CN101212395A - Monocast and multicast bandwidth control method and system in multi-protocol label switch network - Google Patents
Monocast and multicast bandwidth control method and system in multi-protocol label switch network Download PDFInfo
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Abstract
The invention discloses a method for controlling a unicast and a multicast bandwidth used in a multiprotocol label switching network and a system thereof. When a label transmitting path is built, the parameters of a unicast bandwidth and a parameter of the multicast bandwidth are respectively set; According to the unicast bandwidth parameter, the unicast business carries out a rate limitation; According to the multicast bandwidth parameter, the multicast business also carries out a rate limitation. Through distinguishing the unicast business from the multicast business, different queues are respectively used for sending the business. The rate limitation and exporting flow quantity shaping are respectively carried out for realizing the self bandwidth controlling of the unicast business and the multicast business.
Description
Technical field
The present invention relates to the network service switching technology, relate in particular to a kind of clean culture and multicast bandwidth control method and system that is used for multi-protocol label switching network.
Background technology
MPLS (Multiprotocol Label Switching, multiprotocol label switching) technology is a kind of switching technology that combines the second layer and the 3rd layer, by introducing based on label switch system, Route Selection and data forwarding are separated, stipulate the path of a grouping by label by network, Ethernet, LDP (Label Distribution Protocol have been fully utilized, label distribution protocol)/RSVP (Resource reSerVation Protocol, RSVP), PWE3 technology such as (pseudo wire emulations of edge-to-edge).The MPLS network mainly provides MPLS VPN (Virtual Private Network, VPN) service, and provides professional QoS (Quality of Service, service quality) to guarantee.
MPLS VPN is a kind of IP-VPN based on the MPLS technology, it is the MPLS technology of on network route and switching equipment, using, simplify the Route Selection mode of core router, utilize IP virtual private network network (IPVPN) in conjunction with the label switched realization of traditional route technology.The MPLS network is made up of the backbone network of operator and each node of user, generally include backbone network core router P (Provider Router), being responsible for MPLS transmits, backbone network edge router PE (Provider Edge Router), be the main implementor of MPLS L3VPN, user network edge router CE (Custom Edge Router).The PE node is finished entering of packet and is withdrawed from process, and the P node provides high-speed switching capability in network.So-called VPN is exactly the IP network of a logic isolation in the MPLS network, is the division to the MPLS set of network nodes, the just corresponding set of being made up of some nodes of VPN.
The MPLS forwarding mechanism is the allocation of packets label (Label) that enters in the MPLS network, and the various packets that will enter network are the packet definitions with identical characteristics forwarding equivalence class (Forwarding EquivalenceClass by special abstract method, FEC), simply, FEC has defined one group along same paths, the packet of same process is arranged, it is mapped to same label, represent this FEC with this label.When the MPLS network is set up FEC, between the MPLS network node, set up label forwarding path LSP (Label Switched Path) for FEC by agreements such as MPLS control signaling LDP, RSVP-TE.LSP is a unidirectional tunnel that runs through network, connects 2 or a plurality of network node, by the label swap operation, realizes the forwarding of packet on node.
During from the network edge node access service,, send to unique destination node by this LSP if unicast service can select the LSP that can reach this node as bearer path according to the destination node of message self identification so.If multicast service (comprising broadcasting and multicast) then needs message is all duplicated and send portion to a plurality of destination nodes.For multicast, need send to the multicast domain member; For broadcasting, need send to all member node of the broadcast domain of the affiliated VPN of packet, so these two kinds of service needed send a same messages by many LSP that connect destination node.Multicast and unicast example are as shown in Figure 1 in MPLS network and the VPN.
When setting up label switched path, need specify parameters such as relevant source node, destination node and bandwidth, usually the bandwidth here is meant the flow of the unicast service that can transmit at most on this paths, fully at unicast service, the bandwidth summation of configurable all transmission paths equals the unicast transmission ability of this equipment on node.The bandwidth is not here considered the factor of multicast, this may cause problem: professional can the transmission by many LSP when multicast takes place, but owing to be not unicast service, so system can not deduct it from pre-assigned LSP unicast bandwidth, causes system resource to be taken for no reason.
At present, in the MPLS switching equipment, only considered the factor of clean culture for the common way of the allocated bandwidth of LSP, and the multicast allocated bandwidth to be multicast by VPN suppress mechanism realizes, promptly can unify to limit the total flow of the all-multicast business of generation among the VPN.But this way can not accurately be controlled the flow that appears at the multicast service on each bar LSP, and the flow control parameter (bandwidth) that multicast suppresses parameter and LSP does not have related, be that multicast service can not be deducted bandwidth when rate limit from corresponding LSP, multicast service has taken the extra bandwidth of system.Owing to the existence of multicast service, cause the actual system bandwidth (scheduling resource) that takies of uncontrollable LSP.For the such application example of video request program, multicast service is very big to the consumption of resource, is necessary that the bandwidth that realizes multicast service accurately controls.
Therefore, need a kind of technical scheme, can control clean culture and multicast service service bandwidth separately.
Summary of the invention
Main purpose of the present invention is to provide a kind of clean culture and multicast bandwidth control method and system that is used for multi-protocol label switching network, be used to guarantee multicast and clean culture service bandwidth separately, solve the uncontrolled problem of seizing the system call bandwidth resources of multicast service in the MPLS network environment.
To achieve these goals, according to a first aspect of the invention, the invention provides a kind of clean culture and multicast bandwidth control method that is used for multi-protocol label switching network.This band width control method may further comprise the steps:
When setting up label forwarding path, unicast bandwidth parameter and multicast bandwidth parameter are set respectively;
According to the unicast bandwidth parameter, unicast service is carried out rate limit; And
According to the multicast bandwidth parameter, multicast service is carried out rate limit.
Preferably, at unicast service and multicast service, use different formations to send business respectively.On the outbound port of the switching equipment of label forwarding path correspondence, distribute two formations, be used for being responsible for respectively unicast service and multicast service are exported scheduling.
Alternatively, the unicast rate limiting parameter is set, and assurance bandwidth in the unicast rate limiting parameter and peak bandwidth are configured to respectively in the clean culture leakage bucket parameter region, be used for unicast service is carried out rate limit according to the unicast bandwidth parameter.
Alternatively, the traffic shaping parameter of the employed formation of multicast service is set, is used for multicast service is carried out rate limit according to the multicast bandwidth parameter.
To achieve these goals, according to a second aspect of the invention, the invention provides a kind of clean culture and multicast bandwidth control system that is used for multi-protocol label switching network.This bandwidth control system comprises: module is set, is used for when setting up label forwarding path, unicast bandwidth parameter and multicast bandwidth parameter are set respectively; The unicast bandwidth control module is used for according to the unicast bandwidth parameter unicast service being carried out rate limit; And multicast bandwidth control module, be used for multicast service being carried out rate limit according to the multicast bandwidth parameter.
Preferably, at unicast service and multicast service, use different formations to send business respectively.On the outbound port of the switching equipment of label forwarding path correspondence, be assigned two formations, be used for being responsible for respectively unicast service and multicast service are exported scheduling.
Alternatively, the unicast bandwidth control module is provided with the unicast rate limiting parameter according to the unicast bandwidth parameter, and assurance bandwidth in the unicast rate limiting parameter and peak bandwidth are configured to respectively in the clean culture leakage bucket parameter region, is used for unicast service is carried out rate limit.
Alternatively, multicast bandwidth control module is provided with the traffic shaping parameter of the employed formation of multicast service according to the multicast bandwidth parameter, is used for multicast service is carried out rate limit.
By technique scheme, the present invention uses different formations to send business respectively by based on separating unicast and multicast service, carries out rate limit and rate of discharge shaping respectively to realize the bandwidth control separately of clean culture and multicast service.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is multicast and a clean culture schematic diagram in MPLS network and the VPN;
Fig. 2 is according to the clean culture of multi-protocol label switching network and the flow chart of multicast bandwidth control method of being used for of the present invention;
Fig. 3 is according to the clean culture of multi-protocol label switching network and the block diagram of multicast bandwidth control system of being used for of the present invention; And
Fig. 4 controls schematic diagram respectively according to clean culture and multicast service in the MPLS switching equipment of the embodiment of the invention.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail.
With reference to Fig. 2, clean culture and the multicast bandwidth control method that is used for multi-protocol label switching network according to the present invention may further comprise the steps:
When setting up label forwarding path, unicast bandwidth parameter and multicast bandwidth parameter are set respectively;
According to the unicast bandwidth parameter, unicast service is carried out rate limit; And
According to the multicast bandwidth parameter, multicast service is carried out rate limit.
Preferably, at unicast service and multicast service, use different formations to send business respectively.On the outbound port of the switching equipment of label forwarding path correspondence, distribute two formations, be used for being responsible for respectively unicast service and multicast service are exported scheduling.
Alternatively, the unicast rate limiting parameter is set, and assurance bandwidth in the unicast rate limiting parameter and peak bandwidth are configured to respectively in the clean culture leakage bucket parameter region, be used for unicast service is carried out rate limit according to the unicast bandwidth parameter.
Alternatively, the traffic shaping parameter of the employed formation of multicast service is set, is used for multicast service is carried out rate limit according to the multicast bandwidth parameter.
With reference to Fig. 3, clean culture and the multicast bandwidth control system 10 that is used for multi-protocol label switching network according to the present invention comprises: module 20 is set, is used for when setting up label forwarding path, unicast bandwidth parameter and multicast bandwidth parameter are set respectively; Unicast bandwidth control module 30 is used for according to the unicast bandwidth parameter unicast service being carried out rate limit; And multicast bandwidth control module 40, be used for multicast service being carried out rate limit according to the multicast bandwidth parameter.
Preferably, at unicast service and multicast service, use different formations to send business respectively.On the outbound port of the switching equipment of label forwarding path correspondence, be assigned two formations, be used for being responsible for respectively unicast service and multicast service are exported scheduling.
Alternatively, unicast bandwidth control module 30 is provided with the unicast rate limiting parameter according to the unicast bandwidth parameter, and assurance bandwidth in the unicast rate limiting parameter and peak bandwidth are configured to respectively in the clean culture leakage bucket parameter region, is used for unicast service is carried out rate limit.
Alternatively, multicast bandwidth control module 40 is provided with the traffic shaping parameter of the employed formation of multicast service according to the multicast bandwidth parameter, is used for multicast service is carried out rate limit.
The present invention relates to the network communications technology field, be specifically related to the method for control multicast service bandwidth in the MPLS network, can accurately control the multicast bandwidth and avoid too much taking for system resource.The step that realizes this method is as follows:
1) when setting up LSP, sets unicast bandwidth parameter and multicast bandwidth parameter respectively.
2) unicast service for LSP carries out rate limit according to the unicast bandwidth parameter.
3) multicast service for LSP carries out the rate of discharge shaping according to the multicast bandwidth parameter.
More than 3 steps formed the main contents of the inventive method, it is characterized in that: specify relevant clean culture and multicast bandwidth during configuration LSP, through identifying clean culture and the multicast service on the LSP behind the traffic classification, use diverse ways to carry out rate controlled respectively, thereby reach the purpose of accurate control clean culture and multicast bandwidth.
With reference to Fig. 4, specifically implement as follows:
1, carries out the LSP business configuration.
Dispose a LSP A, specify inbound port, outbound port, service priority, pseudo-line binding information, unicast bandwidth, relevant parameters such as multicast bandwidth.
2, be multicast and the unicast service configuration schedules formation respectively of LSP
For LSP A, on the outbound port of its corresponding switching equipment, distribute two formation QUEUE A and QUEUE B, be responsible for respectively unicast service and the multicast service of LSP A are exported scheduling.
3, carry out the configuration of LSP unicast service.
According to the unicast rate restriction of the unicast bandwidth parameter setting LSP A correspondence of LSP A, carry out traffic monitoring.Assurance bandwidth CIR in the unicast rate limiting parameter and peak bandwidth PIR are configured to respectively in the clean culture leakage bucket parameter region of LSP A use.Unicast service among the LSP A is carried out rate limit.
4, carry out the configuration of LSP multicast service.
Multicast bandwidth parameter according to LSP A is provided with the traffic shaping parameter that multicast service uses formation QUEUEB, and multicast service is carried out rate limit in outlet.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a clean culture and a multicast bandwidth control method that is used for multi-protocol label switching network is characterized in that, may further comprise the steps:
When setting up label forwarding path, unicast bandwidth parameter and multicast bandwidth parameter are set respectively;
According to described unicast bandwidth parameter, unicast service is carried out rate limit; And
According to described multicast bandwidth parameter, multicast service is carried out rate limit.
2. clean culture according to claim 1 and multicast bandwidth control method is characterized in that, at unicast service and multicast service, use different formations to send business respectively.
3. clean culture according to claim 2 and multicast bandwidth control method is characterized in that, distribute two formations on the outbound port of the switching equipment of described label forwarding path correspondence, are used for being responsible for respectively unicast service and multicast service are exported scheduling.
4. according to each described clean culture and multicast bandwidth control method in the claim 1 to 3, it is characterized in that, according to described unicast bandwidth parameter the unicast rate limiting parameter is set, and the assurance bandwidth in the described unicast rate limiting parameter and peak bandwidth are configured to clean culture respectively leak in the bucket parameter region, be used for unicast service is carried out rate limit.
5. according to each described clean culture and multicast bandwidth control method in the claim 1 to 3, it is characterized in that, the traffic shaping parameter of the employed formation of multicast service is set, be used for multicast service is carried out rate limit according to described multicast bandwidth parameter.
6. a clean culture and a multicast bandwidth control system that is used for multi-protocol label switching network is characterized in that, comprising:
Module is set, is used for when setting up label forwarding path, unicast bandwidth parameter and multicast bandwidth parameter are set respectively;
The unicast bandwidth control module is used for according to described unicast bandwidth parameter unicast service being carried out rate limit; And
Multicast bandwidth control module is used for according to described multicast bandwidth parameter multicast service being carried out rate limit.
7. clean culture according to claim 6 and multicast bandwidth control system is characterized in that, at unicast service and multicast service, use different formations to send business respectively.
8. clean culture according to claim 7 and multicast bandwidth control system is characterized in that, are assigned two formations on the outbound port of the switching equipment of described label forwarding path correspondence, are used for being responsible for respectively unicast service and multicast service are exported scheduling.
9. according to each described clean culture in the claim 6 to 8 and multicast bandwidth control system, it is characterized in that, described unicast bandwidth control module is provided with the unicast rate limiting parameter according to described unicast bandwidth parameter, and the assurance bandwidth in the described unicast rate limiting parameter and peak bandwidth are configured to clean culture respectively leak in the bucket parameter region, be used for unicast service is carried out rate limit.
10. according to each described clean culture in the claim 6 to 8 and multicast bandwidth control system, it is characterized in that, described multicast bandwidth control module is provided with the traffic shaping parameter of the employed formation of multicast service according to described multicast bandwidth parameter, is used for multicast service is carried out rate limit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841025A (en) * | 2012-11-22 | 2014-06-04 | 日立金属株式会社 | Communication system and network relay device |
| CN107786456A (en) * | 2016-08-26 | 2018-03-09 | 中兴通讯股份有限公司 | Flow control methods and system, packet switching equipment and user equipment |
| CN110519119A (en) * | 2019-07-31 | 2019-11-29 | 视联动力信息技术股份有限公司 | Bandwidth management method, device and storage medium based on view networking |
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- 2006-12-28 CN CNA200610156606XA patent/CN101212395A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103841025A (en) * | 2012-11-22 | 2014-06-04 | 日立金属株式会社 | Communication system and network relay device |
| CN107786456A (en) * | 2016-08-26 | 2018-03-09 | 中兴通讯股份有限公司 | Flow control methods and system, packet switching equipment and user equipment |
| CN107786456B (en) * | 2016-08-26 | 2019-11-26 | 南京中兴软件有限责任公司 | Flow control methods and system, packet switching equipment and user equipment |
| CN110519119A (en) * | 2019-07-31 | 2019-11-29 | 视联动力信息技术股份有限公司 | Bandwidth management method, device and storage medium based on view networking |
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