CN102299848B - Multicast message transmission method and provider edge device (PE) - Google Patents
Multicast message transmission method and provider edge device (PE) Download PDFInfo
- Publication number
- CN102299848B CN102299848B CN201110243465.6A CN201110243465A CN102299848B CN 102299848 B CN102299848 B CN 102299848B CN 201110243465 A CN201110243465 A CN 201110243465A CN 102299848 B CN102299848 B CN 102299848B
- Authority
- CN
- China
- Prior art keywords
- multicast
- public network
- message
- private network
- distribution tree
- 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.)
- Active
Links
Images
Abstract
The invention discloses a multicast message transmission method and a provider edge device (PE). The method comprises the following steps that: receiving a private network multicast message which needs to be performed multicast transmission in multicast virtual private network (MVPN) by the PE; determining whether the received private network multicast message is a private network multicast protocol message or a private network multicast data message; when the private network multicast message is determined to be the private network multicast protocol message, carrying out multicast transmission to the private network multicast protocol message on a public network through a first multicast distribution tree of a multicast group corresponding o the MVPN; when the private network multicast message is determined to be the private network multicast data message, carrying out multicast transmission to the private network multicast data message on the public network through a second multicast distribution tree of the multicast group corresponding o the MVPN. By using a scheme provided by embodiments of the invention, when the private network multicast message, which is packaged as the public network multicast message, is transmitted on the public network, distinguish between the private network multicast protocol message and the private network multicast data message can be realized.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of multicast message transmission method and provider edge equipment.
Background technology
At present, at multiprotocol label switching/Internet protocol (MPLS/IP, multi-protocol label switching/Internet Protocol) in network, main Border Gateway Protocol/multiprotocol label switching (BGP/MPLS that uses, Border Gateway Protocol/multi-protocol label switching) method set up Virtual Private Network (VPN, Virtual Private Network), i.e. BGP/MPLS VPN.For carry out the transmission of the multicast message between user terminal in VPN network (being private network) in BGP/MPLS vpn environment, existing comparatively widely used is multicast domain MD scheme, and the main process of MD scheme is as follows:
Each VPN network that carries out multicast message transmission is called multicasting virtual private network (MVPN, Multicast Virtual Private Network), (be called for short P network at carrier network, be public network) the middle Protocol Independent Multicast Routing Protocol (PIM that disposes, Protocol Independent Multicast), by the provider edge equipment PE being connected with the each user terminal in MVPN network (Provider Edge Device) composition acquiescence multicast group Default-Group, and be unique multicast address in P network of this MVPN network allocation, be called public network default set address, this address i.e. the group address of this Default-Group.Between each PE of this Default-Group, can pass through multicast routing protocol PIM-SM (Protocol Independent Multicast-Sparse Mode, Protocol independent multicast-sparse mode) mode or by PIM-SSM (Protocol Independent Multicast-Source-Specific Multicast, Protocol Independent Multicast-specific multicast source) mode, set up the public network of its corresponding Default-Group for this MVPN and give tacit consent to multicast distribution tree Default-MDT.The public network Default-MDT that uses PIM-SM and PIM-SSM to set up distinguishes to some extent, specific as follows:
Be illustrated in figure 1 the schematic diagram that uses PIM-SM mode to set up public network Default-MDT, each PE in Default-Group corresponding to MVPN is to the corresponding RP of this Default-Group (Rendezvous Point, convergent point) send join message, in joining message, carry the public network default set address of this Default-Group, RP is according to joining message of receiving, set up take RP as root node, carry the each PE joining message of this public network default set address as the public network Default-MDT of end-node to send, set up the public network Default-MDT of the Default-Group that this MVPN is corresponding.
Be illustrated in figure 2 the schematic diagram that uses PIM-SSM mode to set up public network Default-MDT, each PE in Default-Group corresponding to MVPN all sends and joins message to other PE, in joining message, carry the public network default set address of this Default-Group, for each PE, according to joining message of receiving, set up with certainly as root node, with the public network Default-MDT that other PE in this Default-Group under self is end-node, set up the public network Default-MDT of the Default-Group that this MVPN is corresponding.
Setting up after public network Default-MDT, between each PE of Default-Group, can be by the public network Default-MDT having set up, private network multicast message to this MVPN in public network carries out multicast transmission, thereby further realize the multicast transmission of this private network multicast message in this MVPN, the public network Default-MDT setting up in employing PIM-SSM mode below, as example, is introduced the multicast transmission flow process of private network multicast message:
As shown in Figure 3, in the time having private network multicast message to carry out multicast transmission in MVPN network, private network multicast message is sent to coupled transmitting terminal PE by the multicast source (sending the user terminal of private network multicast message) in this MVPN network; Transmitting terminal PE finds out the Default-Group corresponding with this MVPN, and the public network Default-MDT of this Default-Group having set up, and the employing packaged type corresponding with this Default-Group, private network multicast message in this MVPN is encapsulated, obtain public network multicast message, and take this transmitting terminal PE as root node, in this public network Default-MDT that other PE is end-node, transmit this public network multicast message; Receiving terminal PE is receiving after this public network multicast message, adopt the decapsulation mode corresponding with this public network Default-Group, this public network multicast message receiving is carried out to decapsulation, obtain the private network multicast message in this MVPN, and then this private network multicast message is forwarded to the user terminal in this MVPN being connected with receiving terminal PE.
But, in the scheme that private network multicast message in above-mentioned MVPN transmits by public network, after private network multicast message need to being encapsulated as to public network multicast message, transmit again, be encapsulated as after public network multicast message, for the None-identified of some attributes of private network multicast message, for example, None-identified goes out packaged private network multicast message in public network multicast message, private network multicast protocol message or private network multicast data message, and for the message of different attribute, some processing modes in transmitting procedure are different, for example, require different for protocol massages from the service quality QOS of data message, corresponding processing mode is different, and for example generally do not carry out charge on traffic processing for protocol massages, carry out charge on traffic processing for data message, therefore, private network multicast message is being encapsulated as after public network multicast message, cannot realize the differentiation to private network multicast message type, thereby then cause in transmitting procedure, carrying out differentiating and processing.
Summary of the invention
The embodiment of the present invention provides a kind of multicast message transmission method and provider edge equipment, while being encapsulated as the private network multicast message of public network multicast message, cannot realize the problem that dissimilar private network multicast message is distinguished in order to solve the transmission in public network existing in prior art.
The embodiment of the present invention provides a kind of multicast message transmission method, comprising:
In provider edge equipment PE receiving group Virtual Private Network MVPN, need to carry out the private network multicast message of multicast transmission;
Determine that the described private network multicast message receiving is private network multicast protocol message or private network multicast data message;
In the time that definite described private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to described MVPN, in public network, described private network multicast protocol message is carried out to multicast transmission;
In the time that definite described private network multicast message is private network multicast data message, by the second multicast distribution tree of multicast group corresponding to described MVPN, in public network, described private network multicast data message is carried out to multicast transmission.
The embodiment of the present invention also provides a kind of provider edge equipment PE, comprising:
Receiving element, needs to carry out the private network multicast message of multicast transmission for receiving group Virtual Private Network MVPN;
Determining unit, for determining that the described private network multicast message receiving is private network multicast protocol message or private network multicast data message;
The first transmission unit in the time that definite described private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to described MVPN, carries out multicast transmission to described private network multicast protocol message in public network;
The second transmission unit in the time that definite described private network multicast message is private network multicast data message, by the second multicast distribution tree of multicast group corresponding to described MVPN, carries out multicast transmission to described private network multicast data message in public network.
Beneficial effect of the present invention comprises:
In the method that the embodiment of the present invention provides, PE is receiving after the private network multicast message that needs to carry out multicast transmission in MVPN, first determine that this private network multicast message is private network multicast protocol message or private network multicast data message, in the time being private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to MVPN, in public network, this private network multicast protocol message is carried out to multicast transmission, in the time being private network multicast data message, by the second multicast distribution tree of multicast group corresponding to MVPN, in public network, this private network multicast data message is carried out to multicast transmission.Owing to transmitting private network multicast protocol message and private network multicast data message by different multicast distribution trees in scheme, thereby in transmitting procedure, multicast distribution tree difference that can be based on adopted, realizes the differentiation to private network multicast protocol message and private network multicast data message.
Accompanying drawing explanation
Fig. 1 uses PIM-SM mode to set up the schematic diagram of public network Default-MDT in prior art;
Fig. 2 uses PIM-SSM mode to set up the schematic diagram of public network Default-MDT in prior art;
Fig. 3 is available technology adopting public network Default-MDT carries out multicast transmission schematic diagram to private network multicast message;
The flow chart of the multicast message transmission method that Fig. 4 provides for the embodiment of the present invention;
The flow chart that Fig. 5 is the multicast message transmission method that provides in the embodiment of the present invention 1;
The flow chart that Fig. 6 is the multicast message transmission method that provides in the embodiment of the present invention 2;
The structural representation that Fig. 7 is the provider edge equipment that provides in the embodiment of the present invention 3.
Embodiment
While being encapsulated as the private network multicast message of public network multicast message in order to be given in public network transmission, the implementation that can distinguish dissimilar private network multicast message, the embodiment of the present invention provides a kind of multicast message transmission method and provider edge equipment, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein only, for description and interpretation the present invention, is not intended to limit the present invention.And in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
The embodiment of the present invention provides a kind of multicast message transmission method, as shown in Figure 4, comprising:
Step S401, PE receive the private network multicast message that needs to carry out multicast transmission in MVPN.
Step S402, definite this private network multicast message receiving are private network multicast protocol message or private network multicast data message.
Step S403, in the time that definite this private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to this MVPN, in public network, this private network multicast protocol message is carried out to multicast transmission;
In the time that definite this private network multicast message is private network multicast data message, by the second multicast distribution tree of multicast group corresponding to this MVPN, in public network, this private network multicast data message is carried out to multicast transmission.
Preferably, in such scheme, for the multicast transmission of private network multicast protocol message, specifically can transmit by the first public network acquiescence multicast distribution tree of acquiescence multicast group corresponding to this MVPN; For the multicast transmission of private network multicast data message, specifically can transmit by the second public network acquiescence multicast distribution tree of acquiescence multicast group corresponding to this MVPN, or corresponding by this MVPN, and the public network data multicast distribution tree of the data multicast group corresponding with private network destination address in this private network multicast data message transmits.
Preferably, in such scheme, difference that can also be based on the first multicast distribution tree and the second multicast distribution tree, realize private network multicast protocol message and private network multicast data message to corresponding transmission separately, adopt respectively corresponding processing policy to process, for example, charge on traffic is processed and service quality Q OS processes.
Below in conjunction with accompanying drawing, method provided by the invention and device are described in detail with specific embodiment.
Embodiment 1:
In the present embodiment 1 for the multicast transmission of private network multicast protocol message, specifically transmit by the first public network acquiescence multicast distribution tree of acquiescence multicast group corresponding to this MVPN, for the multicast transmission of private network multicast data message, specifically transmit by the second public network acquiescence multicast distribution tree of acquiescence multicast group corresponding to this MVPN.
The flow chart that the multicast message transmission method providing in the embodiment of the present invention 1 is provided, specifically comprises following treatment step:
The private network multicast message that user terminal in step S501, MVPN need to carry out multicast transmission sends to coupled PE; In this private network multicast message, carry source address and private network destination address.
Step S502, this PE receive after this private network multicast message of this user terminal transmission, determine the type of this private network multicast message, determine it is private network multicast protocol message or private network multicast data message.Specifically can determine according to the value of type field in message, also can determine according to the private network destination address carrying in message, because some private network destination addresses are exclusively used in transmission protocol message, when some private network destination addresses, be exclusively used in data message transmission.
In the time that definite this private network multicast message is private network multicast protocol message, enter step S503.
In the time that definite this private network multicast message is private network multicast data message, enter step S505.
Step S503, use the first public network default set address of acquiescence multicast group corresponding to MVPN, this private network multicast protocol message is encapsulated as to the first public network multicast message that public network destination address is this first public network default set address.
Specifically can adopt following encapsulation process to this private network multicast protocol message:
PE determines the interface identifier of the interface that receives this private network multicast protocol message, can determine the network identity of the MVPN under this private network multicast protocol message based on this interface identifier, thereby determine the first public network default set address of the acquiescence multicast group that this MVPN is corresponding, and this first public network default set address is corresponding with protocol massages type, be specially: determining after the network identity of the MVPN under this private network multicast protocol message, from group address table corresponding to this network identity, based on protocol massages type, search the corresponding relation of type of message and public network default set address, determine the first public network default set address corresponding with protocol massages type,
This first public network default set address that use is determined, is encapsulated as by this private network multicast protocol message the first public network multicast message that public network destination address is this first public network default set address.
Step S504, PE are carrying out after encapsulation process this private network multicast protocol message, pass through the first public network acquiescence multicast distribution tree of the acquiescence multicast group of this MVPN in public network, and this first public network multicast message is carried out to multicast transmission; Wherein, the first public network acquiescence multicast distribution tree is corresponding with the first public network default set address.
Be specifically as follows: PE this first public network default set address based on determining, find out the first corresponding public network acquiescence multicast distribution tree, in the first public network acquiescence multicast distribution tree, preserving for public network destination address is the forwarding interface information of the public network multicast message of the first public network default set address, thereby by this first public network acquiescence multicast distribution tree, this first public network multicast message is forwarded from forwarding interface corresponding to this forwarding interface information.
For the foundation of the first public network acquiescence multicast distribution tree, can adopt variety of way of the prior art, be no longer described in detail at this.
PE forwards this first public network multicast message in public network by the first public network acquiescence multicast distribution tree after, this the first public network multicast message will be forwarded to other PE of acquiescence multicast group of this MVPN, in this process, transferring equipment in public network can be according to the public network destination address of this first public network multicast message, the first public network default set address, carries out message repeating; Other PE carries out decapsulation processing to this first public network multicast message receiving, obtain this private network multicast protocol message, and be transmitted to the user terminal that has reception demand being connected, specifically can forward by the private network destination address based on carrying in this private network multicast protocol message.
Preferably, in the process that the first public network multicast message is transmitted, can also adopt first processing policy corresponding with the first multicast distribution tree (being specially the first public network acquiescence multicast distribution tree in this step), the the first public network multicast message transmitting by this first multicast distribution tree in public network is processed, this handling process can be carried out by this PE, also can be carried out by the forwarding unit of this first public network multicast message of public network repeating, public network destination address that specifically can be based on carrying in the first public network multicast message, i.e. the first public network default set address, adopt relative strategy to process.
Concrete, this first processing policy specifically can comprise charge on traffic strategy or service quality QOS strategy, also can comprise charge on traffic strategy and QOS strategy, corresponding processing is charge on traffic processing and QOS processes.Specific strategy can adopt various strategy of the prior art, is no longer described in detail at this.
Step S505, use the second public network default set address of acquiescence multicast group corresponding to MVPN, this private network multicast data message is encapsulated as to the second public network multicast message that public network destination address is this second public network default set address.
Specifically can adopt following encapsulation process to this private network multicast data message:
PE determines the interface identifier of the interface that receives this private network multicast data message, can determine the network identity of the MVPN under this private network multicast data message based on this interface identifier, thereby determine the second public network default set address of the acquiescence multicast group that this MVPN is corresponding, and this second public network default set address is corresponding with data message type, be specially: determining after the network identity of the MVPN under this private network multicast protocol message, from group address table corresponding to this network identity, based on data message type, search the corresponding relation of type of message and public network default set address, determine the second public network default set address corresponding with data message type,
This second public network default set address that use is determined, is encapsulated as by this private network multicast data message the second public network multicast message that public network destination address is this second public network default set address.
Step S506, PE are carrying out after encapsulation process this private network multicast data message, pass through the second public network acquiescence multicast distribution tree of the acquiescence multicast group of this MVPN in public network, and this second public network multicast message is carried out to multicast transmission; Wherein, the second public network acquiescence multicast distribution tree is corresponding with the second public network default set address.
Be specifically as follows: PE this second public network default set address based on determining, find out the second corresponding public network acquiescence multicast distribution tree, in the second public network acquiescence multicast distribution tree, preserving for public network destination address is the forwarding interface information of the public network multicast message of the second public network default set address, thereby by this second public network acquiescence multicast distribution tree, this second public network multicast message is forwarded from forwarding interface corresponding to this forwarding interface information.
For the foundation of the second public network acquiescence multicast distribution tree, can adopt variety of way of the prior art, be no longer described in detail at this.
PE forwards this second public network multicast message in public network by the second public network acquiescence multicast distribution tree after, this the second public network multicast message will be forwarded to other PE of acquiescence multicast group of this MVPN, in this process, transferring equipment in public network can be according to the public network destination address of this second public network multicast message, the second public network default set address, carries out message repeating; Other PE carries out decapsulation processing to this second public network multicast message receiving, obtain this private network multicast data message, and be transmitted to the user terminal that has reception demand being connected, specifically can forward by the private network destination address based on carrying in this private network multicast data message.
Preferably, in the process that the second public network multicast message is transmitted, can also adopt second processing policy corresponding with the second multicast distribution tree (being specially the second public network acquiescence multicast distribution tree in this step), the the second public network multicast message transmitting by this second multicast distribution tree in public network is processed, this handling process can be carried out by this PE, also can be carried out by the forwarding unit of this second public network multicast message of public network repeating, public network destination address that specifically can be based on carrying in the second public network multicast message, i.e. the second public network default set address, adopt relative strategy to process.
Concrete, this second processing policy specifically can comprise charge on traffic strategy or QOS strategy, also can comprise charge on traffic strategy and QOS strategy, corresponding processing is wandering charging processing and QOS processes.Specific strategy can adopt various strategy of the prior art, is no longer described in detail at this.
Adopt the above-mentioned multicast message transmission method in the embodiment of the present invention 1, by different multicast distribution tree transmission private network multicast protocol message and private network multicast data message, thereby in transmitting procedure, multicast distribution tree difference that can be based on adopted, realizes the differentiation to private network multicast protocol message and private network multicast data message.
Further, due to the differentiation that can realize private network multicast protocol message and private network multicast data message, thereby can process according to different processing policies for private network multicast protocol message and private network multicast data message.
But, the multicast message transmission method providing in above-described embodiment 1, for the multicast transmission of private network multicast data message, specifically transmit by the second public network acquiescence multicast distribution tree of acquiescence multicast group corresponding to this MVPN, known based on prior art, the acquiescence multicast group that MVPN is corresponding has comprised the connected PE of all user terminals in this MVPN, but for private network multicast data message, be not in this MVPN except transmitting terminal other all user terminals all have the reception demand of this private network multicast data message, thereby be not also the reception demand that other all PE except transmitting terminal PE in the acquiescence multicast group that this MVPN is corresponding all have this private network multicast data message, so, transmit this private network multicast data message to the PE of the reception demand of this private network multicast data message not, cause the waste of bandwidth resources, for solving this technical problem, multicast message transmission method in following embodiment 2 is proposed.
Embodiment 2:
In the present embodiment 2 for the multicast transmission of private network multicast protocol message, specifically transmit by the first public network acquiescence multicast distribution tree of acquiescence multicast group corresponding to this MVPN, for the multicast transmission of private network multicast data message, concrete corresponding by this MVPN, and the public network data multicast distribution tree of the data multicast group corresponding with private network destination address in this private network multicast data message transmits.
The flow chart that the multicast message transmission method providing in the embodiment of the present invention 2 is provided, specifically comprises following treatment step:
The private network multicast message that user terminal in step S601, MVPN need to carry out multicast transmission sends to coupled PE; In this private network multicast message, carry source address and private network destination address.
Step S602, this PE receive after this private network multicast message of this user terminal transmission, determine the type of this private network multicast message, determine it is private network multicast protocol message or private network multicast data message.Specifically can determine according to the value of type field in message, also can determine according to the private network destination address carrying in message, because some private network destination addresses are exclusively used in transmission protocol message, when some private network destination addresses, be exclusively used in data message transmission.
In the time that definite this private network multicast message is private network multicast protocol message, enter step S603.
In the time that definite this private network multicast message is private network multicast data message, enter step S605.
Step S603, use the first public network default set address of acquiescence multicast group corresponding to MVPN, this private network multicast protocol message is encapsulated as to the first public network multicast message that public network destination address is this first public network default set address.
Specifically can adopt following encapsulation process to this private network multicast protocol message:
PE determines the interface identifier of the interface that receives this private network multicast protocol message, can determine the network identity of the MVPN under this private network multicast protocol message based on this interface identifier, thereby determine the first public network default set address of the acquiescence multicast group that this MVPN is corresponding, and this first public network default set address is corresponding with protocol massages type, be specially: determining after the network identity of the MVPN under this private network multicast protocol message, from group address table corresponding to this network identity, based on protocol massages type, search the corresponding relation of type of message and public network default set address, determine the first public network default set address corresponding with protocol massages type,
This first public network default set address that use is determined, is encapsulated as by this private network multicast protocol message the first public network multicast message that public network destination address is this first public network default set address.
Step S604, PE are carrying out after encapsulation process this private network multicast protocol message, pass through the first public network acquiescence multicast distribution tree of the acquiescence multicast group of this MVPN in public network, and this first public network multicast message is carried out to multicast transmission; Wherein, the first public network acquiescence multicast distribution tree is corresponding with the first public network default set address.
Be specifically as follows: PE this first public network default set address based on determining, find out the first corresponding public network acquiescence multicast distribution tree, in the first public network acquiescence multicast distribution tree, preserving for public network destination address is the forwarding interface information of the public network multicast message of the first public network default set address, thereby by this first public network acquiescence multicast distribution tree, this first public network multicast message is forwarded from forwarding interface corresponding to this forwarding interface information.
For the foundation of the first public network acquiescence multicast distribution tree, can adopt variety of way of the prior art, be no longer described in detail at this.
PE forwards this first public network multicast message in public network by the first public network acquiescence multicast distribution tree after, this the first public network multicast message will be forwarded to other PE of acquiescence multicast group of this MVPN, in this process, transferring equipment in public network can be according to the public network destination address of this first public network multicast message, the first public network default set address, carries out message repeating; Other PE carries out decapsulation processing to this first public network multicast message receiving, obtain this private network multicast protocol message, and be transmitted to the user terminal that has reception demand being connected, specifically can forward by the private network destination address based on carrying in this private network multicast protocol message.
Preferably, in the process that the first public network multicast message is transmitted, can also adopt first processing policy corresponding with the first multicast distribution tree (being specially the first public network acquiescence multicast distribution tree in this step), the the first public network multicast message transmitting by this first multicast distribution tree in public network is processed, this handling process can be carried out by this PE, also can be carried out by the forwarding unit of this first public network multicast message of public network repeating, public network destination address that specifically can be based on carrying in the first public network multicast message, i.e. the first public network default set address, adopt relative strategy to process.
Concrete, this first processing policy specifically can comprise charge on traffic strategy or service quality QOS strategy, also can comprise charge on traffic strategy and QOS strategy, corresponding processing is wandering charging processing and QOS processes.Specific strategy can adopt various strategy of the prior art, is no longer described in detail at this.
Step S605, use are corresponding with MVPN, and the public network data group address of the data multicast group corresponding with source address in this private network multicast data message and private network destination address, is encapsulated as by this private network multicast data message the 3rd public network multicast message that public network destination address is this public network data group address.
Wherein, corresponding with MVPN, and the public network data group address of the data multicast group corresponding with source address in this private network multicast data message and private network destination address, for the address that the transmission for the private network multicast data message of this source address and this private network destination address distributes in advance, in this data multicast group, included PE is the PE that has the user terminal of the transmission demand of the private network multicast data message of this source address and this private network destination address to be connected.
Specifically can adopt following encapsulation process to this private network multicast data message:
PE determines the interface identifier of the interface that receives this private network multicast data message, can determine the network identity of the MVPN under this private network multicast data message based on this interface identifier, PE also obtains the source address and the destination address that carry from this private network multicast data message receiving, can determine that based on this source address and this private network destination address the MVPN under this private network multicast data message is corresponding, and the data multicast group corresponding with this source address and this private network destination address, thereby determine the public network data group address of this data multicast group that this MVPN is corresponding, and this public network data group address or corresponding with data message type, be specially: determining after the network identity of the MVPN under this private network multicast protocol message, from group address table corresponding to this network identity, based on this source address, this private network destination address and data message type, search source address, the corresponding relation of private network destination address and type of message and public network data group address, determine and this source address, the public network data group address that this private network destination address and data message type are corresponding,
This public network data group address that use is determined, is encapsulated as by this private network multicast data message the 3rd public network multicast message that public network destination address is this public network data group address.
Step S606, PE are carrying out after encapsulation process this private network multicast data message, pass through the public network data multicast distribution tree of this data multicast group of this MVPN in public network, and the 3rd public network multicast message is carried out to multicast transmission; Wherein, public network data multicast distribution tree is corresponding with public network data group address.
Be specifically as follows: PE this public network data group address based on determining, find out corresponding public network data multicast distribution tree, in public network data multicast distribution tree, preserve for public network destination address is the forwarding interface information of the public network multicast message of public network data group address, thereby by this public network data multicast distribution tree, the 3rd public network multicast message is forwarded from forwarding interface corresponding to this forwarding interface information.
Wherein, public network data multicast distribution tree can be used for message to carry out multicast transmission between the each PE in public network data multicast group, for the foundation of public network data multicast distribution tree, specifically can between each PE of acquiescence multicast group, send and join message by acquiescence multicast distribution tree, in joining message, carry private network destination address and corresponding public network data group address, thereby realize the foundation of the public network data multicast distribution tree of the public network data multicast group with each PE composition that each user terminal of identical private network destination address connects.
PE forwards the 3rd public network multicast message in public network by public network data multicast distribution tree after, the 3rd public network multicast message will be forwarded to other PE of this data multicast group that this MVPN is corresponding, in this process, transferring equipment in public network can be according to the public network destination address of the 3rd public network multicast message, be public network data group addresss, carry out message repeating; Other PE carries out decapsulation processing to the 3rd public network multicast message receiving, obtain this private network multicast data message, and be transmitted to the user terminal that has reception demand being connected, specifically can forward by the private network destination address based on carrying in this private network multicast data message.
Preferably, in the process that the 3rd public network multicast message is transmitted, can also adopt second processing policy corresponding with the second multicast distribution tree (being specially public network data multicast distribution tree in this step), the 3rd public network multicast message transmitting by this second multicast distribution tree in public network is processed, this handling process can be carried out by this PE, also can be carried out by the forwarding unit of public network repeating the 3rd public network multicast message, public network destination address that specifically can be based on carrying in the 3rd public network multicast message, be public network data group addresss, adopt relative strategy to process.
Concrete, this second processing policy specifically can comprise charge on traffic strategy or QOS strategy, also can comprise charge on traffic strategy and QOS strategy, corresponding processing is wandering charging processing and QOS processes.Specific strategy can adopt various strategy of the prior art, is no longer described in detail at this.
Adopt the above-mentioned multicast message transmission method in the embodiment of the present invention 2, not only realize the differentiation to private network multicast protocol message and private network multicast data message, and process according to different processing policies for private network multicast protocol message and private network multicast data message, can also avoid transmitting this private network multicast data message to the PE of the reception demand of this private network multicast data message not, reduce the waste of bandwidth resources.
Preferably, for the multicast transmission of private network multicast data message, can also be by the scheme that uses the second public network acquiescence multicast distribution tree to transmit in above-described embodiment 1, combine with the scheme that uses public network data multicast distribution tree to transmit in above-described embodiment 2, first adopt the scheme in above-described embodiment 2 to determine corresponding public network data group address, after determining, use corresponding data multicast distribution tree to carry out multicast transmission, after not determining, adopt the scheme in above-described embodiment 1 to determine the second corresponding public network default set address, and use the second corresponding acquiescence multicast distribution tree to carry out multicast transmission.The concrete handling process of this scheme combining can, with reference to the description in above-described embodiment 1 and embodiment 2, no longer be described in detail at this.
Embodiment 3:
Based on same inventive concept, the multicast message transmission method providing according to the above embodiment of the present invention, correspondingly, the embodiment of the present invention 3 also provides a kind of provider edge equipment, and its structural representation as shown in Figure 7, specifically comprises:
Receiving element 701, needs to carry out the private network multicast message of multicast transmission for receiving group Virtual Private Network MVPN;
Determining unit 702, for determining that the described private network multicast message receiving is private network multicast protocol message or private network multicast data message;
The first transmission unit 703 in the time that definite described private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to described MVPN, carries out multicast transmission to described private network multicast protocol message in public network;
The second transmission unit 704 in the time that definite described private network multicast message is private network multicast data message, by the second multicast distribution tree of multicast group corresponding to described MVPN, carries out multicast transmission to described private network multicast data message in public network.
Preferably, the first transmission unit 703, specifically for using the first public network default set address of the acquiescence multicast group that described MVPN is corresponding, described private network multicast protocol message is encapsulated as to the first public network multicast message that public network destination address is described the first public network default set address; And in public network, the first public network by described acquiescence multicast group is given tacit consent to multicast distribution tree, and described the first public network multicast message is carried out to multicast transmission.
Preferably, the second transmission unit 704, specifically for using the second public network default set address of the acquiescence multicast group that described MVPN is corresponding, described private network multicast data message is encapsulated as to the second public network multicast message that public network destination address is described the second public network default set address; And in public network, the second public network by described acquiescence multicast group is given tacit consent to multicast distribution tree, and described the second public network multicast message is carried out to multicast transmission; Or
Corresponding with described MVPN specifically for using, and the public network data group address of the data multicast group corresponding with source address in described private network multicast data message and private network destination address, is encapsulated as by described private network multicast data message the 3rd public network multicast message that public network destination address is described public network data group address; And in public network by the public network data multicast distribution tree of described data multicast group, described the 3rd public network multicast message is carried out to multicast transmission.
Preferably, above-mentioned provider edge equipment, also comprises:
The first processing unit 705, for adopting first processing policy corresponding with described the first multicast distribution tree, to processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network;
The second processing unit 706, for adopting second processing policy corresponding with described the second multicast distribution tree, to processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network.
Preferably, the first processing unit 705, specifically for adopting first flow charging policy and/or the first service quality Q OS strategy corresponding with described the first multicast distribution tree, to carry out charge on traffic processing and/or QOS processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network;
The second processing unit 706, specifically for adopting second flow charging policy and/or the two QOS strategy corresponding with described the second multicast distribution tree, to carry out charge on traffic processing and/or QOS processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network.
In sum, the scheme that the embodiment of the present invention provides, comprising: PE receives the private network multicast message that needs to carry out multicast transmission in MVPN; And determine that this private network multicast message receiving is private network multicast protocol message or private network multicast data message; And in the time that definite this private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to this MVPN, in public network, this private network multicast protocol message is carried out to multicast transmission; In the time that definite this private network multicast message is private network multicast data message, by the second multicast distribution tree of multicast group corresponding to this MVPN, in public network, this private network multicast data message is carried out to multicast transmission.The scheme that adopts the embodiment of the present invention to provide, when transmission is encapsulated as the private network multicast message of public network multicast message in public network, realizes the differentiation to private network multicast protocol message and private network multicast data message.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a multicast message transmission method, is characterized in that, comprising:
In provider edge equipment PE receiving group Virtual Private Network MVPN, need to carry out the private network multicast message of multicast transmission;
Determine that the described private network multicast message receiving is private network multicast protocol message or private network multicast data message;
In the time that definite described private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to described MVPN, in public network, described private network multicast protocol message is carried out to multicast transmission;
In the time that definite described private network multicast message is private network multicast data message, use corresponding with described MVPN, and the public network data group address of the data multicast group corresponding with source address in described private network multicast data message and private network destination address, described private network multicast data message is encapsulated as to the 3rd public network multicast message that public network destination address is described public network data group address, and in public network by the public network data multicast distribution tree of described data multicast group, described the 3rd public network multicast message is carried out to multicast transmission; In the time cannot determining described public network data group address, use the second public network default set address of the acquiescence multicast group that described MVPN is corresponding, described private network multicast data message is encapsulated as to the second public network multicast message that public network destination address is described the second public network default set address, and the second public network by described acquiescence multicast group is given tacit consent to multicast distribution tree in public network, described the second public network multicast message is carried out to multicast transmission, and described public network data multicast distribution tree and described the second public network acquiescence multicast distribution tree are the second multicast distribution tree.
2. the method for claim 1, is characterized in that, by the first multicast distribution tree of multicast group corresponding to described MVPN, in carrier network, described private network multicast protocol message is carried out to multicast transmission, specifically comprises:
Use the first public network default set address of the acquiescence multicast group that described MVPN is corresponding, described private network multicast protocol message is encapsulated as to the first public network multicast message that public network destination address is described the first public network default set address; And
In public network, by the first public network acquiescence multicast distribution tree of described acquiescence multicast group, described the first public network multicast message is carried out to multicast transmission.
3. the method as described in as arbitrary in claim 1-2, is characterized in that, also comprises:
Adopt first processing policy corresponding with described the first multicast distribution tree, to processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network;
Adopt second processing policy corresponding with described the second multicast distribution tree, to processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network.
4. method as claimed in claim 3, is characterized in that, adopts first processing policy corresponding with described the first multicast distribution tree, to processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network, specifically comprises:
Adopt the first flow charging policy corresponding with described the first multicast distribution tree and/or first service quality Q OS strategy, to carry out charge on traffic processing and/or QOS processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network;
Adopt second processing policy corresponding with described the second multicast distribution tree, to processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network, specifically comprise:
Adopt second flow charging policy and/or the two QOS strategy corresponding with described the second multicast distribution tree, to carry out charge on traffic processing and/or QOS processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network.
5. a provider edge equipment PE, is characterized in that, comprising:
Receiving element, needs to carry out the private network multicast message of multicast transmission for receiving group Virtual Private Network MVPN;
Determining unit, for determining that the described private network multicast message receiving is private network multicast protocol message or private network multicast data message;
The first transmission unit in the time that definite described private network multicast message is private network multicast protocol message, by the first multicast distribution tree of multicast group corresponding to described MVPN, carries out multicast transmission to described private network multicast protocol message in public network;
The second transmission unit, for in the time that definite described private network multicast message is private network multicast data message, use corresponding with described MVPN, and the public network data group address of the data multicast group corresponding with source address in described private network multicast data message and private network destination address, described private network multicast data message is encapsulated as to the 3rd public network multicast message that public network destination address is described public network data group address, and in public network by the public network data multicast distribution tree of described data multicast group, described the 3rd public network multicast message is carried out to multicast transmission; In the time cannot determining described public network data group address, use the second public network default set address of the acquiescence multicast group that described MVPN is corresponding, described private network multicast data message is encapsulated as to the second public network multicast message that public network destination address is described the second public network default set address, and the second public network by described acquiescence multicast group is given tacit consent to multicast distribution tree in public network, described the second public network multicast message is carried out to multicast transmission, and described public network data multicast distribution tree and described the second public network acquiescence multicast distribution tree are the second multicast distribution tree.
6. provider edge equipment as claimed in claim 5, it is characterized in that, described the first transmission unit, specifically for using the first public network default set address of the acquiescence multicast group that described MVPN is corresponding, described private network multicast protocol message is encapsulated as to the first public network multicast message that public network destination address is described the first public network default set address; And in public network, the first public network by described acquiescence multicast group is given tacit consent to multicast distribution tree, and described the first public network multicast message is carried out to multicast transmission.
7. the provider edge equipment as described in as arbitrary in claim 5-6, is characterized in that, also comprises:
The first processing unit, for adopting first processing policy corresponding with described the first multicast distribution tree, to processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network;
The second processing unit, for adopting second processing policy corresponding with described the second multicast distribution tree, to processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network.
8. provider edge equipment as claimed in claim 7, it is characterized in that, described the first processing unit, specifically for adopting first flow charging policy and/or the first service quality Q OS strategy corresponding with described the first multicast distribution tree, to carry out charge on traffic processing and/or QOS processing by the described private network multicast protocol message of described the first multicast distribution tree transmission in public network;
Described the second processing unit, specifically for adopting second flow charging policy and/or the two QOS strategy corresponding with described the second multicast distribution tree, to carry out charge on traffic processing and/or QOS processing by the described private network multicast data message of described the second multicast distribution tree transmission in public network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110243465.6A CN102299848B (en) | 2011-08-23 | 2011-08-23 | Multicast message transmission method and provider edge device (PE) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110243465.6A CN102299848B (en) | 2011-08-23 | 2011-08-23 | Multicast message transmission method and provider edge device (PE) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102299848A CN102299848A (en) | 2011-12-28 |
| CN102299848B true CN102299848B (en) | 2014-07-02 |
Family
ID=45360035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110243465.6A Active CN102299848B (en) | 2011-08-23 | 2011-08-23 | Multicast message transmission method and provider edge device (PE) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102299848B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108632147B (en) * | 2013-06-29 | 2022-05-13 | 华为技术有限公司 | Message multicast processing method and device |
| CN105376161B (en) * | 2014-08-28 | 2019-03-08 | 新华三技术有限公司 | Multicast distribution tree switching method and device |
| CN106161258B (en) * | 2015-03-25 | 2019-10-01 | 华为技术有限公司 | It is used for transmission the method, equipment and system of multicast protocol message |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364888A (en) * | 2008-09-16 | 2009-02-11 | 杭州华三通信技术有限公司 | A data multicast address multiplex method and a backbone network edge apparatus |
| CN101442422A (en) * | 2008-12-17 | 2009-05-27 | 华为技术有限公司 | Data transmission method, system and device |
| CN101459606A (en) * | 2008-12-31 | 2009-06-17 | 华为技术有限公司 | Extranet networking method, system and device for multicast VPN |
| CN101827023A (en) * | 2010-03-25 | 2010-09-08 | 杭州华三通信技术有限公司 | Processing method of data and device thereof |
-
2011
- 2011-08-23 CN CN201110243465.6A patent/CN102299848B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364888A (en) * | 2008-09-16 | 2009-02-11 | 杭州华三通信技术有限公司 | A data multicast address multiplex method and a backbone network edge apparatus |
| CN101442422A (en) * | 2008-12-17 | 2009-05-27 | 华为技术有限公司 | Data transmission method, system and device |
| CN101459606A (en) * | 2008-12-31 | 2009-06-17 | 华为技术有限公司 | Extranet networking method, system and device for multicast VPN |
| CN101827023A (en) * | 2010-03-25 | 2010-09-08 | 杭州华三通信技术有限公司 | Processing method of data and device thereof |
Non-Patent Citations (6)
| Title |
|---|
| BGP/MPLS VPN环境下支持QoS的组播方案;李海华 等;《计算机工程》;20050930;第31卷(第17期);全文 * |
| E. Rosen 等.Cisco Systems" Solution for Multicast in BGP/MPLS IP VPNs.《IETF RFC6037》.2010, * |
| E. Rosen.BGP/MPLS IP Virtual Private Networks (VPNs).《IETF RFC4364》.2006, * |
| IP组播在BGP/MPLS VPN环境中的实现与分析;任宇清;《现代电信科技》;20050630(第6期);全文 * |
| 任宇清.IP组播在BGP/MPLS VPN环境中的实现与分析.《现代电信科技》.2005,(第6期), |
| 李海华 等.BGP/MPLS VPN环境下支持QoS的组播方案.《计算机工程》.2005,第31卷(第17期), |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102299848A (en) | 2011-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8339973B1 (en) | Multicast traceroute over MPLS/BGP IP multicast VPN | |
| US9344382B2 (en) | Multicast support for internet protocol version four residual deployment via encapsulation or translation | |
| CN101645790B (en) | Switching-over method, device and system of multicast distribution tree | |
| US20100329252A1 (en) | Method and Apparatus for Enabling Multicast Route Leaking Between VRFs in Different VPNs | |
| WO2017114153A1 (en) | Service function chaining (sfc) communication method and device | |
| CN102137000B (en) | Method, device and system for establishing switching multicast distribution tree | |
| US9203631B2 (en) | Multicast distribution trees for mRSVP-TE based multicast virtual private networks | |
| JP4820950B2 (en) | Route-optimized multicast traffic in mobile network nodes | |
| US9160683B2 (en) | Providing PIM-SSM support for MRSVP-TE based multicast virtual private networks | |
| CN104954265A (en) | Method for sending multicast message and switch | |
| CN107547342A (en) | Message broadcasting method and apparatus based on VXLAN tunnels | |
| CN102571375B (en) | Multicast forwarding method and device as well as network device | |
| US8675658B2 (en) | Using multiple IGMP queriers in a layer 2 network | |
| CN104468371A (en) | Multicast service message processing method and device | |
| CN103780509A (en) | Message forwarding method and routing forwarding device | |
| US10708196B2 (en) | Modifications of headend forwarding rules to join wide area network branch hosts to multicast groups | |
| CN101119222B (en) | Method, device and system for implementing multicast of HOPE network | |
| CN103716244B (en) | Method and device enabling extra-VPN forwarding of multicasts to be achieved | |
| CN102299848B (en) | Multicast message transmission method and provider edge device (PE) | |
| CN105743797A (en) | Multicasting VPN (Virtual Private Network) tunnel building method based on interface binding | |
| JP2006074132A (en) | Multicast communication method and gateway device | |
| CN104092554A (en) | Multicast distribution tree establishment method and device | |
| CN102420772A (en) | Tunnel message transmission and receiving methods and devices | |
| CN103685040B (en) | MD (multicast domain) based multicast VPN (virtual private network) traffic optimization method and equipment | |
| JP2014023150A (en) | Multicast transmission using unicast protocol |
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 |