CN103503370A - Load decreasing method and apparatus - Google Patents
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- CN103503370A CN103503370A CN201180002160.4A CN201180002160A CN103503370A CN 103503370 A CN103503370 A CN 103503370A CN 201180002160 A CN201180002160 A CN 201180002160A CN 103503370 A CN103503370 A CN 103503370A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
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Abstract
Disclosed are a load decreasing method and apparatus, relating to the technical field of communications, and improving the number of multicast groups that can be borne in a network while effectively decreasing the load pressure generated on a router by a multicast message when the number of the accessing multicast groups increases. The method includes: first receiving multicast data sent by a multicast source and generating a multicast route according to the multicast data; and then generating a null register message according to the multicast route and packaging the multicast source address and multicast group address of each of at least two generated null register messages into a first identical preset message and finally sending the first preset message to an RP router. The present invention is applied to the technical field of communications.
Description
The method and device technical field of load reduction
The present invention relates to the method and device of communication technical field, more particularly to load reduction.Background technology
Current IP (Internet Protocol, network interconnection agreement）The mainstream technology of multicast is PIM SM (Protocol Independent Multicast-Sparse Mode, Protocol Independent Multicast-sparse mode）, multicast source and specified DR routers in the technology implementation process（Designated Router) it is connected, DR routers periodically send empty registration Nun-Register to convergence RP (Rendezvous Point) router, and (sky is registered）The blunt texts of ^, then RP routers to DR routers postback Register Stop (registration stop）Message.But as DR routers connect substantial amounts of multicast source or multicast group, DR routers are accomplished by periodically sending substantial amounts of Nun-Register messages to RP routers, and then RP routers need to send substantial amounts of Register Sto messages to DR routers.Now, the blunt text of a large amount of Nun-Register ability and the blunt texts of Register Stop ^ that are transmitted between DR routers and RP routers add the load pressure of DR routers and RP routers, reduce the convergence of DR routers and RP routers, and make its fluctuation of service, so as to seriously limit the multicast group quantity that can be carried in network.The content of the invention
Embodiments of the invention provide a kind of method and device of load reduction, when the multicast group quantity increase of access, can effectively reduce the load pressure that multicast message is produced to router, improve the multicast group quantity that can be carried in network.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
A kind of method of load reduction, including：
DR routers receive the multicast packet that multicast source is sent, and generate Multicast Routing according to the multicast packet；
The DR routers generate empty logon message according to the Multicast Routing；
The empty respective multicast source address of logon message and multicast group address described at least two of generation are packaged in the same first default 4 blunt text by the DR routers；
Described first default message is sent to RP routers.
A kind of device of load reduction, including：
Generation unit is received, the multicast packet for receiving multicast source transmission, and Multicast Routing is generated according to the multicast packet；
Generation unit, for generating empty logon message according to the Multicast Routing；
Processing unit, for the empty respective multicast source address of logon message and multicast group address described in receive at least two to be packaged in the same first default 4 blunt text；
Transmitting element, for the described first default message to be sent into RP routers.
The method and device of load reduction provided in an embodiment of the present invention, receives the multicast packet that multicast source is sent, and generate Multicast Routing according to the multicast packet first；Then empty logon message is generated according to the Multicast Routing, the empty respective multicast source address of logon message and multicast group address described at least two of generation are packaged in the same first default message, the described first default message is finally sent to RP routers.Just blunt text and the blunt text of Reg i s ter S top ability add the load pressure of DR routers and RP routers to a large amount of Nu l l-Reg i s t er that prior art is transmitted between DR routers and RP routers, so as to seriously limit the multicast group quantity that can be carried in network.And the method and device of load reduction provided in an embodiment of the present invention, at least two empty logon messages of generation are packed by D R routers, when the multicast group quantity increase of access, the load pressure that multicast message is produced to router is effectively reduced, the multicast group quantity that can be carried in network is improved.
Brief description of the drawings
Fig. 1 is the method flow diagram for the load reduction that the embodiment of the present invention one is provided；
Fig. 2 is the apparatus structure schematic diagram for the load reduction that the embodiment of the present invention one is provided；
Fig. 3 is the method flow diagram for the load reduction that the embodiment of the present invention two is provided；
Fig. 4 is the apparatus structure schematic diagram for the load reduction that the embodiment of the present invention two is provided；
Fig. 5 is that the first default type of message that the embodiment of the present invention two is provided is sky logon message type
When, the first default message format schematic diagram；
When Fig. 6 is that the type of the first default message that the embodiment of the present invention two is provided is Batch-Register, the first default message format schematic diagram；
Fig. 7 is the second default type of message that the embodiment of the present invention two is provided when being stopped registration messages type, the second default message format schematic diagram；
When Fig. 8 is that the type of the second default message that the embodiment of the present invention two is provided is Batch-Register Stop, the second default message format schematic diagram.Embodiment
The method and device to load balancing of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.Embodiment one
The present embodiment provides a kind of method of load reduction, as shown in figure 1, methods described includes：
101st, DR routers receive the multicast packet that multicast source is sent, and generate Multicast Routing according to the multicast packet.
Specifically, DR routers are received after the multicast packet of multicast source transmission, judge whether the multicast packet has carried out correct configuration on the DR routers.When the multicast packet has carried out correct configuration on the DR routers, Multicast Routing is generated.
102nd, DR routers generate empty logon message according to the Multicast Routing.
103rd, the empty respective multicast source address of logon message and multicast group address described at least two of generation are packaged in the same first default 4 blunt text by DR routers.
The empty logon message number is preset MTU (the Maximum Transmission Uni t, MTU of the transmission end interface of the DR routers of message by transmission described first）Depending on, when the MTU of the transmission end interface is larger, the empty logon message number upper limit that can be packaged can be also correspondingly improved.When the MTU of the transmission end interface is smaller, the empty logon message number upper limit that can be packaged can also be reduced accordingly.
104th, the described first default message is sent to RP routers.
Wherein, RP routers are received after the described first default message, by the state for the multiple multicast sources safeguarded in the first default message.
Meanwhile, the respective multicast source address of at least two stopped registration messages and multicast group address are packaged in the same second default message by RP routers, and the described second default message is sent into the DR routers.
The present embodiment provides a kind of device of load reduction, as shown in Fig. 2 the device of the load reduction includes：Receive generation unit 21, generation unit 22, processing unit 23, transmitting element 24.
Generation unit 21 is received, the multicast packet for receiving multicast source transmission, and Multicast Routing is generated according to the multicast packet.
Specifically, DR routers are received after the multicast packet of multicast source transmission, judge whether the multicast packet has carried out correct configuration on the DR routers.When the multicast packet has carried out correct configuration on the DR routers, Multicast Routing is generated.
Generation unit 22, for generating empty logon message according to the Multicast Routing.
Processing unit 23, for the empty respective multicast source address of logon message and multicast group address described in receive at least two to be packaged in the same first default blunt texts of ^.
The empty logon message number is preset MTU (the Max imum Transm i s s i on Un i t, MTU of the transmission end interface of the DR routers of message by transmission described first）Depending on, when the MTU of the transmission end interface is larger, the empty logon message number upper limit that can be packaged can be also correspondingly improved.When the MTU of the transmission end interface is smaller, the empty logon message number upper limit that can be packaged can also be reduced accordingly.
Transmitting element 24, RP routers are sent to by the described first default message.
Wherein, RP is received after the described first default message, by the state for the multiple multicast sources safeguarded in the first default message.
Meanwhile, the respective multicast source address of at least two stopped registration messages and multicast group address are packaged in the same second default message by RP routers, and the described second default message is sent into the DR routers.
The method and device of load reduction provided in an embodiment of the present invention, receives the multicast packet that multicast source is sent, and generate Multicast Routing according to the multicast packet first；Then empty logon message is generated according to the Multicast Routing, by the empty respective multicast source address of logon message and group described at least two of generation
Broadcast group address to be packaged in the same first default message, be finally sent to the described first default message
RP routers.Just blunt text and the blunt text of Reg i s ter S top ability add the load pressure of DR routers and RP routers to a large amount of Nu l l-Reg i s ter that prior art is transmitted between DR routers and RP routers, so as to seriously limit the multicast group quantity that can be carried in network.And the method and device of load reduction provided in an embodiment of the present invention, at least two empty logon messages of generation are packed by D R routers, when the multicast group quantity increase of access, the load pressure that multicast message is produced to router is effectively reduced, the multicast group quantity that can be carried in network is improved.
Embodiment two
The present embodiment provides a kind of method of load reduction, as shown in figure 3, methods described includes：301st, DR routers receive the multicast packet that multicast source is sent, and generate Multicast Routing according to the multicast packet.
302nd, the MTU MTU of DR routers detection transmission end interface corresponding with the described first default message.
303rd, the MTU that sends end interface corresponding with the described first default message that DR routers are detected according to determines the empty logon message number packed.
The empty logon message number is preset MTU (the Max imum Transmi s s i on Un i t, MTU of the transmission end interface of the DR routers of message by transmission described first）Depending on, when the MTU of the transmission end interface is larger, the empty logon message number upper limit that can be packaged can be also correspondingly improved.When the MTU of the transmission end interface is smaller, the empty logon message number upper limit that can be packaged can also be reduced accordingly.
304th, DR routers generate empty logon message according to the Multicast Routing.
305th, the empty respective multicast source address of logon message and multicast group address described at least two of generation are packaged in the same first default 4 blunt text by DR routers.
Wherein, the type of the described first default message is empty logon message type, including：Message number static fields, at least two 4 blunt literary respective multicast source address and multicast group address of empty registration.
The form of described first default message is that the Re served fields in existing empty logon message form are changed into Ent ry count, and the empty registration ability of the addition at least two blunt literary respective multicast source address and multicast group address in 4 blunt literary forms of existing sky registration.
Wherein, Entry count denote in the described first default 4 blunt text how many sky to register just blunt text containing, and Reserved represents to retain.
Described first default message format is as shown in Figure 5.
Or described first default 4 blunt literary types be Batch-Register, including：At least two 4 blunt literary respective multicast source address and multicast group address of empty registration.
Now the described first default message is that the type of existing stopped registration messages form is set to new batch registration Batch-Register types, and the 4 blunt literary respective multicast source address and multicast group address of empty registration of addition at least two in existing registration stops the blunt literary forms of ^.
Described first default message format is as shown in Figure 6.
306th, the first default message is sent to RP routers by DR routers.
307th, DR routers receive the second default message that RP routers are sent.
Wherein, refreshing the blunt text of at least two registration stoppings 4 being included in the described second default message after DR receives the described second default message, each multicast source address and the corresponding registration of multicast group address stop timer.
The type of described second default message is stopped registration messages type, including：Message number static fields, at least two registrations stop 4 blunt literary respective multicast source address and multicast group address.
Described second default message is that the Reserved in existing stopped registration messages form is changed into Entry count, and the described second default text includes at least two registrations and stops ^ blunt literary respective multicast source address and multicast group address.
Wherein Entry count denote in the described second default blunt texts of ^ how many registration to stop just blunt text containing, and Reserved represents to retain.
Now the described second default message format is as shown in Figure 7.
Or described second default 4 blunt literary types be that batch registration stops Batch-Register Stop, including：At least two registrations stop 4 blunt literary respective multicast source address and multicast group address.
Described second default message format is that the type of existing stopped registration messages form is set into new type Batch-Register Stop, and the described second default blunt texts of ^ include at least two registrations and stop 4 blunt literary respective multicast source address and multicast group address.
Now the described second default message format is as shown in Figure 8.
308th, when using Anycast aggregation router Anycast RP technologies, according to the forwarding configuration information pre-set, the described first default message is transmitted to specified RP by the RP routers.
The present embodiment also provides a kind of device of load reduction, as shown in figure 4, including：Receive generation unit 41, generation unit 42, processing unit 43, transmitting element 44, detection unit 45, determining unit 46, receiving unit 47.
Generation unit 41 is received, the multicast packet for receiving multicast source transmission, and Multicast Routing is generated according to the multicast packet.
Generation unit 42, for generating empty logon message according to the Multicast Routing.
Processing unit 43, for the empty respective multicast source address of logon message and multicast group address described at least two of generation to be packaged in the same first default blunt texts of ^.
Wherein, the type of the described first default message is empty logon message type, including：Message number static fields, at least two 4 blunt literary respective multicast source address and multicast group address of empty registration.
The form of described first default message is that the Reserved fields in existing empty logon message form are changed into Entry count, and the empty registration ability of the addition at least two blunt literary respective multicast source address and multicast group address in 4 blunt literary forms of existing sky registration.
Wherein, Entry count denote in the described first default 4 blunt text how many sky to register just blunt text containing, and Reserved represents to retain.Described first default message format is as shown in Figure 5.
Or described first default 4 blunt literary types be Batch-Register, including：At least two 4 blunt literary respective multicast source address and multicast group address of empty registration.
Now the described first default message is that new batch registration Batch-Register types will be set in the type of existing stopped registration messages form, and the 4 blunt literary respective multicast source address and multicast group address of empty registration of addition at least two in existing registration stops the blunt literary forms of ^.
Described first default message format is as shown in Figure 6.
While using processing unit 43, detection unit 45 and determining unit 46 are called.
Detection unit 45, the MTU MTU for detecting transmission end interface corresponding with the described first default message.
Determining unit 46, the MTU that sends end interface corresponding with the described first default message for being detected according to determines the empty logon message number packed.
Transmitting element 44, for the described first default message to be sent into RP routers.
Receiving unit 47, the second default message for receiving the transmission of RP routers, the described second default just blunt text carries at least two existing registrations and stops 4 blunt literary respective multicast source address and multicast group address.
Wherein, the registration for refreshing the multiple stopped registration messages included in the described second default message after DR receives the described second default message stops timer.
The type of described second default message is stopped registration messages type, including：Message number static fields, at least two registrations stop 4 blunt literary respective multicast source address and multicast group address.
Wherein, refreshing the blunt text of at least two registration stoppings 4 being included in the described second default message after DR receives the described second default message, each multicast source address and the corresponding registration of multicast group address stop timer.
The type of described second default message is stopped registration messages type, including：Message number static fields, at least two registrations stop 4 blunt literary respective multicast source address and multicast group address.
Described second default message is that the Reserved in existing stopped registration messages form is changed into Entry count, and the described second default text includes at least two registrations and stops ^ blunt literary respective multicast source address and multicast group address.
Wherein Entry count denote in the described second default blunt texts of ^ how many registration to stop just blunt text containing, and Reserved represents to retain.
Now the described second default message format is as shown in Figure 7.
Or described second default 4 blunt literary types be that batch registration stops Batch-Register Stop, including：At least two registrations stop ^ blunt literary respective multicast source address and multicast group address.
Described second default message format is that the type of existing stopped registration messages form is set into new type Batch-Register Stop, and the described second default blunt texts of ^ include at least two registrations and stop 4 blunt literary respective multicast source address and multicast group address.
Now the described second default message format is as shown in Figure 8.The method and device of load reduction provided in an embodiment of the present invention, receives the multicast packet that multicast source is sent first, and according to the multicast packet
Generate Multicast Routing；Then empty logon message is generated according to the Multicast Routing, 4 blunt literary respective multicast source address and multicast group address of empty registration described at least two of generation are packaged in the same first default message, the described first default message is finally sent to RP routers.The a large amount of Nun-Reg i s ter messages and Reg i s ter S to messages that prior art is transmitted between DR routers and RP routers add the load pressure of DR routers and RP routers, so as to seriously limit the multicast group quantity that can be carried in network.And the method and device of load reduction provided in an embodiment of the present invention, at least two empty logon messages of generation are packed by DR routers, when the multicast group quantity increase of access, the load pressure that multicast message is produced to router is effectively reduced, the multicast group quantity that can be carried in network is improved.
It is described above; only embodiment of the invention, but protection scope of the present invention is not limited thereto, any one skilled in the art the invention discloses technical scope in; change or replacement can be readily occurred in, should be all included within the scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (1)
- Claims1st, a kind of method of load reduction, it is characterised in that including：Specify DR routers to receive the multicast packet that multicast source is sent, and Multicast Routing is generated according to the multicast packet；The DR routers generate empty logon message according to the Multicast Routing；The empty respective multicast source address of logon message and multicast group address described at least two of generation are packaged in the same first default 4 blunt text by the DR routers；Described first default message is sent to convergence RP routers.2nd, the method for load reduction according to claim 1, it is characterised in that the type of the described first default message is empty logon message type, including：Message number static fields, at least two 4 blunt literary respective multicast source address and multicast group address of empty registration；Or,Described first type for presetting text is batch registration Batch-Register, including：At least two 4 blunt literary respective multicast source address and multicast group address of empty registration.3rd, the method for load reduction according to claim 1 or 2, it is characterised in that also include：The MTU MTU of DR routers detection transmission end interface corresponding with the described first default message;The MTU that sends end interface corresponding with the described first default message that the DR routers are detected according to determines the empty logon message number packed.4th, the method for the load reduction according to claim 1-3 any one, it is characterised in that also include：DR routers receive the second default message that RP routers are sent, and the described second default message carries at least two registrations and stops 4 blunt literary respective multicast source address and multicast group address.5th, the method for the load reduction according to claim 1-4 any one, it is characterised in that the type of the described second default message is stopped registration messages type, including：Message number static fields, at least two registrations stop 4 blunt literary respective multicast source address and multicast group address；Or,The described second blunt literary types of default ^ are that batch registration stops Batch-Register Stop, including：At least two registrations stop ^ blunt literary respective multicast source address and multicast group address. 6th, the method for the load reduction according to claim 1-5 any one, it is characterised in that also include：When using Anycast aggregation router Any ca s t RP technologies, according to the forwarding configuration information being pre-configured with, the described first default message is transmitted to specified RP by the RP routers.7th, a kind of device of load reduction, it is characterised in that including：Generation unit is received, the multicast packet for receiving multicast source transmission, and Multicast Routing is generated according to the multicast packet；Generation unit, for generating empty logon message according to the Multicast Routing；Processing unit, for the empty respective multicast source address of logon message and multicast group address described in receive at least two to be packaged in the same first default 4 blunt text；Transmitting element, for the described first default message to be sent into convergence RP routers.8th, the device of load reduction according to claim 7, it is characterised in that the type of the described first default message is empty logon message type, including：Message number static fields, at least two 4 blunt literary respective multicast source address and multicast group address of empty registration；Or,Described first type for presetting text is batch registration Ba t ch-Reg i s t er, including：At least two 4 blunt literary respective multicast source address and multicast group address of empty registration.9th, the device of the load reduction according to claim 7 or 8, it is characterised in that also include：Detection unit, the MTU MTU for detecting transmission end interface corresponding with the described first default message;Determining unit, the MTU that sends end interface corresponding with the described first default message for being detected according to determines the empty logon message number packed.10, the device of the load reduction according to claim 7-9 any one, it is characterised in that also include：Receiving unit, the second default message for receiving the transmission of RP routers, the described second default message carries at least two registrations and stops 4 blunt literary respective multicast source address and multicast group address.11, the device of the load reduction according to claim 10, it is characterised in that the type of the described second default message is stopped registration messages type, including：Message number static fields, at least two The individual respective multicast source address of stopped registration messages and multicast group address；Or,The type of described second default message stops Batch-Register Stop for batch registration, including：The respective multicast source address of at least two stopped registration messages and multicast group address.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2011/081347 WO2013060002A1 (en) | 2011-10-26 | 2011-10-26 | Load decreasing method and apparatus |
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| CN103503370A true CN103503370A (en) | 2014-01-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503507A (en) * | 2002-11-26 | 2004-06-09 | ��Ϊ��������˾ | Method for realizing registration from multicast source to collection point |
| CN101212325A (en) * | 2006-12-26 | 2008-07-02 | 上海贝尔阿尔卡特股份有限公司 | Combined registering method and device in multicast communication network |
| US20090059923A1 (en) * | 2007-02-05 | 2009-03-05 | Huawei Technologies Co., Ltd. | Multicast method and multicast routing method |
| CN101547110A (en) * | 2009-05-14 | 2009-09-30 | 杭州华三通信技术有限公司 | Method, system and device for registering multicast source |
| CN101808004A (en) * | 2010-03-23 | 2010-08-18 | 中兴通讯股份有限公司 | Method and system for realizing Anycast-RP mechanism |
-
2011
- 2011-10-26 WO PCT/CN2011/081347 patent/WO2013060002A1/en active Application Filing
- 2011-10-26 CN CN201180002160.4A patent/CN103503370A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1503507A (en) * | 2002-11-26 | 2004-06-09 | ��Ϊ��������˾ | Method for realizing registration from multicast source to collection point |
| CN101212325A (en) * | 2006-12-26 | 2008-07-02 | 上海贝尔阿尔卡特股份有限公司 | Combined registering method and device in multicast communication network |
| US20090059923A1 (en) * | 2007-02-05 | 2009-03-05 | Huawei Technologies Co., Ltd. | Multicast method and multicast routing method |
| CN101547110A (en) * | 2009-05-14 | 2009-09-30 | 杭州华三通信技术有限公司 | Method, system and device for registering multicast source |
| CN101808004A (en) * | 2010-03-23 | 2010-08-18 | 中兴通讯股份有限公司 | Method and system for realizing Anycast-RP mechanism |
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Application publication date: 20140108 |