CN102281148A - Method for establishing multicast distribution tree in mode of inter-virtual private network (VPN), equipment and system thereof - Google Patents
Method for establishing multicast distribution tree in mode of inter-virtual private network (VPN), equipment and system thereof Download PDFInfo
- Publication number
- CN102281148A CN102281148A CN2011102426715A CN201110242671A CN102281148A CN 102281148 A CN102281148 A CN 102281148A CN 2011102426715 A CN2011102426715 A CN 2011102426715A CN 201110242671 A CN201110242671 A CN 201110242671A CN 102281148 A CN102281148 A CN 102281148A
- Authority
- CN
- China
- Prior art keywords
- vpn
- information
- message
- vrf
- multicast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method for establishing a multicast distribution tree in a mode of inter-virtual private network (VPN), equipment and a system thereof. The method comprises the following steps that: when receiving bootstrap messages (BSM) published by a bootstrap router (BSR) in a first VPN, a first provider edge (PE), which is responsible for forwarding the message inter-VPN, floods on all multicast interfaces in virtual routing and forwarding (VRF) information of the first VPN and the VRF information of the each second VPN of the BSM according to the preconfigured VRF information of the first VPN and the VRF information of the each second VPN associated with the first VPN; customer edges (CEs) in the first VPN and the second VPN learn rendezvous point (RP) information which is in the received BSM; the CEs in the first VPN and the second VPN send Joint messages to the learned RP so as to construct the multicast distribution tree in the mode of inter-VPN. By using the invention, in the current multicast VPN outside network application, a problem of large network maintenance workload caused by static configuration of the RP can be solved and single point faults are not easy to be formed.
Description
Technical field
The present invention relates to network communication field, relate in particular to the method, apparatus and system that a kind of VPN of striding sets up multicast distribution tree.
Background technology
Virtual Private Network (Virtual Private Network, VPN), being meant in common network provides dedicated communication link for the user, and these dedicated communication links need not to set up special-purpose physical link and realize, therefore claim that it is a Virtual Private Network.
VPN by the edge device of carrier network (Provider Edge, PE), the core router of carrier network (Provider, P), (Customer Edge CE) forms for the edge device of user network.PE links to each other with CE, and it is gone up the user network data that arrive with CE and is put into propagation (PE that is in this position is called entry PE) on the public network; And it also propagates into (PE that is in this position calls outlet PE) in the user network to the message that carries the user network data by CE again from public network.P equipment is connected with PE or P, and it is responsible for propagating the data of public network.CE equipment is connected with PE, and it is the network interface that user network is linked into public network.
In the ordinary course of things, the data of a VPN are merely able to pass to other user in this VPN.In the extranet of VPN was used, the data of a VPN can pass to the user of other VPN.
Solution at the clean culture vpn service has been proposed in RFC4364, also has the multicasting VPN business in the prior art, the multicasting VPN business has multiple implementation, that at present popular is multicast domain (Multicast-Domain, MD) scheme, it is by safeguarding that for each VPN a multicast domain realizes in carrier network.Each multicast domain all has a default multicast distribution tree, and (Multicast Distribution Tree Default-MDT) is used for all PE in the link field.
By this Default-MDT, user network can be regarded multicast domain as a LAN, the multicast packet that is to say CE propagates into after the entry PE of its connection, this multicast packet will be on public network be transmitted to all outlet ports PE this multicast domain, and this multicast packet is being propagated on Default-MDT with multicast mode on the public network.In outlet PE, will according to whether there being the multicast recipient to determine whether will transmit these multicast packets in the VPN website that is connected, if there is not the recipient in the website, then as long as multicast packet is abandoned.
Popular multicast routing protocol generally is sparse mode independent multicast agreement (Protocol Independent Multicast-Sparse Mode in the actual environment at present, PIM-SM), this agreement is a kind of agreement that makes up multicast distribution tree in the mode that initiatively adds, when the equipment that connects the recipient detects multicast reception demand, it is initiatively to convergent point (Rendezvous Point, RP) direction is sent adding (Join) message, and the equipment of receiving the Join message can continue to send the Join message to the direction of RP, one of final formation is a root with RP, each equipment that connects the recipient is the multicast distribution tree of leaf, and multicast data flow also will be along this tree above RP be forwarded to the recipient.
The extranet of multicasting VPN is used the website that makes the interior multicast source of a VPN multicast data flow can be distributed to other VPN.This function makes an enterprise that oneself information is distributed to other enterprise by VPN and becomes very convenient.Yet in the multicasting VPN extranet was used, there was a problem in the election of RP.Specify as follows:
During the multicasting VPN extranet is used, RP in receiving terminal VPN network can only take the scheme of static configuration at present, the defective of this scheme is, if receiving terminal VPN network size is bigger, the identical RP of static configuration on need be in the VPN all equipment of user so, the workload of configuration is very big, is unfavorable for the maintenance of network.Simultaneously, there is another shortcoming in the static configuration scheme, and when promptly the RP of static configuration broke down, in the time of can't in time reconfiguring the RP that makes new advances, network also just can't dynamically recover, and forms Single Point of Faliure.
Summary of the invention
A kind of VPN of striding that the embodiment of the invention provides sets up the method, apparatus and system of multicast distribution tree, in order to solve in the existing multicasting VPN extranet application, because the network operation workload that RP takes the mode of static configuration to bring is big, and form the problem of Single Point of Faliure easily.
The embodiment of the invention provides strides the method that VPN sets up multicast distribution tree, comprising:
Be responsible for striding the first carrier network edge device PE that VPN E-Packets, in receiving a VPN during bootstrap message BSM message of BootStrap Router BSR issue, virtual routing forwarding VRF information according to a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
User network boundary device CE among the one VPN and Ge Di two VPN learns convergent point RP information among the VPN from the described BSM message that receives behind the BSM message that receives described PE forwarding;
CE among the one VPN and Ge Di two VPN sends to the described RP that learns and adds the Join message is striden VPN with structure multicast distribution tree.
The edge device PE of a kind of carrier network that the embodiment of the invention provides, this PE are preconfigured to and are responsible for striding VPN and E-Packet, and described PE comprises:
Receiver module is used for receiving the bootstrap message BSM message that a VPN BootStrap Router BSR issues;
Forwarding module, be used for virtual routing forwarding VRF information according to a pre-configured VPN, and the virtual routing forwarding VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
Memory module, the VRF information that is used to store a pre-configured VPN, with and the VRF information of related each the 2nd VPN.
A kind of user network boundary device CE that the embodiment of the invention provides comprises:
Receiver module is used for receiving and is responsible for the bootstrap message BSM message that the first carrier network edge device PE that crossing virtual private networks VPN the E-Packets VRF information multicast port by the 2nd VPN under the described CE floods;
Study module is used for behind the BSM message that receives described PE forwarding, convergent point RP information among study the one VPN from the described BSM message that receives;
Join message sending module is used for sending adding Join message is striden VPN with structure multicast distribution tree to the described RP that learns.
A kind of VPN of striding that the embodiment of the invention provides sets up the system of multicast distribution tree, comprising:
Be responsible for striding the first carrier network edge device PE that VPN E-Packets, be used for when receiving the bootstrap message BSM message of VPN BootStrap Router BSR issue, virtual routing forwarding VRF information according to a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
User network boundary device CE among the one VPN and Ge Di two VPN is used for behind the BSM message that receives described PE forwarding, convergent point RP information among study the one VPN from the described BSM message that receives; And send to the described RP that learns and to add the Join message is striden VPN with structure multicast distribution tree.
The beneficial effect of the embodiment of the invention comprises:
The embodiment of the invention provides strides the method that VPN sets up multicast distribution tree, equipment and system, extranet at multicasting VPN is used, by adopting the scheme of dynamic election RP, and be responsible for striding on the PE that VPN E-Packets, be provided with BSR place the one VPN with and the VRF information of related each the 2nd VPN, the VPN that strides that the BSM message of dynamic RP information is carried in realization transmits, make the CE of different VPN can both learn dynamic RP, thereby stride VPN and set up multicast distribution tree, avoided in the extranet application of existing multicasting VPN, the defective that can't recover rapidly automatically after the Single Point of Faliure that adopts the static configuration scheme to be caused produces, make when RP breaks down, can dynamically elect RP, network can recover rapidly like this, strengthened the robustness of network, in addition, since this scheme need be in the 2nd VPN of multicast packet receiving terminal the RP address among static configuration the one VPN, only need stride that the corresponding forwarding mechanism of configuration gets final product on the equipment that VPN transmits being responsible for the BSM message, make the workload of configuration reduce greatly, and implement simple.
Description of drawings
Fig. 1 strides the flow chart that VPN sets up the method for multicast distribution tree for what the embodiment of the invention provided;
The PE that Fig. 2 provides for the embodiment of the invention transmits the particular flow sheet of the step of BSM message;
The schematic diagram that Fig. 3 transmits for the BSM message that the embodiment of the invention provides;
The schematic diagram that Fig. 4 transmits for the Jion message that the embodiment of the invention provides;
The structural representation of the carrier network edge device that Fig. 5 provides for the embodiment of the invention;
The structural representation of the user network boundary device that Fig. 6 provides for the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment that a kind of VPN of striding that the embodiment of the invention is provided sets up the method, apparatus and system of multicast distribution tree is described in detail.
For the method, apparatus and system that VPN sets up multicast distribution tree of striding that illustrate that better the embodiment of the invention provides, below will issue BootStrap Router (the Bootstrap router of RP information, BSR) place VPN (just multicast packet being shared the VPN to other VPN) is called a VPN, and the VPN of receiving multicast data is called the 2nd VPN.In the extranet of multicasting VPN was used, the quantity of the 2nd VPN was at least one.The embodiment of the invention need be striden VPN ground and be transmitted dynamic RP information between a VPN and the 2nd VPN.
Specifically, a kind of VPN of striding that the embodiment of the invention provides sets up the method for multicast distribution tree, as shown in Figure 1, comprises following several steps:
S101, be responsible for striding bootstrap message (Bootstrap messages, BSM) message that a PE that VPN E-Packets receives BSR issue among the VPN;
The relevant information that includes the RP that dynamically elects among the VPN in this BSM message.
S102, a PE are according to the VRF information of a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
CE among S103, a VPN and Ge Di two VPN learns RP information among the VPN from the described BSM message that receives behind the BSM message that receives described PE forwarding;
CE among S104, a VPN and Ge Di two VPN sends to the described RP that learns and adds the Join message is striden VPN with structure multicast distribution tree.
The embodiment of the invention provides strides the method that VPN sets up multicast distribution tree, in order to overcome in the existing VPN extranet application, the problem of the series of malpractice that RP employing static configuration is brought is in the embodiment of the invention, for RP, adopted the mode of dynamic election, preferably, in the embodiment of the invention, use existing BSR mechanism dynamically to elect RP, certainly, the embodiment of the invention is not limited to the dynamically mode of election RP of this kind.
Dynamically elect after the RP, how to allow the multicast recipient who belongs to different VPN can both learn the relevant information of RP, and make up the multicast distribution tree of striding VPN in view of the above, become embodiment of the invention the very corn of a subject to be solved.In order addressing this problem, before above-mentioned steps S101～S104, also to comprise needs are striden the step that PE that the VPN message transmits disposes accordingly.
In the extranet of multicasting VPN is used, when disposing VPN, planned that the VPN that strides that need (be referred to as a PE in the embodiment of the invention) on which PE and finish message transmits, and at this equipment, needs pre-configured following content:
1) a VPN corresponding virtual routing forwarding (Virtual Routing and Forwarding, the VRF) information at BSR place;
2) the VRF information of each two VPN related (these the 2nd VPN will as striding the recipient that VPN E-Packets) with a VPN.
The forwarding behavior of striding VPN when these configuration informations can be used for instructing a PE to receive the BSM message that is to say if a PE receives the BSM message from the VPN at BSR place, it need be forwarded in the middle of each port of the pairing VRF information of receiving terminal VPN.
In the prior art, in a PE, disposed several VRF information, the effect of each VRF information is similar to virtual router, seems the PE equipment of a special use.Each VRF information comprises following element:
Routing table independently;
One group of set that belongs to the multicast interface of this VRF;
One group of Routing Protocol that only is used for this VRF.
Through after the above-mentioned configuration, in above-mentioned steps S102, the one PE can be according to the VPN of the BSR that sends the BSM message, incidence relation with each the 2nd VPN, to flood on this BSM message all multicast interfaces in the VRF of VPN information, also will flood on this BSM message all multicast interfaces in the VRF of each the 2nd VPN information simultaneously, like this, these messages just can arrive among the CE of a VPN and the 2nd VPN.
Particularly, in above-mentioned steps S102, as shown in Figure 2, a PE realizes that by following process the BSM message floods on all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN:
S201, flow process begin;
S202, a PE carry out reverse path to the BSM message that receives and transmit (Reverse Path Forwarding, RPF) inspection according to the regulation of BSR agreement; If check and pass through, carry out following step S203, otherwise, carry out following step S207;
The embodiment of the rpf check of BSR agreement defined belongs to the category of prior art, is not described in detail in this.
S203, a PE will flood on BSM message each multicast interface in the VRF of a VPN;
The VRF information of each the 2nd VPN of S204, PE traversal, at the VRF information of each the 2nd VPN, whether all multicast interfaces that detect in this VRF information belong to the specified RPF interface of local singlecast router; If, then carry out following step S205, otherwise, execution in step S206;
S205, will flood on BSM message each multicast interface in the VRF of the 2nd VPN information;
S206, judge whether to have traveled through the VRF information of all the 2nd VPN, if, carry out following step S207, otherwise, repeated execution of steps S204.
S207, process ends.
In above-mentioned steps S204, whether the multicast interface that why only needs this BSM message of detection to arrive is to belong to the specified RPF interface of local singlecast router, and do not need the RPF neighbours on this RPF interface of needs detection as BSR agreement regulation, be because: in this VRF information, can not comprise the neighbor information on this RPF interface, can't carry out conventional rpf check.On the other hand,, in testing process, carried out correct RPF neighbours and detected the VRF information of a VPN at this BSM message, empirical tests the correctness in source, so also there is no need rechecking again.In receiving terminal VRF, to carry out purpose that RPF detects and only be in order to prevent to dispose wrong, receive the BSM message that need not to transmit.
After above-mentioned steps S101 and S102, the BSM message is transmitted among each the 2nd VPN, finally reaches the CE among each the 2nd VPN, and preferably, the CE among each the 2nd VPN arrives CE by the default multicast distribution tree (Default-MDT) of the 2nd affiliated VPN.
Preferably, in the embodiment of the invention, the one PE also needs study RP information from the BSM message that receives, and it is disposed in the VRF information of the 2nd VPN related with a VPN, like this, the one PE just can have RP information to finish the structure of multicast distribution tree when receiving the Join message that each the 2nd VPN sends.Separate between this step and the above-mentioned steps S102, can be before above-mentioned steps S102, carry out afterwards or synchronously.
With the network architecture shown in Figure 3 is the process that example explanation BSM message is transmitted between each the 2nd VPN.
As shown in Figure 3, suppose that on PE1 configuration strides VPN to the BSM message of VPN A and be forwarded to VPNB and VPN C.So, PE1 receives BSM message among the VPN A that CE1 transmits (as the R1 issue of BSR) afterwards, it can will flood on each the multicast interface in the VRF information of this message under VPN B and VPN C, transmit at public network by VPN B and VPN C Default-MDT separately then, and finally arrive on the CE3 of the CE2 of VPN B and VPN C, thereby allow CE2 and CE3 can from the BSM message, dynamically acquire RP information.
The BSM message is when being forwarded to VPN B and VPN C, the VRF of VPN B, the VPNC that disposes among the PE1 can learn the information of this dynamic RP equally from the BSM message, final information of in PE1, preserving this dynamic RP, like this, when PE1 receives Join message from VPN B and VPN C, can there be RP information to carry out the structure of multicast distribution tree.
In above-mentioned steps S104, CE among the one VPN and the 2nd VPN is after getting access to corresponding RP information from the BSM message, the CE of the one VPN, because RP is located among the same VPN, it initiates the Join message to this RP, the process that makes up multicast distribution tree does not repeat them here, and in the embodiment of the invention, the process of the forwarding of striding VPN of Join message is simply described as follows:
The 2nd PE that CE among the 2nd VPN connects, the Default-MDT head of the 2nd VPN under this CE is gone up in the Join message encapsulation that this CE is sent, and is forwarded to a PE by the Default-MDT of the 2nd VPN;
The one PE removes the default multicast distribution tree head of the 2nd VPN in the Join message that is received, and will remove the Join message of default multicast distribution tree head, and the RP direction in a VPN is transmitted.
The network architecture with Fig. 3 is an example, Join message trend in this network architecture as shown in Figure 4, and the Join message among VPNB and the VPN C all will be transferred on the PE1 by each self-corresponding public network Default-MDT.In the drawings, after the CE2 of VPN B acquires the order request of PC of VPN B, if it can know RP, it just can send the Join message to the direction of RP so, the Join message that CE2 sends is through after the PE2, with the packed Default-MDT head of going up VPN B, and be transferred on the PE1 by the Default-MDT of VPN B.PE1 can be converted to the Join message of VPN B the Join message (promptly removing the Default-MDT head of VPN B) of VPN A this moment and continue to send the Join message to the RP direction, arrives RP until the Join message.Join message repeating process among the VPN C and the Join message repeating process among the VPN B are similar.
Based on same inventive concept, the embodiment of the invention also provides a kind of carrier network edge device PE, user network boundary device CE and has striden the system that VPN sets up multicast distribution tree, because these equipment are similar to the method that the aforementioned VPN of striding sets up multicast distribution tree with the principle that system is dealt with problems, therefore the enforcement of this equipment and system can repeat part and repeat no more referring to the enforcement of preceding method.
A kind of carrier network edge device PE that the embodiment of the invention provides, this PE are preconfigured to and are responsible for striding VPN and E-Packet, and as shown in Figure 5, this PE specifically comprises:
Receiver module 501 is used for receiving the BSM message that a VPN BSR issues;
Forwarding module 502, be used for VRF information according to a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
Memory module 503, the VRF information that is used to store a pre-configured VPN, with and the VRF information of related each the 2nd VPN.
Further, above-mentioned forwarding module 502 specifically is used for the regulation according to the BSR agreement, and the BSM message that receives is carried out rpf check; If check and pass through, then will flood on described BSM message each multicast interface in the VRF of a VPN; The VRF information of each the 2nd VPN of traversal detects further whether the multicast interface belongs to the specified reverse path forwarding RPF interface of local singlecast router in this VRF information that the BSM message will reach; If will flood on described BSM message each multicast interface in the VRF of the 2nd VPN information.
Further, the above-mentioned PE that the embodiment of the invention provides as shown in Figure 5, can also comprise: RP study module 504 is used for from the BSM message study RP information that receives, and is disposed in the VRF information of the VRF information of a VPN and Ge Di two VPN.
A kind of user network boundary device CE that the embodiment of the invention provides as shown in Figure 6, comprising:
Join message sending module 603 is used for sending adding Join message is striden VPN with structure multicast distribution tree to the described RP that learns.
Further, when this CE was CE among the 2nd VPN, above-mentioned receiver module 601 specifically was used for receiving the BSM message that a described PE transmits by the default multicast distribution tree of the 2nd affiliated VPN.
A kind of VPN of striding that the embodiment of the invention provides sets up the system of multicast distribution tree, comprising:
Be responsible for striding the PE that VPN E-Packets, be used for when receiving the BSM message of VPN BSR issue, VRF information according to a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
CE among the one VPN and Ge Di two VPN is used for behind the BSM message that receives described PE forwarding, convergent point RP information among study the one VPN from the described BSM message that receives; And send to the described RP that learns and to add the Join message is striden VPN with structure multicast distribution tree.
Further, the above-mentioned VPN of striding that the embodiment of the invention provides sets up the system of multicast distribution tree, also comprises: the 2nd PE that is connected with CE among the 2nd VPN; Wherein:
The 2nd PE is used for the Join message that described CE sends is encapsulated the default multicast distribution tree head of the 2nd VPN under the above CE, and is forwarded to a described PE by the default multicast distribution tree of the 2nd VPN;
Correspondingly, a PE, also be used for removing with the default multicast distribution tree head of Join message the 2nd VPN that receives, and the method forwarding that will remove the RP of Jion message in a VPN of default multicast distribution tree head.
The embodiment of the invention provides strides the method that VPN sets up multicast distribution tree, equipment and system, extranet at multicasting VPN is used, by adopting the scheme of dynamic election RP, and be responsible for striding on the PE that VPN E-Packets, be provided with BSR place the one VPN with and the VRF information of related each the 2nd VPN, the VPN that strides that the BSM message of dynamic RP information is carried in realization transmits, make the CE of different VPN can both learn dynamic RP, thereby stride VPN and set up multicast distribution tree, avoided in the extranet application of existing multicasting VPN, the defective that can't recover rapidly automatically after the Single Point of Faliure that adopts the static configuration scheme to be caused produces, make when RP breaks down, can dynamically elect RP, network can recover rapidly like this, strengthened the robustness of network, in addition, since this scheme need be in the 2nd VPN of multicast packet receiving terminal the RP address among static configuration the one VPN, only need stride that the corresponding forwarding mechanism of configuration gets final product on the equipment that VPN transmits being responsible for the BSM message, make the workload of configuration reduce greatly, and implement simple.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a crossing virtual private networks VPN sets up the method for multicast distribution tree, it is characterized in that, comprising:
Be responsible for striding the first carrier network edge device PE that VPN E-Packets, in receiving a VPN during bootstrap message BSM message of BootStrap Router BSR issue, virtual routing forwarding VRF information according to a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
User network boundary device CE among the one VPN and Ge Di two VPN learns convergent point RP information among the VPN from the described BSM message that receives behind the BSM message that receives described PE forwarding;
CE among the one VPN and Ge Di two VPN sends to the described RP that learns and adds the Join message is striden VPN with structure multicast distribution tree.
2. the method for claim 1 is characterized in that, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN, specifically comprises:
The one PE carries out reverse path to the BSM message that receives and transmits rpf check according to the regulation of BSR agreement;
If check and pass through, then will flood on described BSM message each multicast interface in the VRF of a VPN;
The VRF information of each the 2nd VPN of described PE traversal detects further whether the multicast interface belongs to the specified RPF interface of local singlecast router in this VRF information that the BSM message will reach; If will flood on described BSM message each multicast interface in the VRF of the 2nd VPN information.
3. the method for claim 1 is characterized in that, also comprises:
A described PE is study RP information from the BSM message that receives, and be disposed in the VRF information of the VRF information of a VPN and Ge Di two VPN.
4. as each described method of claim 1-3, it is characterized in that the CE among each the 2nd VPN receives the BSM message that the 2nd PE transmits by following manner, specifically comprises:
CE among each the 2nd VPN receives the BSM message that a described PE transmits by the default multicast distribution tree of the 2nd affiliated VPN respectively.
5. as each described method of claim 1-3, it is characterized in that the CE among each the 2nd VPN sends to the described RP that learns and adds the Join message, specifically comprises:
The 2nd PE that CE among described the 2nd VPN connects, the default multicast distribution tree head of the 2nd VPN under this CE is gone up in the Join message encapsulation that the CE among described the 2nd VPN is sent, and is forwarded to a described PE by the default multicast distribution tree of the 2nd VPN;
A described PE removes the default multicast distribution tree head of the 2nd VPN in the Join message that is received, and will remove the direction forwarding of the RP of Jion message in a VPN of default multicast distribution tree head.
6. the edge device PE of a carrier network is characterized in that, described PE is preconfigured to responsible crossing virtual private networks VPN and E-Packets, and described PE comprises:
Receiver module is used for receiving the bootstrap message BSM message that a VPN BootStrap Router BSR issues;
Forwarding module, be used for virtual routing forwarding VRF information according to a pre-configured VPN, and the virtual routing forwarding VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
Memory module, the VRF information that is used to store a pre-configured VPN, with and the VRF information of related each the 2nd VPN.
7. equipment as claimed in claim 6 is characterized in that, described forwarding module specifically is used for the regulation according to the BSR agreement, the BSM message that receives is carried out reverse path transmit rpf check; If check and pass through, then will flood on described BSM message each multicast interface in the VRF of a VPN; The VRF information of each the 2nd VPN of traversal detects further whether the multicast interface belongs to the specified RPF interface of local singlecast router in this VRF information that the BSM message will reach; If will flood on described BSM message each multicast interface in the VRF of the 2nd VPN information.
8. as claim 6 or 7 described equipment, it is characterized in that, also comprise: convergent point RP study module is used for from the BSM message study RP information that receives, and is disposed in the VRF information of the VRF information of a VPN and Ge Di two VPN.
9. a user network boundary device CE is characterized in that, comprising:
Receiver module is used for receiving and is responsible for the bootstrap message BSM message that the first carrier network edge device PE that crossing virtual private networks VPN the E-Packets VRF information multicast port by the 2nd VPN under the described CE floods;
Study module is used for behind the BSM message that receives described PE forwarding, convergent point RP information among study the one VPN from the described BSM message that receives;
Join message sending module is used for sending adding Join message is striden VPN with structure multicast distribution tree to the described RP that learns.
10. equipment as claimed in claim 9 is characterized in that, when described equipment was CE among the 2nd VPN, described receiver module specifically was used for receiving the BSM message that a described PE transmits by the default multicast distribution tree of the 2nd affiliated VPN.
11. a crossing virtual private networks VPN sets up the system of multicast distribution tree, it is characterized in that, comprising:
Be responsible for striding the first carrier network edge device PE that VPN E-Packets, be used for when receiving the bootstrap message BSM message of VPN BootStrap Router BSR issue, virtual routing forwarding VRF information according to a pre-configured VPN, and the VRF information of each two VPN related with a described VPN, will flood on described BSM message all multicast interfaces in the VRF information of the VRF of VPN information and Ge Di two VPN;
User network boundary device CE among the one VPN and Ge Di two VPN is used for behind the BSM message that receives described PE forwarding, convergent point RP information among study the one VPN from the described BSM message that receives; And send to the described RP that learns and to add the Join message is striden VPN with structure multicast distribution tree.
12. system as claimed in claim 11 is characterized in that, also comprises: the 2nd PE that is connected with CE among the 2nd VPN;
Described the 2nd PE is used for the Join message that described CE sends is encapsulated the default multicast distribution tree head of the 2nd VPN under the above CE, and is forwarded to a described PE by the default multicast distribution tree of the 2nd VPN;
A described PE also is used for removing the default multicast distribution tree head of Join message the 2nd VPN that is received, and will remove the direction forwarding of the RP of Jion message in a VPN of default multicast distribution tree head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110242671.5A CN102281148B (en) | 2011-08-22 | 2011-08-22 | Method for establishing multicast distribution tree in mode of inter-virtual private network (VPN), equipment and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110242671.5A CN102281148B (en) | 2011-08-22 | 2011-08-22 | Method for establishing multicast distribution tree in mode of inter-virtual private network (VPN), equipment and system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102281148A true CN102281148A (en) | 2011-12-14 |
| CN102281148B CN102281148B (en) | 2014-07-02 |
Family
ID=45106346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110242671.5A Active CN102281148B (en) | 2011-08-22 | 2011-08-22 | Method for establishing multicast distribution tree in mode of inter-virtual private network (VPN), equipment and system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102281148B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152280A (en) * | 2013-03-12 | 2013-06-12 | 福建星网锐捷网络有限公司 | Multicast stream transmission method, device and inlet edge equipment |
| WO2013123654A1 (en) * | 2012-02-22 | 2013-08-29 | 北京大学深圳研究生院 | Method and system for layered distribution of ip multicast data |
| CN105847069A (en) * | 2012-06-06 | 2016-08-10 | 瞻博网络公司 | Physical path determination for virtual network packet flows |
| US9898317B2 (en) | 2012-06-06 | 2018-02-20 | Juniper Networks, Inc. | Physical path determination for virtual network packet flows |
| US9954798B2 (en) | 2014-03-31 | 2018-04-24 | Juniper Networks, Inc. | Network interface card having embedded virtual router |
| US10243840B2 (en) | 2017-03-01 | 2019-03-26 | Juniper Networks, Inc. | Network interface card switching for virtual networks |
| CN114221828A (en) * | 2021-12-27 | 2022-03-22 | 上海贝锐信息科技股份有限公司 | Double-interface multicast broadcast forwarding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852236A (en) * | 2005-09-28 | 2006-10-25 | 华为技术有限公司 | Method for realizing muti-casting in BGP/MPLS VPN |
| CN101442422A (en) * | 2008-12-17 | 2009-05-27 | 华为技术有限公司 | Data transmission method, system and device |
| CN101567847A (en) * | 2009-06-01 | 2009-10-28 | 杭州华三通信技术有限公司 | Method and equipment for sending bootstrapping messages in multi-cast virtual private network |
| US20100329252A1 (en) * | 2009-06-26 | 2010-12-30 | Nortel Networks Limited | Method and Apparatus for Enabling Multicast Route Leaking Between VRFs in Different VPNs |
-
2011
- 2011-08-22 CN CN201110242671.5A patent/CN102281148B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852236A (en) * | 2005-09-28 | 2006-10-25 | 华为技术有限公司 | Method for realizing muti-casting in BGP/MPLS VPN |
| CN101442422A (en) * | 2008-12-17 | 2009-05-27 | 华为技术有限公司 | Data transmission method, system and device |
| CN101567847A (en) * | 2009-06-01 | 2009-10-28 | 杭州华三通信技术有限公司 | Method and equipment for sending bootstrapping messages in multi-cast virtual private network |
| US20100329252A1 (en) * | 2009-06-26 | 2010-12-30 | Nortel Networks Limited | Method and Apparatus for Enabling Multicast Route Leaking Between VRFs in Different VPNs |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013123654A1 (en) * | 2012-02-22 | 2013-08-29 | 北京大学深圳研究生院 | Method and system for layered distribution of ip multicast data |
| CN105847069A (en) * | 2012-06-06 | 2016-08-10 | 瞻博网络公司 | Physical path determination for virtual network packet flows |
| US9898317B2 (en) | 2012-06-06 | 2018-02-20 | Juniper Networks, Inc. | Physical path determination for virtual network packet flows |
| US10565001B2 (en) | 2012-06-06 | 2020-02-18 | Juniper Networks, Inc. | Distributed virtual network controller |
| CN103152280A (en) * | 2013-03-12 | 2013-06-12 | 福建星网锐捷网络有限公司 | Multicast stream transmission method, device and inlet edge equipment |
| US9954798B2 (en) | 2014-03-31 | 2018-04-24 | Juniper Networks, Inc. | Network interface card having embedded virtual router |
| US10382362B2 (en) | 2014-03-31 | 2019-08-13 | Juniper Networks, Inc. | Network server having hardware-based virtual router integrated circuit for virtual networking |
| US10243840B2 (en) | 2017-03-01 | 2019-03-26 | Juniper Networks, Inc. | Network interface card switching for virtual networks |
| US10567275B2 (en) | 2017-03-01 | 2020-02-18 | Juniper Networks, Inc. | Network interface card switching for virtual networks |
| CN114221828A (en) * | 2021-12-27 | 2022-03-22 | 上海贝锐信息科技股份有限公司 | Double-interface multicast broadcast forwarding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102281148B (en) | 2014-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102281148B (en) | Method for establishing multicast distribution tree in mode of inter-virtual private network (VPN), equipment and system thereof | |
| CN104025508B (en) | For finding the method, equipment and device of multiple spot end points in a network environment | |
| US8804722B2 (en) | Method and apparatus for routing multicast data across multiple multicast routing domains connected by a shortest path bridging (SPB) network | |
| US8730979B2 (en) | Method and system for increasing forwarding efficiency of virtual private LAN service network | |
| US9509609B2 (en) | Forwarding packets and PE devices in VPLS | |
| CN102075439B (en) | Multicast message transmitting method and routing equipment | |
| CN102316030B (en) | Method for realizing two-layer internetworking of data center and device | |
| US20150085640A1 (en) | Forwarding Multicast Data Packets | |
| CN100531138C (en) | Operator's boundary notes, virtual special LAN service communication method and system | |
| CN102143026B (en) | Method for avoiding loop circuit in virtual two layer network | |
| CN104009926A (en) | Multicast method in EVI network and edge device ED | |
| CN101616014A (en) | A kind of method that realizes cross-virtual private local area network multicast | |
| CN103326940A (en) | Method for forwarding message in network and edge device of operator | |
| CN102571375B (en) | Multicast forwarding method and device as well as network device | |
| EP2897328B1 (en) | Method, system and apparatus for establishing communication link | |
| CN101330411B (en) | Method and system for simulating large-scale network topological | |
| CN103138955A (en) | Managing IGMP multicast transmission using multiple queriers | |
| CN102217254B (en) | Method and apparatus for transferring boot strap information | |
| CN102801622A (en) | Transmitting method and device for data messages | |
| CN102025626B (en) | Method for forwarding multicast data message and provider edge | |
| CN102724126A (en) | Method, device and equipment for forwarding Ethernet tree (E-tree) service message | |
| CN102932228A (en) | Communication method, device and system for TRILL (Transparent Interconnection of Lots of Links) network | |
| CN103354567A (en) | Method for synchronizing media access control (MAC) addresses and device | |
| CN105376161B (en) | Multicast distribution tree switching method and device | |
| CN102882760A (en) | Method, module, equipment and system for message processing in virtual private local area network service network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |