CN102821041B - Protection method and device of services - Google Patents

Protection method and device of services Download PDF

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Publication number
CN102821041B
CN102821041B CN201210251368.6A CN201210251368A CN102821041B CN 102821041 B CN102821041 B CN 102821041B CN 201210251368 A CN201210251368 A CN 201210251368A CN 102821041 B CN102821041 B CN 102821041B
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China
Prior art keywords
business
protection
protect types
qos requirement
availability
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CN201210251368.6A
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Chinese (zh)
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CN102821041A (en
Inventor
孔力
何磊
王光全
裴小燕
周晓霞
王海军
黄永亮
马季春
张红
刘琦
Original Assignee
中国联合网络通信集团有限公司
中讯邮电咨询设计院有限公司
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Priority to CN201210251368.6A priority Critical patent/CN102821041B/en
Publication of CN102821041A publication Critical patent/CN102821041A/en
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Publication of CN102821041B publication Critical patent/CN102821041B/en

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Abstract

The invention provides a protection method and a device of services. The method comprises the following steps: generating a protection combination of the services according to a QoS (quality of service) request and a reliability model of the services; and sending service protection combination messages including the protection combination of the services to nodes of each of sending paragraphs, so that each of the nodes can select corresponding service protection types according to the service protection combination messages so as to protect the services. According to the protection method and the device of the services provided by the embodiment, the qualification protection types corresponding to each sending paragraph can be pre-designed according to at least one or more indexes in the QoS request of the services at the starting point of transmission of the services so as to determine the protection combination of the services, namely, the qualification protection types corresponding to each of the sending paragraphs in a whole transmission path in the protection combination are adopted for each of the sending paragraphs in the process of sending the services, so that the services can meet the QoS request in the whole transmission path as far as possible.

Description

The guard method of business and device

Technical field

The present invention relates to data transmission technology, particularly relate to a kind of guard method and device of business.

Background technology

MPLS(Multi-Protocol Label Switching, multiprotocol label switching) be that a kind of communication network opening utilizes label to carry out the new technology of data high-speed, high efficiency of transmission.

In an mpls network, higher to the qos requirement of business.Affecting a lot of because have of QoS, mainly comprising the performance index such as time delay, shake, packet loss, bandwidth, business availability or break period, need to select suitable protect types to meet the qos requirement of business in the transmitting procedure of business.The protection classification of business can be divided into five types such as service protection, protecting tunnel, tunnel restoration, gateway protection and access link protection.Multiple concrete service protection type is comprised again in each service protection type.Such as, service protection directly provides protection in service layer, as L3VPN(Layer3 Virtual Private Network, third layer VPN (virtual private network)) the VPN FRR(Fast ReRoute of business, Quickly regroup) etc.; Protecting tunnel is that hierarchical service provides at LSP(Layered Service Provider) tunnel aspect provides protection, as LSP protection, TE FRR(Traffic Engineer Fast ReRoute, traffic engineering Quickly regroup) etc.; Tunnel restoration selects the mechanism of multiple protective route in LSP aspect by dynamic signaling; Gateway protection is the protection mechanism implemented at the gateway node be connected with service node, to prevent gateway node to lose efficacy, as VRRP(Virtua lRouter Redundancy Protocol, and Virtual Router Redundancy Protocol) protection etc.; Access link protection protects the link that network node is connected with service node; as the LAG(Link Aggregation Group adopted for ethernet link; link aggregation group), MC-LAG(Multichassis Link Aggregation Group, the link aggregation group of multimachine frame) protection etc.

In prior art; the whole transmission path of a business is divided into several transmission paragraph usually; the protect types of each transmission paragraph several business corresponding; when the node of each transmission paragraph starting point receives business, just according to the protect types of the same index Stochastic choice corresponding business in the qos requirement of business, business is protected.Due to the problem of reliability, each sends QoS index of paragraph is not superposition, and this likely causes business on this paragraph, only meet an index in this QoS, and does not meet this index on whole transmission path.

Summary of the invention

The invention provides a kind of guard method and device of business, to avoid when the protect types according to the index determination business in qos requirement, not meeting QoS index in whole transmission path.

The present invention first aspect provides a kind of guard method of business, comprising:

According to the qos requirement of business and the protection combination of Reliability Model generation business, the protection of described business is combined to comprise and is respectively sent service protection type corresponding to paragraph with the delivering path of described business;

Node to each transmission paragraph sends the service protection combined message of the protection combination comprising described business, selects corresponding service protection type to protect described business to make each node according to described service protection combined message.

Another aspect of the present invention provides a kind of protective device of business, comprising:

Generation module, for combining according to the qos requirement of business and the protection of Reliability Model generation business, the protection of described business is combined to comprise and is respectively sent service protection type corresponding to paragraph with the delivering path of described business;

Sending module, for sending the service protection combined message of the protection combination comprising described business to the node of each transmission paragraph, selects corresponding service protection type to protect described business to make each node according to described service protection combined message.

As shown from the above technical solution; the guard method of business provided by the invention and device; qualified protect types corresponding to paragraph is sent according at least one index in the qos requirement of business or pre-designed each of many index by the starting point place of transmitting in business; thus determine the protection combination of this business; namely in the process sent in this business; each on whole transmission path sends the qualified protect types that paragraph takes to correspond in protection combination this paragraph, and this business can be made on whole transmission path all to meet qos requirement as far as possible.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of the guard method of business according to an embodiment of the invention;

Fig. 2 is the schematic diagram that the transmission path of a business according to an embodiment of the invention paragraphs;

Fig. 3 A is the structural representation of the protective device of business according to another embodiment of the present invention;

Fig. 3 B is the structural representation of the protective device of business according to yet another embodiment of the invention;

Fig. 4 is the structural representation of the protective device of business according to further embodiment of this invention.

Embodiment

Embodiment one

The present embodiment provides a kind of guard method of business, its network architecture that is suitable for be MPLS network of the prior art.The qos requirement of often kind of business may comprise multinomial QoS index; the guard method of the business of the present embodiment; a kind of multinomial QoS index of business is considered; and the difference in a path sends on paragraph and adopts different protect types; namely in process of transmitting, take polytype protection, in the transmitting procedure in whole path, more meet qos requirement to make this business.The executive agent of the present embodiment is the protective device of business, and the protective device of this business can be integrated in the node at business transmission starting point place or manage in the management system of whole each node of network.The information of whole each node of network can be preset in the protective device of this business; and judge to send paragraph and the corresponding starting point of each transmission paragraph accordingly according to the information such as transportation protocol of the employing preset of each node, or by the mode manually inputted inform the transmission path of the protective device of this business business to be sent and each send nodal information included by paragraph.

As shown in Figure 1, be the schematic flow sheet of the guard method of the business according to the present embodiment, specifically comprise:

Step 101, according to the qos requirement of business and the protection combination of Reliability Model generation business, the protection of business is combined in the delivering path comprised with business and is respectively sent service protection type corresponding to paragraph.

This step 101 specifically can comprise:

Step 101a, obtains the protection class of business according to the qos requirement of business.

Protection class can obtain according to the various indexs of QoS.The index of QoS comprises: the availability of business, fault interrupting time and anti-2 the simultaneous faults abilities of business etc.After getting qos requirement, the protection class that just can belong to according to preset rules acquisition current business according to qos requirement.Such as; can according to the availability of business and fault interrupting time to delineation of activities protection class, protection class can comprise: high availability short interruptions time class, high availability class long break period, low availability short interruptions time class, low availability class long break period.The division of the high and low partition of the level of availability here and the long and short rank of break period can sets itself according to actual needs.

Step 101b, obtains qualified protect types corresponding to each transmission paragraph of business according to the protection class of business and qos requirement.

At least corresponding one of the transmission approach of each business sends paragraph, also can corresponding multiple transmission paragraph, such as 2 send paragraph, 3 send paragraphs, even more.The implementation method of the method that the division sending paragraph can transmit according to business or service protection divides, such as, divide according to the difference of the network dividing area of reality.The corresponding multiple default protect types of each transmission paragraph.

In addition, the corresponding protection class of each transmission paragraph correspond to multiple protect types.Namely the qualified protect types that each transmission paragraph of the present embodiment is corresponding is the protect types meeting the qos requirement of this business on this transmission paragraph.

Step 101c, qualified protect types, described qos requirement and the Reliability Model corresponding according to each transmission paragraph, determine the protection combination of described business.

Particularly, can according to actual needs, the protection meeting qos requirement utilizing series connection Reliability Model or Reliability Model in parallel to obtain in the combination of each qualified protect types is combined, to make all to meet qos requirement to the protection of business on whole transmission path.

Step 102, the node to each transmission paragraph sends the service protection combined message of the protection combination comprising business, selects corresponding service protection type to protect business to make each node according to service protection combined message.

After the protective device of business gets service protection combination; according to this service protection combination producing service protection combined message; and send to the node on each transmission paragraph, this business is protected according to service protection type corresponding in this service protection combined message to make node.

According to the guard method of the business of the present embodiment; qualified protect types corresponding to paragraph is sent according at least one index in the qos requirement of business or pre-designed each of many index by the starting point place of transmitting in business; thus determine the protection combination of this business; namely in the process sent in this business; each on whole transmission path sends the qualified protect types that paragraph takes to correspond in protection combination this paragraph, and this business can be made on whole transmission path all to meet qos requirement as far as possible.

Embodiment two

The guard method of the present embodiment to the business of embodiment one is done and is illustrated further.

Step 201, obtains the protection class of business according to the qos requirement of business.

In the present embodiment, suppose that the qos requirement of business Z is: business availability is greater than 0.99, and the business single fault interrupting time is less than 50ms.The protection class of this business Z be divided into the low availability short interruptions time.

Step 202, obtains the protect types group of the correspondence of each transmission paragraph according to protection class.

As shown in Figure 2, the business Z in the MPLS network of the present embodiment is sent to a F from terminal B and 4 can be divided into send paragraphs: first to send paragraph be that terminal B is to end points C; Second transmission paragraph is that end points C is to end points D; 3rd transmission paragraph is that end points D is to end points E; 4th transmission paragraph is that end points E is to end points F.It is access link that first transmission paragraph and the 4th sends paragraph, and it is network segment that the second transmission paragraph and the 3rd sends paragraph.

Particularly, first send paragraph and the 4th delivery section and drop on the default protect types group of low availability short interruptions time and be:

Access link protection category-A: availability Z11=0.999, single failure T11=40ms break period;

Access link protection category-B: availability Z12=0.9999, single failure T12=200ms break period;

Gateway protection category-A: availability Z31=0.9999, single failure T31=30ms break period;

Gateway protection category-B: availability Z32=0.99999, single failure T32=500ms break period.

The second default protect types group sending paragraph and the 3rd transmission paragraph is:

Protecting tunnel category-A: availability Z21=0.9999, single failure T21=20ms break period;

Protecting tunnel category-B: availability Z22=0.99999, single failure T22=500ms break period.

Service protection category-A: availability Z41=0.9999, single failure T41=30ms break period;

Service protection category-B: availability Z41=0.99999, single failure T41=200ms break period.

It should be noted that, category-A here, category-B represent different classifications, and such as protecting tunnel category-A refers to LSP static protection mode, and protecting tunnel category-B refers to LSP Dynamic-Recovery mode.

Step 203, removes the protect types not meeting qos requirement, and remaining protect types in each protect types group is defined as qualified protect types corresponding to each transmission paragraph from each default protect types group.

From each default protect types group, specifically remove the protect types of business single fault interrupting time and/or the business availability do not met in qos requirement.For removing according to business single fault interrupting time and business availability the protect types not meeting qos requirement in the present embodiment.

Because the qos requirement of business Z is: business availability is greater than 0.99, the business single fault interrupting time is less than 50ms, and therefore, the first qualified protect types sending paragraph and the 4th transmission paragraph has: access link protection category-A, gateway protection category-A; The second qualified protect types sending paragraph and the 3rd transmission paragraph has: protecting tunnel category-A, service protection category-A.

Step 204; the tandem compound value of the business availability of each qualified protect types is obtained according to series connection Reliability Model and qualified protect types corresponding to each transmission paragraph; when judging that tandem compound value meets the qos requirement of business, determine the protection combination of the business that is combined as of each qualified protect types.

Qualified protect types that paragraph and the 3rd sends paragraph carries out concrete example explanation for protecting tunnel category-A for access link protects category-A, second to send to send for first qualified protect types that paragraph and the 4th sends paragraph:

The acquisition of tandem compound value can obtain according to series connection reliability model, namely wherein i and n is the integer being greater than 0.

Tandem compound value=Z11 × Z21 × Z21 × Z11=0.999 × 0.9999 × 0.9999 × the 0.999=0.9978 of business availability

Clearly, tandem compound value 0.9978 > 0.99 of business availability, namely the tandem compound value of business availability meets the qos requirement of business.

In addition, business single fault interrupting time=maximum { T11, T21, T31, T41}=40ms < 50ms.Therefrom can find out, first sends paragraph, second sends paragraph, the 3rd and sends paragraph and the 4th and send maximum in single failure break period of each qualified protect types corresponding to paragraph one and meet qos requirement.

For business Z, business availability and business single fault interrupting time all meet the demands.Therefore, can determine that the protection group of business Z is combined into { (the first paragraph to be sent, access link protection category-A); (the second paragraph to be sent, protecting tunnel category-A); (the 3rd paragraph to be sent, protecting tunnel category-A); (the 4th paragraph to be sent, access link protection category-A) }.

Next; can also judge whether the tandem compound value of other qualified protect types combination can as protection combination; such as; the qualified protect types sending paragraph and the 4th transmission paragraph with first is protected category-A, second to send paragraph and the 3rd for gateway and is sent the qualified protect types of paragraph still for protecting tunnel category-A calculates; concrete account form is consistent with above-mentioned, does not repeat them here.

When determining that the protection group of business Z is combined into multiple, therefrom one can be selected arbitrarily according to actual needs, such as, can according to business cost selection one the protection combination of reality.

Next, when this business Z sends, the protection combination according to finally determining is protected this business.

According to the guard method of the business of the present embodiment; determine that each transmission paragraph meets the qualified protect types of qos requirement according to series connection Reliability Model; and determine the protection combination totally meeting the every content in qos requirement in whole transmission path according to each qualified protect types, thus the requirements of qos requirement can be met in the process of transmitting of this business Z as far as possible.

Embodiment three

The present embodiment proposes a kind of guard method of business based on above-described embodiment.

Step 301, obtains the protection class of business according to the qos requirement of business.

In the present embodiment, suppose that the qos requirement of business L is: business availability is more than or equal to 0.999, and the business single fault interrupting time is less than 50ms.The protection class of this business L be divided into the high availability short interruptions time.

Step 302, obtains the protect types group of the correspondence of each transmission paragraph according to protection class.

The business L of the present embodiment is sent to business end K from business end G and is divided into 4 transmission paragraphs: the first transmission paragraph is that business end G is to business end H; Second transmission paragraph is that business end H is to business end I; 3rd transmission paragraph is that business end I is to business end J; 4th transmission paragraph is that business end J is to business end K.

Particularly, first send paragraph and the 4th delivery section and drop on the default protect types group of high availability short interruptions time and be:

Access link protection category-A: availability L11=0.999, single failure T11=40ms break period;

Access link protection category-B: availability L12=0.9999, single failure T12=200ms break period;

Gateway protection category-A: availability L31=0.9999, single failure T31=30ms break period;

Gateway protection category-B: availability L32=0.99999, single failure T32=500ms break period.

The second default protect types group sending paragraph and the 3rd transmission paragraph is:

Protecting tunnel category-A: availability L21=0.9999, single failure T21=20ms break period;

Protecting tunnel category-B: availability L22=0.999, single failure T22=500ms break period.

Service protection category-A: availability L41=0.9999, single failure T41=30ms break period;

Service protection category-B: availability L41=0.99999, single failure T41=200ms break period.

Step 303, removes the protect types not meeting qos requirement, and remaining protect types in each protect types group is defined as qualified protect types corresponding to each transmission paragraph from each default protect types group.

From each default protect types group, specifically remove the protect types of business single fault interrupting time and/or the business availability do not met in qos requirement.For removing according to business single fault interrupting time and business availability the protect types not meeting qos requirement in the present embodiment.

Because the qos requirement of business L is: business availability is greater than 0.999, the business single fault interrupting time is less than 50ms, and therefore, the first qualified protect types sending paragraph and the 4th transmission paragraph has: access link protection category-A, gateway protection category-A; The second qualified protect types sending paragraph and the 3rd transmission paragraph has: protecting tunnel category-A, service protection category-A.

Step 304; the tandem compound value of the business availability of each qualified protect types is obtained according to series connection Reliability Model and qualified protect types corresponding to each transmission paragraph; when judging that tandem compound value does not meet the qos requirement of business; according to Reliability Model in parallel, series connection Reliability Model and each mixed number sending the business availability of each qualified protect types of default protect types acquisition corresponding to paragraph; and when judging that mixed number meets the qos requirement of business, determine the protection combination of the business that is combined as of each protect types.

Qualified protect types that paragraph and the 3rd sends paragraph carries out concrete example explanation for protecting tunnel category-A for access link protects category-A, second to send to send for first qualified protect types that paragraph and the 4th sends paragraph:

The acquisition of tandem compound value can obtain according to series connection reliability model, namely

wherein i and n is the integer being greater than 0.

Tandem compound value=L11 × L21 × L21 × L11=0.999 × 0.9999 × 0.9999 × the 0.999=0.9978 of business availability, can find out, this tandem compound value does not also meet QoS of survice requirement.

Comprise according to Reliability Model in parallel, series connection Reliability Model and each mixed number sending the business availability of each qualified protect types of default protect types acquisition corresponding to paragraph:

Obtain the parallel combination value of business availability corresponding to this transmission paragraph to be changed according to Reliability Model in parallel and each qualified protect types corresponding to transmission paragraph to be changed, this transmission paragraph to be changed is the transmission paragraph that business availability selected when obtaining tandem compound value is minimum;

The mixed number of the business availability of each transmission paragraph is obtained according to series connection Reliability Model and parallel combination value.

When the transmission paragraph that the business availability selected when tandem compound value in computing service availability is minimum is corresponding multiple, one of them can be selected to send paragraph and to obtain its parallel combination value, multiple or all minimum transmission paragraph also can be selected to obtain its parallel combination value.Select whole transmission paragraphs in the present embodiment and obtain its parallel combination value.

Due to when the series connection group combined value of the business of acquisition availability, the business availability of selected L11 is minimum, and the present embodiment obtains first according to Reliability Model in parallel and sends the parallel combination value that paragraph and the 4th sends the business availability of paragraph.The present embodiment is selected, and sends paragraph and the 4th and sends on the basis of paragraph employing access link protection category-A, then protect category-A in parallel with gateway respectively first.Adopt parallel reliability model

The first parallel combination value sending the business availability of paragraph and the 4th transmission paragraph is

And the parallel combination value combining series connection reliability model calculating availability is 1-(1-L11) × (1-L31)=1-(1-0.999) × (1-0.9999)=0.9999999

Mixed number=[1-(1-L11) × (1-L31)] × (L21 × L21) × [1-(1-L11) × (1-L31)]=0.99979981>0.999 of business availability, therefrom can find out, the mixed number of this availability meets qos requirement.

In addition, business single fault interrupting time={ T11, T21, T31, T41}=40ms, it meets the requirement of business single fault interrupting time in the qos requirement of business L to maximum.

Therefore, can determine that the protection group of business L is combined in { (the first paragraph to be sent, access link protection category-A and gateway protect category-A in parallel); (the second paragraph to be sent, protecting tunnel category-A); (the 3rd paragraph to be sent, protecting tunnel category-A); (the 4th paragraph to be sent, access link protection category-A and gateway protect category-A in parallel) }.

One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RZM, magnetic disc or CD etc. various can be program code stored medium.

Embodiment four

The present embodiment provides a kind of protective device of business, for performing the guard method of the business of embodiment one.The protective device of this business can be integrated in the node at service transmission path starting point place.

As shown in Figure 3A, the protective device of the business of the present embodiment comprises generation module 410 and sending module 420.

Wherein, generation module 410 is for combining according to the qos requirement of business and the protection of Reliability Model generation business, and the protection of business is combined in the delivering path comprised with business and respectively sent service protection type corresponding to paragraph; Sending module 420 is connected with generation module 410; for sending the service protection combined message of the protection combination comprising business to the node of each transmission paragraph, corresponding service protection type is selected to protect business to make each node according to service protection combined message.

Particularly as shown in Figure 3 B, generation module 410 comprises acquisition submodule 401, obtains qualified protect types submodule 402 and determine submodule 403.

Wherein, submodule 401 is obtained for obtaining the protection class of business according to the qos requirement of business; Obtain qualified protect types submodule 402 to be connected with acquisition submodule 401, the qualified protect types that each transmission paragraph for obtaining business according to the protection class of business and qos requirement is corresponding; Determine submodule 403 respectively with acquisition submodule 401, obtain qualified protect types submodule 402 and sending module 520 is connected, for qualified protect types, qos requirement and the Reliability Model corresponding according to each transmission paragraph, determine the protection combination of business.Obtain submodule 401 also for obtaining the qos requirement of business.

The concrete operation method of the protective device of this business is consistent with embodiment one, does not repeat them here.

According to the protective device of the business of the present embodiment; qualified protect types corresponding to paragraph is sent according at least one index in the QoS of business or pre-designed each of many index by the starting point place of transmitting in business; thus determine the protection combination of this business; namely in the process sent in this business; send paragraph according to each to take to protect the qualified protect types corresponding to this paragraph in combination, this business can be made as far as possible on whole transmission path all to meet qos requirement.

Embodiment five

The protective device of the present embodiment to the business of embodiment four is described further.

As shown in Figure 4, the protective device of the business of the present embodiment comprises and divides module 501, comprises and obtain submodule 401, obtain qualified protect types submodule 402 and determine generation module 410 and the sending module 420 of submodule 403.Comprising obtaining submodule 401, obtaining qualified protect types submodule 402, determining that the generation module 410 of submodule 403 is consistent with above-described embodiment with sending module 420, do not repeat them here.Divide module 501 to be connected with acquisition submodule 401; for according to the availability of business and fault interrupting time to delineation of activities protection class, protection class comprises: high availability short interruptions time class, high availability class long break period, low availability short interruptions time class, low availability class long break period.Now, submodule is obtained specifically for obtaining the protection class of business according to the business availability in the qos requirement of business and fault interrupting time.

Obtain qualified protect types submodule 402 specifically for:

The each default protect types group of the correspondence of each transmission paragraph is obtained according to protection class;

From each default protect types group, remove the protect types not meeting qos requirement, and remaining protect types in each protect types group is defined as qualified protect types corresponding to each transmission paragraph.

In the present embodiment really stator modules 403 specifically for:

The tandem compound value of the business availability of each qualified protect types is obtained according to series connection Reliability Model and qualified protect types corresponding to each transmission paragraph;

When judging that tandem compound value meets the qos requirement of business, determine the protection combination of the business that is combined as of each qualified protect types.

This determine submodule 403 concrete also for:

When judging that tandem compound value does not meet the qos requirement of business, according to Reliability Model in parallel, series connection Reliability Model and each mixed number sending the business availability of each qualified protect types of default protect types acquisition corresponding to paragraph;

When judging that mixed number meets the qos requirement of business, determine the protection combination of the business that is combined as of each protect types.

More specifically, this determine submodule 403 for:

Obtain the parallel combination value of business availability corresponding to this transmission paragraph to be changed according to Reliability Model in parallel and each qualified protect types corresponding to transmission paragraph to be changed, transmission paragraph to be changed is the transmission paragraph that business availability selected when obtaining tandem compound value is minimum;

The mixed number of the business availability of each transmission paragraph is obtained according to series connection Reliability Model and parallel combination value;

When judging that mixed number meets the qos requirement of business, determine the protection combination of the business that is combined as of each protect types.

The concrete operations mode of the protective device of the business of the present embodiment is consistent with above-described embodiment, does not repeat them here.

According to the protective device of the business of the present embodiment; by each qualified protect types that each transmission paragraph obtaining business is corresponding; and the protection combination of this business is determined according to correspondingly qos requirement; namely in the process sent in this business; send paragraph according to each to take to protect the qualified protect types corresponding to this paragraph in combination, the requirements of qos requirement can be met as far as possible.

Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims (12)

1. a guard method for business, is characterized in that, comprising:
According to the qos requirement of business and the protection combination of Reliability Model generation business, the protection of described business is combined to comprise and is respectively sent service protection type corresponding to paragraph with the delivering path of described business;
Node to each transmission paragraph sends the service protection combined message of the protection combination comprising described business, selects corresponding service protection type to protect described business to make each node according to described service protection combination;
Wherein, the protection combination of the described qos requirement according to business and Reliability Model generation business comprises:
The protection class of described business is obtained according to the qos requirement of business;
Qualified protect types corresponding to each transmission paragraph of described business is obtained according to the protection class of described business and described qos requirement;
Qualified protect types, described qos requirement and the Reliability Model corresponding according to each transmission paragraph, determine the protection combination of described business.
2. the guard method of business according to claim 1, is characterized in that, the described qos requirement according to business also comprises before obtaining the protection class of described business:
According to the availability of business and fault interrupting time to described delineation of activities protection class, described protection class comprises: high availability short interruptions time class, high availability class long break period, low availability short interruptions time class and low availability class long break period;
The protection class that the described qos requirement according to business obtains described business comprises:
The protection class of described business is obtained according to the business availability in the qos requirement of described business and fault interrupting time.
3. the guard method of business according to claim 1, is characterized in that, the qualified protect types that the described protection class according to described business and described qos requirement obtain each transmission paragraph of described business corresponding comprises:
The each default protect types group of the correspondence of each described transmission paragraph is obtained according to described protection class;
From each described default protect types group, remove the protect types not meeting described qos requirement, and remaining protect types in each protect types group is defined as qualified protect types corresponding to each described transmission paragraph.
4. the guard method of business according to claim 3, is characterized in that, the described protect types not meeting described qos requirement of removing from each described default protect types group comprises:
The protect types of business single fault interrupting time and/or the business availability do not met in qos requirement is removed from each described default protect types group.
5. the guard method of business according to claim 4, is characterized in that, qualified protect types, described qos requirement and the Reliability Model corresponding according to each described transmission paragraph, determines the protection combination of described business, comprising:
The tandem compound value of the business availability of each qualified protect types is obtained according to series connection Reliability Model and qualified protect types corresponding to each described transmission paragraph;
When judging that described tandem compound value meets the qos requirement of described business, determine the protection combination being combined as described business of described each qualified protect types.
6. the guard method of business according to claim 5, is characterized in that, also comprises:
When judging that described tandem compound value does not meet the qos requirement of described business, the default protect types corresponding according to Reliability Model in parallel, series connection Reliability Model and each described transmission paragraph obtains the mixed number of the business availability of each described qualified protect types;
When judging that described mixed number meets the qos requirement of described business, determine the protection combination being combined as described business of described each protect types.
7. the guard method of business according to claim 6; it is characterized in that; the described default protect types corresponding according to Reliability Model in parallel, series connection Reliability Model and each described transmission paragraph obtains the mixed number of the business availability of each described qualified protect types, comprising:
Obtain the parallel combination value of the business availability that transmission paragraph to be changed is corresponding described in this according to Reliability Model in parallel and each qualified protect types corresponding to transmission paragraph to be changed, described transmission paragraph to be changed is the transmission paragraph that business availability selected when obtaining described tandem compound value is minimum;
The mixed number of the business availability of described each transmission paragraph is obtained according to described series connection Reliability Model and described parallel combination value.
8. a protective device for business, is characterized in that, comprising:
Generation module, for combining according to the qos requirement of business and the protection of Reliability Model generation business, the protection of described business is combined to comprise and is respectively sent service protection type corresponding to paragraph with the delivering path of described business;
Sending module, for sending the service protection combined message of the protection combination comprising described business to the node of each transmission paragraph, selects corresponding service protection type to protect described business to make each node according to described service protection combined message;
Described generation module comprises:
Obtain submodule, for obtaining the protection class of described business according to the qos requirement of business;
Obtain qualified protect types submodule, the qualified protect types that each transmission paragraph for obtaining described business according to the protection class of described business and described qos requirement is corresponding;
Determine submodule, for qualified protect types, described qos requirement and the Reliability Model corresponding according to each described transmission paragraph, determine the protection combination of described business.
9. the protective device of business according to claim 8, is characterized in that, also comprises:
Divide module, for according to the availability of business and fault interrupting time to described delineation of activities protection class, described protection class comprises: high availability short interruptions time class, high availability class long break period, low availability short interruptions time class and low availability class long break period;
Described acquisition submodule is specifically for obtaining the protection class of described business according to the business availability in the qos requirement of described business and fault interrupting time.
10. the protective device of business according to claim 8, is characterized in that, the qualified protect types submodule of described acquisition specifically for:
The each default protect types group of the correspondence of each described transmission paragraph is obtained according to described protection class;
From each described default protect types group, remove the protect types not meeting described qos requirement, and remaining protect types in each protect types group is defined as described qualified protect types corresponding to each described transmission paragraph.
The protective device of 11. business according to claim 10, is characterized in that, described determine submodule specifically for:
The tandem compound value of the business availability of each qualified protect types is obtained according to series connection Reliability Model and qualified protect types corresponding to each described transmission paragraph;
When judging that described tandem compound value meets the qos requirement of described business, determine the protection combination being combined as described business of described each qualified protect types.
The protective device of 12. business according to claim 11, is characterized in that, described determine submodule also for:
When judging that described tandem compound value does not meet the qos requirement of described business, the default protect types corresponding according to Reliability Model in parallel, series connection Reliability Model and each described transmission paragraph obtains the mixed number of the business availability of each described qualified protect types;
When judging that described mixed number meets the qos requirement of described business, determine the protection combination being combined as described business of described each protect types.
CN201210251368.6A 2012-07-19 2012-07-19 Protection method and device of services CN102821041B (en)

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