CN103686440A - Method converting three layer multicast into two layer multicast and related devices - Google Patents
Method converting three layer multicast into two layer multicast and related devices Download PDFInfo
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- CN103686440A CN103686440A CN201210351561.7A CN201210351561A CN103686440A CN 103686440 A CN103686440 A CN 103686440A CN 201210351561 A CN201210351561 A CN 201210351561A CN 103686440 A CN103686440 A CN 103686440A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/64—Addressing
- H04N21/6405—Multicasting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/611—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for multicast or broadcast
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Abstract
The embodiment of the invention discloses a method converting three layer multicast into two layer multicast and related devices. The method comprises the steps that when video stream data are acquired, a multicast three layer device searches a configured forwarding list item from the three layer multicast to the two layer multicast according to the multicast group address and the video source address of the video stream data; and the multicast three layer device adds a two layer multicast list item for the video stream data according to the searched forwarding list item from the three layer multicast to the two layer multicast, and forwards the video stream data added with the two layer multicast list item to a multicast two layer device. According to the embodiment of the invention, network interconnection cost can be reduced, and the two layer device is not limited by a PIM protocol.
Description
Technical field
The present invention relates to the communications field, relate in particular to method and relevant device that three layers of multicast are converted to Layer 2 Multicast.
Background technology
When user's on-demand multicasting program, STB (Set Top Box, Set Top Box) receive EPG (Electronic Program Guide, electric program menu), by user, in described EPG, selected the program that oneself will watch, then to multicast two-layer equipment, send IGMP (Internet Group Management Protocol, Internet Group Management Protocol) program that request user will watch, multicast two-layer equipment receives after user's IGMP request, by PIM (Protocol Independent Multicast, Protocol Independent Multicast) agreement sends and joins message to the router (hereinafter referred to as multicast three-layer equipment) in IP metropolitan area network, the video flowing that finally user will be watched is incorporated in Set Top Box.
Current, user belongs to VLAN different under multicast two-layer equipment (Virtual Local Area Network conventionally, VLAN) in, the a certain video flowing of user under multicast two-layer equipment (such as the user under Vlan2) program request (such as, multicast ip address is G1, source IP address is S2) time, this multicast two-layer equipment need to need to (can be VPN (the Virtual Private Network multicast three-layer equipment from which three layer interface by PIM treaty shopping, Virtual Private Network) information) from multicast three-layer equipment, obtain video stream data, and according to multicast forwarding list item ((G1, S2)-> (G1, Vlan2)) video is handed down to the user that under Vlan2, this program is arrived in program request.In such video request-program process, need multicast two-layer equipment to support PIM agreement just can complete three layers of conversion (being the forwarding of video flowing from multicast three-layer equipment to multicast two-layer equipment) that multicasts to Layer 2 Multicast, the cost of network interconnection is higher.
Summary of the invention
Method and relevant device that the embodiment of the present invention provides three layers of multicast to be converted to Layer 2 Multicast, to reduce network interconnection cost, and make two-layer equipment not be subject to the restriction of PIM agreement.
First aspect present invention provides a kind of three layers of multicast to be converted to the method for Layer 2 Multicast, can comprise:
When getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the multicast group address of described video stream data and video source address search;
Described multicast three-layer equipment is according to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
In the possible execution mode of the first, described in get video stream data before, can comprise:
Described multicast three-layer equipment configures described three layers of forwarding-table item that multicasts to Layer 2 Multicast, described forwarding-table item comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address and video source address, and described Layer 2 Multicast list item comprises multicast group address and Layer 2 virtual private network sign.
In conjunction with the possible execution mode of the first of first aspect, in the possible execution mode of the second, three layers of forwarding-table item that multicasts to Layer 2 Multicast of described multicast three-layer equipment configuration comprise:
At three layers of forwarding-table item that multicasts to Layer 2 Multicast described in the moving static configuration of described multicast three-layer equipment left-hand seat.
In conjunction with the possible execution mode of the second of first aspect, in the third possible execution mode, after the forwarding-table item that described in the moving static configuration of described multicast three-layer equipment left-hand seat, three layers multicast to Layer 2 Multicast, comprising:
Described multicast three-layer equipment sends to multicast two-layer equipment by described three layers of forwarding-table item that multicasts to Layer 2 Multicast of configuration, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
In conjunction with the possible execution mode of the first of first aspect, in the 4th kind of possible execution mode, described multicast three-layer equipment configures described three layers of forwarding-table item that multicasts to Layer 2 Multicast and comprises:
Described multicast three-layer equipment receives Virtual Private Network sign, multicast group address and video source address from multicast two-layer equipment, and according to the described Virtual Private Network sign, multicast group address and the video source address that receive, automatically generate described three layers of forwarding-table item that multicasts to Layer 2 Multicast.
The 4th kind of possible execution mode in conjunction with first aspect, in the 5th kind of possible execution mode, to be described multicast three-layer equipment send to described multicast three-layer equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for described Virtual Private Network sign, multicast group address and video source address.
In conjunction with first aspect, in the 6th kind of possible execution mode, described multicast three-layer equipment comprises router;
Described multicast two-layer equipment comprises two layers of access device.
Accordingly, a kind of multicast three-layer equipment that second aspect present invention provides, can comprise:
Receiver module, for obtaining video stream data;
Search module, for when described receiver module receives video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure according to the multicast group address of described video stream data and video source address search;
Sending module, described in basis, search described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that module searches goes out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
In the possible execution mode of the first, described multicast three-layer equipment also comprises:
Configuration module, for configuring described three layers of forwarding-table item that multicasts to Layer 2 Multicast, described forwarding-table item comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address and video source address, and described Layer 2 Multicast list item comprises multicast group address and Layer 2 virtual private network sign.
In conjunction with the possible execution mode of the first of second aspect, in the possible execution mode of the second, described configuration module is specifically at three layers of forwarding-table item that multicasts to Layer 2 Multicast described in the moving static configuration of described multicast three-layer equipment left-hand seat.
In conjunction with the possible execution mode of the second of second aspect, in the third possible execution mode, described sending module is also for sending to multicast two-layer equipment by three layers of forwarding-table item that multicasts to Layer 2 Multicast of this multicast three-layer equipment configuration, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
In conjunction with the possible execution mode of the first of second aspect, in the 4th kind of possible execution mode, described receiver module is also for receiving Virtual Private Network sign, multicast group address and video source address from multicast two-layer equipment;
Described configuration module generates described three layers of forwarding-table item that multicasts to Layer 2 Multicast automatically specifically for described Virtual Private Network sign, multicast group address and the video source address receiving according to described receiver module.
The 4th kind of possible execution mode in conjunction with second aspect, in the 5th kind of possible execution mode, to be described multicast three-layer equipment send to described multicast three-layer equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for Virtual Private Network sign, multicast group address and video source address.
Third aspect present invention provides a kind of multi-cast system, can comprise:
Multicast three-layer equipment, be used for obtaining video stream data, and when receiving video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure according to the multicast group address of described video stream data and video source address search, and according to the described described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to multicast two-layer equipment;
Multicast two-layer equipment, is transmitted to corresponding user for the video stream data that described multicast three-layer equipment is turned.
Therefore, in feasible execution modes more of the present invention, when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the video source address search of described video stream data; And described multicast three-layer equipment is according to the forwarding-table item finding out, described video stream data is transmitted to described multicast two-layer equipment, thus, can make two-layer equipment in the situation that not needing to support PIM agreement, from three-layer equipment, get video stream data, make two-layer equipment not be subject to the restriction of PIM agreement, on this basis, reduced network interconnection cost.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment mono-of three layers of multicast of the present invention method of being converted to Layer 2 Multicast;
Fig. 2 is the schematic flow sheet of the embodiment bis-of three layers of multicast of the present invention method of being converted to Layer 2 Multicast;
Fig. 3 is the schematic flow sheet of the embodiment tri-of three layers of multicast of the present invention method of being converted to Layer 2 Multicast;
Fig. 4 is that the structure of the embodiment mono-of multicast three-layer equipment of the present invention forms schematic diagram;
Fig. 5 is that the structure of the embodiment bis-of multicast three-layer equipment of the present invention forms schematic diagram;
Fig. 6 is that the structure of the embodiment tri-of multicast three-layer equipment of the present invention forms schematic diagram;
Fig. 7 is that the structure of the embodiment tetra-of multicast three-layer equipment of the present invention forms schematic diagram.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
In feasible execution modes more of the present invention, when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the multicast group address of described video stream data and video source address search; Described multicast three-layer equipment is according to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.Thus, can make two-layer equipment in the situation that not needing to support PIM agreement, from three-layer equipment, get video stream data, make two-layer equipment not be subject to the restriction of PIM agreement, on this basis, reduce network interconnection cost.
Fig. 1 is the schematic flow sheet of the embodiment mono-of three layers of multicast of the present invention method of being converted to Layer 2 Multicast.As shown in Figure 1, the method that three layers of multicast of the present invention are converted to Layer 2 Multicast can comprise:
Step S110, when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the multicast group address of described video stream data and video source address search.
Step S111, described multicast three-layer equipment is according to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
In some feasible execution modes, forwarding-table item of the present invention comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address (Group, follow-up referred to as G) and video source address (Source, follow-up referred to as S), described Layer 2 Multicast list item comprises the mapping relations of multicast group address and Layer 2 virtual private network sign (VPN ID).
In some feasible execution modes, Virtual Private Network of the present invention sign can be VLAN ID, and (VLAN ID can note by abridging and is: any V), in pseudo-line sign (PWID), Layer 2 Tunneling Protocol ID (Tunnel).
In some feasible execution modes, when Virtual Private Network is designated VLAN ID, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure on multicast three-layer equipment can be as shown in table 1:
Table 1:
| Forwarding-table item |
| (G＝224.1.1.1，S＝61.2.2.2)-＞(G＝224.1.1.1，V＝2) |
Forwarding-table item in table 1 represents if it is 224.1.1.1 that multicast three-layer equipment is received multicast address, and source address is the video stream data of 61.2.2.2, video flowing is stamped to the label of VLAN 2, from port under this VLAN, forwards.
In some feasible execution modes, when Virtual Private Network is designated PWID, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure on multicast three-layer equipment can be as shown in table 2:
Table 2:
Forwarding-table item in table 2 represents if it is 224.1.1.1 that multicast three-layer equipment is received multicast address, and source address is the video stream data of 61.2.2.2, video flowing is stamped to the label of PWID=3, from PW under this PWID, forwards.
In some feasible execution modes, when Virtual Private Network is designated Tunnel, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure on multicast three-layer equipment can be as shown in table 2:
Table 3:
| Forwarding-table item |
| (G＝224.1.1.1，S＝61.2.2.2)-＞(G＝224.1.1.1，Tunnel＝3) |
Forwarding-table item in table 3 represents if it is 224.1.1.1 that multicast three-layer equipment is received multicast address, and source address is the video stream data of 61.2.2.2, video flowing is stamped to the label of Tunnel=3, from L2TP Tunnel under this Tunnel Identifier, forwards.
In some feasible execution modes, multicast three-layer equipment of the present invention comprises router.Multicast two-layer equipment of the present invention comprises two layers of access device, such as, user line access multiplexing equipment ((DSLAM, Digital Subscriber Line Access Multiplexer).
As from the foregoing, the present embodiment when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the video source address search of described video stream data; And described multicast three-layer equipment is according to the forwarding-table item finding out, described video stream data is transmitted to described multicast two-layer equipment, thus, can make two-layer equipment in the situation that not needing to support PIM agreement, from three-layer equipment, get video stream data, make two-layer equipment not be subject to the restriction of PIM agreement, on this basis, reduced network interconnection cost.
In specific implementation, on basis of the present invention, when multicast two-layer equipment receives after the video stream data that multicast three-layer equipment forwards, the forwarding-table item that can flow to user according to the video of multicast two-layer equipment static state or dynamic-configuration by the pushing video streaming obtaining to corresponding user.Wherein, the forwarding-table item that described video flows to user can comprise that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.The forwarding-table item of associative list 1, the forwarding-table item that the video on multicast two-layer equipment flows to user can be: (G=224.1.1.1, V=2)-> user 1.This list item represents that VLAN is 2 if having multicast address is 224.1.1.1, and source IP address is the video flowing of 61.2.2.2, this video flowing is sent to user 1.In specific implementation, the forwarding-table item that video on multicast two-layer equipment flows to user also can generate by the mode of manual static configuration, or from three-layer equipment, receive three layers of forwarding-table item that multicasts to Layer 2 Multicast of three-layer equipment configuration, and automatically generate according to described three layers of forwarding-table item that multicasts to Layer 2 Multicast.
Fig. 2 is the schematic flow sheet of the embodiment bis-of three layers of multicast of the present invention method of being converted to Layer 2 Multicast.As shown in Figure 2, the method that three layers of multicast of the present invention are converted to Layer 2 Multicast can comprise:
Step S210, at the moving three layers of forwarding-table item that multicasts to Layer 2 Multicast of static configuration of multicast three-layer equipment left-hand seat.
Step S211, when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the multicast group address of described video stream data and video source address search.
Step S212, described multicast three-layer equipment is according to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
In some feasible execution modes, the forwarding-table item of step S210 manual configuration can comprise: comprise that multicast group address and video source address are to the mapping relations of multicast group address and Virtual Private Network sign.
In some feasible execution modes, forwarding-table item of the present invention can reference table 1-table 3 (its content is as described in embodiment mono-), this not the content of his-and-hers watches 1 and table 3 repeat.
The difference of the present embodiment and embodiment mono-is, to configuring three layers of mode that multicasts to the forwarding-table item of Layer 2 Multicast, remarks additionally.
In some feasible execution modes, any moment after step S210, the present invention also can comprise: described multicast three-layer equipment sends to multicast two-layer equipment by three layers of forwarding-table item that multicasts to Layer 2 Multicast of configuration, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
As from the foregoing, on basis of the present invention, when multicast two-layer equipment receives after the video stream data that multicast three-layer equipment forwards, the forwarding-table item that can flow to user according to the video of multicast two-layer equipment static state or dynamic-configuration by the pushing video streaming obtaining to corresponding user.The forwarding-table item of associative list 1, the forwarding-table item that the video on multicast two-layer equipment flows to user can be: (G=224.1.1.1, V=2)-> user 1.This list item represents that VLAN is 2 if having multicast address is 224.1.1.1, and source IP address is the video flowing of 61.2.2.2, this video flowing is sent to user 1.
Fig. 3 is the schematic flow sheet of the embodiment tri-of three layers of multicast of the present invention method of being converted to Layer 2 Multicast.As shown in Figure 3, the method that three layers of multicast of the present invention are converted to Layer 2 Multicast can comprise:
Step S310, multicast three-layer equipment receives Virtual Private Network sign, multicast group address and video source address from multicast two-layer equipment, and according to the described Virtual Private Network sign, multicast group address and the video source address that receive, automatically generate three layers of forwarding-table item that multicasts to Layer 2 Multicast.
Step S311, when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the multicast group address of described video stream data and video source address search.
Step S312, described multicast three-layer equipment is according to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
In some feasible execution modes, step S310 automatically generates three layers of forwarding-table item that multicasts to Layer 2 Multicast and can comprise: comprise that multicast group address and video source address are to the mapping relations of multicast group address and Virtual Private Network sign.
In some feasible execution modes, forwarding-table item of the present invention can reference table 1-table 3 (its content is as described in embodiment mono-), this not the content of his-and-hers watches 1 and table 3 repeat.
The difference of the present embodiment and embodiment mono-is, to configuring three layers of mode that multicasts to the forwarding-table item of Layer 2 Multicast, remarks additionally.
In some feasible execution modes, any moment after step S310, the present invention also can comprise: described multicast three-layer equipment sends to multicast two-layer equipment by three layers of forwarding-table item that multicasts to Layer 2 Multicast of configuration, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
In some feasible execution modes, can be described multicast three-layer equipment send to described multicast three-layer equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for the Virtual Private Network sign receiving in the present embodiment step S310, multicast group address and video source address.
Hence one can see that, and in some feasible execution modes, three layers of action that multicasts to the forwarding-table item of Layer 2 Multicast of multicast three-layer equipment configuration can be triggered after multicast two-layer equipment receives the Internet Group Management Protocol request message of user's transmission.
As from the foregoing, on basis of the present invention, when multicast two-layer equipment receives after the video stream data that multicast three-layer equipment forwards, the forwarding-table item that can flow to user according to the video of multicast two-layer equipment static state or dynamic-configuration by the pushing video streaming obtaining to corresponding user.The forwarding-table item of associative list 1, the forwarding-table item that the video on multicast two-layer equipment flows to user can be: (G=224.1.1.1, V=2)-> user 1.This list item represents that VLAN is 2 if having multicast address is 224.1.1.1, and source IP address is the video flowing of 61.2.2.2, this video flowing is sent to user 1.
For better each scheme of implementing embodiment of the method for the present invention, the embodiment of the present invention also provides relevant apparatus.
Fig. 4 is that the structure of the embodiment mono-of the multicast three-layer equipment that can be used for implementing embodiment of the method for the present invention of the present invention forms schematic diagram.As shown in Figure 4, multicast three-layer equipment 4 of the present invention can comprise receiver module 41, search module 42 and sending module 43, wherein:
Sending module 43, the forwarding-table item finding out for searching module 42 described in basis, is transmitted to described multicast two-layer equipment by described video stream data.
In some feasible execution modes, forwarding-table item of the present invention comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address (Group, follow-up referred to as G) and video source address (Source, follow-up referred to as S), described Layer 2 Multicast list item comprises the mapping relations of multicast group address and Layer 2 virtual private network sign (VPN ID).
In some feasible execution modes, Virtual Private Network of the present invention sign can be VLAN ID, and (VLAN ID can note by abridging and is: any V), in pseudo-line sign (PWID), Layer 2 Tunneling Protocol ID (Tunnel).
In some feasible execution modes, when Virtual Private Network is designated VLAN ID, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure on multicast three-layer equipment can be as shown in table 1:
Table 1:
| Forwarding-table item |
| (G＝224.1.1.1，S＝61.2.2.2)-＞(G＝224.1.1.1，V＝2) |
Forwarding-table item in table 1 represents if it is 224.1.1.1 that multicast three-layer equipment is received multicast address, and source address is the video stream data of 61.2.2.2, video flowing is stamped to the label of VLAN 2, from port under this VLAN, forwards.
In some feasible execution modes, when Virtual Private Network is designated PWID, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure on multicast three-layer equipment can be as shown in table 2:
Table 2:
Forwarding-table item in table 2 represents if it is 224.1.1.1 that multicast three-layer equipment is received multicast address, and source address is the video stream data of 61.2.2.2, video flowing is stamped to the label of PWID=3, from PW under this PWID, forwards.
In some feasible execution modes, when Virtual Private Network is designated Tunnel, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure on multicast three-layer equipment can be as shown in table 2:
Table 3:
| Forwarding-table item |
| (G＝224.1.1.1，S＝61.2.2.2)-＞(G＝224.1.1.1，Tunnel＝3) |
Forwarding-table item in table 3 represents if it is 224.1.1.1 that multicast three-layer equipment is received multicast address, and source address is the video stream data of 61.2.2.2, video flowing is stamped to the label of Tunnel=3, from L2TP Tunnel under this Tunnel Identifier, forwards.
In some feasible execution modes, multicast three-layer equipment of the present invention comprises router.Multicast two-layer equipment of the present invention comprises two layers of access device, such as, user line access multiplexing equipment ((DSLAM, Digital Subscriber Line Access Multiplexer).
As from the foregoing, the present embodiment when getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the video source address search of described video stream data; And described multicast three-layer equipment is according to the forwarding-table item finding out, described video stream data is transmitted to described multicast two-layer equipment, thus, can make two-layer equipment in the situation that not needing to support PIM agreement, from three-layer equipment, get video stream data, make two-layer equipment not be subject to the restriction of PIM agreement, on this basis, reduced network interconnection cost.
Fig. 5 is that the structure of the embodiment bis-of the multicast three-layer equipment that can be used for implementing embodiment of the method for the present invention of the present invention forms schematic diagram.As shown in Figure 5, multicast three-layer equipment 5 of the present invention can comprise configuration module 50, receiver module 51, search module 52 and sending module 53, wherein:
Configuration module 50, for configuring three layers of forwarding-table item that multicasts to Layer 2 Multicast.Configuration module 50 is specifically for moving three layers of forwarding-table item that multicasts to Layer 2 Multicast of static configuration at described multicast three-layer equipment left-hand seat.Forwarding-table item of the present invention can reference table 1-table 3 (its content is as described in embodiment mono-), this not the content of his-and-hers watches 1 and table 3 repeat.
Receiver module 51, for obtaining video stream data.
Search module 52, for when described receiver module 51 receives video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure according to the video source address search of described video stream data;
Sending module 53, the forwarding-table item finding out for searching module 52 described in basis, is transmitted to described multicast two-layer equipment by described video stream data.
The difference of the present embodiment and embodiment mono-is, by three layers of mode that multicasts to the forwarding-table item of Layer 2 Multicast of 50 pairs of configurations of configuration module, remarks additionally.In addition, the receiver module 51 of the present embodiment, search module 52 and sending module 53 respectively with receiver module 41 in embodiment mono-, to search module 42 identical with sending module 43.
In some feasible execution modes, receiver module 51 is also for sending to multicast two-layer equipment by three layers of forwarding-table item that multicasts to Layer 2 Multicast of configuration module 50 configurations, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
As from the foregoing, on basis of the present invention, when multicast two-layer equipment receives after the video stream data that multicast three-layer equipment forwards, the forwarding-table item that can flow to user according to the video of multicast two-layer equipment static state or dynamic-configuration by the pushing video streaming obtaining to corresponding user.The forwarding-table item of associative list 1, the forwarding-table item that the video on multicast two-layer equipment flows to user can be: (G=224.1.1.1, V=2)-> user 1.This list item represents that VLAN is 2 if having multicast address is 224.1.1.1, and source IP address is the video flowing of 61.2.2.2, this video flowing is sent to user 1.
Fig. 6 is that the structure of the embodiment tri-of the multicast three-layer equipment that can be used for implementing embodiment of the method for the present invention of the present invention forms schematic diagram.As shown in Figure 6, multicast three-layer equipment 6 of the present invention can comprise configuration module 60, receiver module 61, search module 62 and sending module 63, wherein:
Sending module 63, the forwarding-table item finding out for searching module 62 described in basis, is transmitted to described multicast two-layer equipment by described video stream data.
The difference of the present embodiment and embodiment mono-is, the data of receiver module 61 receptions and three layers of mode that multicasts to the forwarding-table item of Layer 2 Multicast of configuration module 60 configurations are remarked additionally.In addition, the present embodiment search module 62 and sending module 63 respectively with in embodiment mono-to search module 62 identical with sending module 63.
In some feasible execution modes, to be described multicast three-layer equipment send to described multicast three-layer equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for Virtual Private Network sign, multicast group address and video source address.
As from the foregoing, on basis of the present invention, when multicast two-layer equipment receives after the video stream data that multicast three-layer equipment forwards, the forwarding-table item that can flow to user according to the video of multicast two-layer equipment static state or dynamic-configuration by the pushing video streaming obtaining to corresponding user.The forwarding-table item of associative list 1, the forwarding-table item that the video on multicast two-layer equipment flows to user can be: (G=224.1.1.1, V=2)-> user 1.This list item represents that VLAN is 2 if having multicast address is 224.1.1.1, and source IP address is the video flowing of 61.2.2.2, this video flowing is sent to user 1.
In specific implementation, as shown in Figure 7, the present invention also provides a kind of network equipment 7, can comprise: receiving system 71, dispensing device 72 and processor 73 are (in specific implementation, the processor 73 of the network equipment 7 can be a plurality of, in Fig. 7, only take one describe as example);
In feasible embodiment more of the present invention, receiving system 71, dispensing device 72 and processor 73 can be connected by bus or other modes, in Fig. 7, with bus, are connected to example.
In feasible embodiment more of the present invention: processor 73 can be carried out following steps:
When described receiving system gets video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure according to the multicast group address of described video stream data and video source address search;
According to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, notifying described dispensing device is that described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
In some feasible execution modes, described processor 73 is also carried out following steps:
Configure described three layers of forwarding-table item that multicasts to Layer 2 Multicast, described forwarding-table item comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address and video source address, and described Layer 2 Multicast list item comprises multicast group address and Layer 2 virtual private network sign.
In some feasible execution modes, three layers of forwarding-table item that multicasts to Layer 2 Multicast of processor 73 configurations comprise:
Described processor is at three layers of forwarding-table item that multicasts to Layer 2 Multicast described in the moving static configuration of described multicast three-layer equipment left-hand seat.
In some feasible execution modes, described processor, after three layers of the moving static configuration of described multicast three-layer equipment left-hand seat multicast to the forwarding-table item of Layer 2 Multicast, is also carried out following steps:
Notify described dispensing device that described three layers of forwarding-table item that multicasts to Layer 2 Multicast of configuration are sent to multicast two-layer equipment, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
In some feasible execution modes, three layers of forwarding-table item that multicasts to Layer 2 Multicast of described processor configuration comprise:
Described processor receives Virtual Private Network sign, multicast group address and video source address according to described receiving system from multicast two-layer equipment, automatically generates described three layers of forwarding-table item that multicasts to Layer 2 Multicast.
In some feasible execution modes, to be described receiving system send to the described network equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for Virtual Private Network, multicast group address and video source address.
The present invention also can provide a kind of multi-cast system, can comprise the multicast three-layer equipment of aforementioned each embodiment of the present invention and for the video stream data that described multicast three-layer equipment is turned, be transmitted to corresponding user's multicast two-layer equipment.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in various embodiments of the present invention method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Cited is only preferred embodiment of the present invention above, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (14)
1. three layers of multicast is converted to a method for Layer 2 Multicast, it is characterized in that, comprising:
When getting video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that multicast three-layer equipment configures according to the multicast group address of described video stream data and video source address search;
Described multicast three-layer equipment is according to the described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
2. three layers of multicast as claimed in claim 1 are converted to the method for Layer 2 Multicast, it is characterized in that, described in get video stream data before, comprising:
Described multicast three-layer equipment configures described three layers of forwarding-table item that multicasts to Layer 2 Multicast, described forwarding-table item comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address and video source address, and described Layer 2 Multicast list item comprises multicast group address and Layer 2 virtual private network sign.
3. three layers of multicast as claimed in claim 2 are converted to the method for Layer 2 Multicast, it is characterized in that, three layers of forwarding-table item that multicasts to Layer 2 Multicast of described multicast three-layer equipment configuration comprise:
At three layers of forwarding-table item that multicasts to Layer 2 Multicast described in the moving static configuration of described multicast three-layer equipment left-hand seat.
4. three layers of multicast as claimed in claim 3 are converted to the method for Layer 2 Multicast, it is characterized in that, after the forwarding-table item that described in the moving static configuration of described multicast three-layer equipment left-hand seat, three layers multicast to Layer 2 Multicast, comprising:
Described multicast three-layer equipment sends to multicast two-layer equipment by described three layers of forwarding-table item that multicasts to Layer 2 Multicast of configuration, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
5. three layers of multicast as claimed in claim 2 are converted to the method for Layer 2 Multicast, it is characterized in that, described multicast three-layer equipment configures described three layers of forwarding-table item that multicasts to Layer 2 Multicast and comprises:
Described multicast three-layer equipment receives Virtual Private Network sign, multicast group address and video source address from multicast two-layer equipment, and according to the described Virtual Private Network sign, multicast group address and the video source address that receive, automatically generate described three layers of forwarding-table item that multicasts to Layer 2 Multicast.
6. three layers of multicast as claimed in claim 5 are converted to the method for Layer 2 Multicast, it is characterized in that, to be described multicast three-layer equipment send to described multicast three-layer equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for described Virtual Private Network sign, multicast group address and video source address.
7. three layers of multicast as claimed in claim 1 are converted to the method for Layer 2 Multicast, it is characterized in that,
Described multicast three-layer equipment comprises router;
Described multicast two-layer equipment comprises two layers of access device.
8. a multicast three-layer equipment, is characterized in that, comprising:
Receiver module, for obtaining video stream data;
Search module, for when described receiver module receives video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure according to the multicast group address of described video stream data and video source address search;
Sending module, described in basis, search described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that module searches goes out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to described multicast two-layer equipment.
9. multicast three-layer equipment as claimed in claim 8, is characterized in that, also comprises:
Configuration module, for configuring described three layers of forwarding-table item that multicasts to Layer 2 Multicast, described forwarding-table item comprises the mapping relations between three layers of multicast list and Layer 2 Multicast list item, described three layers of multicast list comprise multicast group address and video source address, and described Layer 2 Multicast list item comprises multicast group address and Layer 2 virtual private network sign.
10. multicast three-layer equipment as claimed in claim 9, is characterized in that, described configuration module is specifically at three layers of forwarding-table item that multicasts to Layer 2 Multicast described in the moving static configuration of described multicast three-layer equipment left-hand seat.
11. multicast three-layer equipments as claimed in claim 10, it is characterized in that, described sending module is also for sending to multicast two-layer equipment by three layers of forwarding-table item that multicasts to Layer 2 Multicast of this multicast three-layer equipment configuration, so that described multicast two-layer equipment flows to user's forwarding-table item according to the described three layers automatic generating video of forwarding-table item that multicasts to Layer 2 Multicast, the forwarding-table item that described video flows to user comprises that multicast group address and Virtual Private Network are identified to the mapping relations of user ID.
12. multicast three-layer equipments as claimed in claim 9, is characterized in that, described receiver module is also for receiving Virtual Private Network sign, multicast group address and video source address from multicast two-layer equipment;
Described configuration module generates described three layers of forwarding-table item that multicasts to Layer 2 Multicast automatically specifically for described Virtual Private Network sign, multicast group address and the video source address receiving according to described receiver module.
13. multicast three-layer equipments as claimed in claim 12, it is characterized in that, to be described multicast three-layer equipment send to described multicast three-layer equipment after multicast two-layer equipment receives the Internet Group Management Protocol request message that user sends for Virtual Private Network sign, multicast group address and video source address.
14. 1 kinds of multi-cast systems, is characterized in that, comprising:
Multicast three-layer equipment, be used for obtaining video stream data, and when receiving video stream data, three layers of forwarding-table item that multicasts to Layer 2 Multicast that configure according to the multicast group address of described video stream data and video source address search, and according to the described described three layers of forwarding-table item forwarding-table item that multicasts to Layer 2 Multicast that find out, for described video stream data adds Layer 2 Multicast list item, and the video stream data that has added Layer 2 Multicast list item is transmitted to multicast two-layer equipment;
Multicast two-layer equipment, is transmitted to corresponding user for the video stream data that described multicast three-layer equipment is turned.
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| CN201210351561.7A CN103686440A (en) | 2012-09-20 | 2012-09-20 | Method converting three layer multicast into two layer multicast and related devices |
| PCT/CN2013/083885 WO2014044206A1 (en) | 2012-09-20 | 2013-09-22 | Method and related device for converting layer-3 multicast into layer-2 multicast |
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| CN106487702A (en) * | 2015-08-31 | 2017-03-08 | 深圳市中兴微电子技术有限公司 | A kind of multicast message two-stage clone method and device |
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