CN101771551A - Method for streaming media distribution in virtual special multicasting service, device and system thereof - Google Patents
Method for streaming media distribution in virtual special multicasting service, device and system thereof Download PDFInfo
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Abstract
The embodiment of the invention discloses a method for streaming media distribution in virtual special multicasting service, a device and a system thereof, which belong to communication field. The method comprises: receiving VPMS information flooded or distributed in network by a service provider edge device PE, wherein, the VPMS information comprises a load balancing strategy; determining VPMS source according to VPMS information; establishing VPMS topology based on the determined VPMS source; distributing streaming media service data message according to the VPMS topology. The device comprises: a receiving module for determining module and establishing module. The system comprises: a first PE device and a second PE device. The scheme provided by the embodiment of the invention realizes great reduction of maintenance cost, service-lossless load protection switching, and the improvement of end-user experience.
Description
Technical field
The present invention relates to the communications field, method, the Apparatus and system of Streaming Media distribution in particularly a kind of virtual special multicasting service.
Background technology
L2VPN (Virtual Private Networks, Layer 2 virtual private network working group) technology is in order to make full use of IP (Internet Protocol, Internet protocol)/MPLS (Multiprotocol Label Switch, multiprotocol label switching) Internet resources support data service to release, provide the transmission passage with the IP/MPLS network for Layer 2 data link bag, so that realize the fusion of IP network and data network.At present, service provider's L2VPN form of service that can offer the user has VPWS (VirtualPrivate Wire Service, VLL business) and VPLS (Virtual Private LAN Service, virtual LAN services).Wherein, VPWS provides two layers bi-directional point to multipoint business; VPLS is provided at two layer services of emulation ethernet local area network on the wide area network, and it is two-way multiple spot to multiple spot.
But under some scenes, can use two layer services that a little arrive multiple spot P2MP (point-to-multipoint puts multiple spot) type, VPMS (Virtual Private Multicast Service, virtual special multicasting service) therefore occur.VPMS is that a kind of unidirectional point that provides on the packet service network of IP or MPLS arrives the internuncial two-layer VPN business of multiple spot, be mainly used to the transport multicast flow, such as IPTV (Internet Protocol Television, Web TV) BTV business (BroadcastingTelevision, live broadcast service).
The VPMS reference model is just accepted by IETF L2VPN working group, and pilosity choosing is wherein received and is derived from traditional speech business bearer network, and traditional speech business guarantees to protect switching time in 50ms.Switch in the time-continuing process in protection, the message in this 50ms can be lost, but this can receive for speech business, and the human sense of hearing can not be experienced the interruption of 50ms usually.Human oxyopia many, human timing separation is at interval at 1/24 second, about 42 seconds.
By prior art is analyzed, the inventor finds: the VPMS multi-source redundancy scheme that choosing is received based on pilosity has three significant disadvantages:
(1) expense is big, and under the same VPMS example, different source end synchronized transmissions is given identical receiving terminal set by two parts of identical content delivery in bearer network, big to the pressure of bearer network, can not realize load balancing according to network design or region;
(2) weak effect only can guarantee under the so big expense that the protection of 50ms is switched, and the continuous packet loss of 50ms can cause terminal serious quality decline phenomenons such as picture stagnation, mosaic, Hua Ping to occur, thereby influences end-user experience;
(3) configuration is complicated, and is similar with traditional transmission network, and the strategy that PE equipment needs the multiple choosing of manual configuration to receive is in case strategy change just need reconfigure the strategy on all PE (Provide Edge, provider edge) equipment.
Summary of the invention
For the maintenance costs, the reduction Streaming Media distribution service that reduce VPMS, the embodiment of the invention provides method, the Apparatus and system of Streaming Media distribution in a kind of virtual special multicasting service.Described technical scheme is as follows:
The method of Streaming Media distribution in a kind of virtual special multicasting service, described method comprises:
Receive the VPMS information that provider edge equipment PE floods in network or issues, described VPMS information comprises the load balancing strategy;
Determine the VPMS source according to described VPMS information;
With definite VPMS source is root node, sets up the VPMS topology;
According to described VPMS topology, distribution flow media business data message.
The method of Streaming Media distribution in a kind of virtual special multicasting service, described method comprises:
The business datum message of switching point equipment cache flow distribution of media;
When network broke down, described switching point equipment received the protection handoff request that the network equipment sends, and according to described protection handoff request, described cached business data message is sent to the described network equipment.
The device of Streaming Media distribution in a kind of virtual special multicasting service, described device comprises: receiver module, determination module is set up module and distribution module;
Receiver module is used for receiving the VPMS information that PE equipment floods or issues at network;
Determination module is used for determining the VPMS source according to the VPMS information that described receiver module receives that described VPMS information comprises the load balancing strategy;
Set up module, the VPMS source that is used for determining with described determination module is a root node, sets up the VPMS topology;
Distribution module is used for according to the described VPMS topology that module is set up, the distribution flow media business data message set up.
The system of Streaming Media distribution in a kind of virtual special multicasting service, described system comprises: PE equipment and the 2nd PE equipment;
A described PE equipment is used for the VPMS information that floods or issue at network, and described VPMS information comprises the load balancing strategy, and described VPMS information is sent to described the 2nd PE equipment;
Described the 2nd PE equipment is used to receive the VPMS information that a described PE equipment floods or issues, and determines the VPMS source according to described VPMS information; And be root node with the VPMS source of determining, set up the VPMS topology, described VPMS topology is used for distribution flow media business data message.
The device of Streaming Media distribution in a kind of virtual special multicasting service, described device comprises: cache module, receiver module and processing module;
Described cache module is used for the business datum message of cache flow distribution of media;
Described receiver module is used for when network breaks down, and receives the protection handoff request that the network equipment sends;
Described processing module is used for the protection handoff request according to described receiver module reception, and described cached business data message is sent to the described network equipment.
The system of Streaming Media distribution in a kind of virtual special multicasting service, described system comprises: the switching point equipment and the network equipment;
Described switching point equipment is used for the business datum message of cache flow distribution of media; When network broke down, described switching point equipment received the protection handoff request that the described network equipment sends, and according to described protection handoff request, described data in buffer message is sent to the described network equipment;
The described network equipment is used for sending the protection handoff request to described switching point equipment, and receives the described business datum message that described switching point equipment sends.
The beneficial effect of the technical scheme that the embodiment of the invention provides is: by flooding in the territory or announcing VPMS information, after other PE equipment receive this VPMS information, according to this VPMS information, set up a VPMS topology automatically; And can carry out buffer memory to the business datum message message of VPMS Streaming Media distribution; When network broke down, the business datum message message that the Streaming Media of buffer memory is distributed sent to relevant device, thereby shortens the time that the VPMS bearer service interrupts, the influence that the fault that minimizing takes place is brought user experience.
Description of drawings
Fig. 1 is the method flow diagram of Streaming Media distribution in a kind of virtual special multicasting service of providing of the embodiment of the invention 1;
Fig. 2 is the VPMS message structure schematic diagram that the embodiment of the invention 1 provides;
Fig. 3 is the schematic diagram of Streaming Media distribution service data message in the virtual special multicasting service that provides of the embodiment of the invention 1;
Fig. 4 is the schematic diagram based on the business datum message of the Streaming Media distribution of the protection switching carrier of VPMS that the embodiment of the invention 1 provides;
Fig. 5 is the method flow diagram of Streaming Media distribution in a kind of virtual special multicasting service of providing of the embodiment of the invention 2;
Fig. 6 is the apparatus structure schematic diagram of Streaming Media distribution in a kind of virtual special multicasting service of providing of the embodiment of the invention 3;
Fig. 7 is the system configuration schematic diagram of Streaming Media distribution in a kind of virtual special multicasting service of providing of the embodiment of the invention 4;
Fig. 8 is the apparatus structure schematic diagram of Streaming Media distribution in a kind of virtual special multicasting service of providing of the embodiment of the invention 5;
Fig. 9 is the system configuration schematic diagram of Streaming Media distribution in a kind of virtual special multicasting service of providing of the embodiment of the invention 6.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the embodiment of the invention provides the method for the distribution of Streaming Media in a kind of virtual special multicasting service, the method for the business of IPTVBTV for example, and this method comprises:
101: receive the VPMS information that PE equipment floods or issues in network;
Wherein, referring to shown in Figure 2, VPMS information comprises:
VPMS sign: be used to identify a VPMS example;
PE sign: be used to identify the PE equipment that participates in making up above-mentioned appointment VPMS example;
The information in the autonomous territory of PE equipment ownership:
Related AC sign: the connection ID between PE and the CE can be vlan ID usually; Shown the ACID of sequence number from 1 to N among Fig. 2, promptly AC-1ID is to AC-n ID.
Related AC direction: when direction is descending, CE (Customer Edge, customer edge) is a receiving equipment; When direction is up, CE is a transmitting apparatus.
The load balancing Policy Info: comprises PE equipment is protected switching under which kind of situation, for example, PE equipment is finding directly to be connected disconnection with the VPMS source, perhaps when system maintenance is initiatively to switch, when these similar times took place, the load balancing strategy carried out the foundation of load balancing as PE equipment;
Also comprise according to the PE equipment mark related, select the source end of the PE equipment of the longest coupling, also can select the source end of suitable PE equipment according to the jumping figure distance of the PE equipment related with CE as the VPMS topology as the VPMS topology with CE;
Protection switching point information: comprise protection switching point sign, be used to identify switching point equipment, can also comprise protection switching point self characteristics information, such as data in buffer time span (as buffer memory only 2 seconds), aging rule etc.The protection switching point adds a plurality of VPMS topologys under the VPMS example simultaneously, and the protection switching point information comprises the address of this protection switching, the VPMS topology information that is added etc.
These VPMS information are not to be flooded or issued by all PE equipment, but are flooded or issued by specific PE equipment, and wherein, the PE equipment that is connected with the CE of the business datum message of receiving stream media server distribution is specific PE equipment; In the present embodiment, as shown in Figure 3, PE-1 and PE-6 equipment can be used as particular device and flood or issue VPMS message.
Wherein, VPMS information can be separated or be carried out independent transmission with various combinations, so that with the arbitrary format transmission, the Fig. 2 in the present embodiment is a kind of of implementation method.
Concrete dissemination method can be expansion BGP (Border Gateway Protocol, Border Gateway Protocol) Routing Protocol or expansion OSPF (Open Shortest Path First, Open Shortest Path First) Routing Protocol or expansion IS-IS (Intermediate system tointermediate system, the routing protocol of Intermediate System-to-Intermediate System) Routing Protocol carry VPMS information.Bgp protocol can be given the opposite end with the VPMS information announcement, and OSPF or IS-IS can flood VPMS information in the territory.Two kinds of methods can make that all PE equipment automatic receptions are finished automatic discovery and the configuration of VPMS to the load balancing strategy and the protection switching point information of VPMS example in the territory, greatly reduce the configuration effort amount.
102: determine the VPMS source according to the VPMS information of receiving;
Concrete, can determine the VPMS source according to equipment place management domain, IP address or from the jumping figure of source end according to the load balancing strategy in the VPMS information.
103: with definite VPMS source is root node, sets up the VPMS topology;
104: according to the VPMS topology of setting up, distribution flow media business data message.
Referring to Fig. 3, in the embodiment of the invention, the VPMS example comprises two VPMS topology: VPMS topologys 1 and VPMS topology 2, and they have identical receiving terminal set is CE-2, CE-3, CE-4 and CE-5; Different is, the business datum message of the Streaming Media distribution that VPMS topology 1 receives is from CE-1, and the business datum message of the Streaming Media distribution that VPMS topology 2 receives is from CE-6.PE-1 is linked into CE-1 in the network via AC-1 (connection ID between PE-1 and the CE-1), and PE-6 is linked into CE-6 in the network via AC-6.
PE-1 is as the root node of the VPMS topology 1 of VPMS example, in the territory, flood or issue VPMS information, peer device P (Provider, service provider's equipment)-1, P-2, P-3 and PE-2, equipment such as PE-3 receive the above-mentioned VPMS information of PE-1 equipment issue, peer device P-1, P-2, P-3, PE-2, PE-3 receives the above-mentioned VPMS information of PE-1 equipment issue, after the equipment of definite this VPMS information of issue is PE-1, peer device P-1, PE-2, it is the VPMS topology of root node that PE-3 adds with PE-1 equipment, and this VPMS topology is used for distribution flow media business data message.
For example, load balancing strategy regulation, the longest coupling as the PE equipment mark of root node is preferential, for example be 192.168.0.2, the root node PE of the another one VPMS topology under the same VPMS example is designated 192.168.10.3, and local PE equipment mark is 192.168.0.6, so just selects to join in the VPMS topology that root node PE is designated 192.168.0.2 according to the longest matching strategy and goes.
Identical, PE-6 is as the root node of the VPMS topology 2 of VPMS example, in the territory, flood or issue VPMS information, peer device P-1, P-2, P-3 and PE-4, equipment such as PE-5 receive the above-mentioned VPMS information of PE-6 equipment issue, peer device P-1, P-2, P-3 and PE-4, PE-5 receives the above-mentioned VPMS information of PE-6 equipment issue, after the equipment of definite this VPMS information of issue is PE-6, peer device P-3, PE-4, it is the VPMS topology of root node that PE-5 adds with PE-6 equipment, this VPMS topology is used for distribution flow media business data message.
Wherein, this method also comprises: the business datum message of switching point equipment cache flow distribution of media;
When network breaks down, receive the protection handoff request that the network equipment sends, carry indication information in this protection handoff request, the business datum message of the Streaming Media distribution in the indication VPMS example;
Indication information according in this protection handoff request sends to the network equipment with the cached business data message.
In the present embodiment, referring to Fig. 4, protection switching point sign P-2 is a switching point equipment, and then P-2 begins as switching point equipment after receiving VPMS information, the business datum message of the Streaming Media distribution in the protected VPMS example of buffer memory; Can also carry out the function that the multi-source choosing is received as the P-2 of switching point equipment, can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 2 network to the VPMS topology 1; Can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 1 network to the VPMS topology 2 yet.
Identical, when the PE-1 fault of the VPMS topology 1 of P-1 device discovery VPMS example, send the protection handoff request to switching point equipment P-2, P-2 receives this protection handoff request, and the business datum message that the Streaming Media of the VPMS example of its buffer memory is distributed is transmitted to VPMS topology 1; Revise forwarding strategy simultaneously, the business datum message that the Streaming Media of VPMS example carrying is distributed is forwarded to VPMS topology 1 from VPMS topology 2, thereby the business datum message that guarantees the Streaming Media distribution that the VPMS example carries is uninterrupted.
Wherein, this method can also comprise:
When the business datum message of the real time flow medium distribution of carrying in the business datum message of the Streaming Media of buffer memory distribution and the VPMS example is synchronous, switching point equipment stops to send the business datum message of the Streaming Media distribution of buffer memory, directly transmits the business datum message of the Streaming Media distribution in the VPMS example.
Also can be the data that lack between the business datum message of the real time flow medium distribution of in the business datum message of the Streaming Media of buffer memory distribution and VPMS example in real time, carrying when not influencing end-user experience, stop to send the business datum message that the Streaming Media of buffer memory is distributed.In the coverage that " not influencing " as described herein comprises also that terminal adopt to retransmit or technology such as level and smooth can be eliminated, enable the packet loss functions of retransmission such as terminal, terminal retransmits can recover 10 milliseconds of data, the data that lack between the business datum message of the real time flow medium distribution of carrying in the business datum message of the Streaming Media of buffer memory distribution and the VPMS example in real time just can think that the data that lack between the business datum message that the real time flow medium that carries in the business datum message of Streaming Media distribution of buffer memory and the real-time VPMS example distributes do not influence end-user experience in 10 milliseconds.
Before the business datum message is sent, need form forwarding decision based on local routing iinformation, local routing iinformation comprises that ip routing information or two layers of routing iinformation or MPLS transmit etc.
The beneficial effect of the embodiment of the invention is: by flooding in the territory or announcing VPMS information, after other PE equipment receive this VPMS information, according to this VPMS information, set up a VPMS topology automatically; And can carry out buffer memory to the business datum message of VPMS Streaming Media distribution; When network breaks down, can switch by protecting, the business datum message that the Streaming Media of buffer memory is distributed sends to relevant device, thereby shortens the time that the VPMS bearer service interrupts, the influence that the fault that minimizing takes place is brought user experience.
Referring to Fig. 5, the embodiment of the invention provides the method for Streaming Media distribution in a kind of virtual special multicasting service, and this method comprises:
501: the business datum message of switching point equipment cache flow distribution of media;
502: when network broke down, switching point equipment received the protection handoff request that the network equipment sends, and carries indication information in this protection handoff request, the business datum message of the Streaming Media distribution in the indication VPMS example;
503: switching point equipment sends to the network equipment according to the indication information in the protection handoff request with the cached business data message.
Wherein, also comprise before in buffer memory, searching the business datum message of Streaming Media distribution:
Receive that PE equipment floods in network or the VPMS information of the mark virtual special multicasting service VPMS example correspondence issued, wherein, VPMS information comprises: the protection switching point information;
According to the protection switching point information, determine switching point equipment;
Perhaps, by manual configuration switching point equipment.
Referring to Fig. 4, protection switching point sign P-2 is a switching point equipment, and then P-2 begins as switching point equipment after receiving VPMS information, the business datum message of the Streaming Media distribution in the protected VPMS example of buffer memory; Can also carry out the function that the multi-source choosing is received as the P-2 of switching point equipment, can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 2 network to the VPMS topology 1; Can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 1 network to the VPMS topology 2 yet.
Identical, when the PE-1 fault of the VPMS topology 1 of P-1 device discovery VPMS example, send the protection handoff request to switching point equipment P-2, P-2 receives this protection handoff request, and the business datum message that the Streaming Media of the VPMS example of its buffer memory is distributed is transmitted to VPMS topology 1; Revise forwarding strategy simultaneously, the business datum message that the Streaming Media of VPMS example carrying is distributed is forwarded to VPMS topology 1 from VPMS topology 2, thereby the business datum message that guarantees the Streaming Media distribution that the VPMS example carries is uninterrupted.
The beneficial effect of the embodiment of the invention is: carry out buffer memory by the business datum message to the distribution of VPMS Streaming Media; When network breaks down, can switch by protecting, the business datum message that the Streaming Media of buffer memory is distributed sends to relevant device, thereby shortens the time that the VPMS bearer service interrupts, the influence that the fault that minimizing takes place is brought user experience.
Referring to Fig. 6, the embodiment of the invention provides the device of the distribution of Streaming Media in a kind of virtual special multicasting service, and this device comprises: receiver module 601, determination module 602 and set up module 603;
Receiver module 601 is used for receiving the VPMS information that PE equipment floods or issues at network;
Wherein, referring to shown in Figure 2, VPMS information comprises:
VPMS sign: be used to identify a VPMS example;
PE sign: be used to identify the PE equipment that participates in making up above-mentioned appointment VPMS example;
The information in the autonomous territory of PE equipment ownership:
Related AC sign: the connection ID between PE and the CE can be vlan ID usually; Shown the AC ID of sequence number from 1 to N among Fig. 2, promptly AC-1ID is to AC-n ID.
Related AC direction: when direction is descending, CE (Customer Edge, customer edge) is a receiving equipment; When direction is up, CE is a transmitting apparatus.
The load balancing Policy Info: comprises PE equipment is protected switching under which kind of situation, for example, PE equipment is finding directly to be connected disconnection with the VPMS source, perhaps when system maintenance is initiatively to switch, when these similar times took place, the load balancing strategy carried out the foundation of load balancing as PE equipment;
Also comprise according to the PE equipment mark related, select the source end of the PE equipment of the longest coupling, also can select the source end of suitable PE equipment according to the jumping figure distance of the PE equipment related with CE as the VPMS topology as the VPMS topology with CE;
Protection switching point information: comprise protection switching point sign, be used to identify switching point equipment, can also comprise protection switching point self characteristics information, such as data in buffer time span (as buffer memory only 2 seconds), aging rule etc.The protection switching point adds a plurality of VPMS topologys under the VPMS example simultaneously, and the protection switching point information comprises the address of this protection switching, the VPMS topology information that is added etc.
These VPMS information are not to be flooded or issued by all PE equipment, but are flooded or issued by specific PE equipment, and wherein, the PE equipment that is connected with the CE of the business datum message of receiving stream media server distribution is specific PE equipment; In the present embodiment, as shown in Figure 3, PE-1 and PE-6 equipment can be used as particular device and flood or issue VPMS message.
Wherein, VPMS information can be separated or be carried out independent transmission with various combinations, so that with the arbitrary format transmission, the Fig. 2 in the present embodiment is a kind of of implementation method.
Concrete dissemination method can be expansion BGP (Border Gateway Protocol, Border Gateway Protocol) Routing Protocol or expansion OSPF (Open Shortest Path First, Open Shortest Path First) Routing Protocol or expansion IS-IS (Intermediate system tointermediate system, the routing protocol of Intermediate System-to-Intermediate System) Routing Protocol carry VPMS information.Bgp protocol can be given the opposite end with the VPMS information announcement, and OSPF or IS-IS can flood VPMS information in the territory.Two kinds of methods can make that all PE equipment automatic receptions are finished automatic discovery and the configuration of VPMS to the load balancing strategy and the protection switching point information of VPMS example in the territory, greatly reduce the configuration effort amount.
Determination module 602 is used for determining the VPMS source according to the VPMS information that receiver module 601 receives;
Concrete, can determine the VPMS source according to equipment place management domain, IP address or from the jumping figure of source end according to the load balancing strategy in the VPMS information.
Set up module 603, the VPMS source that is used for determining with determination module 602 is a root node, sets up the VPMS topology, and this VPMS topology is used for distribution flow media business data message.
Referring to Fig. 3, this device can be P-1, P-2, P-3, PE-2, PE-3, PE-4, PE-5.In the embodiment of the invention, the VPMS example comprises two VPMS topology: VPMS topologys 1 and VPMS topology 2, and they have identical receiving terminal set is CE-2, CE-3, CE-4 and CE-5; Different is, the business datum message of the Streaming Media distribution that VPMS topology 1 receives is from CE-1, and the business datum message of the Streaming Media distribution that VPMS topology 2 receives is from CE-6.PE-1 is linked into CE-1 in the network via AC-1 (connection ID between PE-1 and the CE-1), and PE-6 is linked into CE-6 in the network via AC-6.
PE-1 is as the root node of the VPMS topology 1 of VPMS example, in the territory, flood or issue VPMS information, peer device P (Provider, service provider's equipment)-1, P-2, P-3 and PE-2, equipment such as PE-3 receive the above-mentioned VPMS information of PE-1 equipment issue, peer device P-1, P-2, P-3, PE-2, PE-3 receives the above-mentioned VPMS information of PE-1 equipment issue, after the equipment of definite this VPMS information of issue is PE-1, peer device P-1, PE-2, it is the VPMS topology of root node that PE-3 adds with PE-1 equipment, and this VPMS topology is used for distribution flow media business data message.
For example, load balancing strategy regulation, the longest coupling as the PE equipment mark of root node is preferential, for example be 192.168.0.2, the root node PE of the another one VPMS topology under the same VPMS example is designated 192.168.10.3, and local PE equipment mark is 192.168.0.6, so just selects to join in the VPMS topology that root node PE is designated 192.168.0.2 according to the longest matching strategy and goes.
Identical, PE-6 is as the root node of the VPMS topology 2 of VPMS example, in the territory, flood or issue VPMS information, peer device P-1, P-2, P-3 and PE-4, equipment such as PE-5 receive the above-mentioned VPMS information of PE-6 equipment issue, peer device P-1, P-2, P-3 and PE-4, PE-5 receives the above-mentioned VPMS information of PE-6 equipment issue, after the equipment of definite this VPMS information of issue is PE-6, peer device P-3, PE-4, it is the VPMS topology of root node that PE-5 adds with PE-6 equipment, this VPMS topology is used for distribution flow media business data message.
Wherein, the switching point equipment that identifies in the protection switching point information specifically comprises: cache module, receiver module and processing module;
Wherein, cache module is used for the business datum message of cache flow distribution of media;
Receiver module is used for when network breaks down, and receives the protection handoff request that the network equipment sends, and carries indication information in this protection handoff request, the business datum message of the Streaming Media distribution in the indication VPMS example;
Processing module is used for the indication information according to the protection handoff request of receiver module reception, and the cached business data message is sent to the network equipment.
Referring to Fig. 4, protection switching point sign P-2 is a switching point equipment, and then P-2 begins as switching point equipment after receiving VPMS information, the business datum message of the Streaming Media distribution in the protected VPMS example of buffer memory; Can also carry out the function that the multi-source choosing is received as the P-2 of switching point equipment, can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 2 network to the VPMS topology 1; Can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 1 network to the VPMS topology 2 yet.
Identical, when the PE-1 fault of the VPMS topology 1 of P-1 device discovery VPMS example, send the protection handoff request to switching point equipment P-2, P-2 receives this protection handoff request, and the business datum message that the Streaming Media of the VPMS example of its buffer memory is distributed is transmitted to VPMS topology 1; Revise forwarding strategy simultaneously, the business datum message that the Streaming Media of VPMS example carrying is distributed is forwarded to VPMS topology 1 from VPMS topology 2, thereby the business datum message that guarantees the Streaming Media distribution that the VPMS example carries is uninterrupted.
The beneficial effect of the embodiment of the invention is: by flooding in the territory or announcing VPMS information, after other PE equipment receive this VPMS information, according to this VPMS information, set up a VPMS topology automatically; And can carry out buffer memory to the business datum message of VPMS Streaming Media distribution; When network breaks down, can switch by protecting, the business datum message that the Streaming Media of buffer memory is distributed sends to relevant device, thereby shortens the time that the VPMS bearer service interrupts, the influence that the fault that minimizing takes place is brought user experience.
Referring to Fig. 7, the embodiment of the invention provides the system of Streaming Media distribution in a kind of virtual special multicasting service, and this system comprises PE equipment 701 and the 2nd PE equipment 702;
The one PE equipment 701 is used for the VPMS information that floods or issue at network, and VPMS information comprises the load balancing strategy, and VPMS information is sent to the 2nd PE equipment 702;
The 2nd PE equipment 702 is used to receive the VPMS information that a PE equipment 701 floods or issues, and determines the VPMS source according to this VPMS information; And be root node with the VPMS source of determining, set up the VPMS topology, the VPMS topology is used for distribution flow media business data message.
Wherein, the 2nd PE equipment 702 can be one or more.
The beneficial effect of the embodiment of the invention is: by the VPMS information that floods or issue, according to this VPMS information, set up a VPMS topology automatically in the territory, greatly reduce the workload of configuration, also reduced maintenance costs simultaneously.
Referring to Fig. 8, the embodiment of the invention provides the device of Streaming Media distribution in a kind of virtual special multicasting service, and this device comprises: cache module 801, receiver module 802 and processing module 803;
Cache module 801 is used for the business datum message of cache flow distribution of media;
Receiver module 802 is used for when network breaks down, and receives the protection handoff request that the network equipment sends, and carries indication information in this protection handoff request, the business datum message of the Streaming Media distribution in the indication VPMS example;
Processing module 803 is used for the indication information according to the protection handoff request of receiver module 802 receptions, and the cached business data message is sent to the network equipment.
Wherein, receiver module 802 also is used for receiving PE equipment and floods or the VPMS information of the mark virtual special multicasting service VPMS example correspondence issued at network, and wherein, VPMS information comprises: the protection switching point information;
According to the protection switching point information, determine switching point equipment;
Perhaps, by manual configuration protection switching point.
Referring to Fig. 4, protection switching point sign P-2 is a switching point equipment, and then P-2 begins as switching point equipment after receiving VPMS information, the business datum message of the Streaming Media distribution in the protected VPMS example of buffer memory; Can also carry out the function that the multi-source choosing is received as the P-2 of switching point equipment, can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 2 network to the VPMS topology 1; Can be with the data forwarding of transmitting the VPMS example that comes from VPMS topology 1 network to the VPMS topology 2 yet.
Identical, when the PE-1 fault of the VPMS topology 1 of P-1 device discovery VPMS example, send the protection handoff request to switching point equipment P-2, P-2 receives this protection handoff request, and the business datum message that the Streaming Media of the VPMS example of its buffer memory is distributed is transmitted to VPMS topology 1; Revise forwarding strategy simultaneously, the business datum message that the Streaming Media of VPMS example carrying is distributed is forwarded to VPMS topology 1 from VPMS topology 2, thereby the business datum message that guarantees the Streaming Media distribution that the VPMS example carries is uninterrupted.
The beneficial effect of the embodiment of the invention is: carry out buffer memory by the business datum message that the Streaming Media of VPMS example is distributed; When network breaks down, can switch by protecting, the business datum message that the Streaming Media of buffer memory is distributed sends to relevant device, thereby shortens the time that the VPMS bearer service interrupts, the influence that the fault that minimizing takes place is brought user experience.
Referring to Fig. 9, the embodiment of the invention provides the system of Streaming Media distribution in a kind of virtual special multicasting service, and this system comprises: the switching point equipment 901 and the network equipment 902;
The network equipment 902 is used for sending the protection handoff request to switching point equipment 901, and receives the business datum message that switching point equipment 901 sends.
The beneficial effect of the embodiment of the invention is: carry out buffer memory by the business datum message that the Streaming Media of VPMS example is distributed; When network breaks down, can switch by protecting, the business datum message that the Streaming Media of buffer memory is distributed sends to relevant device, thereby shortens the time that the VPMS bearer service interrupts, the influence that the fault that minimizing takes place is brought user experience.
The embodiment of the invention can utilize software to realize that corresponding software programs can be stored in the storage medium that can read, for example, and in the hard disk of computer, buffer memory or the CD.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. the method for Streaming Media distribution in the virtual special multicasting service is characterized in that described method comprises:
Receive the VPMS information that provider edge equipment PE floods in network or issues, described VPMS information comprises the load balancing strategy;
Determine the VPMS source according to described VPMS information;
With definite VPMS source is root node, sets up the VPMS topology;
According to described VPMS topology, distribution flow media business data message.
2. method according to claim 1 is characterized in that, described VPMS information comprises the protection switching point information, and described protection switching point information comprises protection switching point sign, is used to identify switching point equipment.
3. method according to claim 2 is characterized in that, described method comprises:
The business datum message of the switching point equipment cache flow distribution of media of described protection switching point sign;
When network broke down, described switching point equipment received the protection handoff request that the network equipment sends, and according to described protection handoff request, described data in buffer message is sent to the described network equipment.
4. the method for Streaming Media distribution in the virtual special multicasting service is characterized in that described method comprises:
The business datum message of switching point equipment cache flow distribution of media;
When network broke down, described switching point equipment received the protection handoff request that the network equipment sends, and according to described protection handoff request, described cached business data message is sent to the described network equipment.
5. method according to claim 4 is characterized in that, searches described Streaming Media distribution service data message in the described buffer memory and also comprises before:
Receive that PE provider edge equipment floods in network or the VPMS information of the mark virtual special multicasting service VPMS example correspondence issued, wherein, described VPMS information comprises: the protection switching point information;
According to described protection switching point information, determine switching point equipment;
Perhaps, by manual configuration switching point equipment.
6. the device of Streaming Media distribution in the virtual special multicasting service is characterized in that described device comprises: receiver module, and determination module is set up module and distribution module;
Receiver module is used for receiving the VPMS information that PE equipment floods or issues at network;
Determination module is used for determining the VPMS source according to the VPMS information that described receiver module receives that described VPMS information comprises the load balancing strategy;
Set up module, the VPMS source that is used for determining with described determination module is a root node, sets up the VPMS topology;
Distribution module is used for according to the described VPMS topology that module is set up, the distribution flow media business data message set up.
7. device according to claim 6 is characterized in that, described VPMS information comprises the protection switching point information, and described protection switching point information comprises protection switching point sign, is used to identify switching point equipment.
8. device according to claim 7 is characterized in that, described switching point equipment comprises: cache module, receiver module and processing module;
Described cache module is used for the business datum message of cache flow distribution of media;
Described receiver module is used for when network breaks down, and receives the protection handoff request that the network equipment sends;
Described processing module is used for the protection handoff request according to described receiver module reception, and described cached business data message is sent to the described network equipment.
9. the system of Streaming Media distribution in the virtual special multicasting service is characterized in that described system comprises: PE equipment and the 2nd PE equipment;
A described PE equipment is used for the VPMS information that floods or issue at network, and described VPMS information comprises the load balancing strategy, and described VPMS information is sent to described the 2nd PE equipment;
Described the 2nd PE equipment is used to receive the VPMS information that a described PE equipment floods or issues, and determines the VPMS source according to described VPMS information; And be root node with the VPMS source of determining, set up the VPMS topology, described VPMS topology is used for distribution flow media business data message.
10. the device of Streaming Media distribution in the virtual special multicasting service is characterized in that described device comprises: cache module, receiver module and processing module;
Described cache module is used for the business datum message of cache flow distribution of media;
Described receiver module is used for when network breaks down, and receives the protection handoff request that the network equipment sends;
Described processing module is used for the protection handoff request according to described receiver module reception, and described cached business data message is sent to the described network equipment.
11. the device based on virtual special multicasting service VPMS stream media bearing distribution service according to claim 10 is characterized in that,
Described receiver module also is used for receiving PE provider edge equipment and floods or the VPMS information of the mark virtual special multicasting service VPMS example correspondence issued at network, and wherein, described VPMS information comprises: the protection switching point information;
According to described protection switching point information, determine switching point equipment;
Perhaps, by manual configuration switching point equipment.
12. the system of Streaming Media distribution is characterized in that described system comprises: the switching point equipment and the network equipment in the virtual special multicasting service;
Described switching point equipment is used for the business datum message of cache flow distribution of media; When network broke down, described switching point equipment received the protection handoff request that the described network equipment sends, and according to described protection handoff request, described data in buffer message is sent to the described network equipment;
The described network equipment is used for sending the protection handoff request to described switching point equipment, and receives the described business datum message that described switching point equipment sends.
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| CN102263699A (en) * | 2011-08-15 | 2011-11-30 | 杭州华三通信技术有限公司 | Load balancing implementation method and device applied to MPLS TP (multiprotocol label switch transport profile) |
| WO2012006893A1 (en) * | 2010-07-14 | 2012-01-19 | 华为技术有限公司 | Ethernet multicast method and device |
| WO2013123676A1 (en) * | 2012-02-24 | 2013-08-29 | 华为技术有限公司 | Method and device for determining establishment of multi-protocol label switching traffic engineering tunnel |
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| CN102263699B (en) * | 2011-08-15 | 2014-12-24 | 杭州华三通信技术有限公司 | Load balancing implementation method and device applied to MPLS TP (multiprotocol label switch transport profile) |
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| WO2013123676A1 (en) * | 2012-02-24 | 2013-08-29 | 华为技术有限公司 | Method and device for determining establishment of multi-protocol label switching traffic engineering tunnel |
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| CN105981330A (en) * | 2013-11-06 | 2016-09-28 | 瑞典爱立信有限公司 | Enabling Load Balancing in a Network Virtualization Overlay Architecture |
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