CN101262436A - Multicast duplication method, device and line card - Google Patents
Multicast duplication method, device and line card Download PDFInfo
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- CN101262436A CN101262436A CNA2008100892060A CN200810089206A CN101262436A CN 101262436 A CN101262436 A CN 101262436A CN A2008100892060 A CNA2008100892060 A CN A2008100892060A CN 200810089206 A CN200810089206 A CN 200810089206A CN 101262436 A CN101262436 A CN 101262436A
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Abstract
The embodiment of the invention discloses a multicast replication method which comprises the following steps: an inlet line card divides inlet flow into at least two portions of flow and sends all or part sub-flow into an outlet line card by a switching network; the outlet line card receiving the sub-flow replicates the received sub-flow and sends the sub-flow to other outlet line cards which do not receive the sub-flow by the switching network. The embodiment of the invention also discloses a device and a line card for multicast replication. The inlet flow can reach the maximum bandwidth of the interface of the switching network by adopting the method, the device and the line card of the invention, therefore, bandwidth utilization ratio of the inlet line card can be improved.
Description
Technical field
The present invention relates to technical field of data processing, particularly a kind of multicast duplicating method, device and ply-yarn drill.
Background technology
The business of moving on the traditional IP all adopts unicast mode, and the network equipment also just designs according to the unicast traffic model mostly.(flux of multicast increases day by day on the network, and the multicast performance of legacy network equipment is had higher requirement for Internet Protocol Television, the development of novel multicast service such as IPTV) along with Web TV.
Jumbo router and Ethernet switch equipment substantially all are distributed processing frameworks, and its number of users of hanging down is numerous, and multicast performance requires very high.The equipment of distributed processing framework comprises a plurality of ply-yarn drills, and each ply-yarn drill all has the processing unit of oneself.Fig. 1 shows the block diagram of distributed apparatus, and as shown in the figure, this equipment can comprise an inlet ply-yarn drill and a plurality of outlet ply-yarn drill.The multicast replication of distributed processing framework generally comprises two-stage: the first order is that the inlet ply-yarn drill copies to the outlet ply-yarn drill; The second level is a plurality of physics or the logic outlet that the outlet ply-yarn drill copies to self.Usually, duplicate the second level is physics or the logic outlet that the outlet ply-yarn drill copies to self, and such duplicating by shared buffer memory mechanism finished, and do not relate to distributed treatment.
Below introduce a kind of implementation that the first order is duplicated in the prior art.
Can be as shown in Figure 2, to comprise that 10 outlet ply-yarn drills are example.Message duplicates 10 parts by the inlet ply-yarn drill, sends to each outlet ply-yarn drill by switching network.The situation relevant with bandwidth, concrete, be 10G with the bandwidth of ply-yarn drill, the valid data bandwidth between ply-yarn drill and the switch network bandwidth also describes for 10G.Bandwidth is that the inlet ply-yarn drill of 10G is as inlet, give 10 outlet ply-yarn drills owing to need duplicate 10 parts of messages, therefore maximum multicast inlet flow rate is 1G, that is to say that arrival line snaps in a mouthful flow and is 1G to the maximum, just reach 10G because duplicate 10 parts of messages under such situation, reached the valid data bandwidth value of ply-yarn drill and switching network maximum.
In research and practice process to prior art, the inventor finds to exist in the prior art following problem:
Because arrival line calorie requirement copy packet also sends to by switching network and respectively to export ply-yarn drill, and the total flow after duplicating can not surpass the maximum bandwidth between inlet ply-yarn drill and the switching network, like this, the maximum inlet flow rate of inlet ply-yarn drill will be lower than the total bandwidth that the inlet ply-yarn drill is supported, the bandwidth availability ratio of inlet ply-yarn drill is low.For example top ply-yarn drill bandwidth is 10G, valid data bandwidth between ply-yarn drill and the switching network also is 10G, and the situation that comprises 10 outlet ply-yarn drills: because the arrival line calorie requirement sends to 10 outlet ply-yarn drills with these 10 parts of messages by switching network after duplicating 10 parts of messages, though maximum bandwidth is 10G between inlet ply-yarn drill and the switching network, and the inlet flow rate maximum of inlet ply-yarn drill can only be 1G, and bandwidth availability ratio is low.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of multicast duplicating method, device and ply-yarn drill, to realize improving bandwidth availability ratio.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of multicast duplicating method, device and ply-yarn drill to be achieved in that
A kind of multicast duplicating method comprises:
The inlet ply-yarn drill resolves at least two one's share of expenses for a joint undertaking flows with inlet flow rate, and part or all of sub-flow is sent to the outlet ply-yarn drill by switching network;
Receiving sub-flow that the outlet ply-yarn drill of described sub-flow will receive duplicates the back and sends to the outlet ply-yarn drill that does not receive described sub-flow by switching network.
A kind of multicast replication device comprises:
The inlet ply-yarn drill is used for inlet flow rate is resolved at least two one's share of expenses for a joint undertaking flows;
Switching network is used to transmit all or part of sub-flow;
The outlet ply-yarn drill, the sub-flow that is used for receiving duplicates the back and sends to the outlet ply-yarn drill that other does not receive described sub-flow by switching network.
A kind of inlet ply-yarn drill comprises:
Inbound port is used to receive flow;
Resolving cell is used for the flow that inbound port receives is resolved at least two sub-flows;
Outbound port is used for the sub-flow that resolving cell decomposes is sent respectively.
A kind of outlet ply-yarn drill includes port, loopback unit, resolving cell and outbound port, wherein,
Inbound port is used to receive sub-flow;
The loopback unit is used for other outlet ply-yarn drill is not received and sub-flow that the clamping of this egress line is received is looped back to inbound port from outbound port;
Copied cells is used for the sub-flow of loopback is duplicated;
Outbound port is used for the sub-flow after duplicating is sent respectively.
The technical scheme that is provided by the above embodiment of the invention as seen, the inlet ply-yarn drill can decompose inlet flow rate, all or part of sub-flow in the different sub-flow after decomposing is sent to the outlet ply-yarn drill, like this, the inlet flow rate of inlet ply-yarn drill can be unrestricted, can reach the maximum bandwidth of switching network interface, thereby improve the bandwidth availability ratio of inlet ply-yarn drill.Further, each export that ply-yarn drill makes full use of and switching network between bandwidth, an one's share of expenses for a joint undertaking flow that receives is duplicated the back send to other outlet ply-yarn drill, thereby finally respectively exporting ply-yarn drill all has complete flow, has realized multicast replication by switching network.
Description of drawings
Fig. 1 is the block diagram of distributed apparatus in the prior art;
Fig. 2 is a schematic diagram of realizing a kind of scheme of multicast replication in the prior art;
Fig. 3 is the flow chart of the present invention one method embodiment;
Fig. 4 is the schematic diagram of the present invention one method embodiment;
Fig. 5 is the schematic diagram of other method embodiment of the present invention;
Fig. 6 is the block diagram of multicast replication device of the present invention;
Fig. 7 is the enter the mouth block diagram of ply-yarn drill embodiment of the present invention;
Fig. 8 exports the block diagram of ply-yarn drill embodiment for the present invention.
Embodiment
The embodiment of the invention provides a kind of multicast duplicating method, device and ply-yarn drill.
In order to make those skilled in the art person understand the present invention program better, the embodiment of the invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 3 shows the flow chart of multicast duplicating method embodiment of the present invention, as figure, comprising:
301: the inlet ply-yarn drill resolves at least two one's share of expenses for a joint undertaking flows with inlet flow rate, and part or all of sub-flow is sent to the outlet ply-yarn drill by switching network.
In this step, the inlet ply-yarn drill mainly can be the work of finishing traffic sharing, be about to be decomposed into some little flows from the flow that inlet is come in, it is sub-flow, and the sub-assignment of traffic after these are decomposed is to different paths, like this, the sub-flow on the mulitpath is equivalent to enter the mouth ply-yarn drill from the total flow of coming in that enters the mouth.And then, by different switching networks, the sub-flow on the different paths is sent to different outlet ply-yarn drills.
According to the needs of actual flux of multicast, can select the section port ply-yarn drill to share follow-up replication work, rather than all outlet ports ply-yarn drill participate in duplicating.Therefore, can be each that sends in whole outlet ply-yarn drills, also can be each that issue in the section port ply-yarn drill.
What each outlet was received on ply-yarn drill all is independent portion, promptly with other arbitrary outlet ply-yarn drill on receive inequality.
Like this, when all outlet ports ply-yarn drill all participates in the situation of subsequent duplicate, be each the one's share of expenses for a joint undertaking flow in the part or all of sub-flow after decomposing is all sent to each outlet ply-yarn drill in man-to-man mode by switching network.
And when the inlet ply-yarn drill be that each the one's share of expenses for a joint undertaking flow in the parton flow after decomposing is sent to the situation of an outlet ply-yarn drill by switching network, also comprise: the sub-flow of another part after the inlet ply-yarn drill will decompose duplicates the back and sends to each by switching network and export ply-yarn drill.Concrete, can be that the sub-flow of another part after described inlet ply-yarn drill will decompose duplicates from finishing after self outbound port is looped back to self inbound port, and the sub-flow after will duplicating send to each by switching network and export ply-yarn drill.
302: receive sub-flow that the outlet ply-yarn drill of described sub-flow will receive and duplicate the back and send to the outlet ply-yarn drill that does not receive described sub-flow by switching network.
Like this, the outlet ply-yarn drill that receives described sub-flow sends to other not outlet ply-yarn drill of this sub-flow by switching network after self exclusive sub-flow of being sent by the inlet ply-yarn drill is duplicated.Like this, finally each piece outlet ply-yarn drill all can obtain the whole flow of ply-yarn drill upper inlet inflow that enters the mouth, thereby finished flux of multicast is copied to each outlet ply-yarn drill, and then each outlet ply-yarn drill can send to relevant device with whole sub-flows.
Concrete, receive sub-flow that the outlet ply-yarn drill of described sub-flow will receive and duplicate, and the sub-flow after will duplicating sends to the outlet ply-yarn drill that other does not have described sub-flow by switching network from finishing after self outbound port is looped back to self inbound port.
In the scheme of prior art, in fact multicast has only utilized the inlet ply-yarn drill and the maximum performance of switching network of system, and the switch network bandwidth on other ply-yarn drill (promptly exporting ply-yarn drill) all has a lot of free time, is not carried out utilization.Therefore when the inlet available bandwidth utilance of inlet ply-yarn drill is not high, also there are switching network and the low problem of bandwidth availability ratio that exports between ply-yarn drill.
In fact, the bottleneck of multicast performance is that the bandwidth capacity (being made as B) between monolithic ply-yarn drill and the switching network is limited, if multicast need copy to n piece outlet ply-yarn drill, maximum flux of multicast can only be B/n on the ply-yarn drill that enters the mouth so.
Among the invention described above method embodiment, the inlet ply-yarn drill can decompose inlet flow rate, part or all of sub-flow in the different sub-flow after decomposing is sent to different outlet ply-yarn drills, like this, the inlet flow rate of inlet ply-yarn drill can be unrestricted, equal the maximum stream flow that enters the mouth, thereby improved the bandwidth availability ratio of inlet ply-yarn drill.Further, each export that ply-yarn drill makes full use of and switching network between bandwidth, an one's share of expenses for a joint undertaking flow that receives is duplicated the back send to other outlet ply-yarn drill, thereby finally respectively exporting ply-yarn drill all has complete flow, has realized multicast replication by switching network.
Below exemplifying several object lessons is illustrated.As preceding, still the bandwidth of hypothesis inlet ply-yarn drill and outlet ply-yarn drill is 10G here, and the bandwidth between inlet ply-yarn drill, outlet ply-yarn drill and the switching network also is 10G.
Fig. 4 shows the principle of a specific embodiment of the inventive method.
This method embodiment comprises:
S1: the inlet ply-yarn drill is that the message of 10G is decomposed into mutually different 10 parts (the sub-flow 1 among Fig. 4～sub-flow 10 does not illustrate entirely) with inlet flow rate, and every part of bandwidth is 1G.
S2: the 10 parts of sub-flows of difference (the sub-flow 1 among Fig. 4～sub-flow 10 does not illustrate entirely) after the inlet ply-yarn drill will decompose send to 10 outlet ply-yarn drills (the outlet ply-yarn drill 1 among Fig. 4～outlet ply-yarn drill 10 does not illustrate entirely) respectively by switching network.
Below be that example is illustrated with outlet ply-yarn drill 1, other exports ply-yarn drill similarly.
S3: the sub-flow 1 that will get of outlet ply-yarn drill 1 duplicates 9 parts after self outbound port is looped back to self inbound port.
S4: the 9 one's share of expenses for a joint undertaking flows 1 that outlet ply-yarn drill 1 will duplicate send to outlet ply-yarn drill 2～outlet ply-yarn drill 10 respectively by switching network.
Similarly, other outlet ply-yarn drill 2～outlet ply-yarn drill 10 is also handled like this, sends to other outlet ply-yarn drill after an one's share of expenses for a joint undertaking flow that soon self receives duplicates.
Like this, outlet ply-yarn drill 1 is after initially receiving the sub-flow 1 sent of inlet ply-yarn drill, received the sub-flow 2 that outlet ply-yarn drill 2 is sent again, the sub-flow 3 that outlet ply-yarn drill 3 is sent, ..., the sub-flow 10 that outlet ply-yarn drill 10 is sent, like this, collected sub-flow 1～sub-flow 10 on the final outlet ply-yarn drill, to snap in mouthful total flow identical for arrival line when initial.
Same, outlet ply-yarn drill 2 is after initially receiving the sub-flow 2 sent of inlet ply-yarn drill, received the sub-flow 1 that outlet ply-yarn drill 1 is sent again, the sub-flow 3 that outlet ply-yarn drill 3 is sent, ..., the sub-flow 10 that outlet ply-yarn drill 10 is sent, like this, collected sub-flow 1～sub-flow 10 on the final outlet ply-yarn drill, to snap in mouthful total flow identical for arrival line when initial.
Other outlet ply-yarn drill and the like.
In this example, the inlet actual flow of inlet ply-yarn drill can be 10G, inlet flow rate is decomposed into the sub-flow of 10 parts of 1G, different flow after can realizing decomposing sends to different outlet ply-yarn drills, such inlet utilizable flow is much larger than 1G of the prior art, can reach the maximum bandwidth of switching network interface, improve the bandwidth availability ratio of inlet ply-yarn drill greatly.Further, each export that ply-yarn drill makes full use of and switching network between bandwidth, send to other outlet ply-yarn drill by switching network after the flow of a 1G that receives duplicated 9 parts, thereby finally respectively exporting ply-yarn drill all has complete 10G flow, realize multicast replication, also improved the bandwidth availability ratio that respectively exports between ply-yarn drill and the switching network greatly.
Fig. 5 shows the principle of a specific embodiment of the inventive method.
This method embodiment comprises:
T1: the inlet ply-yarn drill is that the message of 5.5G is decomposed into mutually different 11 parts (the sub-flow 0 among Fig. 5～sub-flow 10 does not illustrate entirely) with inlet flow rate, and every part of bandwidth is 0.5G.
T2: the 10 parts of different flows (the sub-flow 1 among Fig. 5～sub-flow 10 does not illustrate entirely) after the inlet ply-yarn drill will decompose send to 10 outlet ply-yarn drills (the outlet ply-yarn drill 1 among Fig. 5～outlet ply-yarn drill 10 does not illustrate entirely) respectively by switching network.
T3: send to 10 outlet ply-yarn drills respectively by switching network after the inlet ply-yarn drill duplicates 10 parts with sub-flow 0.
Concrete, the inlet ply-yarn drill can be directly sub-flow 0 to be duplicated 10 parts, sends to 10 outlet ply-yarn drills respectively by switching network afterwards.In addition, the inlet ply-yarn drill also can be that sub-flow 0 is duplicated 10 parts after self outbound port is looped back to self inbound port, and then sends to 10 outlet ply-yarn drills respectively by switching network.
Like this, each outlet ply-yarn drill has obtained sub-flow 0.
Below be that example is illustrated with outlet ply-yarn drill 1, other exports ply-yarn drill similarly.
T4: the sub-flow 1 that will get of outlet ply-yarn drill 1 duplicates 9 parts after self outbound port is looped back to self inbound port.
T5: the 9 one's share of expenses for a joint undertaking flows 1 that outlet ply-yarn drill 1 will duplicate send to outlet ply-yarn drill 2～outlet ply-yarn drill 10 respectively by switching network.
Similarly, other outlet ply-yarn drill 2～outlet ply-yarn drill 10 is also handled like this, sends to other outlet ply-yarn drill after a flow that soon self receives duplicates.
Like this, outlet ply-yarn drill 1 is after initially receiving the sub-flow 1 sent of inlet ply-yarn drill, received the sub-flow 2 that outlet ply-yarn drill 2 is sent again, the sub-flow 3 that outlet ply-yarn drill 3 is sent ..., the sub-flow 10 that outlet ply-yarn drill 10 is sent, like this, collected sub-flow 1～sub-flow 10 on the final outlet ply-yarn drill, added from the sub-flow 0 that obtains of inlet ply-yarn drill, to snap in mouthful total flow identical for arrival line when initial.
Same, outlet ply-yarn drill 2 is after initially receiving the flow 2 sent of inlet ply-yarn drill, received the sub-flow 1 that outlet ply-yarn drill 1 is sent again, the sub-flow 3 that outlet ply-yarn drill 3 is sent ..., the sub-flow 10 that outlet ply-yarn drill 10 is sent, like this, collected sub-flow 1～sub-flow 10 on the final outlet ply-yarn drill, added from the sub-flow 0 that obtains of inlet ply-yarn drill, to snap in mouthful total flow identical for arrival line when initial.
Other outlet ply-yarn drill and the like.
In this example, the inlet actual flow of inlet ply-yarn drill can be 10G, 5G among the inlet flow rate 5.5G is decomposed into the sub-flow of 10 parts of 0.5G, and the different flow after can realizing decomposing sends to different outlet ply-yarn drills, will remain simultaneously and send to different outlet ply-yarn drills respectively after the 0.5G flow duplicates.Under such mode, the inlet utilizable flow has improved the bandwidth availability ratio of inlet ply-yarn drill greatly much larger than 1G of the prior art.Further, each export that ply-yarn drill makes full use of and switching network between bandwidth, send to other outlet ply-yarn drill by switching network after the flow of a 0.5G that receives duplicated 9 parts, thereby finally respectively exporting ply-yarn drill all has complete 5.5G flow, realize multicast replication, also improved the bandwidth availability ratio that respectively exports between ply-yarn drill and the switching network greatly.
In above-mentioned two object lessons, can look actual conditions, the outlet ply-yarn drill that set to participate in not is to be whole outlet ply-yarn drills in the distributed apparatus, but the outlet of a part wherein ply-yarn drill.
In addition, the mode of the above-mentioned decomposition inlet flow rate that provides all is average decomposition, can certainly not be average decomposition, does not limit here.
Below introduce multicast replication device embodiment of the present invention, this device can comprise inlet ply-yarn drill 601, switching network 602 and outlet ply-yarn drill 603 as shown in Figure 6, wherein,
Inlet ply-yarn drill 601 is used for inlet flow rate is resolved at least two one's share of expenses for a joint undertaking flows;
Outlet ply-yarn drill 603, the sub-flow that is used for receiving duplicates the back and sends to the outlet ply-yarn drill 603 that other does not receive described sub-flow by switching network 602.
In the said apparatus, inlet ply-yarn drill 601 decomposes inlet flow rate, and the part or all of sub-flow in the different sub-flow after will decomposing sends to an outlet ply-yarn drill 603 by switching network 602; The sub-flow that each outlet ply-yarn drill 603 will receive duplicates the back and sends to the outlet ply-yarn drill 603 that other does not receive described sub-flow by switching network 602.
Wherein, inlet ply-yarn drill 601 mainly can be the work of finishing traffic sharing, be about to be decomposed into some little sub-flows from the flow that inlet is come in, and the little sub-assignment of traffic after these are decomposed is to different paths, like this, the sub-flow on the mulitpath is equivalent to enter the mouth ply-yarn drill 601 from the total flow of coming in that enters the mouth.And then, by different switching networks 602, the sub-flow on the different paths is sent to different outlet ply-yarn drills 603.
What each outlet was received on ply-yarn drill 603 all is independent portion, promptly with other arbitrary outlet ply-yarn drill 603 on receive inequality.Like this, when all outlet ports ply-yarn drill 603 all participates in the situation of subsequent duplicate, be each the one's share of expenses for a joint undertaking flow in the part or all of sub-flow after decomposing is all sent to each outlet ply-yarn drill 603 in man-to-man mode by switching network 602.
Each outlet ply-yarn drill 603 sends to the outlet ply-yarn drill 603 that other does not receive this sub-flow by switching network 602 after self exclusive sub-flow of being sent by inlet ply-yarn drill 601 is duplicated.Like this, finally each piece outlet ply-yarn drill 603 all can obtain the whole flow of ply-yarn drill 601 upper inlets inflow that enters the mouth, thereby finished flux of multicast is copied to each outlet ply-yarn drill 603, and then each outlet ply-yarn drill 603 can send to relevant device with whole flows.
Utilize said apparatus to realize that the concrete grammar of multicast replication is as described above described in the method embodiment.
Below introduce inlet ply-yarn drill embodiment of the present invention, it can include port 701, resolving cell 702 and outbound port 703 as shown in Figure 7, wherein,
Resolving cell 702 is used for the flow that inbound port 701 receives is decomposed at least two one's share of expenses for a joint undertaking flows;
For example, after described inbound port 701 received flow, resolving cell 702 was decomposed into some parts of different sub-flows with flow, and the sub-flow after outbound port 703 will decompose is from sending to each outlet ply-yarn drill by switching network.
Preferably, described inlet ply-yarn drill can also comprise copied cells 704, is used for the replicon flow;
Correspondingly, described outbound port 703 also is used for the sub-flow after duplicating is sent respectively.
Can be that copied cells 704 directly duplicates sub-flow, the sub-flow that will be duplicated by outbound port 703 sends respectively afterwards.
Described inlet ply-yarn drill can also comprise loopback unit 705, is used for the sub-flow of all or part of described decomposition is looped back to inbound port 701 from outbound port 703;
Correspondingly, described copied cells 704 duplicates the sub-flow of loopback unit 705 loopbacks.
For example, after loopback unit 705 is looped back to the inbound port 701 of self with sub-flow from self outbound port 703, is finished by copied cells 704 and to duplicate, the sub-flow after outbound port 703 further will duplicate sends respectively.
Utilize above-mentioned inlet ply-yarn drill to realize that the concrete grammar of multicast replication is as described above described in the method embodiment.
Below introduce outlet ply-yarn drill embodiment of the present invention, it can include port 801, loopback unit 802 as shown in Figure 8, copied cells 803 and outbound port 804, wherein,
Inbound port 801 is used to receive sub-flow;
Loopback unit 802 is used for other outlet ply-yarn drill is not received and sub-flow that the clamping of this egress line is received is looped back to inbound port 801 from outbound port 804;
Copied cells 803 is used for the sub-flow of loopback is duplicated;
Outbound port 804 is used for the sub-flow after duplicating is sent respectively.
For example, after inbound port 801 received sub-flow, loopback unit 802 was looped back to self inbound port with the sub-flow of described reception from self outbound port 804, was finished by copied cells 803 and duplicated, and the sub-flow after outbound port 804 further will duplicate sends respectively.
Utilize above-mentioned outlet ply-yarn drill to realize that the concrete grammar of multicast replication is as described above described in the method embodiment.
By above embodiment as seen, the inlet ply-yarn drill can decompose inlet flow rate, and the different sub-flow after decomposing is sent to different outlet ply-yarn drills, like this, the inlet flow rate of inlet ply-yarn drill can be unrestricted, equals the maximum stream flow that enters the mouth, thereby improved the bandwidth availability ratio of inlet ply-yarn drill.Further, each export that ply-yarn drill makes full use of and switching network between bandwidth, an one's share of expenses for a joint undertaking flow that receives is duplicated the back send to other outlet ply-yarn drill, thereby finally respectively exporting ply-yarn drill all has complete flow, has realized multicast replication by switching network.
Though described the embodiment of the invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, wish that appended claim comprises these distortion and variation and do not break away from spirit of the present invention.
Claims (10)
1, a kind of multicast duplicating method is characterized in that, comprising:
The inlet ply-yarn drill resolves at least two one's share of expenses for a joint undertaking flows with inlet flow rate, and part or all of sub-flow is sent to the outlet ply-yarn drill by switching network;
Receiving sub-flow that the outlet ply-yarn drill of described sub-flow will receive duplicates the back and sends to the outlet ply-yarn drill that does not receive described sub-flow by switching network.
2, the method for claim 1 is characterized in that, described with part or all of sub-flow by switching network send to the outlet ply-yarn drill comprise:
Each one's share of expenses for a joint undertaking flow in the part or all of sub-flow after decomposing is all sent to each outlet ply-yarn drill in man-to-man mode by switching network.
3, the method for claim 1 is characterized in that, when the inlet ply-yarn drill be that the parton flow is sent to the outlet ply-yarn drill by switching network, also comprise:
The sub-flow of another part after the inlet ply-yarn drill will decompose duplicates the back and sends to each outlet ply-yarn drill by switching network.
4, method as claimed in claim 3 is characterized in that, sends to each outlet ply-yarn drill by switching network after the sub-flow of another part after described inlet ply-yarn drill will decompose duplicates and comprises:
Another part flow after described inlet ply-yarn drill will decompose duplicates from finishing after self outbound port is looped back to self inbound port, and the sub-flow after will duplicating sends to each outlet ply-yarn drill by switching network.
5, the method for claim 1 is characterized in that, sends to other outlet ply-yarn drill that does not receive described sub-flow by switching network after the sub-flow that described each outlet ply-yarn drill will receive duplicates and comprises:
Described each outlet ply-yarn drill flow that will receive duplicates from finishing after self outbound port is looped back to self inbound port, and the sub-flow after will duplicating sends to the outlet ply-yarn drill that other does not receive described sub-flow by switching network.
6, a kind of multicast replication device is characterized in that, comprising:
The inlet ply-yarn drill is used for inlet flow rate is resolved at least two one's share of expenses for a joint undertaking flows;
Switching network is used to transmit all or part of described sub-flow;
The outlet ply-yarn drill, the sub-flow that is used for receiving duplicates the back and sends to the outlet ply-yarn drill that other does not receive described sub-flow by switching network.
7, a kind of inlet ply-yarn drill is characterized in that, comprising:
Inbound port is used to receive flow;
Resolving cell is used for the flow that inbound port receives is resolved at least two sub-flows;
Outbound port is used for the sub-flow that resolving cell decomposes is sent respectively.
8, inlet ply-yarn drill as claimed in claim 7 is characterized in that, also comprises copied cells, is used to duplicate the sub-flow of all or part of described decomposition;
Correspondingly, described outbound port also is used for the sub-flow after duplicating is sent respectively.
9, inlet ply-yarn drill as claimed in claim 8 is characterized in that, also comprises the loopback unit, is used for the sub-flow of all or part of described decomposition is looped back to inbound port from outbound port;
Correspondingly, described copied cells duplicates the sub-flow of loopback.
10, a kind of outlet ply-yarn drill is characterized in that, includes port, loopback unit, resolving cell and outbound port, wherein,
Inbound port is used to receive sub-flow;
The loopback unit is used for other outlet ply-yarn drill is not received and sub-flow that the clamping of this egress line is received is looped back to inbound port from outbound port;
Copied cells is used for the sub-flow of loopback is duplicated;
Outbound port is used for the sub-flow after duplicating is sent respectively.
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Cited By (9)
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| CN102195931A (en) * | 2010-03-04 | 2011-09-21 | 华为技术有限公司 | Method for multicast traffic forwarding in equipment, network equipment and line card |
| CN101459607B (en) * | 2008-12-31 | 2011-11-02 | 华为技术有限公司 | Packet transmitting method and router |
| WO2012103704A1 (en) * | 2011-06-24 | 2012-08-09 | 华为技术有限公司 | Multicast duplication method, device and system |
| CN103297355A (en) * | 2013-06-20 | 2013-09-11 | 福建星网锐捷网络有限公司 | Data flow forwarding method and system and exchanger |
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