain determine the second data message be sent to the broadcast of local that ether VPN corresponding with the label Domain.

According to an embodiment of the invention, in 230, the label of ES that the first PE equipment is connected according to the 2nd PE equipment and The label in the tunnels MP2MP determines the mark of the ES of the 2nd PE equipment connection；By comparing the mark of the ES of the 2nd PE equipment connection The mark for the ES being connect with the first PE equipment, it is determined whether the second data message is sent on the ES of the first PE equipment connection, The method method of middle Fig. 2 further includes：In the mark phase for the ES that the mark of the ES of the 2nd PE equipment connection is connect with the first PE equipment Meanwhile the first PE equipment not the first PE equipment connection ES on send the second data message, the 2nd PE equipment connection ES Mark it is different from the mark of ES that the first PE equipment connects when, the first PE equipment sends the on the ES that the first PE equipment connects Two data messages.

For example, the first PE equipment can the ES for the root node distribution for locally preserving MP2MP tunnels label (for example, ESI Label) mapping table or mapping table with the mark (for example, ESI) of ES.First PE equipment connects from the 2nd PE equipment When receiving BUM messages, first it can determine that the PE of distribution label is set according to the label in the tunnels MP2MP obtained in the second data message It is standby, i.e. the root node in the tunnels MP2MP, so that it is determined that the Label space of the root node distribution in the tunnels MP2MP.Then, the first PE is set The root node distribution in the tunnels label lookup MP2MP of the standby ES according to the 2nd PE equipment obtained in the second data message connection Label space searches above-mentioned mapping table or mapping table, to determine that the label of the ES of the 2nd PE equipment connection corresponds to ES mark, finally connected according to the 2nd PE equipment the ES that is connect with the first PE equipment of mark of ES identify whether it is identical true It is fixed whether on the ES of the first PE equipment connection to send the second data message.If the mark and the of the ES of the first PE equipment connection The mark of the ES of two PE equipment connection is identical, then the first PE equipment does not send the second datagram on the ES of the first PE equipment connection Text, if the mark of the ES of the first PE equipment connection is different from the mark of ES that the 2nd PE equipment connects, the first PE equipment exists The second data message is sent on the ES of first PE equipment connection.

Fig. 3 is the schematic flow chart of the method for data message transmission according to another embodiment of the present invention.The side of Fig. 3 Method can be executed by the PE equipment of Fig. 1.The method of Fig. 3 is corresponding with the method for Fig. 2, suitably omits detailed description herein.

310, the 2nd PE equipment receives what the first PE equipment was sent by the tunnels MP2MP in the bearer network in ether VPN Data message, wherein data message are using the Tag Packaging of the label and the tunnels MP2MP of the ES of the first PE connections, the first PE equipment With the PE equipment that the 2nd PE equipment is bearer network, each ES at least one ES that bearer network connects is connected to a CE equipment Between multiple PE equipment of bearer network, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP 's.

320, the 2nd PE equipment decapsulates data message, obtains the label and the tunnels MP2MP of the ES of the first PE equipment connection Label.

330, the label of ES and the label in the tunnels MP2MP that the 2nd PE equipment is connected according to the first PE equipment determine whether It sends datagram on the ES of 2nd PE equipment connection.

Specifically, the 2nd PE equipment can determine distribution mark according to the label in the tunnels MP2MP obtained in data message The PE equipment of label, the i.e. root node in the tunnels MP2MP, so that it is determined that the Label space of the root node distribution in the tunnels MP2MP.Then, 2nd PE equipment is divided according to the root node in the tunnels label lookup MP2MP of the ES of the first PE equipment connection obtained in data message The Label space matched finally connects ES to determine the corresponding ES of label of the ES of the first PE equipment connection according to the first PE equipment Whether identical determine whether to send datagram on the ES that the 2nd PE equipment connects with the ES of the 2nd PE equipment connection.If the The ES that the ES of two PE equipment connection is connect with the first PE equipment is the same ES, then the 2nd PE equipment is not connected in the 2nd PE equipment ES on send datagram, if the ES that ES and the first PE equipment of the connection of the 2nd PE equipment connect is different ES, the Two PE equipment send datagram on the ES that the first PE equipment connects.Further, MP2MP is shared in different ether VPN In the case of tunnel, the 2nd PE equipment can also be determined according to the label of the broadcast domain of the ether VPN carried in data message will The data message is sent to the broadcast domain of local that ether VPN corresponding with the label.

According to an embodiment of the invention, in 320, the 2nd PE equipment is true according to the label of ES and the label in the tunnels MP2MP Determine the mark of the corresponding ES of label of ES, and the ES being connect with the 2nd PE equipment by comparing the mark of the corresponding ES of label of ES Mark, it is determined whether send datagram on the ES being connect with the 2nd PE equipment.

Optionally, as another embodiment, the method for Fig. 3 further includes：In the mark and second of the corresponding ES of the label of ES When the mark of the ES of PE equipment connection is identical, the 2nd PE equipment does not send datagram on the ES being connect with the 2nd PE equipment； The corresponding ES of the label of ES mark it is different from the mark of ES that the 2nd PE equipment connects when, the 2nd PE equipment with the 2nd PE It sends datagram on the ES of equipment connection.

For example, the 2nd PE equipment can the ES for the root node distribution for locally preserving MP2MP tunnels label (for example, ESI Label) mapping table or mapping table with the mark (for example, ESI) of ES.2nd PE equipment is received in the 2nd PE equipment When to BUM messages, the PE equipment of distribution label can be first determined according to the label in the tunnels MP2MP obtained in data message, i.e., The root node in the tunnels MP2MP, so that it is determined that the Label space of the root node distribution in the tunnels MP2MP.Then, the 2nd PE equipment according to The Label space of the root node distribution in the tunnels label lookup MP2MP of the ES of the first PE equipment connection obtained in data message, Above-mentioned mapping table or mapping table are searched, to determine the mark of the corresponding ES of label of the ES of the first PE equipment connection Know, the ES that is connect with the 2nd PE equipment of mark of ES is finally connected according to the first PE equipment and identifies whether identical to determine whether It sends datagram on the ES of 2nd PE equipment connection.If the mark of the ES of the 2nd PE equipment connection is connect with the first PE equipment ES mark it is identical, then the 2nd PE equipment not the 2nd PE equipment connection ES on send datagram, if the 2nd PE is set The mark of the ES of standby connection is different from the mark of ES that the first PE equipment connects, then the 2nd PE equipment is connected in the 2nd PE equipment It sends datagram on ES.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP, and the method for Fig. 3 further includes： 2nd PE equipment sends the first route messages in bearer network, and the first route messages carry the mark of the ES of the 2nd PE equipment connection Know；2nd PE equipment receives the secondary route message that the first PE equipment is sent, and secondary route message carries the tree root in the tunnels MP2MP Identification information, bearer network at least one 2nd PE equipment in each PE equipment connection ES mark and be at least one The label of the ES distribution of each PE equipment connection in a 2nd PE equipment.

Optionally, as another embodiment, data message further includes the label of the broadcast domain of ether VPN, is used to indicate number Belong to the broadcast domain of ether VPN according to message, and the label of the broadcast domain of at least one ether VPN of bearer network connection be by The root node distribution in the tunnels MP2MP.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP, and the method for Fig. 3 further includes： 2nd PE equipment sends third route messages on bearer network, and third route messages carry the ether VPN of the 2nd PE equipment connection Broadcast domain mark；2nd PE equipment receives the first PE equipment and sends the 4th route messages, and the 4th route messages carry MP2MP The ether VPN of each PE equipment connection in the 2nd PE equipment of at least one of the identification information of the tree root in tunnel, bearer network Broadcast domain mark and at least one 2nd PE equipment each PE equipment connection ether VPN broadcast domain distribution Label.

Optionally, as another embodiment, the method for Fig. 3 further includes：2nd PE equipment receives the connection of the 2nd PE equipment The second data message transmitted on ES；The mark of the label and the tunnels MP2MP of the ES that 2nd PE equipment is connected using the 2nd PE equipment Sealing fills the second data message；2nd PE equipment sends the second data message on the tunnels MP2MP.

According to an embodiment of the invention, data message is broadcast, unknown unicast or multicast BUM messages.

The embodiment of the present invention is described in detail below in conjunction with specific example.It should be noted that these examples are intended merely to help Those skilled in the art more fully understand the embodiment of the present invention, the range for the embodiment that is not intended to limit the present invention.

Fig. 4 is the schematic flow chart of the method for data message transmission according to another embodiment of the present invention.The side of Fig. 4 Method can be executed by the PE equipment of Fig. 1.The broadcast domain of the label and ether VPN of distribution ES in the method for Fig. 4 and the method for Fig. 2 The process of label is corresponding, suitably omits detailed description herein.

410, the first PE equipment receives the first route messages of the transmission of each PE equipment at least one 2nd PE equipment, First route messages carry the mark of the ES for the 2nd PE equipment connection for sending the first route messages, the first PE equipment and at least one A 2nd PE equipment is the PE equipment of the bearer network of ether VPN, and each ES at least one ES of bearer network connection is connected to Between one CE equipment and multiple PE equipment of bearer network.It should be understood that the mark that the first route messages can include not only ES is believed Breath can also include other and the relevant information of routing.

420, the first PE equipment is that the ES of each PE equipment connection at least one 2nd PE equipment distributes label.

430, the first PE equipment sends secondary route message at least one 2nd PE equipment, and the carrying of secondary route message is held The mark of the ES of each PE equipment connection in the identification information of the tree root in the tunnels MP2MP of contained network, at least one 2nd PE equipment The label of knowledge and the ES distribution connected for each PE equipment at least one 2nd PE equipment, the first PE equipment are MP2MP The root node in tunnel.It should be understood that secondary route message can include not only above- mentioned information, can also include other related to routing Information.

For example, the first PE equipment is in the first route messages that each PE in receiving bearer network is sent, can be every The ES of a PE connections distributes label, and specifically, the ESI that can be directed to the ES that the first route messages carry distributes an ESI mark Label.In other words, the root node in the tunnels MP2MP can be that each ES distributes an ESI label.

Optionally, as another embodiment, the method for Fig. 4 further includes：First PE equipment receives at least one 2nd PE and sets At least one third route messages that each PE equipment in standby is sent, third route messages, which carry, sends third route messages The mark of the broadcast domain of the ether VPN of 2nd PE equipment connection；First PE equipment is each of at least one 2nd PE equipment The broadcast domain of the ether VPN of PE equipment connection distributes label；First PE equipment sends the 4th tunnel at least one 2nd PE equipment By message, the 4th route messages carry the identifying of the first PE equipment, each PE equipment connection at least one 2nd PE equipment Ether VPN broadcast domain mark and in the 2nd PE equipment of at least one PE each PE equipment connection ether VPN Broadcast domain distribution label.

Fig. 5 is the schematic flow chart of the method for data message transmission according to another embodiment of the present invention.The side of Fig. 5 Method can be executed by the PE equipment of Fig. 1.The broadcast domain of the label and ether VPN of distribution ES in the method for Fig. 4 and the method for Fig. 2 The process of label is corresponding, suitably omits detailed description herein.

510, the 2nd PE equipment sends the first route messages in the bearer network of ether VPN, and the first route messages carry the Two PE equipment connection ES mark, bearer network connection at least one ES in each ES be connected to a CE equipment with carrying Between multiple PE equipment of net.

520, the 2nd PE equipment receives the secondary route message that the first PE equipment is sent, and secondary route message carries bearer network The identification information of tree root in the tunnels MP2MP, each PE equipment connection at least one 2nd PE equipment ES mark with And the label of the ES distribution for each PE equipment connection at least one 2nd PE equipment, wherein the first PE equipment and at least one A 2nd PE equipment is the PE equipment of the bearer network of ether VPN, and the first PE equipment is the root node in the tunnels MP2MP.

Optionally, as another embodiment, the method for Fig. 5 further includes：2nd PE equipment sends third road on bearer network By message, third route messages carry the mark of the ether VPN broadcast domains of the 2nd PE equipment connection；2nd PE equipment receives first PE equipment sends the 4th route messages, and the 4th route messages carry in the identification information of the tree root in the tunnels MP2MP, bearer network extremely The mark of the broadcast domain of the ether VPN of each PE equipment connection in few 2nd PE equipment and be at least one 2nd PE The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in equipment.

Fig. 6 is the system architecture diagram of the ether VPN of another embodiment of the present invention.Fig. 7 is another reality according to the present invention Apply the schematic flow chart of the method for the data message transmission of example.The embodiment of Fig. 7 is the method for Fig. 2, Fig. 3, Fig. 4 and Fig. 5 Example.The embodiment of Fig. 7 is described with reference to the system architecture diagram of Fig. 6.

As shown in fig. 6, describing the embodiment of the present invention by taking EVPN-A as an example, the bearer network of EVPN-A is set including four PE It is standby：PE1 to PE4.Assuming that PE1 is the root node in the tunnels MP2MP, PE2, PE3 and PE4 are the leaf node in the tunnels MP2MP.CE is set Standby CE1 by returning link ES1 to be connected respectively to PE1 and PE2 more, and CE equipment CE2 by returning link ES2 to be connected respectively to PE3 more And PE4.

When some PE receives BUM messages from local ES, can according to carrying BUM messages used in the tunnels MP2MP, It determines the root node in the tunnels MP2MP, then determines that the root node is the label of local ES distribution, referred to herein as ESI labels.Then, For the PE using determining ESI labels as innermost layer label, MP2MP tunnel labels encapsulate BUM messages as outermost layer label, and Other PE equipment BUM messages after encapsulation being sent in the tunnels MP2MP.

The embodiment of the present invention is unified for using the centralized upper tag method of salary distribution by the root node in the tunnels MP2MP ESI and EVPN distribute upper tag, then is explained and distributed within the scope of the Label space of MP2MP root nodes by downstream node ESI or VPN label.And MP2MP root nodes then need first to find EVPN nets before being unified for ESI or EVPN distribution upper tags The broadcast domain of ESI or ether VPN in network.

Following steps 705 to 720 are the process that PE1 had found and distributed ESI labels, and step 725 to 765 is between PE equipment Transmit the process of BUM messages.

The route messages for the carrying ESI that 705, PE1 reception PE2 are issued in bearer network.

The route messages for the carrying ESI that 710, PE1 reception PE3 are issued in bearer network.

The routing that PE1 obtains each leaf node (for example, PE2 and PE3) publication as the root node in the tunnels MP2MP disappears Breath, PE2 and PE3 issues the ESI of coupled ES by route messages in other words.Specifically, PE2 and PE3 may be used Special routing iinformation issues ESI.Alternatively, PE2 and PE3 can also use per ESI Ethernet A-D Route classes The route messages of type issue ESI.The route messages that PE2 and PE3 is sent carry the ESI of local ES.Therefore, PE1 can basis The route messages of the carrying ESI of acquisition find the ES in EVPN.

713, PE1 distribute label for the ES in EVPN.

After root node PE1 has found the ES of PE equipment connection in the tunnels MP2MP, a unique label is distributed for each ES, The ESI for being directed to each ES distributes label, hereinafter referred to as ESI labels.

For example, with reference to Fig. 6, PE1 be ES1 distribution label be 1024, be ES2 distribute label be 1025.In addition, PE1 Can also be the EVPN distribution labels for sharing the tunnels MP2MP.For EVPN distribute label method and be ES distribute ESI labels Method is similar, and details are not described herein.

ESI and corresponding ESI labels are distributed to PE2 by 715, PE1.

ESI and corresponding ESI labels are distributed to PE3 by 720, PE1.

ESI and corresponding ESI labels are distributed to leaf node PE2 and PE3 by root node PE1.Specifically, it may be used specially ESI labels are issued with routing iinformation, for example, the route messages for defining a new EVPN NLRI type issue ESI labels. Alternatively, a new extension routing property can also be defined, attribute information carrying is being included into multicast ether label road It is issued in route messages by (Inclusive Multicast Ethernet Tag Route) type.When existing in bearer network When multiple tunnels MP2MP, the ESI labels of the root node distribution in the different tunnels MP2MP belong to different Label space, different Label space is identified and distinguished between with the mark of the root node in the tunnels MP2MP or label.In this case, in publication ESI marks When label, the identification information of the root node in the label information of ES and the tunnels MP2MP or MP2MP tree roots can be bound, for example, can be with The label or mark of the label of ES and the root node in the tunnels MP2MP are bound.One tunnel MP2MP is corresponded to for a root node The case where for, the mark for marking of the root node tunnels MP2MP, the i.e. identification information of the tree root in the tunnels MP2MP can be used It can be the mark of the root node, for a case where root node corresponds to multiple tunnels MP2MP, different trees can be used The different tunnels MP2MP of the mark for marking of root.In addition, EVPN labels can also be sent to each leaf node by PE1.Each The label of the root node in the tunnels a leaf node storage MP2MP or the correspondence of mark and the label of each ES.Further, also The label of root node or the correspondence of mark and EVPN labels can be stored in each leaf node.

725, PE1 receive BUM messages from CE1.

For example, the BUM messages that customer equipment is sent are transmitted to PE1 by CE1 by ES1.

730, PE1 using ESI labels and the Tag Packaging BUM messages in the tunnels MP2MP.

The root node that the different tunnels MP2MP are stored on PE1 is the label that each ES and EVPN is distributed, that is, is directed to each The root node in the tunnels MP2MP stores the correspondence of ESI and the ESI label of each ES, and the mark and EVPN of each EVPN Label correspondence.After PE1 receives the BUM messages that CE1 forwardings are sent, MP2MP is determined according to the tunnels MP2MP to be used The root node in tunnel, and it is the ESI labels 1024 of ES1 distribution (in the present embodiment for PE1) to use the root node in the tunnels MP2MP As innermost layer label and using the label in the tunnels MP2MP as outermost layer Tag Packaging BUM messages.Furthermore it is also possible to using Root node is the label of EVPN distribution as middle layer Tag Packaging BUM messages.

735, PE2 receive the BUM messages after the encapsulation that PE1 is sent.

PE1 sends the BUM messages after encapsulation to PE2 by the tunnels MP2MP.

740, PE2 decapsulation BUM messages.

For example, the outermost layer label in PE2 decapsulation BUM messages obtains the label of the root node in the tunnels MP2MP, decapsulation Middle layer label in BUM messages obtains EVPN labels, and the innermost layer label of decapsulation BUM messages obtains ESI labels, and obtains BUM messages after to decapsulation.

745, PE2 determine whether local CE forwardings BUM messages.

The root node that the different tunnels MP2MP are stored on PE2 is the label that each ES and EVPN is distributed, that is, is directed to each The root node in the tunnels MP2MP stores the correspondence of ESI and the ESI label of each ES, and the mark and EVPN of each EVPN Label correspondence.PE2 determines that MP2MP root vertexes are PE1 according to outermost layer label (label in the tunnels MP2MP), and And the ESI labels of innermost layer are explained in the Label space of PE1 distribution, thus can determine the corresponding mark of ESI labels ES1.And ES1 is to be connected to the local ES of PE2, therefore PE2 will not forward BUM messages to the ES1.

750, PE1 forward the BUM messages after encapsulation to PE3.

PE1 sends the BUM messages after encapsulation to PE3 by the tunnels MP2MP.

755, PE3 decapsulation BUM messages.

760, PE3 determine whether local CE forwardings BUM messages.

The root node that the different tunnels MP2MP are stored on PE3 is the label that each ES and EVPN is distributed, that is, is directed to each The root node in the tunnels MP2MP stores the correspondence of ESI and the ESI label of each ES, and the mark and EVPN of each EVPN Label correspondence.For example, PE3 determines that MP2MP root vertexes are PE1 according to outermost layer label (MP2MP tunnel labels), And the ESI labels (for example, 1025) of innermost layer are explained in the Label space of PE1 distribution, thus can determine the ESI labels Corresponding mark ES2.And ES2 is the local ES for being connected to PE3, and since ES2 is different from ES1, PE3 can turn to the ES2 Send out BUM messages.

In addition, when the public identical MP2MP trees of multiple EVPN carry BUM messages, need to encapsulate EVPN labels, to go out Mouth PE equipment can distinguish the broadcast domain which EVPN BUM messages belong to.For example, PE3 can also be according to carrying in BUM messages The label of EVPN determines that the BUM messages are the BUM messages of which EVPN, and only forwards BUM messages to the EVPN.

765, PE3 forward BUM messages to CE2.

PE3 forwards the BUM messages after decapsulation to CE2 by ES2.

Based on the above-mentioned technical proposal, the embodiment of the present invention carries BUM messages using the tunnels MP2MP, by root node PE equipment Label is distributed for whole ES in the tunnels MP2MP, to avoid triangle loop is formed.The embodiment of the present invention is to be carried in EVPN networks BUM messages provide a kind of achievable mode, and need not preserve more tree state tables and forwarding table, so that it may more to realize Intercommunication between a PE equipment.

Fig. 8 is the schematic flow chart of the method for data message transmission according to still another embodiment of the invention.The reality of Fig. 8 Apply the example that example is the method for Fig. 2, Fig. 3, Fig. 4 and Fig. 5.The embodiment of Fig. 8 is described with reference to the system architecture diagram of Fig. 6.

Following steps 805 to 820 are the process that PE1 had found and distributed ESI labels, with step 705 to the step of 720 one It causes, details are not described herein.Step 825 to 850 between PE equipment transmit BUM messages process.

The route messages for the carrying ESI that 805, PE1 reception PE2 are issued in bearer network.

The route messages for the carrying ES that 810, PE1 reception PE3 are issued in bearer network.

813, PE1 distribute label for the ES in EVPN.

ESI and corresponding ESI labels are distributed to PE2 by 815, PE1.

ESI and corresponding ESI labels are distributed to PE3 by 820, PE1.

825, PE3 receive BUM messages from CE2.

830, PE3 using the ESI labels of PE1 distribution and the Tag Packaging BUM messages in the tunnels MP2MP.

For example, it is the ESI labels of ES2 distribution (in the present embodiment for PE1) that PE3, which uses the root node in the tunnels MP2MP, 1025 as innermost layer label and using MP2MP tunnel labels as outermost layer Tag Packaging BUM messages.Furthermore it is also possible to adopt Use EVPN labels as middle layer Tag Packaging BUM messages.

835, PE2, which receive PE3, sends BUM messages.

PE3 sends the BUM messages after encapsulation to PE2 by the tunnels MP2MP.

840, PE2 decapsulation BUM messages.

845, PE2 determine whether that CE1 forwards BUM messages.

The root node that the different tunnels MP2MP are stored on PE2 is the label that each ES and EVPN is distributed, that is, is directed to each The root node in the tunnels MP2MP stores the correspondence of ESI and the ESI label of each ES, and the mark and EVPN of each EVPN Label correspondence.For example, PE2 determines that MP2MP root vertexes are PE1 according to outermost layer label (MP2MP tunnel labels), And the ESI labels (for example, 1025) of innermost layer are explained in the Label space of PE1 distribution, thus can determine the ESI labels Corresponding mark ES2.And ES1 is the local ES for being connected to PE2, and since ES1 is different from ES2, PE3 can turn to the ES1 Send out BUM messages.

In addition, PE2 can also determine the BUM messages are which EVPN's according to the label of the EVPN carried in BUM messages BUM messages, and only BUM messages are forwarded to the EVPN.

850, PE2 forward the BUM messages after decapsulation to CE1.

PE2 sends the BUM messages after decapsulation to CE1 by ES1.

Described above is the methods of data message transmission according to the ... of the embodiment of the present invention, combine figure Fig. 9 to figure separately below 12 describe PE equipment according to the ... of the embodiment of the present invention.

Fig. 9 is the structural schematic diagram of PE equipment 900 provided by one embodiment of the present invention.

PE equipment 900 includes：Receiving module 910, package module 920 and sending module 930.

Receiving module 910, the number sent for receiving CE equipment by being connected to the ES of PE equipment 900 and the production of CE equipment According to message, wherein PE equipment 900 is the PE equipment of the bearer network of ether VPN.Package module 920, for using PE equipment 900 The Tag Packaging data message in the tunnels MP2MP in the label and bearer network of the ES of connection, wherein at least the one of bearer network connection Each ES in a ES is connected between a CE equipment and multiple PE equipment of bearer network, each ES's at least one ES Label is distributed by the root node in the tunnels MP2MP.Sending module 930 sends datagram for passing through the tunnels MP2MP.

According to an embodiment of the invention, package module 920 uses the label of ES as vpn label, the mark in the tunnels MP2MP Label are used as outer layer label encapsulation of data message.

Optionally, as another embodiment, the PE equipment 900 of Fig. 9 further includes：Distribution module 940.PE equipment 900 is The root node in the tunnels MP2MP, receiving module 910 also receive the hair of each PE equipment at least one 2nd PE equipment of bearer network The first route messages sent, the first route messages carry the mark of the ES for the 2nd PE equipment connection for sending the first route messages, Distribution module 940 is that the ES of each PE equipment connection at least one 2nd PE equipment distributes label；Sending module 930 also to At least one 2nd PE equipment transmission secondary route message, the identification information of the tree root in the tunnels secondary route message carrying MP2MP, In at least one 2nd PE equipment each PE equipment connection ES mark and be every at least one 2nd PE equipment The label of the ES distribution of a PE equipment connection.

Optionally, label, the MP2MP tunnels of the ES connected using PE equipment 900 as another embodiment, package module 920 The Tag Packaging data message of the label in road and the broadcast domain of ether VPN, the label of the wherein broadcast domain of ether VPN are used to indicate Data message belongs to the broadcast domain of ether VPN, and the label of the broadcast domain of at least one ether VPN of bearer network connection be by The root node distribution in the tunnels MP2MP.

Optionally, as another embodiment, the PE equipment 900 of Fig. 9 further includes：Distribution module 940.PE equipment 900 is The root node in the tunnels MP2MP, receiving module 910 also receive each PE equipment in the 2nd PE equipment of at least one of bearer network At least one third route messages sent, third route messages carry the 2nd PE equipment connection for sending third route messages The mark of the broadcast domain of ether VPN；Distribution module 940 is the ether of each PE equipment connection at least one 2nd PE equipment The broadcast domain of VPN distributes label；Sending module 930 also sends the 4th route messages, the 4th tunnel at least one 2nd PE equipment Carried by message the identification information of the tree root in MP2MP tunnels, each PE equipment connection at least one 2nd PE equipment with Too the mark of the broadcast domain of VPN and in the 2nd PE equipment of at least one PE each PE equipment connection ether VPN it is wide Broadcast the label of domain distribution.

Optionally, as another embodiment, the PE equipment 900 of Fig. 9 further includes：Decapsulation module 960 and determining module 970.Receiving module 910 also receives the second data message that the 2nd PE equipment is transmitted on the tunnels MP2MP, wherein the second datagram The Tag Packaging of the label and the tunnels MP2MP of the ES that literary grace is connected with the 2nd PE equipment；Second number of the decapsulation of decapsulation module 960 According to message, the label of the label and the tunnels MP2MP of the ES of the 2nd PE equipment connection is obtained；Determining module 970 is set according to the 2nd PE The label of ES and the label in the tunnels MP2MP of standby connection determine whether to send the second datagram on the ES that PE equipment 900 connects Text.

According to an embodiment of the invention, the label and the tunnels MP2MP for the ES that determining module 970 is connected according to the 2nd PE equipment Label determine the connection of the 2nd PE equipment ES mark, and set with PE by comparing the mark of ES of the 2nd PE equipment connection The mark of the ES of standby 900 connection, it is determined whether send the second data message, sending module 930 on the ES that PE equipment 900 connects Also when the mark of the ES of the 2nd PE equipment connection is identical as the mark of ES that PE equipment 900 connects, PE equipment 900 is not set in PE The second data message is sent on the ES of standby 900 connection, in the ES that the mark of the ES of the 2nd PE equipment connection is connect with PE equipment 900 Mark it is different when, PE equipment 900 sends the second data message on the ES that PE equipment 900 connects.

The method that the operation of the module of PE equipment 900 and function can refer to above-mentioned Fig. 2, in order to avoid repeating, herein not It repeats again.

Figure 10 is the structural schematic diagram for the PE equipment 1000 that another embodiment of the present invention provides.The PE equipment 1000 of Figure 10 is wrapped Include receiving module 1010, decapsulation module 1020 and determining module 1030.

Receiving module 1010 receives the number that the first PE equipment is sent by the tunnels MP2MP in the bearer network in ether VPN According to message, wherein data message using the label and the tunnels MP2MP of the ES of the first PE connections Tag Packaging, the first PE equipment with PE equipment 1000 be bearer network PE equipment, bearer network connection at least one ES in each ES be connected to a CE equipment with Between multiple PE equipment of bearer network, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP. Decapsulation module 1020 decapsulates data message, obtains the label of the label and the tunnels MP2MP of the ES of the first PE equipment connection.Really The label of ES and the label in the tunnels MP2MP that cover half block 1030 is connected according to the first PE equipment determine whether to connect in PE equipment 1000 It sends datagram on the ES connect.

According to an embodiment of the invention, the label and MP2MP tunnels for the ES that determining module 1030 is connected according to the first PE equipment The label in road determines the mark of the ES of the first PE equipment connection, and the mark and PE of the ES by comparing the connection of the first PE equipment The mark for the ES that equipment 1000 connects, it is determined whether send datagram on the ES being connect with PE equipment 1000, wherein PE is set Standby 1000 further include：Sending module 1040, the ES's that the mark of the ES for connecting in the first PE equipment is connect with PE equipment 800 It when identifying identical, does not send datagram on the ES being connect with PE equipment 1000, in the mark of the ES of the first PE equipment connection When different from the mark of ES that PE equipment 1000 connects, send datagram on the ES being connect with PE equipment 1000.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP, and PE equipment 1000 further includes： Sending module 1040, for sending the first route messages in bearer network, the first route messages carry the ES's of PE equipment connection Mark, wherein receiving module 1010 also receive the secondary route message of the first PE equipment transmission, and secondary route message carries MP2MP In the identification information of the tree root in tunnel, at least one 2nd PE equipment of bearer network each PE equipment connection ES mark with And the label of the ES distribution for each PE equipment connection at least one 2nd PE equipment.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP, and PE equipment 1000 further includes： Sending module 1040, for sending third route messages on bearer network, third route messages carry the ether of PE equipment connection The mark of the broadcast domain of VPN, wherein receiving module 1010 also receive the first PE equipment and send the 4th route messages, and the 4th routing disappears Each PE equipment that breath carries in the 2nd PE equipment of at least one of the identification information of the tree root in the tunnels MP2MP, bearer network connects The mark of the broadcast domain of the ether VPN connect and the ether VPN connected for each PE equipment at least one 2nd PE equipment Broadcast domain distribution label.

Optionally, as another embodiment, PE equipment 1000 further includes：Sending module 1040 and package module 1050, Middle receiving module 1010 also receives the second data message transmitted on the ES that PE equipment connects；Package module 1050 uses PE equipment The label of the ES of connection and second data message of Tag Packaging in the tunnels MP2MP；Sending module 1040 is sent on the tunnels MP2MP Second data message.

The method that the operation of the module of PE equipment 1000 and function can refer to above-mentioned Fig. 3, in order to avoid repeating, herein not It repeats again.

Figure 11 is the structural schematic diagram for the PE equipment 1100 that another embodiment of the present invention provides.The PE equipment 1100 of Figure 11 is wrapped Include receiving module 1110, distribution module 1120 and sending module 1130.

Receiving module 1110 receives the first route messages of the transmission of each PE equipment at least one 2nd PE equipment, institute State the mark that the first route messages carry the ES for the 2nd PE equipment connection for sending the first route messages, PE equipment and at least one 2nd PE equipment is the PE equipment of the bearer network of ether VPN, and each ES at least one ES of bearer network connection is connected to one Between a CE equipment and multiple PE equipment of bearer network.Distribution module 1120 is that each PE at least one 2nd PE equipment is set The ES of standby connection distributes label.Sending module 1130 sends secondary route message, secondary route at least one 2nd PE equipment Message carries each PE equipment in the identification information of the tree root in the tunnel of the MP2MP of bearer network, at least one 2nd PE equipment The mark of the ES of connection and the label of the ES distribution connected for each PE equipment at least one 2nd PE equipment, PE equipment For the root node in the tunnels MP2MP.

Optionally, as another embodiment, receiving module 1110 also receives each PE at least one 2nd PE equipment At least one third route messages that equipment is sent, third route messages carry the 2nd PE equipment company for sending third route messages The mark of the broadcast domain of the ether VPN connect；Distribution module 1120 is also that each PE equipment at least one 2nd PE equipment connects The broadcast domain of the ether VPN connect distributes label；Sending module 1130 also sends the 4th routing at least one 2nd PE equipment and disappears Breath, the 4th route messages carry the identifying of PE equipment, each PE equipment connection at least one 2nd PE equipment ether VPN Broadcast domain mark and ether VPN for each PE equipment connection in the 2nd PE equipment of at least one PE broadcast domain point The label matched.

The method that the operation of the module of PE equipment 1100 and function can refer to above-mentioned Fig. 4, in order to avoid repeating, herein not It repeats again.

Figure 12 is the structural schematic diagram for the PE equipment 1200 that another embodiment of the present invention provides.The PE equipment 1200 of Figure 12 is wrapped Include sending module 1210 and receiving module 1220.

Sending module 1210 sends the first route messages in the bearer network of ether VPN, and the first route messages carry PE and set The mark of the ES of standby connection, each ES at least one ES of bearer network connection are connected to the more of a CE equipment and bearer network Between a PE equipment.Receiving module 1220 receives the secondary route message that the first PE equipment is sent, and the carrying of secondary route message is held The mark of the ES of each PE equipment connection in the identification information of the tree root in the tunnels MP2MP of contained network, at least one 2nd PE equipment Know and the label of ES distribution for each PE equipment connection at least one 2nd PE equipment, wherein the first PE equipment and extremely The PE equipment for the bearer network that few 2nd PE equipment is ether VPN, the first PE equipment are the root node in the tunnels MP2MP.

Optionally, as another embodiment, sending module 1210 sends third route messages, third road also on bearer network The mark of the ether VPN broadcast domains of PE equipment connection is carried by message.Receiving module 1220 also receives the first PE equipment and sends the Four route messages, the 4th route messages carry the 2nd PE of at least one of the identification information of the tree root in the tunnels MP2MP, bearer network In equipment each PE equipment connection ether VPN broadcast domain mark and be each of at least one 2nd PE equipment The label of the broadcast domain distribution of the ether VPN of PE equipment connection.

The method that the operation of the module of PE equipment 1200 and function can refer to above-mentioned Fig. 5, in order to avoid repeating, herein not It repeats again.

Figure 13 is the structural schematic diagram for the PE equipment 1300 that another embodiment of the present invention provides.PE equipment 900 includes：Processing Device 1310, memory 1320, transceiver 1330 and bus 1340.

Transceiver 1330, the number sent by the ES being connected between PE equipment 1300 and CE equipment for receiving CE equipment According to message, wherein PE equipment 1300 is the PE equipment of the bearer network of ether VPN.Processor 1310 is deposited by the calling of bus 1340 The code stored in reservoir 1320, with the mark in the tunnels MP2MP in the label and bearer network of the ES connected using PE equipment 1300 Sealing fills data message, wherein each ES at least one ES of bearer network connection is connected to a CE equipment and bearer network Multiple PE equipment between, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP.Transceiver 1330, it sends datagram for passing through the tunnels MP2MP.

According to an embodiment of the invention, processor 1310 uses the label of ES as vpn label, the label in the tunnels MP2MP As outer layer label encapsulation of data message.

Optionally, as another embodiment, PE equipment 1300 is the root node in the tunnels MP2MP, and receiver 1330 also receives The first route messages that each PE equipment at least one 2nd PE equipment of bearer network is sent, the first route messages carry hair It is also at least one 2nd PE equipment to send the mark for the ES that the 2nd PE equipment of the first route messages connects, processor 1310 The ES of each PE equipment connection distributes label；Transceiver 1330 also sends secondary route message at least one 2nd PE equipment, Secondary route message carries each PE equipment in the identification information of the tree root in the tunnels MP2MP, at least one 2nd PE equipment and connects The mark of the ES connect and the label of the ES distribution connected for each PE equipment at least one 2nd PE equipment.

Optionally, label, the MP2MP tunnels of the ES connected using PE equipment 1300 as another embodiment, processor 1310 The Tag Packaging data message of the label in road and the broadcast domain of ether VPN, the label of the wherein broadcast domain of ether VPN are used to indicate Data message belongs to the broadcast domain of ether VPN, and the label of the broadcast domain of at least one ether VPN of bearer network connection be by The root node distribution in the tunnels MP2MP.

Optionally, as another embodiment, PE equipment 1300 is also received for the root node transceiver 1330 in the tunnels MP2MP and is held At least one third route messages that each PE equipment in the 2nd PE equipment of at least one of contained network is sent, third routing disappear Breath carries the mark of the broadcast domain of the ether VPN for the 2nd PE equipment connection for sending third route messages；Processor 1310 is also The broadcast domain of the ether VPN of each PE equipment connection at least one 2nd PE equipment distributes label；Transceiver 1330 also to The 4th route messages of at least one 2nd PE equipment transmission, the identification information of the tree root in the tunnels the 4th route messages carrying MP2MP, The mark of the broadcast domain of the ether VPN of each PE equipment connection at least one 2nd PE equipment and be at least one PE the The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in two PE equipment.

Optionally, as another embodiment, transceiver 1330 also receives what the 2nd PE equipment was transmitted on the tunnels MP2MP Second data message, wherein the second data message is using the label of the ES of the 2nd PE equipment connection and the label envelope in the tunnels MP2MP Dress；Processor 1310 also decapsulates the second data message, obtains the mark of the label and the tunnels MP2MP of the ES of the 2nd PE equipment connection Label, and determine whether to connect in PE equipment 1300 according to the label of ES of the 2nd PE equipment connection and the label in the tunnels MP2MP The second data message is sent on ES.

According to an embodiment of the invention, the label and the tunnels MP2MP for the ES that processor 1310 is connected according to the 2nd PE equipment Label determine the connection of the 2nd PE equipment ES mark, and set with PE by comparing the mark of ES of the 2nd PE equipment connection The mark of the ES of standby 1300 connection, it is determined whether send the second data message, transceiver on the ES that PE equipment 1300 connects 1330 also in when the identifying identical as the mark of ES that PE equipment 1300 connects of ES of the 2nd PE equipment connection, and PE equipment 1300 is not The second data message is sent on the ES that PE equipment 1300 connects, in the mark and PE equipment 1300 of the ES of the 2nd PE equipment connection When the mark of the ES of connection is different, PE equipment 1300 sends the second data message on the ES that PE equipment 1300 connects.

The method that the operation of the various pieces of PE equipment 1300 and function can refer to above-mentioned Fig. 2, in order to avoid repeating, This is repeated no more.

Figure 14 is the structural schematic diagram for the PE equipment 1400 that another embodiment of the present invention provides.The PE equipment 1400 of Figure 14 is wrapped It includes：Processor 1410, memory 1420, transceiver 1430 and bus 1440.

Transceiver 1430 receives the data that the first PE equipment is sent by the tunnels MP2MP in the bearer network in ether VPN Message, wherein data message use the Tag Packaging of the label and the tunnels MP2MP of the ES of the first PE connections, the first PE equipment and PE Equipment is the PE equipment of bearer network, and each ES at least one ES of bearer network connection is connected to a CE equipment and bearer network Multiple PE equipment between, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP.Processor 1410 decapsulation data messages, obtain the label of the label and the tunnels MP2MP of the ES of the first PE equipment connection, and according to first The label of the ES of PE equipment connection determines whether to send datagram on the ES that PE equipment connects with the label in the tunnels MP2MP.

According to an embodiment of the invention, the label and the tunnels MP2MP for the ES that processor 1410 is connected according to the first PE equipment Label determine the connection of the first PE equipment ES mark, and set with PE by comparing the mark of ES of the first PE equipment connection The mark of the ES of standby connection, it is determined whether send datagram on the ES being connect with PE equipment, wherein PE equipment further includes：It receives Hair device 1330 be additionally operable to the ES that the first PE equipment connect identify it is identical as the mark of ES that PE equipment connects when, not with PE Send datagram on the ES of equipment connection, the mark of ES that the mark of the ES of the first PE equipment connection is connect with PE equipment not Meanwhile it sending datagram on the ES being connect with PE equipment.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP.Transceiver 1430 is additionally operable to The first route messages are sent in bearer network, the first route messages carry the mark of the ES of PE equipment connection, and receive the first PE The secondary route message that equipment is sent, secondary route message carry the identification information of the tree root in the tunnels MP2MP, bearer network at least In one the 2nd PE equipment each PE equipment connection ES mark and be each PE at least one 2nd PE equipment The label of the ES distribution of equipment connection.

Optionally, as another embodiment, the first PE equipment is the root node in the tunnels MP2MP, and transceiver 1430 is additionally operable to Third route messages are sent on bearer network, third route messages carry the mark of the broadcast domain of the ether VPN of PE equipment connection, And receive the first PE equipment and send the 4th route messages, the 4th route messages carry the identification information of the tree root in the tunnels MP2MP, hold In the 2nd PE equipment of at least one of contained network each PE equipment connection ether VPN broadcast domain mark and be at least The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in one the 2nd PE equipment.

Optionally, as another embodiment, transceiver 1430 is additionally operable to transmitted on the ES for receiving the connection of PE equipment second Data message；Processor 1410 also uses the second datagram of Tag Packaging of the label and the tunnels MP2MP of the ES of PE equipment connection Text；Sending module sends the second data message on the tunnels MP2MP.

The method that the operation of the various pieces of PE equipment 1400 and function can refer to above-mentioned Fig. 3, in order to avoid repeating, This is repeated no more.

Figure 15 is the structural schematic diagram for the PE equipment 1500 that another embodiment of the present invention provides.The PE equipment 1500 of Figure 15 is wrapped It includes：Processor 1510, memory 1520, transceiver 1530 and bus 1540.

Receiver 1530 receive each PE equipment at least one 2nd PE equipment transmission the first route messages, first Route messages carry the mark of the ES for the 2nd PE equipment connection for sending the first route messages, PE equipment and at least one 2nd PE Equipment is the PE equipment of the bearer network of ether VPN, and each ES at least one ES of bearer network connection is connected to a CE and sets It is standby between multiple PE equipment of bearer network.Processor 1510 calls the code stored in memory 1520 by bus 1540, Think the ES distribution labels of each PE equipment connection at least one 2nd PE equipment.Transceiver 1530 is also at least one Two PE equipment transmission secondary route message, the identification information of the tree root in the tunnel of the MP2MP of secondary route message carrying bearer network, In at least one 2nd PE equipment each PE equipment connection ES mark and be every at least one 2nd PE equipment The label of the ES distribution of a PE equipment connection, PE equipment are the root node in the tunnels MP2MP.

Optionally, as another embodiment, each PE that transceiver 1530 also receives at least one 2nd PE equipment is set At least one third route messages that preparation is sent, third route messages carry the 2nd PE equipment connection for sending third route messages Ether VPN broadcast domain mark；Processor 1510 is also each PE equipment connection at least one 2nd PE equipment The broadcast domain of ether VPN distributes label；Transceiver 1530 also at least one 2nd PE equipment send the 4th route messages, the 4th Route messages carry the identifying of PE equipment, each PE equipment connection at least one 2nd PE equipment ether VPN broadcast The mark in domain and in the 2nd PE equipment of at least one PE each PE equipment connection ether VPN broadcast domain distribution mark Label.

Figure 16 is the structural schematic diagram for the PE equipment 1600 that another embodiment of the present invention provides.The PE equipment 1600 of Figure 16 is wrapped It includes：Processor 1610, memory 1620, transceiver 1630 and bus 1640.

Processor 1610 controls transceiver 1630 by bus 1640 and sends the first via in the bearer network of ether VPN by disappearing Breath, the first route messages carry the mark of the ES of PE equipment connection, and receive the secondary route message that the first PE equipment is sent, the Two route messages carry each PE in the identification information of the tree root in the tunnels MP2MP of bearer network, at least one 2nd PE equipment The mark of the ES of equipment connection and the label of the ES distribution connected for each PE equipment at least one 2nd PE equipment, Each ES at least one ES of middle bearer network connection is connected between a CE equipment and multiple PE equipment of bearer network, the One PE equipment and at least one 2nd PE equipment are the PE equipment of the bearer network of ether VPN, and the first PE equipment is the tunnels MP2MP Root node.

Optionally, as another embodiment, transceiver 1630 sends third route messages, third routing also on bearer network Message carries the mark of the ether VPN broadcast domains of PE equipment connection, and receives the first PE equipment the 4th route messages of transmission, and the 4th Route messages carry each PE in the 2nd PE equipment of at least one of the identification information of the tree root in the tunnels MP2MP, bearer network Equipment connection ether VPN broadcast domain mark and at least one 2nd PE equipment each PE equipment connection with The label of the broadcast domain distribution of too VPN.

The method that the operation of the module of PE equipment 1600 and function can refer to above-mentioned Fig. 5, in order to avoid repeating, herein not It repeats again.

Those of ordinary skill in the art may realize that lists described in conjunction with the examples disclosed in the embodiments of the present disclosure Member and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware With the interchangeability of software, each exemplary composition and step are generally described according to function in the above description.This A little functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.Specially Industry technical staff can use different methods to achieve the described function each specific application, but this realization is not It is considered as beyond the scope of this invention.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit It closes or communicates to connect, can be electrical, machinery or other forms.

The unit illustrated as separating component may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme 's.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.

If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey The medium of sequence code.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims

1. a kind of method of data message transmission, which is characterized in that including：

First Provider Edge PE equipment receives customer edges CE equipment and is set with the CE by being connected to the first PE equipment The data message that ethernet segment ES between standby is sent, wherein the first PE equipment is holding for ether Virtual Private Network VPN The PE equipment of contained network；

The first PE equipment is using multi-multipoint in the label and the bearer network of the ES of the first PE equipment connection Data message described in the Tag Packaging in the tunnels MP2MP, wherein each ES connections at least one ES of the bearer network connection Between a CE equipment and multiple PE equipment of the bearer network, the label of each ES at least one ES is by institute State the root node distribution in the tunnels MP2MP；

The first PE equipment sends the data message by the tunnels MP2MP.

2. according to the method described in claim 1, it is characterized in that, the first PE equipment is the root section in the tunnels MP2MP Point, the method further include：

The first PE equipment receives the first of the transmission of each PE equipment at least one 2nd PE equipment of the bearer network Route messages, first route messages carry the mark of the ES for the 2nd PE equipment connection for sending first route messages；

The first PE equipment is that the ES of each PE equipment connection at least one 2nd PE equipment distributes label；

The first PE equipment sends secondary route message at least one 2nd PE equipment, and the secondary route message is taken The ES of each PE equipment connection in the identification information of tree root with the tunnels MP2MP, at least one 2nd PE equipment Mark and at least one 2nd PE equipment each PE equipment connection ES distribution label.

3. method according to claim 1 or 2, which is characterized in that the first PE equipment is set using the first PE Data message described in the Tag Packaging in the multi-multipoint tunnels MP2MP in the label and the bearer network of the ES of standby connection, packet It includes：

The label of ES, the label in the MP2MP tunnel and described of the first PE equipment using the first PE equipment connection Data message described in the Tag Packaging of the broadcast domain of ether VPN, wherein the label of the broadcast domain of the ether VPN is used to indicate institute State the broadcast domain that data message belongs to the ether VPN, and the broadcast domain of at least one ether VPN of bearer network connection Label be to be distributed by the root node in the tunnels MP2MP.

4. according to the method described in claim 3, it is characterized in that, the first PE equipment is the root section in the tunnels MP2MP Point, the method further include：

The first PE equipment receives each PE equipment in the 2nd PE equipment of at least one of described bearer network and sends extremely Few third route messages, the third route messages carry the 2nd PE equipment connection for sending the third route messages The mark of the broadcast domain of ether VPN；

The first PE equipment is the broadcast domain of the ether VPN of each PE equipment connection at least one 2nd PE equipment Distribute label；

The first PE equipment sends the 4th route messages at least one 2nd PE equipment, and the 4th route messages are taken In the identification information of tree root with the tunnels MP2MP, at least one 2nd PE equipment each PE equipment connection with The too mark of the broadcast domain of VPN and the ether VPN for each PE equipment connection in the 2nd PE equipment of at least one PE Broadcast domain distribution label.

5. method according to claim 1 or 2, which is characterized in that the first PE equipment uses the first PE equipment Data message described in the Tag Packaging in the multi-multipoint tunnels MP2MP in the label of the ES of connection and the bearer network, including：

The first PE equipment is using the label of the ES of the first PE equipment connection as vpn label, the tunnels MP2MP Label encapsulate the data message as outer layer label.

6. method according to claim 1 or 2, which is characterized in that the data message is broadcast, unknown unicast or multicast BUM messages.

7. a kind of method of data message transmission, which is characterized in that including：

The first PE equipment of second Provider Edge PE equipment reception passes through more in the bearer network in ether Virtual Private Network VPN The data message that the tunnels point-to-multipoint MP2MP are sent, wherein the data message uses the ethernet segment of the first PE connections The Tag Packaging of the label of ES and the tunnels MP2MP, the first PE equipment and the 2nd PE equipment are the bearer network PE equipment, each ES at least one ES of bearer network connection is connected to a customer edges CE equipment and held with described Between multiple PE equipment of contained network, the label of each ES at least one ES is by the root node in the tunnels MP2MP Distribution；

The 2nd PE equipment decapsulates the data message, obtains the label of the ES of the first PE equipment connection and described The label in the tunnels MP2MP；

The label for the ES that the 2nd PE equipment is connected according to the first PE equipment and the label in the tunnels MP2MP determine It is no to send the data message on the ES of the 2nd PE equipment connection.

8. the method according to the description of claim 7 is characterized in that the 2nd PE equipment is connected according to the first PE equipment The label of ES and the label in the tunnels MP2MP determine whether to send the number on the ES connecting with the 2nd PE equipment According to message, including：

The label of ES and the label in the tunnels MP2MP that the 2nd PE equipment is connected according to the first PE equipment determine institute State the mark of the ES of the first PE equipment connection；

By comparing the mark for the ES that the mark of the ES of the first PE equipment connection is connect with the 2nd PE equipment, determination is It is no to send the data message on the ES being connect with the 2nd PE equipment,

Wherein the method further includes：

When the mark of the ES of the first PE equipment connection is identical as the mark of ES that the 2nd PE equipment connects, described the Two PE equipment do not send the data message on the ES being connect with the 2nd PE equipment；

When the mark of the ES of the first PE equipment connection is different from the mark of ES that the 2nd PE equipment connects, described the Two PE equipment send the data message on the ES being connect with the 2nd PE equipment.

9. method according to claim 7 or 8, which is characterized in that the first PE equipment is the root in the tunnels MP2MP Node, the method further include：

The 2nd PE equipment sends the first route messages in the bearer network, and first route messages carry described second The mark of the ES of PE equipment connection；

The 2nd PE equipment receives the secondary route message that the first PE equipment is sent, and the secondary route message carries institute State each PE equipment connection in the identification information of the tree root in the tunnels MP2MP, at least one 2nd PE equipment of the bearer network ES mark and at least one 2nd PE equipment each PE equipment connection ES distribution label.

10. method according to claim 7 or 8, which is characterized in that the data message further includes the ether VPN The label of broadcast domain, is used to indicate the broadcast domain that the data message belongs to the ether VPN, and bearer network connection The label of the broadcast domain of at least one ether VPN is distributed by the root node in the tunnels MP2MP.

11. according to the method described in claim 10, it is characterized in that, the first PE equipment is the root in the tunnels MP2MP Node, the method further include：

The 2nd PE equipment sends third route messages on the bearer network, and the third route messages carry described second The mark of the ether VPN broadcast domains of PE equipment connection；

The 2nd PE equipment receives the first PE equipment and sends the 4th route messages, described in the 4th route messages carry Each PE equipment connection in the 2nd PE equipment of at least one of the identification information of the tree root in the tunnels MP2MP, the bearer network Ether VPN broadcast domain mark and at least one 2nd PE equipment each PE equipment connection ether The label of the broadcast domain distribution of VPN.

12. method according to claim 7 or 8, which is characterized in that the data message is broadcast, unknown unicast or group Broadcast BUM messages.

13. a kind of method of distribution label, which is characterized in that including：

First Provider Edge PE equipment receives the first via of the transmission of each PE equipment at least one 2nd PE equipment by disappearing Breath, first route messages carry the mark of the ES for the 2nd PE equipment connection for sending first route messages, and described the One PE equipment and at least one 2nd PE equipment are the PE equipment of the bearer network of ether Virtual Private Network VPN, described to hold Each ES at least one ES of contained network connection is connected to a customer edges CE equipment and multiple PE of the bearer network are set Between standby；

The first PE equipment sends secondary route message at least one 2nd PE equipment, and the secondary route message is taken Each PE equipment in the identification information of the tree root in the tunnels MP2MP with the bearer network, at least one 2nd PE equipment The mark of the ES of connection and the label of the ES distribution connected for each PE equipment at least one 2nd PE equipment, institute State the root node that the first PE equipment is the tunnels MP2MP.

14. according to the method for claim 13, which is characterized in that further include：

The first PE equipment receives at least one third routing of the transmission of each PE equipment at least one 2nd PE equipment Message, the third route messages carry the broadcast of the ether VPN for the 2nd PE equipment connection for sending the third route messages The mark in domain；

The first PE equipment sends the 4th route messages at least one 2nd PE equipment, and the 4th route messages are taken Identifying with the first PE equipment, each PE equipment connection at least one 2nd PE equipment ether VPN it is wide Broadcast the broadcast domain point of the mark in domain and the ether VPN for each PE equipment connection in the 2nd PE equipment of at least one PE The label matched.

15. a kind of method of distribution label, which is characterized in that including：

Second Provider Edge PE equipment sends the first route messages in the bearer network of ether Virtual Private Network VPN, described First route messages carry the mark of the ES of the 2nd PE equipment connection, every at least one ES of the bearer network connection A ES is connected between a customer edges CE equipment and multiple PE equipment of the bearer network；

The 2nd PE equipment receives the secondary route message that the first PE equipment is sent, and is held described in the secondary route message carrying The mark of the ES of each PE equipment connection in the identification information of the tree root in the tunnels MP2MP of contained network, at least one 2nd PE equipment The label of knowledge and the ES distribution connected for each PE equipment at least one 2nd PE equipment, wherein first PE Equipment and at least one 2nd PE equipment are the PE equipment of the bearer network of ether Virtual Private Network VPN, the first PE Equipment is the root node in the tunnels MP2MP.

16. according to the method for claim 15, which is characterized in that the method further includes：

17. a kind of Provider Edge PE equipment, which is characterized in that including：

Receiving module passes through the ether that is connected between the PE equipment and the CE equipment for receiving customer edges CE equipment The data message that network segment ES is sent, wherein the PE equipment is the PE equipment of the bearer network of ether Virtual Private Network VPN；

Package module, for the multi-multipoint MP2MP in the label and the bearer network of the ES using PE equipment connection Data message described in the Tag Packaging in tunnel, wherein each ES at least one ES of the bearer network connection is connected to one Between a CE equipment and multiple PE equipment of the bearer network, the label of each ES at least one ES is by described The root node distribution in the tunnels MP2MP；

Sending module, for sending the data message by the tunnels MP2MP.

18. PE equipment according to claim 17, which is characterized in that the PE equipment is the root section in the tunnels MP2MP Point, the PE equipment further include：Distribution module,

The receiving module also receives the first of the transmission of each PE equipment at least one 2nd PE equipment of the bearer network Route messages, first route messages carry the mark of the ES for the 2nd PE equipment connection for sending first route messages； The distribution module is that the ES of each PE equipment connection at least one 2nd PE equipment distributes label；The transmission mould Block sends secondary route message at least one 2nd PE equipment, and the secondary route message carries the tunnels MP2MP The identification information of tree root, each PE equipment connection at least one 2nd PE equipment ES mark and be described The label of the ES distribution of each PE equipment connection at least one 2nd PE equipment.

19. according to the PE equipment of claim 17 or 18, which is characterized in that the package module uses the PE equipment Datagram described in the Tag Packaging of the broadcast domain of the label of the ES of connection, the label in the tunnels MP2MP and the ether VPN Text, wherein the label of the broadcast domain of the ether VPN is used to indicate the broadcast domain that the data message belongs to the ether VPN, And the label of the broadcast domain of at least one ether VPN of the bearer network connection is the root node point by the tunnels MP2MP Match.

20. PE equipment according to claim 19, which is characterized in that the PE equipment is the root section in the tunnels MP2MP Point, the PE equipment further include：Distribution module,

The receiving module also receives each PE equipment in the 2nd PE equipment of at least one of described bearer network and sends extremely Few third route messages, the third route messages carry the 2nd PE equipment connection for sending the third route messages The mark of the broadcast domain of ether VPN；The distribution module is each PE equipment connection at least one 2nd PE equipment Ether VPN broadcast domain distribute label；The sending module also sends the 4th routing at least one 2nd PE equipment Message, the 4th route messages carry the identification information of the tree root in the tunnels MP2MP, at least one 2nd PE equipment In each PE equipment connection ether VPN broadcast domain mark and be every in the 2nd PE equipment of at least one PE The label of the broadcast domain distribution of the ether VPN of a PE equipment connection.

21. the PE equipment according to claim 17 or 18, which is characterized in that the PE equipment is connected using the PE equipment The label of ES encapsulate the data message as outer layer label as the label in vpn label, the tunnels MP2MP.

22. the PE equipment according to claim 17 or 18, which is characterized in that the data message is broadcast, unknown unicast Or multicast BUM messages.

23. a kind of Provider Edge PE equipment, which is characterized in that including：

Receiving module, for receive the first PE equipment pass through it is how point-to-points in the bearer network in ether Virtual Private Network VPN The data message that the tunnels point MP2MP are sent, wherein mark of the data message using the ethernet segment ES of the first PE connections The Tag Packaging of label and the tunnels MP2MP, the first PE equipment and the PE equipment are the PE equipment of the bearer network, institute It states each ES at least one ES of bearer network connection and is connected to the multiple of a customer edges CE equipment and the bearer network Between PE equipment, the label of each ES at least one ES is distributed by the root node in the tunnels MP2MP；

Decapsulation module obtains the label of the ES of the first PE equipment connection and described for decapsulating the data message The label in the tunnels MP2MP；

Determining module, the label of the ES for being connected according to the first PE equipment and the label in the tunnels MP2MP determine It is no to send the data message on the ES of PE equipment connection.

24. PE equipment according to claim 23, which is characterized in that the determining module connects according to the first PE equipment The label of the ES connect and the label in the tunnels MP2MP determine the mark for the ES that the first PE equipment connects, and pass through ratio The mark for the ES that the mark of the ES of the first PE equipment connection is connect with the PE equipment, it is determined whether set with the PE The data message is sent on the ES of standby connection,

The wherein described PE equipment further includes：

The mark of sending module, the ES for being connected in the first PE equipment is identical as the mark of ES that the PE equipment connects When, the data message is not sent on the ES being connect with the PE equipment, in the mark of the ES of the first PE equipment connection When different from the mark of ES of PE equipment connection, the data message is sent on the ES being connect with the PE equipment.

25. the PE equipment according to claim 23 or 24, which is characterized in that the first PE equipment is the MP2MP tunnels The root node in road, the PE equipment further include：

Sending module, for sending the first route messages in the bearer network, first route messages carry the PE and set The mark of the ES of standby connection；The receiving module also receives the secondary route message that the first PE equipment is sent, and described second Route messages carry at least one 2nd PE equipment of the identification information of the tree root in the tunnels MP2MP, the bearer network The mark of the ES of each PE equipment connection and the ES connected for each PE equipment at least one 2nd PE equipment divide The label matched.

26. the PE equipment according to claim 23 or 24, which is characterized in that the data message further includes the ether The label of the broadcast domain of VPN is used to indicate the broadcast domain that the data message belongs to the ether VPN, and the bearer network The label of the broadcast domain of at least one ether VPN of connection is distributed by the root node in the tunnels MP2MP.

27. PE equipment according to claim 26, which is characterized in that the first PE equipment is the tunnels MP2MP Root node, the PE equipment further include：

Sending module, for sending third route messages on the bearer network, the third route messages carry the PE and set The mark of the broadcast domain of the ether VPN of standby connection；

The receiving module also receives the first PE equipment and sends the 4th route messages, described in the 4th route messages carry Each PE equipment connection in the 2nd PE equipment of at least one of the identification information of the tree root in the tunnels MP2MP, the bearer network Ether VPN broadcast domain mark and at least one 2nd PE equipment each PE equipment connection ether The label of the broadcast domain distribution of VPN.

28. the PE equipment according to claim 23 or 24, which is characterized in that the data message is broadcast, unknown unicast Or multicast BUM messages.

29. a kind of Provider Edge PE equipment, which is characterized in that including：

Receiving module, the first route messages for receiving the transmission of each PE equipment at least one 2nd PE equipment are described First route messages carry the mark of the ES for the 2nd PE equipment connection for sending first route messages, the PE equipment and institute The PE equipment for the bearer network that at least one 2nd PE equipment is ether Virtual Private Network VPN is stated, the bearer network connection is extremely Each ES in a few ES is connected between a customer edges CE equipment and multiple PE equipment of the bearer network；

Distribution module, for distributing label for the ES of each PE equipment connection at least one 2nd PE equipment；

Sending module, for sending secondary route message at least one 2nd PE equipment, the secondary route message is taken Each PE in the identification information of the tree root in the tunnel of the MP2MP with the bearer network, at least one 2nd PE equipment is set The mark of the ES of standby connection and the label of the ES distribution connected for each PE equipment at least one 2nd PE equipment, The PE equipment is the root node in the tunnels MP2MP.

30. PE equipment according to claim 29, which is characterized in that the receiving module also receives at least one 2nd PE At least one third route messages that each PE equipment in equipment is sent, the third route messages, which carry, sends the third The mark of the broadcast domain of the ether VPN of the 2nd PE equipment connection of route messages；The distribution module is also described at least one The broadcast domain of the ether VPN of each PE equipment connection in 2nd PE equipment distributes label；The sending module also to it is described extremely Few 2nd PE equipment sends the 4th route messages, the 4th route messages carry the identifying of the PE equipment, it is described extremely The mark of the broadcast domain of the ether VPN of each PE equipment connection in few 2nd PE equipment and be at least one PE The label of the broadcast domain distribution of the ether VPN of each PE equipment connection in 2nd PE equipment.

31. a kind of Provider Edge PE equipment, which is characterized in that including：

Sending module, for sending the first route messages in the bearer network of ether Virtual Private Network VPN, the first via by Message carries the mark of the ES of the PE equipment connection, and each ES at least one ES of the bearer network connection is connected to one Between a customer edges CE equipment and multiple PE equipment of the bearer network；

Receiving module is used to receive the secondary route message of the first PE equipment transmission, is held described in the secondary route message carrying The mark of the ES of each PE equipment connection in the identification information of the tree root in the tunnels MP2MP of contained network, at least one 2nd PE equipment The label of knowledge and the ES distribution connected for each PE equipment at least one 2nd PE equipment, wherein first PE Equipment and at least one 2nd PE equipment are the PE equipment of the bearer network of ether Virtual Private Network VPN, the first PE Equipment is the root node in the tunnels MP2MP.

32. PE equipment according to claim 31, which is characterized in that the sending module is also sent on the bearer network Third route messages, the third route messages carry the mark of the ether VPN broadcast domains of the PE equipment connection；The reception Module also receives the first PE equipment and sends the 4th route messages, and the 4th route messages carry the tunnels MP2MP The ether VPN's of each PE equipment connection in the 2nd PE equipment of at least one of the identification information of tree root, the bearer network The broadcast domain point of the mark of broadcast domain and the ether VPN connected for each PE equipment at least one 2nd PE equipment The label matched.