CN105591942A - Method and device for optimizing multicast protocol - Google Patents
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Abstract
The invention discloses a method of optimizing a multicast protocol. A neighbor tracking table for all members of a downstream router is built; when pruning messages sent by all members of the downstream router via neighbor tracking links are received, all members are judged to be offline, and related information for all members in the neighbor tracking table is deleted; and a pruning echo message is generated according to the state of the neighbor tracking table and returned to the downstream router. The invention also discloses a device for optimizing the multicast protocol. According to the method of optimizing the multicast protocol provided by the invention, the network transmission efficiency is enhanced, and the burden of an upstream router is lessened.
Description
Technical field
The present invention relates to Internet Transmission field, relate in particular to the method and apparatus of optimizing multicast protocol.
Background technology
PIM (ProtocolIndependentMulticast, agreement independent multicast) agreement is the core of multicast servicesHeart agreement. Formed by one group of standard agreement, comprise PIM-DM (ProtocolIndependentMulticastDenseMode, agreement independent multicast-dense mode), PIM-SM (ProtocolIndependentMulticast-SparseMode, agreement independent multicast-sparse mode), PIM-SSM (ProtocolIndependentMulticastSourceSpecificMode, agreement independent multicast-source-specific multicast mouldFormula) etc. Wherein, PIMSM is the one of multicast routing protocol, i.e. the PIM agreement of sparse mode. MainBe used for the network that multicast receivers disperses, topology is complicated. Multicast packet recipient and sender itBetween set up multicast transmit tree, thereby correct multicast data forwarding.
It is that the one that PIM-SM agreement is supported reduces on link that multicast neighbor is followed the tracks of (NeighborTracking)The scheme that beta pruning postpones. Enabling this function needs all multicast routers on link all to support that neighbours follow the tracks of, andAnd consult to pass through. Upstream router can track record downstream neighbor add state, downstream router isForbid the inhibition that adds of oneself. But as press RFC (RequestForComments, Request for Comment) and assistView realizes this function, can produce some problems: owing to having forbidden the inhibition that adds in downstream, whenever downstream hasWhen the router adding leaves, the every other router adding all can send new adding, underTrip adds in a lot of situations, and downstream links in short-term interior burden can increase the weight of, the processing load of upstream routerAlso can increase the weight of, and if have equipment under unsettled situation, repeatedly add and leave, thisly affect meeting moreAdd serious.
Summary of the invention
Main purpose of the present invention is to provide a kind of method and apparatus of optimizing multicast protocol, is intended to solveNetwork transmission efficiency is low, the upstream router problem that over-burden.
For achieving the above object, a kind of method of optimizing multicast protocol provided by the invention, described optimization groupThe method of broadcasting agreement comprises the following steps:
Set up neighbours' Track Table of all members of downstream router;
Follow the tracks of by neighbours the beta pruning report that link sends if receive all members of described downstream routerWen Shi, judges all member's off-lines, deletes the relevant information of all members in this neighbours' Track Table;
Generate beta pruning echo message according to the state of neighbours' Track Table, return to described downstream router.
Preferably, if the described all members that receive described downstream router follow the tracks of link by neighboursSend prune packet time, judge all member's off-lines, delete all members' in this neighbours' Track TableAfter the step of relevant information, also comprise:
The state of current upstream router is not added to state from adding state to switch to.
The described state according to neighbours' Track Table generates beta pruning echo message, returns to described downstream routerStep before also comprise:
Whether the source IP address of the message that will return described in judgement is consistent with object upper reaches field address, if groundLocation is consistent, beta pruning echo message is returned to described downstream router.
Preferably, the described state according to neighbours' Track Table generates beta pruning echo message, return to described underBefore the step of trip router, also comprise:
Overtime timer is set, treats that time-out time arrives, return to beta pruning echo message.
The described state according to neighbours' Track Table generates beta pruning echo message, returns to described downstream routerStep after also comprise:
If receive downstream router off-line member send join message after, judge described memberReach the standard grade, increase described member's relevant information to this neighbours' Track Table.
In order to solve above-mentioned technical problem, the present invention further provides a kind of device of optimizing multicast protocol,The device of described optimization multicast protocol comprises:
Set up module, for setting up neighbours' Track Table of all members of downstream router;
Beta pruning module, if follow the tracks of chain for all members that receive described downstream router by neighboursRoad send prune packet time, judge all member's off-lines, delete all members in this neighbours' Track TableRelevant information;
Feedback module, for generate beta pruning echo message according to the state of neighbours' Track Table, described in returning toDownstream router.
Preferably, the device of described optimization multicast protocol also comprises:
Handover module, for not adding state by the state of current upstream router from adding state to switch to.
Preferably, the device of described optimization multicast protocol also comprises:
Judge module, for the source IP address and the object upper reaches field address that judge the described message that will return isNo consistent, if address is consistent, beta pruning echo message is returned to described downstream router.
Preferably, the device of described optimization multicast protocol also comprises:
Overtime module, for overtime timer is set, treats that time-out time arrives, and returns to beta pruning echo message.
Preferably, the device of described optimization multicast protocol also comprises:
Add module, if for receive downstream router off-line member send Join join messageAfter, judge that described member reaches the standard grade, increase described member's relevant information to this neighbours' Track Table, andReturn to PruneEcho beta pruning echo message to described downstream router.
The method of optimization multicast protocol provided by the invention, by setting up all members' of downstream router neighbourOccupy Track Table; If all members that receive described downstream router follow the tracks of by neighbours, link sendsWhen prune packet, judge all member's off-lines, delete the relevant letter of all members in this neighbours' Track TableBreath; Generate beta pruning echo message according to the state of neighbours' Track Table, return to described downstream router. ThisThe method of the optimization multicast protocol that invention provides, has promoted network transmission efficiency, has alleviated upstream routerBurden.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that the present invention optimizes method first embodiment of multicast protocol;
Fig. 2 is the schematic flow sheet that the present invention optimizes method second embodiment of multicast protocol;
Fig. 3 is the schematic flow sheet that the present invention optimizes method the 3rd embodiment of multicast protocol;
Fig. 4 is the schematic flow sheet that the present invention optimizes method the 4th embodiment of multicast protocol;
Fig. 5 is the schematic flow sheet that the present invention optimizes method the 5th embodiment of multicast protocol;
Fig. 6 is the high-level schematic functional block diagram that the present invention optimizes device first embodiment of multicast protocol;
Fig. 7 is the high-level schematic functional block diagram that the present invention optimizes device second embodiment of multicast protocol;
Fig. 8 is the high-level schematic functional block diagram that the present invention optimizes device the 3rd embodiment of multicast protocol;
Fig. 9 is the high-level schematic functional block diagram that the present invention optimizes device the 4th embodiment of multicast protocol;
Figure 10 is the high-level schematic functional block diagram that the present invention optimizes device the 5th embodiment of multicast protocol;
Realization, functional characteristics and the advantage of the object of the invention, in connection with embodiment, are done further with reference to accompanying drawingExplanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, and be not used in limitDetermine the present invention.
The invention provides a kind of method of optimizing multicast protocol, with reference to Fig. 1, Fig. 1 is that the present invention optimizes multicastThe schematic flow sheet of method first embodiment of agreement, in the first embodiment, described optimization multicast protocolMethod comprise the following steps:
Step S100, set up neighbours' Track Table of all members of downstream router.
The device of the optimization multicast protocol of upstream router is set up neighbours' Track Table, and this neighbours' Track Table comprisesThe all members' of downstream router relevant information, such as all members of neighbours' Track Table comprise A, B, C,D, E and F member.
If step S200 receives all members of described downstream router and follows the tracks of link by neighbours and send outSend prune packet time, judge all member's off-lines, delete the phase of all members in this neighbours' Track TablePass information.
If it is logical that the device of the optimization multicast protocol of upstream router receives all members of downstream routerCross neighbours follow the tracks of NeighborTracking link send Prune prune packet time, judge all one-tenthMember's off-line is deleted all members' relevant information in neighbours' Track Table, and now, this neighbours' Track Table isEmpty list.
Step S300, generate beta pruning echo message according to the state of neighbours' Track Table, return to described downstream roadBy device.
The device of the optimization multicast protocol of upstream router recognizes after all member's off-lines, generates PruneEcho beta pruning echo message, and PruneEcho beta pruning echo message is returned to downstream router, triggerThe downstream router member of off-line rejoins, and if downstream router detects reception is not PruneEcho beta pruning echo message, but will not locate when the Prune prune packet that other downstream routers sendReason, thus the quantity of message processing reduced, alleviate the burden of downstream links.
The method of the optimization multicast protocol that the present embodiment provides, has reduced the quantity of message processing; AlleviateThe burden of downstream links; Thereby promote network transmission efficiency, alleviated upstream router burden.
Particularly, referring to Fig. 2, Fig. 2 is the flow process that the present invention optimizes method second embodiment of multicast protocolSchematic diagram, on the basis of the first embodiment, also comprises after described step S200:
Step S200A, the state of current upstream router is not added to state from adding state to switch to.
If the device of the optimization multicast protocol of upstream router receives all members of downstream router and sends outSend Prune prune packet time, judge all off-lines of all members, delete all members of this neighbours' Track TableRelevant information, now, this neighbours' Track Table is empty list, does not add from adding Join state to switch toNoInfo state.
Further, referring to Fig. 3, Fig. 3 is the stream that the present invention optimizes method the 3rd embodiment of multicast protocolJourney schematic diagram, on the basis of the first embodiment, comprises before described step S300:
Source IP address and the object upper reaches field address of the message that will return described in step S300A, judgement areNo consistent, if address is consistent, beta pruning echo message is returned to described downstream router.
The device of the optimization multicast protocol of upstream router judges source IP address and the order of the message that will returnUpper reaches Up-Stream field address whether consistent, if address is consistent, judge that this message is PruneEcho beta pruning echo message, returns to described downstream router by this message; If inconsistent, sentenceDisconnected this message is not PruneEcho beta pruning echo message, this message is not returned to described downstream router,Thereby reduce the treating capacity of message.
Further, referring to Fig. 4, Fig. 4 is the stream that the present invention optimizes method the 4th embodiment of multicast protocolJourney schematic diagram, on the basis of the first embodiment, also comprises before described step S300:
Step S300B, overtime timer is set, treats that time-out time arrives, return to beta pruning echo message.
The device of the optimization multicast protocol of upstream router arranges overtime timer, time-out time to be setThen, return to PruneEcho beta pruning echo message, thereby avoided routing link in the short time to be jammed.The setting-up time of overtime timer can freely be adjusted according to the actual message processing time.
Further, referring to Fig. 4, Fig. 4 is the stream that the present invention optimizes method the 4th embodiment of multicast protocolJourney schematic diagram, on the basis of the first embodiment, also comprises after described step S300:
If step S400 receive downstream router off-line member send join message after, sentenceDisconnected described member reaches the standard grade, and increases described member's relevant information to this neighbours' Track Table.
The member of downstream router off-line receives after the Prune beta pruning echo message of upstream router transmission,Send a Join and join message, the device of the optimization multicast protocol of upstream router receives downstream routeAfter the Join that the member of device off-line sends joins message, judge that the member of off-line reaches the standard grade again, thereby increaseAdd described member's relevant information to this neighbours' Track Table, and if downstream router detects receptionNot PruneEcho beta pruning echo message, but the Prune prune packet that other downstream routers sendShi Ze disregards, thereby has reduced the quantity of message processing, has alleviated the burden of downstream links.
Further, the present invention also provides a kind of device of optimizing multicast protocol, and referring to Fig. 6, Fig. 6 is thisThe high-level schematic functional block diagram of device first embodiment of multicast protocol is optimized in invention, in the first embodiment,The device of described optimization multicast protocol comprises:
Set up module 10, for setting up neighbours' Track Table of all members of downstream router;
Beta pruning module 20, if followed the tracks of by neighbours for one of them member who receives downstream routerLink send Prune prune packet time, judge described member's off-line, delete institute in this neighbours' Track TableState member's relevant information;
Feedback module 30, for generate beta pruning echo message according to the state of neighbours' Track Table, returns to instituteState downstream router.
The module 10 of setting up of the device of the optimization multicast protocol of upstream router is set up neighbours' Track Table, this neighbourOccupy the relevant information that Track Table comprises all members of downstream router, such as all members of neighbours' Track TableComprise A, B, C, D, E and F member.
If the beta pruning module 20 of the device of the optimization multicast protocol of upstream router receives downstream routerAll members by neighbours follow the tracks of NeighborTracking link send Prune prune packet time,Judge all member's off-lines, in neighbours' Track Table, delete all members' relevant information, now, shouldNeighbours' Track Table is empty list.
The feedback module 30 of the device of the optimization multicast protocol of upstream router recognizes all member's off-linesAfter, generate PruneEcho beta pruning echo message, and PruneEcho beta pruning echo message is returned to downTrip router, the downstream router member who triggers off-line rejoins, and if downstream router detectsWhat receive is not PruneEcho beta pruning echo message, but the Prune that other downstream routers send cutsBranch is disregarded when message, thereby has reduced the quantity of message processing, has alleviated the burden of downstream links.
The device of the optimization multicast protocol that the present embodiment provides, has reduced the quantity of message processing; AlleviateThe burden of downstream links; Thereby promote network transmission efficiency, alleviated upstream router burden.
Particularly, referring to Fig. 7, the device of the optimization multicast protocol that the present embodiment provides, described optimization multicastThe device of agreement also comprises:
Handover module 40, for not adding shape by the state of current upstream router from adding state to switch toState.
If the handover module 40 of the device of the optimization multicast protocol of upstream router receives downstream routerAll members send Prune message time, judge all off-lines of all members, delete this neighbours' Track TableAll members' relevant information, now, this neighbours' Track Table is empty list, from adding Join state to switchFor not adding NoInfo state.
Particularly, referring to Fig. 8, the device of the optimization multicast protocol that the present embodiment provides, described optimization multicastThe device of agreement also comprises:
Judge module 50, for judging source IP address and the object upper reaches field ground of the described message that will returnWhether location is consistent, if address is consistent, beta pruning echo message returned to described downstream router.
The judge module 50 of the device of the optimization multicast protocol of upstream router judges the message that will returnWhether source IP address is consistent with object upper reaches Up-Stream field address, if address is consistent, and judgementThis message is PruneEcho beta pruning echo message, this message is returned to described downstream router; AsFruit is inconsistent, judges that this message is not PruneEcho beta pruning echo message, does not return to this messageDescribed downstream router, thus the treating capacity of message reduced.
Preferably, referring to Fig. 9, the device of the optimization multicast protocol that the present embodiment provides, described optimization multicastThe device of agreement also comprises:
Overtime module 60, for overtime timer is set, treats that time-out time arrives, and returns to PruneEcho and cutsBranch echo message.
The overtime module 60 of the device of the optimization multicast protocol of upstream router arranges overtime timer, waits to establishFixed time-out time then, returns to PruneEcho beta pruning echo message, thereby has avoided in the short timeRouting link is jammed. The setting-up time of overtime timer can freely be adjusted according to the actual message processing timeWhole.
Preferably, referring to Figure 10, the device of the optimization multicast protocol that the present embodiment provides, described optimization groupThe device of broadcasting agreement also comprises:
Add module 70, if for receive downstream router off-line member send join message after,Judge that described member reaches the standard grade, increase described member's relevant information to this neighbours' Track Table.
The member of downstream router off-line receives after the Prune beta pruning echo message of upstream router transmission,Send a Join and join message, the module 70 that adds of the device of the optimization multicast protocol of upstream router connectsReceive downstream router off-line member send Join join message after, judge the member of off-line againReach the standard grade, thereby the relevant information that increases described member is to this neighbours' Track Table, and if downstream routerWhat reception detected is not PruneEcho beta pruning echo message, but other downstream routers transmissionsWhen Prune prune packet, disregard, thereby reduced the quantity of message processing, alleviated downstream linksBurden.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, everyUtilize equivalent structure or the conversion of equivalent flow process that description of the present invention and accompanying drawing content do, or directly orConnect and be used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a method of optimizing multicast protocol, is characterized in that, the method bag of described optimization multicast protocolDraw together following steps:
Set up neighbours' Track Table of all members of downstream router;
Follow the tracks of by neighbours the beta pruning report that link sends if receive all members of described downstream routerWen Shi, judges all member's off-lines, deletes the relevant information of all members in this neighbours' Track Table;
Generate beta pruning echo message according to the state of neighbours' Track Table, return to described downstream router.
2. the method for described optimization multicast protocol as claimed in claim 1, is characterized in that, if describedWhen all members that receive described downstream router follow the tracks of by neighbours the prune packet that link sends,Judge all member's off-lines, afterwards also delete the step of all members' relevant information in this neighbours' Track TableComprise:
The state of current upstream router is not added to state from adding state to switch to.
3. the method for described optimization multicast protocol as claimed in claim 1, is characterized in that described basisThe state of neighbours' Track Table generates beta pruning echo message, before also returns to the step of described downstream routerComprise:
Whether the source IP address of the message that will return described in judgement is consistent with object upper reaches field address, ifAddress is consistent, beta pruning echo message is returned to described downstream router.
4. the method for described optimization multicast protocol as claimed in claim 1, is characterized in that described basisThe state of neighbours' Track Table generates beta pruning echo message, before also returns to the step of described downstream routerComprise:
Overtime timer is set, treats that time-out time arrives, return to beta pruning echo message.
5. the method for the optimization multicast protocol as described in claim 1 to 4 any one, is characterized in that,The described state according to neighbours' Track Table generates beta pruning echo message, returns to the step of described downstream routerAfter rapid, also comprise:
If receive downstream router off-line member send join message after, judge described memberReach the standard grade, increase described member's relevant information to this neighbours' Track Table.
6. a device of optimizing multicast protocol, is characterized in that, the device bag of described optimization multicast protocolDraw together:
Set up module, for setting up neighbours' Track Table of all members of downstream router;
Beta pruning module, if follow the tracks of chain for all members that receive described downstream router by neighboursRoad send prune packet time, judge all member's off-lines, delete all members in this neighbours' Track TableRelevant information;
Feedback module, for generate beta pruning echo message according to the state of neighbours' Track Table, described in returning toDownstream router.
7. the device of described optimization multicast protocol as claimed in claim 6, is characterized in that described optimizationThe device of multicast protocol also comprises:
Handover module, for not adding state by the state of current upstream router from adding state to switch to.
8. the device of described optimization multicast protocol as claimed in claim 6, is characterized in that described optimizationThe device of multicast protocol also comprises:
Judge module, for judging source IP address and the object upper reaches field address of the described message that will returnWhether consistent, if address is consistent, beta pruning echo message is returned to described downstream router.
9. the device of described optimization multicast protocol as claimed in claim 6, is characterized in that described optimizationThe device of multicast protocol also comprises:
Overtime module, for overtime timer is set, treats that time-out time arrives, and returns to beta pruning echo message.
10. the device of the optimization multicast protocol as described in claim 6 to 9 any one, is characterized in that,The device of described optimization multicast protocol also comprises:
Add module, if for receive downstream router off-line member send join message after,Judge that described member reaches the standard grade, increase described member's relevant information to this neighbours' Track Table.
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| CN201410571429.6A CN105591942B (en) | 2014-10-23 | 2014-10-23 | Method and device for optimizing multicast protocol |
| PCT/CN2015/086234 WO2016062150A1 (en) | 2014-10-23 | 2015-08-06 | Multicast protocol optimization method and device |
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| CN201410571429.6A CN105591942B (en) | 2014-10-23 | 2014-10-23 | Method and device for optimizing multicast protocol |
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Cited By (1)
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| CN111600738A (en) * | 2020-03-30 | 2020-08-28 | 福建天泉教育科技有限公司 | Method for optimizing timeout processing and storage medium |
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| WO2016062150A1 (en) | 2016-04-28 |
| CN105591942B (en) | 2019-12-17 |
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