CN102263703B - Method, device and network system for transparently transmitting and multicasting protocol messages - Google Patents
Method, device and network system for transparently transmitting and multicasting protocol messages Download PDFInfo
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- CN102263703B CN102263703B CN201110250353.3A CN201110250353A CN102263703B CN 102263703 B CN102263703 B CN 102263703B CN 201110250353 A CN201110250353 A CN 201110250353A CN 102263703 B CN102263703 B CN 102263703B
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Abstract
The embodiment of the invention relates to the field of communication, and discloses a method, device and network system for transparently transmitting and multicasting protocol messages. The method for transparently transmitting and multicasting protocol messages comprises the steps: an exchanger provided with a multicasting VLAN (virtual local area network) receives a multicast report message of the first user side VLAN, wherein the multicast report message carries a VLAN identifier of the first user side VLAN; and the exchanger provided with the multicasting VLAN transparently transmits the multicast report message to a broadband access server provided with a polymerization VLAN. In an embodiment of the invention, the broadband access server can distinguish VLANs at different user sides in a condition that the exchanger between the broadband access server and the user side VLAN is provided with the multicasting VLAN so that the flow rate of the user side VLAN can be managed when the work of multicast replication is shifted to other equipments from the broadband access server, thus the multicast flow replication work with practical significance can be shifted, and the requirement on bandwidth of a link circuit connected between the broadband access server and the user side network is reduced.
Description
Technical field
The present invention relates to the communications field, particularly a kind ofly by transparent transmission multicast protocol message technology, solve method, device and the network system that user's aggregation scheme is landed.
Background technology
For convenience of reader understanding's technical background of the present invention, now introduce some technical terms.
1, multicast user's polymerization (user-aggregation):
For the user of the program request same program of reaching the standard grade from same port and VLAN, in order to save bandwidth, device just will copy a flux of multicast to downstream switch, by downstream switch, by the M-VLAN function, flow is being copied to each user.
2, multicast copies (Multicast copy by-session) by the user:
Two-layer equipment when BAS Broadband Access Server (BRAS) downstream does not possess IGMP Snooping function, during None-identified multicast group user, on the interface of BRAS, configuration is carried out multicast replication by user conversation, directly multicast message is copied in each user's session by BRAS, send to the user.
3, M-VLAN:
If the user in a plurality of different VLAN need to receive identical multicast data flow, can realize by the configuration replication of a multicast VLAN.By realizing replication of a multicast VLAN, can manage and control multicast source and multicast member, also can reduce bandwidth waste simultaneously.
In the prior art, BAS Broadband Access Server carries out respectively copying of flux of multicast for the user of each request multicast traffic stream.Although this scheme can realize multicast, because a large amount of multicast messages that are replicated need to be sent to user's side from BAS Broadband Access Server, the bandwidth requirement of the link therefore BAS Broadband Access Server is connected with Customer Premises Network is very high.
Summary of the invention
One embodiment of the present of invention mainly solve the network resource transmission bottleneck problem that user's aggregation scheme is landed, and save bandwidth, make user's aggregation scene can really be landed enforcements, the Optimizing Network Resources deployment.
Given this, be necessary to provide a kind of method, device and network system of transparent transmission multicast protocol message.
On the one hand, a kind of method of transparent transmission multicast protocol message comprises:
The switch that disposes multicast virtual local area network VLAN receives the multicast report message of first user side virtual LAN VLAN, described multicast report message is carried the VLAN sign of described first user side VLAN, wherein, described M-VLAN and a plurality of user's side VLAN bindings that comprise described first user side VLAN;
The described switch that disposes multicast virtual local area network VLAN is transparent to by described multicast report message the BAS Broadband Access Server that disposes polymerization VLAN, so that described BAS Broadband Access Server is according to the described VLAN sign by transparent transmission, the flow to described first user side VLAN manages, wherein, described polymerization VLAN is formed by the described a plurality of user's side VLAN aggregations that comprise described first user side VLAN.
On the one hand, a kind of device of transparent transmission multicast protocol message comprises:
Install the first receiver module, for receiving the multicast report message of first user side virtual LAN VLAN, described multicast report message is carried the VLAN sign of described first user side VLAN, wherein, described message receiver module disposes M-VLAN, described M-VLAN and a plurality of user's side VLAN bindings that comprise described first user side VLAN;
Install the first transparent transmission module, for described multicast report message is transparent to the BAS Broadband Access Server that disposes polymerization VLAN, so that described BAS Broadband Access Server is according to the described VLAN sign by transparent transmission, the flow to described first user side VLAN manages, wherein, described polymerization VLAN is formed by the described a plurality of user's side VLAN aggregations that comprise described first user side VLAN.
On the one hand, a kind of network system, comprise above-mentioned device, and described system also comprises BAS Broadband Access Server and multicast replication point, and described BAS Broadband Access Server comprises:
Server the first receiver module, for receiving the multicast report message of described first user side VLAN;
Server the first sending module, be sent to described multicast replication point for the first data flow of the multicast report message request by described first user side VLAN.
One embodiment of the present of invention can make BAS Broadband Access Server in the situation that from user's side VLAN between switch on dispose M-VLAN and still can distinguish different user's side VLAN, in order to can carry out traffic management to user's side VLAN after multicast replication work is displaced downwardly to other equipment by BAS Broadband Access Server, thereby can realize that the flux of multicast replication work with practical significance moves down, reduce the bandwidth requirement of the link that BAS Broadband Access Server is connected with Customer Premises Network.
The accompanying drawing explanation
Fig. 1 is the method flow diagram of the transparent transmission multicast protocol message that provides of the embodiment of the present invention.
Fig. 2 is the schematic diagram that the method for the transparent transmission multicast protocol message that provides of the embodiment of the present invention is used on network.
Fig. 3 is the device block diagram of the transparent transmission multicast protocol message that provides of the embodiment of the present invention.
Fig. 4 is the network system block diagram that the embodiment of the present invention provides.
Specific embodiment
As shown in Figure 1, the embodiment of the present invention one provides a kind of method of transparent transmission multicast protocol message, comprises following content.
The present embodiment can make BAS Broadband Access Server in the situation that from user's side VLAN between switch on dispose M-VLAN and still can distinguish different user's side VLAN, in order to can carry out traffic management to user's side VLAN after multicast replication work is displaced downwardly to other equipment by BAS Broadband Access Server, thereby can realize that the flux of multicast replication work with practical significance moves down, reduce the bandwidth requirement of the link that BAS Broadband Access Server is connected with Customer Premises Network.
Described transparent transmission comprises: describedly dispose the switch of M-VLAN in the situation that do not change the VLAN sign ID of the multicast report message of described first user side VLAN, the described multicast report message of described first user side VLAN is sent to the described BAS Broadband Access Server that disposes polymerization VLAN.
M-VLAN is consistent with the VLAN-ID of the upper configuration of user's polymerization VLAN, and the VLAN-ID of user vlan configuration is different from the VLAN-ID of M-VLAN, such as M-VLAN, transmitting with the vlan information of transmitting upper configuration of user's polymerization VLAN is one-level operator title, and the vlan information of transmitting configuration of user vlan is secondary operator title.
That the query message sent from the switch that disposes M-VLAN be connected with BAS Broadband Access Server is carried is the VLAN sign ID of user's polymerization VLAN, and its purpose MAC is the MAC of multicast; That the data message forwarded from described BAS Broadband Access Server carries is the VLAN sign ID of user's polymerization VLAN, and its purpose MAC is the MAC of multicast.
As a kind of improved procedure, described method also comprises:
Described BAS Broadband Access Server receives the multicast report message of described first user side VLAN; Described BAS Broadband Access Server is sent to the multicast replication point by the first data flow of the multicast report message request of described first user side VLAN.
Described multicast replication point is copied described the first data flow; The VLAN sign of the first user side VLAN that described multicast replication point listens to according to the described switch that disposes multicast virtual local area network VLAN, to be sent to described first user side VLAN through copying the second data flow obtained, described the second data flow is identical with the data division of described the first data flow.
Preferably, described multicast replication point and the described switch that disposes M-VLAN can be same equipment, can be also different equipment.
As further improved procedure, described method also comprises:
The described switch that disposes multicast virtual local area network VLAN receives the multicast report message of second user's side VLAN, and the data flow of described second user's side VLAN multicast report message request is identical with the data flow of described first user side VLAN multicast report message request; The described switch that disposes M-VLAN is pass-through to described BAS Broadband Access Server by the multicast report message of described second user's side VLAN.
The VLAN sign of second user's side VLAN that described multicast replication point listens to according to the described switch that disposes multicast virtual local area network VLAN, will through copy to the 3rd data flow be sent to described second user's side VLAN, described the 3rd data flow is identical with the data division of described the first data flow.
Certainly also the multicast virtual dispatch command can be set on described BAS Broadband Access Server, for the unicast bandwidth of dynamically adjusting the user, ensure multicast bandwidth.Concrete, described BAS Broadband Access Server determines that the bandwidth of described the first data flow surpasses a preset value of described first user side VLAN configuration; Described BAS Broadband Access Server reduces the bandwidth of the one or more data flow in the data flow except described the second data flow in described first user side VLAN.Such as monitoring flux of multicast, after flux of multicast reaches a default threshold values 60%, just automatically adjust the bandwidth of clean culture, the reasonable distribution bandwidth, emphasis meets muticast data transmission.
The described switch that disposes M-VLAN can transparent transmission from the multicast report message of first user side virtual LAN VLAN to described BAS Broadband Access Server, equally, also can transparent transmission from the multicast leave message of first user side virtual LAN VLAN to described BAS Broadband Access Server, specifically comprise the following steps:
The described switch that disposes M-VLAN receives the multicast leave message of first user side virtual LAN VLAN, and wherein, described multicast leave message is carried the VLAN sign of described first user side VLAN; The described switch that disposes M-VLAN is transparent to described BAS Broadband Access Server by described multicast leave message.
Described BAS Broadband Access Server receives described multicast leave message; Described BAS Broadband Access Server determines that according to the VLAN sign of described first user side VLAN described first user side VLAN request stops receiving described the first data flow; Described BAS Broadband Access Server is determined: the whole user's side VLAN that receive described the first data flow all ask to stop receiving described the first data flow; Now, described broadband server stops sending described the first data flow to described copy-point.That is to say, BAS Broadband Access Server checks whether each VLAN that asks described the first data flow has sent respectively the multicast leave message, if so, determine that the whole user's side VLAN that receive described the first data flow all ask to stop receiving described the first data flow.
Pass described multicast report message or the multicast leave message of coming from user side VALN like this, still carry the VLAN-ID of user side VLAN after the interface of the M-VLAN of the described switch that disposes M-VLAN forwards, the interface of the M-VLAN be connected with up BAS Broadband Access Server allows the message of user vlan to pass through.
When the replication work of flux of multicast by from described broadband access equipment is displaced downwardly to described multicast replication point, can there do not is the multicast traffic stream that a large amount of contents are identical on BAS Broadband Access Server with on the connected link of user's side, greatly reduce the requirement to bandwidth, and also reduced the requirement to the replication capacity of BAS Broadband Access Server.
On system as shown in Figure 2, illustrate the implementation procedure of the inventive method, take IPv4 as example:
Configuration M-VLAN function on the convergence switch be connected with BAS Broadband Access Server (BRAS):
According to top configuration, the VLAN1 to 10 that can carry the user in the multicast report message of coming from switch GE1/0/1～GE1/0/10 or multicast leave message like this carries through switch GE2/0/1 the GigabitEthernet3/0/1.1 interface that user vlan is transparent to BRAS equipment
The embodiment of the present invention provides a kind of device of transparent transmission multicast protocol message, and as shown in Figure 3, the device of described transparent transmission multicast protocol message comprises:
Install the first receiver module 20, for receiving the multicast report message of first user side virtual LAN VLAN, described multicast report message is carried the VLAN sign of described first user side VLAN, wherein, described message receiver module disposes M-VLAN, described M-VLAN and a plurality of user's side VLAN bindings that comprise described first user side VLAN;
Install the first transparent transmission module 21, for described multicast report message is transparent to the BAS Broadband Access Server that disposes polymerization VLAN, so that described BAS Broadband Access Server is according to the described VLAN sign by transparent transmission, the flow to described first user side VLAN manages, wherein, described polymerization VLAN is formed by the described a plurality of user's side VLAN aggregations that comprise described first user side VLAN.
In the present embodiment, the device of described transparent transmission multicast protocol message can enter switch or user's side convergence switch for user's side joint, can be also other switches or the similar network equipment.
The present embodiment can make BAS Broadband Access Server in the situation that from user's side VLAN between switch on dispose M-VLAN and still can distinguish different user's side VLAN, in order to can carry out traffic management to user's side VLAN after multicast replication work is displaced downwardly to other equipment by BAS Broadband Access Server, thereby can realize that the flux of multicast replication work with practical significance moves down, reduce the bandwidth requirement of the link that BAS Broadband Access Server is connected with Customer Premises Network.
Preferably, described device the first transparent transmission module 21 comprises:
Transparent transmission is implemented unit 210, in the situation that do not change the VLAN sign of the multicast report message of described first user side VLAN, the described multicast report message of described first user side VLAN is sent to the described BAS Broadband Access Server that disposes polymerization VLAN.
As shown in Figure 4, the embodiment of the present invention also provides a kind of network system, comprises the device of above-mentioned transparent transmission multicast protocol message, and the device of described transparent transmission multicast protocol message comprises described device the first receiver module 20 and described device the first transparent transmission module 21.Preferably, described device the first transparent transmission module 21 comprises described transparent transmission enforcement unit 210.The Reference numeral of device in Fig. 4 of described transparent transmission multicast protocol message is 33.Described network system can also comprise one or more subscriber equipmenies, such as, can comprise first user equipment 310, first user equipment 311, first user equipment 312, also comprise multicast replication point 32 and BAS Broadband Access Server 34.
Described BAS Broadband Access Server 34 comprises: server the first receiver module 341, for receiving the multicast report message of described first user side VLAN; Server the first sending module 342, be sent to the multicast replication point for the first data flow of the multicast report message request by described first user side VLAN.
Described multicast replication point 32 comprises: the first replication module 321, for described the first data flow is copied; The first sending module 322, VLAN sign for the first user side VLAN that listens to according to the described switch that disposes M-VLAN, to be sent to described first user side VLAN through copying the second data flow obtained, described the second data flow is identical with the data division of described the first data flow.
Preferably, the device 33 of described transparent transmission multicast protocol message also comprises: install the second receiver module 332, for receiving the multicast report message of second user's side VLAN, the data flow of described second user's side VLAN multicast report message request is identical with the data flow of described first user side VLAN multicast report message request; Install the second transparent transmission module 333, for the multicast report message by described second user's side VLAN, be pass-through to described server.
Preferably, described multicast replication point 32 also comprises: the second sending module 323, VLAN sign for second user's side VLAN of listening to according to described device, will through copy to the 3rd data flow be sent to described second user's side VLAN, described the 3rd data flow is identical with the data division of described the first data flow.
Preferably, described server 34 also comprises: server the first determination module 343 surpasses the preset value for described first user side VLAN configuration for the bandwidth of determining described the first data flow; Server the first adjusting module 344, for reducing the bandwidth of the one or more data flow in the data flow except described the second data flow in described first user side VLAN.
Preferably, the device 33 of described transparent transmission multicast protocol message also comprises: install the 3rd receiver module 334, for receiving the multicast leave message of first user side virtual LAN VLAN, wherein, described multicast leave message is carried the VLAN sign of described first user side VLAN; Install the 3rd transparent transmission module 335, described multicast leave message is transparent to described server.
Preferably, described server 34 also comprises: server the second receiver module 345, for receiving described multicast leave message; Server second is confirmed module 346, for the sign of the VLAN according to described first user side VLAN, determines that described first user side VLAN request stops receiving described the first data flow; Server the 3rd is confirmed module 347, for the whole user's side VLAN that determine described the first data flow of request receiving, all asks to stop receiving described the first data flow; Server the second adjusting module 348, send described the first data flow for stopping to described multicast replication point.
Preferably, in described network system, the device of described transparent transmission multicast protocol message and described multicast replication point can be same device, also can be different devices.When the device of described transparent transmission multicast protocol message and described multicast replication point, during for same device, the device of described transparent transmission multicast protocol message comprises the whole modules in described copy-point.
Preferably, device and a plurality of modules in described network system at described transparent transmission multicast protocol message can be all hardware module; Can be also all software module; Can also some module be hardware module, a part of module be software module.
When the replication work of flux of multicast by from described broadband access equipment is displaced downwardly to described multicast replication point, can there do not is the multicast traffic stream that a large amount of contents are identical on BAS Broadband Access Server with on the connected link of user's side, greatly reduce the requirement to bandwidth, and also reduced the requirement to the replication capacity of BAS Broadband Access Server.
It should be noted that, those skilled in the art can carry out various changes and modification and not break away 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 also is intended to comprise these changes and modification interior.
Claims (12)
1. the method for a transparent transmission multicast protocol message, is characterized in that, described method comprises:
The switch that disposes multicast virtual local area network VLAN receives the multicast report message of first user side virtual LAN VLAN, described multicast report message is carried the VLAN sign of described first user side VLAN, wherein, described M-VLAN and a plurality of user's side VLAN bindings that comprise described first user side VLAN;
The described switch that disposes multicast virtual local area network VLAN is transparent to by described multicast report message the BAS Broadband Access Server that disposes polymerization VLAN, so that described BAS Broadband Access Server is according to the described VLAN sign by transparent transmission, the flow to described first user side VLAN manages, wherein, described polymerization VLAN is formed by the described a plurality of user's side VLAN aggregations that comprise described first user side VLAN;
Described BAS Broadband Access Server receives the multicast report message of described first user side VLAN;
Described BAS Broadband Access Server is sent to the multicast replication point by the first data flow of the multicast report message request of described first user side VLAN;
Described multicast replication point is copied described the first data flow;
The VLAN sign of the first user side VLAN that described multicast replication point listens to according to the described switch that disposes multicast virtual local area network VLAN, to be sent to described first user side VLAN through copying the second data flow obtained, described the second data flow is identical with the data division of described the first data flow;
Described BAS Broadband Access Server determines that the bandwidth of described the first data flow surpasses the preset value for described first user side VLAN configuration;
Described BAS Broadband Access Server reduces the bandwidth of the one or more data flow in the data flow except described the second data flow in described first user side VLAN.
2. the method for claim 1, is characterized in that, the described switch that disposes M-VLAN is transparent to by described multicast report message the BAS Broadband Access Server that disposes polymerization VLAN and comprises:
Describedly dispose the switch of multicast virtual local area network VLAN in the situation that do not change the VLAN sign of the multicast report message of described first user side VLAN, the described multicast report message of described first user side VLAN is sent to the described BAS Broadband Access Server that disposes polymerization VLAN.
3. the method for claim 1, is characterized in that, described method also comprises:
The described switch that disposes multicast virtual local area network VLAN receives the multicast report message of second user's side VLAN, and the data flow of described second user's side VLAN multicast report message request is identical with the data flow of described first user side VLAN multicast report message request;
The described switch that disposes M-VLAN is pass-through to described BAS Broadband Access Server by the multicast report message of described second user's side VLAN.
4. method as claimed in claim 3, is characterized in that, described method also comprises:
The VLAN sign of second user's side VLAN that described multicast replication point listens to according to the described switch that disposes multicast virtual local area network VLAN, to be sent to described second user's side VLAN through copying the 3rd data flow obtained, described the 3rd data flow is identical with the data division of described the first data flow.
5. the method for claim 1, is characterized in that, described method also comprises:
The described switch that disposes multicast virtual local area network VLAN receives the multicast leave message of first user side virtual LAN VLAN, and wherein, described multicast leave message is carried the VLAN sign of described first user side VLAN;
Described switch is transparent to described BAS Broadband Access Server by described multicast leave message.
6. method as claimed in claim 5, is characterized in that, described method also comprises:
Described BAS Broadband Access Server receives described multicast leave message;
Described BAS Broadband Access Server determines that according to the VLAN sign of described first user side VLAN described first user side VLAN request stops receiving described the first data flow;
Described BAS Broadband Access Server determines that whole user's side VLAN of described the first data flow of request receiving all ask to stop receiving described the first data flow;
Described broadband server stops sending described the first data flow to described copy-point.
7. a network system, is characterized in that, comprises the device of transparent transmission multicast protocol message, and a plurality of subscriber equipment, also comprises BAS Broadband Access Server and multicast replication point, wherein:
The device of described transparent transmission multicast protocol message comprises:
Install the first receiver module; for receiving the multicast report message of first user side virtual LAN VLAN; described multicast report message is carried the VLAN sign of described first user side VLAN; wherein; described message receiver module disposes M-VLAN, described M-VLAN and a plurality of user's side VLAN bindings that comprise described first user side VLAN;
Install the first transparent transmission module, for described multicast report message is transparent to the BAS Broadband Access Server that disposes polymerization VLAN, so that described BAS Broadband Access Server is according to the described VLAN sign by transparent transmission, the flow to described first user side VLAN manages, wherein, described polymerization VLAN is formed by the described a plurality of user's side VLAN aggregations that comprise described first user side VLAN;
Described BAS Broadband Access Server comprises:
Server the first receiver module, for receiving the multicast report message of described first user side VLAN;
Server the first sending module, be sent to described multicast replication point for the first data flow of the multicast report message request by described first user side VLAN;
Described multicast replication point comprises:
The first replication module, for being copied described the first data flow;
The first sending module, VLAN sign for the first user side VLAN that listens to according to the described switch that disposes multicast virtual local area network VLAN, to be sent to described first user side VLAN through copying the second data flow obtained, described the second data flow is identical with the data division of described the first data flow;
Described BAS Broadband Access Server also comprises:
Server the first determination module, surpass the preset value for described first user side VLAN configuration for the bandwidth of determining described the first data flow;
Server the first adjusting module, for reducing the bandwidth of the one or more data flow in the data flow except described the second data flow in described first user side VLAN.
8. network system as claimed in claim 7, is characterized in that, described device the first transparent transmission module comprises:
Transparent transmission is implemented unit, in the situation that do not change the VLAN sign of the multicast report message of described first user side VLAN, the described multicast report message of described first user side VLAN is sent to the described BAS Broadband Access Server that disposes polymerization VLAN.
9. system as claimed in claim 7, is characterized in that, the device of described transparent transmission multicast protocol message also comprises:
Install the second receiver module, for receiving the multicast report message of second user's side VLAN, the data flow of described second user's side VLAN multicast report message request is identical with the data flow of described first user side VLAN multicast report message request;
Install the second transparent transmission module, for the multicast report message by described second user's side VLAN, be pass-through to described server.
10. system as claimed in claim 9, is characterized in that, described multicast replication point also comprises:
The second sending module, the VLAN sign for second user's side VLAN of listening to according to described device, will be sent to described second user's side VLAN through copying the 3rd data flow obtained, and described the 3rd data flow is identical with the data division of described the first data flow.
11. system as claimed in claim 9, is characterized in that, the device of described transparent transmission multicast protocol message also comprises:
Install the 3rd receiver module, for receiving the multicast leave message of first user side virtual LAN VLAN, wherein, described multicast leave message is carried the VLAN sign of described first user side VLAN;
Install the 3rd transparent transmission module, described multicast leave message is transparent to described server.
12. system as claimed in claim 7, is characterized in that, described BAS Broadband Access Server also comprises:
Server the second receiver module, for receiving described multicast leave message;
Server second is confirmed module, for the sign of the VLAN according to described first user side VLAN, determines that described first user side VLAN request stops receiving described the first data flow;
Server the 3rd is confirmed module, for the whole user's side VLAN that determine described the first data flow of request receiving, all asks to stop receiving described the first data flow;
Server the second adjusting module, send described the first data flow for stopping to described multicast replication point.
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