CN101051983A - Construction method for reliable RPR circular net and relative RPR station device - Google Patents
Construction method for reliable RPR circular net and relative RPR station device Download PDFInfo
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- CN101051983A CN101051983A CNA2007100974742A CN200710097474A CN101051983A CN 101051983 A CN101051983 A CN 101051983A CN A2007100974742 A CNA2007100974742 A CN A2007100974742A CN 200710097474 A CN200710097474 A CN 200710097474A CN 101051983 A CN101051983 A CN 101051983A
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Abstract
The method comprises: setting n (n larger than 2) RPR logical ports on each site in RPR ring network, which are used for respectively accessing n RPR logical rings being independently each other; balancing the traffic load on n RPR logical ports by making the link aggregation for n RPR logical ports on said each site, and making link switch when said any PRP logical port on said any site failures. The invention also reveals an apparatus used for creating RPR ring network and RPR sites, which comprises n RPR logical ports and a link aggregation unit.
Description
Technical field
The present invention relates to metropolitan area network, relate in particular to RPR (Resilient Packet Ring, the Resilient Packet Ring) networking technology in the metropolitan area network.More particularly, the present invention relates to a kind of construction method of reliable RPR looped network, and the relevant RPR site apparatus that is used to set up described reliable RPR looped network.
Background technology
RPR (Resilient Packet Ring, Resilient Packet Ring) technology collection IP (Internet Protocol, Internet protocol) economy of the intellectuality of net, Ethernet, the high bandwidth efficiency that reaches optical fiber ring network and reliability are in one, for broadband IP metropolitan area network operator provides a flexible and efficient networking plan.The RPR technology makes operator provide the carrier-class service to become possibility with low cost in metropolitan area network, has reduced transmission cost when similar SDH (Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)) level network reliability is provided.RPR is different from traditional MAC (MediaAccess Control, media interviews control) the most attracting characteristics are that it has the carrier-class reliability, thereby make it not only be confined to handle data-oriented professional transmission demand, can form simultaneously and handle the comprehensive transmission solution that multi-service transmits.
As shown in Figure 1, similar with the SDH topological structure, RPR is reciprocal dicyclo topological structure, and every section light path on the ring is operated on the same speed.Different is, the dicyclo of RPR can both transmit data, and two rings are hereinafter referred to as 0 ring (Ringlet0) 110 and 1 ring (Ringlet1) 120, and wherein the data transmission direction of 0 ring 110 be clockwise, and 1 to encircle 120 data transmission direction be counterclockwise.Each RPR website (station) 130 has all adopted the 48 bit mac addresses of using in the Ethernet as address designation, and therefore from RPR website 130 device link layers, the physics optical interface of these two pairs of transmitting-receivings is a link layer interface; And, also only need to distribute an interface IP address from network layer.The link section of being called (span) 140 between two adjacent R PR websites 130, a plurality of continuous sections 140 and the website on it 130 constitute territory (domain) 150.
With regard to each website 130, great changes have taken place for the packet switching construction of RPR and legacy packets switching fabric.As shown in Figure 2, the beltway in the similar city of packet switching construction of RPR, inner each station of loop can both lead directly to, and basically without traffic lights, efficient is very high.A RPR website has a MAC entity and two physical layer entity.Physical layer entity and link association.The MAC entity comprises a MAC controlled entity and two MAC service link entities, and is referred to as access point, and each access point is associated with each loop.Physical layer entity is divided into east orientation physical layer and western to physical layer according to the loop direction.Here east orientation or west are to being that to be in the RPR north side be benchmark to the agreement website." sending mouth " of east orientation physical layer links together by the MAC entity with " receiving port " of west to physical layer, constitutes 0 ring 110 of RPR; Equally, " receiving port " of east orientation physical layer links to each other with west " sending mouth " to physical layer, constitutes 1 ring 120 of RPR.
Website 130 cooperates with ring 110/120, adopts grouping ADM (Add/Drop Multiplexer, add-drop multiplexer) formula exchanges data, finishes various data manipulations.Master data operation commonly used includes:
Last ring (insert): website 130 equipment are inserted into the message that forwards from other interfaces the data flow of RPR ring 110/120;
Following ring (copy): website 130 equipment receive data from the data flow of RPR ring 110/120, give website 130 upper stratas and handle accordingly;
Cross ring (transit): will continue to be forwarded to next website 130 by way of the data flow of this website 130; The ring of crossing is here operated, and is similar with the processing mode of SDH ADM equipment, and promptly crossing loop data stream does not need the equipment upper strata to handle, thereby improved the handling property of equipment greatly;
Reject (strip): make by way of the data of this website 130 and no longer down transmit.
The ADM formula switching architecture of this packet is easy to support various high-speed link interfaces.For clean culture, multicast, broadcast traffic, each website 130 adopts these master data operations and combination thereof to be achieved respectively.Such as, Fig. 3 and Fig. 4 have provided the realization schematic diagram of clean culture and broadcasting among the RPR respectively.
As shown in Figure 3, at the place, Source Site, ring Op1 operation in the employing makes in Data-carrying to 0 ring or 1 ring.The purpose website is carried out ring Op2 and data rejecting Op4 operation under the data.And intermediate stations is only carried out data and is crossed ring Op3 operation.It should be noted that for unicast traffic the mode that RPR takes the purpose website to peel off is peeled off mode with the Source Site that traditional looped network technology adopts and compared, it can effectively improve bandwidth availability ratio, thereby makes that the space reuse technology of bandwidth is more efficient.
Because there are a plurality of purpose websites in multicast, broadcast traffic, the data transfer mechanism and the clean culture of the corresponding employing of RPR are different.As shown in Figure 4, each RPR website is all carried out ring Op2 operation under the data in the 0 ring broadcasting, and carries out data and reject the Op4 operation when these data are got back to the Source Site.Other RPR broadcast mode also comprises 1 ring broadcasting, dicyclo broadcast (sites) in turn etc., and data manipulation type and Fig. 4 of required execution are similar, do not repeat them here.
The RPR logic interface is positioned on the veneer mostly, makes that will to cause all users of extension under this RPR logic interface when the veneer at RPR logic interface place breaks down out of touch with it, also promptly causes corresponding RPR looped network Single Point of Faliure to occur.Therefore, generally adopt at present two plate positions of RPR as shown in Figure 5 to strengthen the reliability of RPR looped network.
As shown in Figure 5, when the whole net fault that adopts the two plate positions of RPR to strengthen the RPR looped network reliability, prevents that single board default from causing, its RPR agreement will be made distributed striding two veneers, thereby the complexity that makes respective protocol realize is very high.Simultaneously, by the interconnection of a pairing (mate) interface,, thereby will increase the unreliability of corresponding RPR looped network between two RPR veneers owing to pairing interface itself may break down.In addition, for system shown in Figure 5,, thereby make the difficult stable systematic function that ensures because systematic function depends on the perception to single board default.
Summary of the invention
In view of this, the object of the invention is to provide a kind of RPR (Resilient Packet Ring, Resilient Packet Ring) the looped network construction method, makes that setting up the described RPR looped network that forms can effectively avoid Single Point of Faliure.
Simultaneously, another purpose of the present invention is to provide a kind of RPR site apparatus that is used to set up the RPR looped network, and it can set up out the RPR looped network with reliability by using said method.
In order to achieve the above object, the invention provides a kind of RPR looped network construction method, mainly include: n RPR logic interface of configuration on each website in described RPR looped network, wherein n is the integer more than or equal to 2; The described RPR logic interface of on each described website each inserts the RPR logic box that an independent operating has the RPR agreement respectively, makes that coexistence has n separate RPR logic box in the described RPR looped network; The described n of a link aggregation RPR logic box is to carry out load balancing and to carry out link switchover when arbitrary described RPR logic interface breaks down on arbitrary described website to the flow on each described website.
For above-mentioned RPR looped network construction method, wherein, described link aggregation preferably is specially: n RPR logic interface all using on each described website on each described website of link aggregation protocols difference link aggregation makes described n separate RPR logic box bind an aggregation group in logic.
For above-mentioned RPR looped network construction method, in general, described link aggregation protocols is specially IEEE802.3 link aggregation protocols (IEEE802.3ad); Simultaneously, described link aggregation protocols may be supported the load balancing of shuffling (hash) mode, also may support the load balancing of polling mode.
For above-mentioned RPR looped network construction method, wherein, described link switchover preferably is specially: for the website that described fault RPR logic interface occurs, it switches to other RPR logic interface on it by described link aggregation protocols with the flow of described fault RPR logic interface; And/or, for other website outside the website of the place of fault RPR logic interface described in the described RPR looped network, after it perceives the absence of described fault RPR logic interface, the flow of RPR logic interface corresponding with described fault RPR logic interface on it is switched to the corresponding RPR logic interface of other healthy RPR logic box on it by described link aggregation protocols.
In order to reach above-mentioned another purpose, the invention provides a kind of RPR site apparatus that is used to set up the RPR looped network, it includes: n RPR logic interface, be used for inserting the corresponding RPR logic box of described RPR looped network by independent operating RPR agreement, and wherein n is the integer more than or equal to 2; The link aggregation unit, link to each other respectively with described n RPR logic interface, be used for the described n of a link aggregation RPR logic interface, make n corresponding respectively separate RPR logic box of described n RPR logic interface bind an aggregation group in logic, described aggregation group can be shared the flow on the described RPR site apparatus jointly and carry out corresponding link when opening circuit appears in a certain RPR logic box and switch.
For the above-mentioned RPR site apparatus that is used to set up the RPR looped network, wherein, described link aggregation unit preferably further includes: the Link State detection module is used to detect the Link State of described n the n that the RPR logic interface inserts respectively RPR logic box; The link aggregation protocols module is used for carrying out load balancing and/or fault recovery link switchover according to the Link State that described Link State detection module is determined.
For the above-mentioned RPR site apparatus that is used to set up the RPR looped network, preferably, the corresponding RPR logic interface of described Link State detection module by checking this website on described n the RPR logic box whether on fault and described n the RPR logic box the corresponding RPR logic interface of other website whether absence determine whether fault of corresponding RPR logic box, make described link aggregation protocols module carrying out load balancing between the healthy RPR logic box and the flow on the fault RPR logic box is switched on other healthy RPR logic box.
For the above-mentioned RPR site apparatus that is used to set up the RPR looped network, further preferably, when described fault RPR logic box is that corresponding RPR logic interface owing to this website breaks down when being judged as fault, described link aggregation protocols module switches to other healthy RPR logic interface on this website with the flow of described fault RPR logic interface; Perhaps, when described fault RPR logic box is that described link aggregation protocols module switches to the flow of the RPR logic interface of the above fault RPR logic box correspondence of this website the RPR logic interface of other healthy RPR logic box correspondence on this website when being judged as fault owing to the corresponding RPR logic interface appearance of other website is absent.
For the above-mentioned RPR site apparatus that is used to set up the RPR looped network, in general, described link aggregation protocols module can be carried out the operation of load balancing on the described RPR site apparatus and/or fault recovery link switchover by operation IEEE802.3 link aggregation protocols (IEEE802.3ad).And, when described n RPR logic interface lays respectively at the different groove position of n, the actual execution of described link aggregation protocols module be the straddle link aggregation, and described straddle link aggregation also can be realized by moving described IEEE802.3ad link aggregation protocols.
For the above-mentioned RPR site apparatus that is used to set up the RPR looped network, generally speaking, each described RPR logic interface includes two physical interfaces, is respectively applied for physics 0 ring and 1 ring that insert in the described RPR logic box corresponding with described RPR logic interface.
By above-mentioned introduction as can be known, technical solution of the present invention mainly has following beneficial effect:
At first, carry out load balancing and Single Point of Faliure protection by a plurality of different RPR logic interfaces on the same RPR site apparatus of link aggregation, the present invention efficiently solves Single Point of Faliure problem in the RPR looped network.Particularly, when a certain RPR logic interface breaks down, can the flow on the corresponding RPR logic box be switched on other RPR logic box in the same aggregation group by link aggregation mechanism, and switch speed reaches the Millisecond of units soon.
Secondly, by the overlapping application of link aggregation and RPR dicyclo technology, the present invention has effectively increased the transmission bandwidth of corresponding RPR looped network.
In addition, compare with the scheme that the two plate positions of available technology adopting RPR need the distributed RPR agreement to realize, the present invention has effectively simplified the agreement that networking has high reliability RPR looped network and has realized.This be because, in technical solution of the present invention, be positioned at each each self-operating of RPR logic box RPR agreement separately of same aggregation group, calculate independence each other and need not the interaction protocol incident.
Description of drawings
Fig. 1 is the topology diagram of RPR in the prior art;
Fig. 2 is the packet switching construction schematic diagram of RPR in the prior art;
Fig. 3 is the realization schematic diagram of RPR looped network clean culture in the prior art;
Fig. 4 is the realization schematic diagram of RPR looped network broadcasting in the prior art;
Fig. 5 is the schematic diagram of the two plate positions of available technology adopting RPR;
Fig. 6 is the structural representation of RPR logic interface in the prior art;
The structural representation of RPR logic interface when Fig. 7 is the invention process link aggregation;
Fig. 8 is for using the RPR ring network structure schematic diagram that RPR looped network construction method of the present invention is realized;
Fig. 9 is the structural representation of RPR site apparatus of the present invention.
Embodiment
Based on the consideration of specification description and easy-to-read, it is as follows to define the term that occurs in the patent application document of the present invention one by one:
RPR (Resilient Packet Ring, Resilient Packet Ring) looped network, for having the network of reciprocal dicyclo topological structure, a RPR looped network comprises two RPR websites at least.
The RPR logic box be the complete dicyclo annular data transmission link in the RPR looped network, and so-called dicyclo specifically includes physics 1 ring that is used for transmitting physics 0 ring of data clockwise and is used for transmitting counterclockwise data.
The RPR logic interface is for being used to insert the logic interfacing of RPR logic box on the RPR website; And corresponding with the twin nuclei of RPR logic box, a RPR logic interface specifically includes two physical interfaces, is respectively applied for to insert corresponding physics 0 ring and physics 1 ring.
Need to prove that above-mentioned each term is only as censuring one of its title that means, therefore allly mean the title identical or approximate all because of being considered as its equivalent with it.
Continue, main design of the present invention is to solve the Single Point of Faliure problem that the RPR logic interface breaks down and causes on certain RPR site apparatus in the RPR looped network by toward the technical stack application link of RPR polymerization technique.Like this, understand the present invention better, below at first by introducing the institutional framework of RPR logic interface in the prior art, to prove the feasibility of overlapping application RPR and link aggregation technology for helping the reader.
Current RPR logic interface generally adopts FPGA (Field Programmable Gate Array, field programmable gate array) adds ETH (Ethernet, Ethernet) MAC (Media AccessControl, media interviews control) realize, and Fig. 6 has provided the structural representation of RPR logic interface in this implementation.
As shown in Figure 6, RPR adapter (Adaptor) 613 in the RPR logic interface 610 converts the RPR frame to ethernet frame, described subsequently ethernet frame is via XAUI (10Gigabit EthernetAttachment Unit Interface, 10 Gigabit Ethernet Attachment Unit Interface) 614 enters PP (the Packet Processor that is exclusively used in the processing message in the switch, packet handler) 615, and open normal ether forwarding process at this point.
As can be seen from Figure 6, a RPR logic interface 610 is corresponding to an ether physical interface.Simultaneously, current ether physical interface is all supported link aggregation, and described link aggregation is embodied as the straddle link aggregation that meets IEEE802.3 link aggregation protocols (IEEE802.3ad) standard usually.Like this,, described a plurality of different RPR logic interfaces can be aggregated into an aggregation group by the corresponding respectively ether physical interface of a plurality of different RPR logic interfaces of link aggregation, and the structural representation of Fig. 7 corresponding RPR logic interface when having provided this link aggregation of concrete enforcement.
As shown in Figure 7, follow IEEE802.3ad link aggregation protocols standard, XAUI 714#1 among link aggregation the one RPR logic interface 710#1 and the XAUI714#2 among the 2nd RPR logic interface 710#2 will make described two different RPR logic interfaces (comprising 710#1 and 710#2) can carry out load balancing because of binding an aggregation group in logic.Thereby make, when arbitrary RPR logic interface (710#1 or 710#2) wherein when breaking down, the flow on the fault RPR logic interface (710#1 or 710#2) can be switched to other healthy RPR logic interface (710#2 or 710#1) in the same aggregation group by described link aggregation mechanism.
And those skilled in the art can learn that by reading IEEE802.3ad link aggregation protocols standard the speed of described switching is at the Millisecond of units.That is to say that the enforcement of stack link aggregation mechanism makes described RPR looped network to solve the Single Point of Faliure problem by quick link switching on the RPR looped network.
Need to prove, though Fig. 7 has only provided the embodiment signal of two different RPR logic interfaces of link aggregation; But those skilled in the art's junction link polymerization technique present situation should be able to be known, and link aggregation can be supported plural interface polymerization at present.
Understood can overlapping application RPR and the basis of link aggregation technology on, will introduce RPR looped network construction method provided by the present invention below in detail.
As previously mentioned, described RPR looped network construction method mainly includes: dispose the individual RPR logic interface of n (n 〉=2) on each website in described RPR looped network, and described n RPR logic interface may be positioned at m (the individual different groove position of 1≤m≤n); The described RPR logic interface of on each described website each inserts the RPR logic box that an independent operating has the RPR agreement respectively, makes that coexistence has n separate RPR logic box in the described RPR looped network; The described n of a link aggregation RPR logic box is to carry out load balancing and to carry out link switchover when arbitrary described RPR logic interface breaks down on arbitrary described website to the flow on each described website.
Wherein, described link aggregation preferably is specially: n RPR logic interface all using on each described website on each described website of link aggregation protocols difference link aggregation makes described n separate RPR logic box bind an aggregation group in logic.Generally speaking, described link aggregation protocols is specially the IEEE802.3ad link aggregation protocols.Simultaneously, described link aggregation protocols may be embodied as the load balancing of supporting shuffling (hash) mode, also may be embodied as the load balancing of supporting polling mode.And when described n RPR logic interface was positioned at m different slots position, described link aggregation was embodied in the straddle link aggregation.
Wherein, described link switchover preferably is specially: when arbitrary described RPR logic interface breaks down on arbitrary described website, for fault RPR logic interface place website, can the flow (being mainly circulation) of described fault RPR logic interface be switched to other healthy RPR logic interface on this website rapidly by described link aggregation protocols; For other website outside the website of described fault RPR logic interface place, it, then can switch to rapidly on the RPR logic interface that other healthy RPR logic box is corresponding on this website by the flow (mainly comprise circulation and cross circulation) of described link aggregation protocols with RPR logic interface corresponding with described fault RPR logic interface on this website after the absence of described fault RPR logic interface by operation RPR protocol aware thereon.In a word, to carry out the purpose of link switchover be that the flow on the fault RPR logic interface is switched to other healthy RPR logic interface on this website to fault RPR logic interface place website; And other website to carry out the purpose of link switchover be that the flow that will belong to fault RPR logic box (the RPR logic box corresponding with described fault RPR logic interface) on it switches on other healthy RPR logic box in the same aggregation group.
Fig. 8 has provided and has used the RPR ring network structure signal that RPR looped network construction method provided by the present invention is realized.Need to prove, consider easily, in Fig. 8, only show two websites of described RPR looped network 800 based on drawing; Right its not intention the present invention only limit to implement to comprise the RPR looped network of 2 websites, the RPR looped network that in fact comprises 2 above websites can be used above-mentioned principle and technological means fully, analogize realization with reference to embodiment illustrated in fig. 8.
As shown in Figure 8, dispose the individual different RPR logic interface 811#11～811#1n of n (n 〉=2) on the one RPR website 810#1, this n RPR logic interface 811#11～811#1n inserts n separate RPR logic box 820#1～820#n respectively, and in general RPR logic interface 811 inserts and can only insert a RPR logic box 820; Similarly, also dispose n different RPR logic interface 811#21～811#2n on the 2nd RPR website 810#2, this n RPR logic interface 811#21～811#2n also inserts n separate RPR logic box 820#1～820#n respectively.So, finally realized a RPR looped network 800 with redundant reciprocal twin nuclei, wherein n separate RPR logic box 820#1～820#n can bind an aggregation group by link aggregation, to carry out the protection of load balancing and single-point link failure.
In order further to show the various technical characterictics and the beneficial effect of RPR looped network construction method provided by the present invention, to distinguish no RPR logic interface fault and two kinds of situations that RPR logic interface fault is arranged below, with reference to Fig. 8 the practical application situation of the RPR looped network of enforcement the present invention realization will be elaborated respectively.
When the equal healthy fault-free of the last arbitrary RPR logic interface 811#11～811#1n of arbitrary website 810#1～810#2 in the described RPR looped network 800,811#21～811#2n, because the RPR agreement on n RPR logic box 820#1～820#n is independent operating separately, thereby make: except needing to select corresponding RPR logic box to carry out the load balancing according to link aggregation protocols in last loop data operating process, the most of data manipulation on this n RPR logic box 820#1～820#n is independent of each other and has all followed and has general RPR consensus standard now.Distinguish the data manipulation type, particularly:
1), go up the loop data operation: when having the ring message on a certain website (such as 810#1) in the RPR looped network 800, website 810#1 is at first according to carrying out load balancing between n the RPR logic box 820#1～820#n of link aggregation protocols in the same aggregation group of coexistence; Subsequently, selected be used for sharing described message RPR logic box (such as 820#1) afterwards, described message is sent to the RPR logic interface 811#11 of RPR logic box 820#1 correspondence; Then, carry out ring operation down normally in the existing RPR technology, after also promptly the 0 ring/physics 1 of the physics in selected described RPR logic box 820#1 encircles, described message is inserted in the data flow of respective physical 0 ring/physics 1 ring.
2) reject data manipulation: when the message in the RPR looped network 800 is forwarded in the RPR looped network 800 a certain website (such as 810#2) when going up corresponding RPR logic interface 811#2n via a certain RPR logic box (such as 820#n), website 810#2 at first judges described message according to the RPR agreement, and whether needs are disallowable, be then to carry out normal rejecting operation in the existing RPR technology, also promptly directly abandon described message, make it no longer continue forwarding on RPR logic box 820#n.
3) down loop data operation: when the message in the RPR looped network 800 is forwarded in the RPR looped network 800 a certain website (such as 810#2) when going up corresponding RPR logic interface 811#2n via a certain RPR logic box (such as 820#n), website 810#2 at first judges described message according to the RPR agreement, and whether needs are disallowable; If do not need disallowablely, then continue to judge according to the RPR agreement whether the destination address of described message is identical with this site address; If identical, then carry out normal ring operation down in the existing RPR technology, also be about to described message and after RPR logic box 820#n peels off, carry out normal two layers of forwarding.
4) cross the loop data operation: when the message in the RPR looped network 800 is forwarded in the RPR looped network 800 a certain website (such as 810#2) when going up corresponding RPR logic interface 811#2n via a certain RPR logic box (such as 820#n), website 810#2 at first judges described message according to the RPR agreement, and whether needs are disallowable; If do not need disallowablely, then continue to judge according to the RPR agreement whether the destination address of described message is identical with this site address; If different, then normal the mistake encircled operation in the existing RPR technology of execution, also promptly exports described message to continue its forwarding on RPR logic box 820#n.
Read above-mentioned process operation data detailed annotation, those skilled in the art will be understood that the overlapping application of the present invention by link aggregation and RPR technology, have effectively enlarged the data transfer bandwidth (being increased to n from 1) of corresponding RPR looped network.
A certain website (such as 810#1) is gone up a certain RPR logic interface (such as 811#11) when breaking down in described RPR looped network 800, because n RPR logic box 820#1～820#n is bound in logic by link aggregation mechanism to be an aggregation group, thereby makes the flow on fault RPR logic interface 811#11 and/or the corresponding RPR logic box 820#1 can switch to rapidly on one of other healthy RPR logic interface 811#12～811#1n and/or other the healthy RPR logic box 820#2～820#n.Distinguish fault RPR logic interface 811#11 place website 810#1 and other website 810#2, particularly:
1) for fault RPR logic interface 811#11 place website 810#1, after finding fault, it switches to other healthy RPR logic interface 811#12～811#1n on this website by link aggregation mechanism rapidly with the flow on the RPR logic interface 811#11 (being mainly circulation) immediately.
2) for other website 810#2, after the absence that perceives RPR logic interface 811#11 on the corresponding RPR logic box 820#1, it switches to the message on the corresponding RPR logic box 820#1 of this website place rapidly on other normal RPR logic box 820#2～830#n of this website access by link aggregation mechanism immediately, also is about to the flow on the corresponding RPR logic interface 811#21 on this website (mainly comprise circulation and cross circulation) and switches to other RPR logic interface 811#22～811#2n on this website.
Like this; the present invention by ingenious in conjunction with the RPR agreement the quick perception of website fault and link aggregation mechanism in the protectiveness link switchover of Millisecond combine; make corresponding RPR looped network from certain RPR logic interface fault, to recover rapidly, thereby effectively improved the robustness of described RPR looped network.
In addition, the present invention also provides a kind of RPR site apparatus that is used to set up the RPR looped network, to support the enforcement of above-mentioned RPR looped network construction method.
Fig. 9 has provided the structural representation of described RPR site apparatus.About Fig. 9,2 points are described: 1, in Fig. 9, show two described RPR site apparatus 900#1 and 900#2 altogether earlier, both structures are identical, only be plotted in simultaneously among Fig. 9 in order to help the application of the described RPR site apparatus 900 of reader understanding, and be not to be used to limit that described RPR site apparatus 900 is inevitable occurs in pairs; 2, consider easily that based on drawing each RPR site apparatus 900 all only is illustrated as and comprises two RPR logic interfaces 910 in Fig. 9; But its not intention RPR site apparatus provided by the present invention comprise and only comprise two RPR logic interfaces, in fact those skilled in the art can implement to comprise the RPR site apparatus of the individual RPR logic interface of n (n 〉=2) fully according to disclosed principle and technological means.
With a RPR site apparatus 900#1 among Fig. 9 is that example makes an explanation.As shown in Figure 9, the RPR site apparatus 900#1 that is used to set up the RPR looped network provided by the present invention comprises: two RPR logic interface 910#11,910#12 are respectively applied for by independent operating RPR agreement and insert corresponding RPR logic box 1000#1,1000#2 in the RPR looped network; Link aggregation unit 920#1, link to each other with RPR logic interface 910#11,910#12 simultaneously, be used for link aggregation these two RPR logic interface 910#11,910#12, making corresponding two independent RPR logic box 1000#1,1000#2 bound in logic is an aggregation group.
Wherein, link aggregation unit 920#1 preferably further includes: Link State detection module 922#1,910#11～910#12 links to each other with the RPR logic interface, is used to detect the Link State of RPR logic box 1000#1～1000#2 that RPR logic interface 910#11～910#12 inserts respectively; Link aggregation protocols module 921#1, link to each other with Link State detection module 922#1 and RPR logic interface 910#11～910#12, be used between RPR logic interface 910#11～910#12, carrying out load balancing and/or fault recovery link switchover according to the Link State that Link State detection module 922#1 determines.
More specifically, the corresponding RPR logic interface 910#11～910#12 of Link State detection module 922#1 by checking last this website of RPR logic box 1000#1～1000#2 whether fault and n last other website of RPR logic box 1000#1～1000#2 900#2 corresponding RPR logic interface 910#21～910#22 whether absence determine whether fault of corresponding RPR logic box 1000#1～1000#2.Thereby make, link aggregation protocols module 921#1 can carry out load balancing between the healthy RPR logic box and with fault RPR logic box on flow switch on other healthy RPR logic box.
And, when fault RPR logic box (being assumed to 1000#1) is that corresponding RPR logic interface (being assumed to 910#11) owing to this website 900#1 breaks down when being judged as fault, link aggregation protocols module 921#1 switches to other healthy RPR logic interface 910#12 on this website with the flow (being mainly circulation) of fault RPR logic interface 910#11.
Yet, when fault RPR logic box (being assumed to 1000#1) is that link aggregation protocols module 921#1 (mainly comprise circulation and cross circulation) switches to the flow of the RPR logic interface 910#11 of fault RPR logic box 1000#1 correspondence on this website the RPR logic interface 910#12 of other healthy RPR logic box 1000#2 correspondence on this website when being judged as fault owing to corresponding RPR logic interface (the being assumed to 910#21) appearance of other website 900#2 is absent.
In general, link aggregation protocols module 921#1 can carry out the load balancing on this site apparatus 900#1 and/or the operation of fault recovery link switchover by operation IEEE802.3ad link aggregation protocols.In addition, generally, each described RPR logic interface 910#11～910#12 comprises two physical interfaces respectively, is respectively applied for physics 0 ring and 1 ring that insert among corresponding RPR logic box 1000#1～1000#2.
1. represent Link State detection module 922 in this site apparatus 900 to the Link State testing result that link aggregation protocols module 921 sends among Fig. 9, make link aggregation protocols module 921 to determine whether trigger link is switched to recover rapidly from Single Point of Faliure according to described Link State result; 2. represent that link aggregation protocols module 921 carries out the RPR logic interface 910 selection information that load balancing is determined each other by each RPR logic interface 910 on this site apparatus 900, and described load balancing meets IEEE802.3ad link aggregation protocols standard; 3. represent Link State detection module 922 fault message that each RPR logic interface 910 obtains from this site apparatus 900, and described fault message comprises whether our station point RPR logic interface breaks down and the whether absence of the corresponding RPR logic interface of other website.
What need statement is that foregoing invention content and embodiment are intended to the principle and the application of illustration technical scheme provided by the present invention, should not be construed as the qualification to protection range of the present invention.Those skilled in the art are within spirit of the present invention and principle, when doing various modifications, being equal to and replacing or improve.Protection scope of the present invention is as the criterion with defining of appended claims.
Claims (10)
1. a RPR looped network construction method is characterized in that, includes:
N RPR logic interface of configuration on each website in described RPR looped network, wherein n is the integer more than or equal to 2;
The described RPR logic interface of on each described website each inserts the RPR logic box that an independent operating has the RPR agreement respectively, makes that coexistence has n separate RPR logic box in the described RPR looped network;
The described n of a link aggregation RPR logic box is to carry out load balancing and to carry out link switchover when arbitrary described RPR logic interface breaks down on arbitrary described website to the flow on each described website.
2. RPR looped network construction method as claimed in claim 1, it is characterized in that, described link aggregation is specially: n RPR logic interface all using on each described website on each described website of link aggregation protocols difference link aggregation makes described n separate RPR logic box bind an aggregation group in logic.
3. RPR looped network construction method as claimed in claim 2 is characterized in that described link switchover is specially:
For the website that described fault RPR logic interface occurs, it switches to other RPR logic interface on it by described link aggregation protocols with the flow of described fault RPR logic interface;
And/or, for other website in the described RPR looped network, after it perceives the absence of described fault RPR logic interface, the flow of RPR logic interface corresponding with described fault RPR logic interface on it is switched to the corresponding RPR logic interface of other healthy RPR logic box on it by described link aggregation protocols.
4. as claim 2 or 3 described RPR looped network construction methods, it is characterized in that described link aggregation protocols is specially the IEEE802.3ad link aggregation protocols.
5. as claim 2 or 3 described RPR looped network construction methods, it is characterized in that described link aggregation protocols is supported the load balancing of shuffling mode, the perhaps load balancing of polling mode.
6. a RPR site apparatus that is used to set up the RPR looped network comprises the RPR logic interface that inserts corresponding RPR logic box in the described RPR looped network by operation RPR agreement; It is characterized in that:
The quantity of described RPR logic interface is n, and wherein n is the integer more than or equal to 2;
Described RPR site apparatus also includes the link aggregation unit, and it links to each other with described RPR logic interface, is used for the described RPR logic interface of link aggregation.
7. RPR site apparatus as claimed in claim 6 is characterized in that, described link aggregation unit specifically includes:
The Link State detection module is used to detect the Link State of described n the n that the RPR logic interface inserts respectively RPR logic box;
The link aggregation protocols module is used for carrying out load balancing and/or fault recovery link switchover according to the Link State that described Link State detection module is determined.
8. RPR site apparatus as claimed in claim 7, it is characterized in that, the corresponding RPR logic interface of described Link State detection module by checking this website on described n the RPR logic box whether on fault and described n the RPR logic box the corresponding RPR logic interface of other website whether absence determine whether fault of corresponding RPR logic box, make described link aggregation protocols module carrying out load balancing between the healthy RPR logic box and the flow on the fault RPR logic box is switched on other healthy RPR logic box.
9. RPR site apparatus as claimed in claim 8 is characterized in that, described link aggregation protocols module switches to the flow on the fault RPR logic box on other healthy RPR logic box and specifically includes:
When described fault RPR logic box is that corresponding RPR logic interface owing to this website breaks down when being judged as fault, described link aggregation protocols module switches to other healthy RPR logic interface on this website with the flow of described fault RPR logic interface; Perhaps,
When described fault RPR logic box is that described link aggregation protocols module switches to the flow of the RPR logic interface of the above fault RPR logic box correspondence of this website the RPR logic interface of other healthy RPR logic box correspondence on this website when being judged as fault owing to the corresponding RPR logic interface appearance of other website is absent.
10. as the arbitrary described RPR site apparatus of claim 7 to 9, it is characterized in that described link aggregation protocols module is carried out load balancing and/or fault recovery link switchover on the described RPR site apparatus by operation IEEE802.3ad link aggregation protocols.
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| CNA2007100974742A CN101051983A (en) | 2007-05-11 | 2007-05-11 | Construction method for reliable RPR circular net and relative RPR station device |
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| CNA2007100974742A CN101051983A (en) | 2007-05-11 | 2007-05-11 | Construction method for reliable RPR circular net and relative RPR station device |
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| CNA2007100974742A Pending CN101051983A (en) | 2007-05-11 | 2007-05-11 | Construction method for reliable RPR circular net and relative RPR station device |
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