CN101841487A - Configuration method for aggregating link service flow and packet switching device - Google Patents

Configuration method for aggregating link service flow and packet switching device Download PDF

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Publication number
CN101841487A
CN101841487A CN201010188366A CN201010188366A CN101841487A CN 101841487 A CN101841487 A CN 101841487A CN 201010188366 A CN201010188366 A CN 201010188366A CN 201010188366 A CN201010188366 A CN 201010188366A CN 101841487 A CN101841487 A CN 101841487A
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China
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described
service flow
bandwidth
aggregated links
member link
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CN201010188366A
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Chinese (zh)
Inventor
杨发明
孙德胜
柯明
陶慕柳
向奇敏
王福亮
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中兴通讯股份有限公司
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Priority to CN201010188366A priority Critical patent/CN101841487A/en
Publication of CN101841487A publication Critical patent/CN101841487A/en

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Abstract

The invention discloses a configuration method for aggregating link service flow and a packet switching device. The method includes: a member link for aggregating link is selected according to bandwidth parameter of service flow; and service flow is carried onto the selected member link. By adopting the invention, the problem that repetitious adjusting from service flow to the member link is caused by jamming of member link or overloading in link aggregation is solved, thus the effects of ensuring service quality of service flow and improving link aggregating efficiency are achieved.

Description

The collocation method of aggregating link service flow and packet switching device

Technical field

The present invention relates to the communications field, in particular to a kind of collocation method and packet switching device of aggregating link service flow.

Background technology

Along with the growth of data business volume with to the raising of quality of service requirement, providing of high bandwidth becomes the packet network most important characteristic day by day, and link aggregation is an important technology that satisfies the network high bandwidth requirements.

Definition link aggregation technology is that several physical links with two equipment rooms are combined into a link (being also referred to as an aggregated links) in logic in the IEEE 802.3ad agreement, and this link logically is an integral body, and the details of the composition of its inside and transmission data is transparent to top service.

In order to realize the balanced load of data flow in aggregated links, in the prior art according to Internet protocol (the Internet Protocol of data forwarding message, abbreviate IP as) address or medium access control (Media Access Control, abbreviating MAC as) address divides into different service flow with the data message that arrives, and different service flow are assigned to the different members link get on.But operation is not owing to consider the bandwidth attribute of service flow like this, thereby can not effectively utilize the aggregated links bandwidth even can cause service flow to take place on Member Link congested.

Correlation technique has proposed a kind of method: the actual bandwidth flow of dynamic surveillance aggregated links different members link, readjust the distribution of different service flow on Member Link according to link member port actual bandwidth flow.

The inventor finds: the advantage of this technology is to avoid link congestion as far as possible, makes flow on the aggregated links obtain efficient balance between Member Link and shares, and makes full use of the aggregated links bandwidth.But because this technology is a kind of assignment of traffic monitoring mechanism afterwards, the current actual bandwidth total flow of each port that obtains according to dynamic surveillance is adjusted the distribution of different service flow on Member Link, therefore link congestion or bearing load are excessive in the time of still can causing service flow to be assigned on the Member Link, and then can cause the adjustment repeatedly that repeatedly service flows to Member Link.

Summary of the invention

Main purpose of the present invention is to provide a kind of collocation method and packet switching device of aggregating link service flow, one of to address the above problem at least.

To achieve these goals, according to an aspect of the present invention, provide a kind of collocation method of aggregating link service flow.

Collocation method according to aggregating link service flow of the present invention comprises: according to the Member Link of the bandwidth parameter selective polymerization link of service flow; And service flow is carried on the Member Link of selection.

Further, comprise according to the Member Link of the bandwidth parameter selective polymerization link of service flow: under the situation of the new service flow of configuration, the bandwidth of the not bandwidth reserved of all Member Links that disposed of aggregated links and new service flow relatively; If the not bandwidth reserved of all Member Links that disposed of aggregated links is then determined the service flow that has disposed in the aggregated links is adjusted all less than the bandwidth of new service flow; Otherwise determine the service flow that has disposed in the aggregated links is not adjusted.

Further, service flow is carried on the Member Link comprises: the service flow that has disposed in the aggregated links is not adjusted if determine, then new service flow is carried on the Member Link, wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.

Further, new service flow is carried on the Member Link comprises: the load balancing principle according to aggregated links, new service flow is carried on the Member Link, wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.

Further, service flow is carried on the Member Link comprises: the service flow that has disposed in the aggregated links is adjusted if determine, then adjust some or all of in all service flow that disposed in the aggregated links, make the not bandwidth reserved of at least one Member Link more than or equal to the bandwidth of new service flow in the position of Member Link; New service flow is carried on the adjusted Member Link, and wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.

Further, new service flow is carried on the adjusted Member Link comprises: according to the load balancing principle of aggregated links, new service flow is carried on the adjusted Member Link, and wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.

Further, the Member Link according to the bandwidth parameter selective polymerization link of service flow comprises: in the aggregated links maintenance process, if the load of aggregated links is unbalanced, determine the service flow that has disposed in the aggregated links is adjusted.

Further, service flow is carried on the Member Link comprises: adjust some or all of in all service flow that disposed in the aggregated links, make aggregated links reach load balancing in the position of Member Link.

Further, the aggregated links maintenance process comprises one of following: control plane adds Member Link or deletes; One or more service flow of the process aggregated links that control plane will dispose are deleted from aggregated links; The webmaster request is carried out resource optimization to aggregated links.

Further, service flow comprises: label switching path LSP, virtual LAN VLAN stream, media access control MAC stream, VLAN+MAC stream.

To achieve these goals, according to another aspect of the present invention, provide a kind of packet switching device.

Packet switching device according to the present invention comprises: select module, be used for the Member Link according to the bandwidth parameter selective polymerization link of service flow; Carrier module is used for service flow is carried on the Member Link of selection.

Further, select module to comprise: comparison module under the situation of the new service flow of configuration, is used for the bandwidth of not bandwidth reserved and new service flow of all Member Links that disposed of comparison aggregated links; First determination module, if the not bandwidth reserved of all Member Links that disposed that is used for aggregated links all less than the bandwidth of new service flow, then determine in the aggregated links configuration service stream adjust; There is the bandwidth of the not bandwidth reserved of at least one Member Link more than or equal to new service flow in second determination module if be used for aggregated links, then determines the service flow that has disposed in the aggregated links is not adjusted.The 3rd determination module in the aggregated links maintenance process, if it is unbalanced to be used for the load of aggregated links, is determined the service flow that has disposed in the aggregated links is adjusted.

Further, carrier module comprises: first configuration module is used under the situation that the service flow of determining aggregated links has been disposed is not adjusted new service flow being carried on the Member Link, wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow; Adjusting module, be used under the situation that the service flow of determining aggregated links has been disposed is carried out, adjust some or all of in all service flow that disposed in the aggregated links, make the not bandwidth reserved of at least one Member Link more than or equal to the bandwidth of new service flow in the position of Member Link; Second configuration module is carried on new service flow on the adjusted Member Link, and wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow; The 3rd configuration module is adjusted some or all of in the position of Member Link in all service flow that disposed in the aggregated links, makes aggregated links reach load balancing.

By the present invention, employing is according to the Member Link of the bandwidth parameter selective polymerization link of service flow, and service flow is carried on the Member Link of selection, it is congested or bearing load is excessive to have solved in the aggregated links Member Link, cause service and flow to the problem that Member Link is repeatedly adjusted repeatedly, and then reached the service quality that has guaranteed service flow, improve the effect of link aggregation efficient.

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 the structured flowchart according to the packet network of the embodiment of the invention;

Fig. 2 is the flow chart according to the collocation method of the aggregating link service flow of the embodiment of the invention;

Fig. 3 is the network diagram according to the aggregated links of the embodiment of the invention;

Fig. 4 is the flow chart according to aggregating link service flow collocation method in the LSP constructive process of the embodiment of the invention;

Fig. 5 is according to the flow chart of implementing the aggregating link service flow collocation method in the aggregated links maintenance process of the embodiment of the invention;

Fig. 6 is the structured flowchart according to the packet switching device of the embodiment of the invention; And

Fig. 7 is the preferred construction block diagram according to the packet switching device of the embodiment of the invention.

Embodiment

Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

Packet network comprises control plane 2 and datum plane 4, as shown in Figure 1, control plane 2 comprises label switched path (Label Switched Path, abbreviate LSP as) control module 22 and link control module 24, introducing each embodiment of the present invention below all is that the basis is implemented with the packet network.

Fig. 2 is the flow chart according to the collocation method of the aggregating link service flow of the embodiment of the invention, comprises following step:

Step S20 is according to the Member Link of the bandwidth parameter selective polymerization link of service flow.

Step S40 is carried on service flow on the Member Link of selection.

In correlation technique, in layoutprocedure to aggregating link service flow, adopt the actual bandwidth flow of dynamic surveillance aggregated links different members link, readjust the distribution of different service flow on Member Link according to link member port actual bandwidth flow, this method is the monitoring mechanism after a kind of assignment of traffic, link congestion or bearing load are excessive in the time of still can causing service flow to be assigned on the Member Link, and then can cause the adjustment repeatedly that repeatedly service flows to Member Link, present embodiment adopts the bandwidth parameter according to predetermined different service flow, different service flow are evenly distributed on the Member Link of aggregated links, this configuration is the configuration of flow being carried out reasonable prediction, so adjustment repeatedly after having avoided, effectively realize link aggregation, guarantee the bandwidth service quality requirement of each service flow.

Preferably, step 20 comprises: under the situation of the new service flow of configuration, the relatively not bandwidth reserved of all Member Links that disposed of aggregated links and the newly bandwidth of service flow, if the not bandwidth reserved of all Member Links that disposed of aggregated links is then determined the service flow that has disposed in the aggregated links is adjusted all less than the bandwidth of new service flow; Otherwise determine the service flow that has disposed in the aggregated links is not adjusted.

, dynamically adjust the position of the existing stream of configuration service on its Member Link in the aggregated links, thereby realized link aggregation efficiently all less than the bandwidth of service flow at the not bandwidth reserved of all Member Links, improved the efficient of link aggregation.

Need to prove that before carrying out this step, aggregated links information has disposed to control plane, aggregated links information comprises: the sign of aggregated links sign, each Member Link and bandwidth reserved not thereof.

Preferably, step 40 comprises: if determine the service flow that has disposed in the aggregated links is not adjusted, then new service flow is carried on the Member Link, wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.Wherein, the load balancing principle according to aggregated links is carried on new service flow on the Member Link, and wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.That is, can select a Member Link for new service flow according to the equally loaded principle of flow in the aggregated links on the different members link, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.

This step is carried on service flow on the Member Link, be that control plane disposes the forward-path list item to datum plane at the aggregated links two ends, wherein, the forward-path list item comprises: be bandwidth (bandwidth reserved) information of service flow distribution, the exit position information that service flow is transmitted.Need to prove that the establishment configuration of service flow forward-path can make the webmaster request trigger, also can be to trigger by the signaling that transmits between network node.

Pass through above-mentioned steps, new service flow is carried on has on the Member Link of bandwidth reserved not more than or equal to the bandwidth of new service flow, preferably, there be the bandwidth of the not bandwidth reserved of a plurality of Member Links more than or equal to new service flow, and available total band width in physical of these Member Links is identical, one that then can select maximum not bandwidth reserved as bearing link, has guaranteed the load balancing of aggregated links.

Preferably, step 40 comprises: if determine the service flow that has disposed in the aggregated links is adjusted, then adjust some or all of in all service flow that disposed in the aggregated links, make the not bandwidth reserved of at least one Member Link more than or equal to the bandwidth of new service flow in the position of Member Link.Wherein, can be according to the load balancing principle of aggregated links, new service flow is carried on the adjusted Member Link, wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of described new service flow, that is, and and can be according to the equally loaded principle of flow in the aggregated links on the different members link, be that new service flow is selected a Member Link in adjusted Member Link, and the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow.

Bandwidth usage situation according to present each member of aggregated links, if each Member Link does not all have enough not bandwidth reserveds to satisfy the demand of new configuration service stream bandwidth, adjust the Member Link position of existing service flow, and its forward-path item of notification data plane modifications.The fragment that is about to a plurality of link circuit resources is put in order, have at least the not bandwidth reserved of a Member Link can satisfy the bandwidth demand that new configuration service flows, promptly gather a link that satisfies new configuration service stream bandwidth demand, optimized the resource of aggregated links, improved the efficient of link aggregation.

Preferably, step 20 comprises: in the aggregated links maintenance process, if the load of aggregated links is unbalanced, determine the service flow that has disposed in the aggregated links is adjusted.

Preferably, step 40 comprises: adjust some or all of in the position of Member Link in all service flow that disposed in the aggregated links, make aggregated links reach load balancing.

By above-mentioned steps, under the unbalanced situation of load, service flow is adjusted between Member Link, make load balancing, optimized resource distribution.

Need to prove, when one of following situation, also can carry out the operation of this step:

1) control plane carry out aggregated links Member Link interpolation or the deletion after.

2) control plane will dispose one or more service flow of this aggregated links of process after the deletion of this aggregated links.

When 3) the webmaster request is carried out resource optimization to aggregated links.

Preferably, service flow comprises: label switching path LSP, VLAN (VirtualLocal Area Network abbreviates VLAN as) stream, MAC stream, VLAN+MAC stream.

The sign of service flow is various, can adopt LSP label, MAC Address, VLAN sign+MAC Address etc., has improved applicability of the present invention and flexibility.

In sum, in the above-described embodiments, a service flow selects Member Link need satisfy following 2 requirements:

1) idle bandwidth of selected Member Link (also claiming not bandwidth reserved) need satisfy the bandwidth requirement of service flow;

2) when aggregated links is carried a plurality of service flow, all service flow that link member selection will be able to make aggregated links energy efficient balance load sharing aggregated links be carried.

Above-mentioned steps can be an one directional service stream through the service flow of aggregated links, also can be bi-directional service stream.If the service flow through aggregated links is a bi-directional service stream, can be one of following dual mode to its forward and reverse Member Link selection mode then:

1) must be through identical Member Link.

2) allow through different Member Links.

This embodiment is that control plane is configured the service flow forward-path, and trigger condition can be signaling request, network management configuration request etc.According to the demand of service flow, dynamically adjust the position of the existing stream of configuration service on its Member Link on the aggregated links, thereby effectively realize link aggregation, guarantee the bandwidth service quality requirement of each service flow.

Fig. 3 is the network diagram according to the aggregated links of the embodiment of the invention, and as shown in Figure 3, Member Link Link1-1, Link1-2, Link1-3 form an aggregated links Link, and this aggregated links connects Packet Switching Node A and Packet Switching Node B.

In the present invention describes, claim that also an aggregated links is a logical links.

Be elaborated below in conjunction with the implementation procedure of preferred embodiments and drawings to the foregoing description.

In the following embodiment of the present invention, adopt following parametric description mode:

1) Linka-b represents the Member Link of a logical links Linka, and this link is a physical link;

2) Linka-b (BW1, but the BW1 BW2) represents this physical link utilized bandwidth, but BW2 represents the utilized bandwidth of not reserving of link, also claims not bandwidth reserved.

3) the maximum LSP bandwidth of the not reservation of the MaxLspBW presentation logic link Linka among the Linka (MaxLspBW), MaxLspBW should be the not maximums in the bandwidth reserved (for avoiding in the user data package transmission incorrect order taking place, a LSP can not stride a plurality of Member Links simultaneously and transmits in the present embodiment) of all Member Links.If the guaranteed bandwidth of a LSP is BW0, then when BW0<=MaxLspBW, this LSP could pass through this logical links.Logical links Linka also has other describable bandwidth parameter " maximum link bandwidth (bandwidth that can be used), maximum reservable bandwidth, not bandwidth reserved (on each Member Link not bandwidth reserved sum) " etc., and these parameters are used in feature operations such as network traffics equalization algorithm.

4) the key feature value information of a LSP of LSP (CIR, link ID) expression, wherein: CIR represents guaranteed bandwidth; Link ID represents the Member Link sign of LSP through aggregated links.

Need to prove that the Member Link information of aggregated links is used in this locality, the Member Link information that other node can not nonrecognition aggregated links inside in the network, and the information of logical links can allow other node use by means such as route flood.

Embodiment one

The invention process case description be link aggregation service flow layoutprocedure when creating unidirectional LSP through an aggregated links.

In the present embodiment, the present state information of aggregated links is made of following three class values:

1)LSP1(9M,Link1-1)、LSP2(9M,Link1-2)、LSP3(3M,Link1-3)。

2) Member Link Link1-1 (20M, 11M), Link1-2 (20M, 11M), Link1-3 (20M, 17M).

3) aggregated links is not reserved maximum LSP bandwidth Link1 (17M);

Because the not bandwidth reserved of Link1-1, Link1-2, Link1-3 is respectively: 11M, 11M, 17M, get wherein maximum 17M as the maximum LSP bandwidth of the not reservation of logical links Link1.

Wherein, set up LSP4 (its CIR is 11M) by distributed RSVP-TE signaling in the network, calculate LSP4 through route and need pass through Link1.Fig. 4 is the flow chart according to aggregating link service flow collocation method in the LSP constructive process of the embodiment of the invention, set up in the process of LSP4 in employing distributed signaling mode, when the LSP signaling reaches the aggregated links end points, according to step shown in Figure 2, implement the aggregating link service flow configuration in the LSP constructive process and comprise the steps:

Step S402 receives the LSP request to create, determines the logical links (physical link) of LSP process.

In this step, LSP4 sets up signaling and reaches node A, according to this signaling solicited message, determines that it (also is the outbound of LSP in this locality that LSP need pass through link Link1.)。

Need to prove that the local breakout link of determining the LSP process is to be one of following mode:

1) the signaling solicited message should indicate and will pass through Link1;

2) the signaling solicited message does not indicate through this node and need pass through the local breakout link, the local outbound of determining process that calculates by route.

Need to prove that the implementation procedure of step S402 mainly is responsible for finishing by the LSP control module 22 among Fig. 1.

Step S404 according to the basic configuration informations such as bandwidth of LSP, selects a Member Link as its bearing link, reserves the bandwidth resources that LSP needs simultaneously.

In step S404,, need to select a Member Link as its bearing link according to the bandwidth information of LSP4; Though Link1-1, Link1-2, the present not reserved bandwidth value of Link1-3 all are not less than guaranteed bandwidth 11 M that LSP4 needs, and for balanced load, now select the bearing link of Link1-3 as LSP4.

Need to prove that step S404 implementation procedure mainly is responsible for finishing by the link control module among Fig. 1 24.

Step S406 distributes the LSP label, sets up the corresponding forward-path list item of LSP at the polymerization two ends.

Through the RSVP-TE Signalling exchange, determine that LSP4 goes into label and outgoing label through all of A, Z, A, Z node are set up the corresponding data forwarding list item of LSP, and the configuration forwarding-table item is to datum plane.

The main information of forwarding-table item is shown in the corresponding forwarding-table item of B node LSP4 in corresponding forwarding-table item of the A node LSP4 in the table 1 and the table 2.Be that LSP institute distributed labels value is unique in the Link1 scope when wherein LSP strides across aggregated links Link1.

The corresponding forwarding-table item of table 1A node LSP4

Go into label Outgoing label Outbound port ??CIR ??1 ??2 The Link1-3 port ??11M

The corresponding forwarding-table item of table 2B node LSP4

Go into label Outgoing label Outbound port ??CIR ??2 ??3 The Link2-1 port ??11M

In this step, also need following 2 points of explanation:

1) if in signaling procedure, the signaling information that the B node is received from the A node is not included in the outbound information of B node, and the B node also needs to calculate definite outbound by route.

2) when LSP process Link1, distributed labels is unique in the Link1 scope, so the corresponding forwarding-table item of LSP receiving terminal does not retrain the receipts label must be related with certain concrete physical link, as in Node B, require the inlet label 2 must be related, this means that any Member Link from Link1 receives that label value is that 2 Bao Wen is by forwarding by the physical port of the forwarding-table item that disposes from Link2-1 with Link1-3.The purpose of doing like this is: afterwards in the maintenance process of aggregated links, if need to adjust the Member Link position of LSP, then do not need the label of reallocating, and when only relating to the Member Link adjustment (not relating to the bandwidth adjustment) as if maintenance process, only need to revise the LSP forward-path list item of making a start, and do not need to revise LSP receiving end forward-path list item, thereby simplify the operation processing.

Need to prove that step S406 implementation procedure mainly is responsible for finishing by the LSP control module 22 among Fig. 1.

After above-mentioned three steps were finished, the main state information of aggregated links was made of following three class values:

1)LSP1(9M,Link1-1)、LSP2(9M,Link1-2)、LSP3(3M,Link1-3)、LSP4(11M,Link1-3)。

2)Link1-1(20M,11M)、Link1-2(20M,11M)、Link1-3(20M,6M)。

3)Link1(11M)。

LSP4 finishes layoutprocedure, and flow process finishes.

Embodiment two

In the present embodiment, realized the aggregated links that embodiment one sets up is safeguarded.In the present embodiment, the aggregated links initial state information is made of following three class values:

1)Link1-1(20M,20M)、Link1-2(20M,20M)、Link1-3(20M,0M);

2)LSP1(8M,Link1-3)、LSP2(8M,Link1-3)、LSP3(4M,Link1-3);

3)Link1(20M)

Fig. 5 is according to the flow chart of implementing the aggregating link service flow collocation method in the aggregated links maintenance process of the embodiment of the invention, if the aggregated links Link1 resource optimization request that A receives webmaster, then according to shown in Figure 5, the aggregating link service flow configuration comprises the steps:

Step S502 in the aggregated links maintenance process, according to judging needs, reselects the Member Link position at all or part of service flow place.

In step S502, by analysis and judgement, at present in aggregated links Link1 inside, all LSP streams all concentrate on the Link1-3, and Link1-1 and Link1-2 free time, so for balanced load, determine and to adjust to the Link1-1 position to LSP1, LSP2 is adjusted to the Link1-2 position;

Need to prove that step S502 implementation procedure mainly is responsible for finishing by the link control module among Fig. 1 24.

Step S504 according to the Member Link position of reselecting for service flow, revises the forward-path configuration item of service flow.

In step S504, behind the selection Member Link,,, revise the forward-path list item of LSP1 and LSP2 at node A according to LSP1 and the new Member Link position of LSP2, the modification of forward-path list item is finished on the notification data plane simultaneously.LSP1 and LSP2 receiving terminal (promptly in the Node B position) forward-path configuration data does not need to change.

Need to prove that step S504 implementation procedure mainly is responsible for finishing by the LSP control module 22 among Fig. 1.

More than after three steps realize finishing, the at present main state information of aggregated links is made of following three class values:

1)Link1-1(20M,12M)、Link1-2(20M,12M)、Link1-3(20M,16M);

2)LSP1(8M,Link1-1)、LSP2(8M,Link1-2)、LSP3(4M,Link1-3);

3)Link1(16M)。

LSP3 finishes layoutprocedure, and flow process finishes.

Need to prove, that the foregoing description one and embodiment two describe is multiprotocol label switching (Multi-Protocol Label Switching, abbreviate MPLS as) the LSP instantiation, but technical solution of the present invention may be used on packet networks such as MPLS, MPLS-TP, Ethernet.

Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.

Fig. 6 is the structured flowchart according to the packet switching device of the embodiment of the invention, and this device comprises selects module 62, first carrier module 64, below said structure is described in detail:

Select module 62, be used for Member Link according to the bandwidth parameter selective polymerization link of service flow; Carrier module 64 is connected to and selects module 62, is used for service flow is carried on the Member Link of selecting module 62 to select.

Fig. 7 is the preferred construction block diagram according to the packet switching device of the embodiment of the invention, below said structure is described in detail:

Select module 62 to comprise: comparison module 622, first determination module 624, second determination module 626, the 3rd determination module 628.

Comparison module 622 under the situation of the new service flow of configuration, is used for the bandwidth of not bandwidth reserved and new service flow of all Member Links that disposed of comparison aggregated links; First determination module 624, be connected to comparison module 622, the comparative result that is used for comparison module 622 be aggregated links disposed the not bandwidth reserved of all Member Links all less than the bandwidth of new service flow, then determine in the aggregated links configuration service stream adjust; Second determination module 626, be connected to comparison module 622, the comparative result that is used for comparison module 622 is that the not bandwidth reserved of at least one Member Link of existence of aggregated links is greater than the bandwidth of new service flow, then determine the service flow that has disposed in the aggregated links is not adjusted, the 3rd determination module 628, in the aggregated links maintenance process,, determine the service flow that has disposed in the aggregated links is adjusted if it is unbalanced to be used for the load of aggregated links.

Carrier module 64 comprises: first configuration module 642, adjusting module 644, second configuration module 646, the 3rd configuration module 648.

First configuration module 642, be connected to first determination module 624, under the situation that the service flow that has disposed in first determination module 624 is determined aggregated links is not adjusted, be used for new service flow is carried on Member Link, wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow; Adjusting module 644, be connected to second determination module 626, under the situation that the service flow that has disposed in second determination module 626 is determined aggregated links is carried out, be used for adjusting some or all of in all service flow that aggregated links disposed, make the not bandwidth reserved of at least one Member Link more than or equal to the bandwidth of new service flow in the position of Member Link; Second configuration module 646 is connected to adjusting module 644, is used for just new service flow and is carried on adjusting module 644 adjusted Member Links, and wherein, the not bandwidth reserved of Member Link is more than or equal to the bandwidth of new service flow; The 3rd configuration module 648 is used for adjusting some or all of in the position of Member Link in all service flow that aggregated links disposed, makes aggregated links reach load balancing.

Need to prove that the packet switching device of describing among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, do not repeat them here.

By the present invention, according to the bandwidth requirement of different service flow, realize the link aggregation function, and can in the aggregated links maintenance process, optimize the distribution of current aggregated links resource and use.Its significant advantage is: the link aggregation function that can realize service-oriented stream according to the corresponding configuring request of the network planning, subscriber signaling request etc., guarantee the service quality of service flow, and can reach purposes such as real-time optimization aggregated links resource in the Member Link position by the existing stream of configuration service of dynamic adjustment in the aggregated links maintenance process, it seems very useful in the packet network with traffic engineering demand.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

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 (13)

1. the collocation method of an aggregating link service flow is characterized in that, comprising:
Member Link according to the bandwidth parameter selective polymerization link of service flow; And described service flow is carried on the Member Link of described selection.
2. method according to claim 1 is characterized in that, comprises according to the Member Link of the bandwidth parameter selective polymerization link of service flow:
Under the situation of the new service flow of configuration, the not bandwidth reserved of all Member Links that disposed of more described aggregated links and the bandwidth of described new service flow;
If the not bandwidth reserved of all Member Links that disposed of described aggregated links is then determined the service flow that has disposed in the described aggregated links is adjusted all less than the bandwidth of described new service flow; Otherwise determine the service flow that has disposed in the described aggregated links is not adjusted.
3. method according to claim 2 is characterized in that, described service flow is carried on the described Member Link comprise:
If determine the service flow that has disposed in the described aggregated links is not adjusted, then described new service flow is carried on the described Member Link, wherein, the not bandwidth reserved of described Member Link is more than or equal to the bandwidth of described new service flow.
4. method according to claim 3 is characterized in that, described new service flow is carried on the described Member Link comprise:
According to the load balancing principle of described aggregated links, described new service flow is carried on the described Member Link, wherein, the not bandwidth reserved of described Member Link is more than or equal to the bandwidth of described new service flow.
5. method according to claim 2 is characterized in that, described service flow is carried on the described Member Link comprise:
If determine the service flow that has disposed in the described aggregated links is adjusted, then adjust some or all of in all service flow that disposed in the described aggregated links, make the not bandwidth reserved of at least one described Member Link more than or equal to the bandwidth of described new service flow in the position of described Member Link;
Described new service flow is carried on the adjusted described Member Link, and wherein, the not bandwidth reserved of described Member Link is more than or equal to the bandwidth of described new service flow.
6. method according to claim 5 is characterized in that, described new service flow is carried on the adjusted described Member Link comprise:
According to the load balancing principle of described aggregated links, described new service flow is carried on the adjusted described Member Link, wherein, the not bandwidth reserved of described Member Link is more than or equal to the bandwidth of described new service flow.
7. method according to claim 1 is characterized in that, comprises according to the Member Link of the bandwidth parameter selective polymerization link of service flow:
In the aggregated links maintenance process,, determine the service flow that has disposed in the described aggregated links is adjusted if the load of described aggregated links is unbalanced.
8. method according to claim 7 is characterized in that, described service flow is carried on the described Member Link, comprising:
Adjust some or all of in all service flow that disposed in the described aggregated links, make described aggregated links reach load balancing in the position of described Member Link.
9. method according to claim 7 is characterized in that, it is one of following that described aggregated links maintenance process comprises:
Control plane adds described Member Link or deletes;
One or more service flow of the described aggregated links of process that described control plane will dispose are deleted from described aggregated links;
The webmaster request is carried out resource optimization to described aggregated links.
10. according to each described method of claim 1 to 9, it is characterized in that described service flow comprises: label switching path LSP, virtual LAN VLAN stream, media access control MAC stream, VLAN+MAC stream.
11. a packet switching device is characterized in that, comprising:
Select module, be used for Member Link according to the bandwidth parameter selective polymerization link of service flow;
Carrier module is used for described service flow is carried on the Member Link of described selection.
12. device according to claim 11 is characterized in that, selects module to comprise:
Comparison module under the situation of the new service flow of configuration, is used for the not bandwidth reserved of all Member Links that disposed of more described aggregated links and the bandwidth of described new service flow;
First determination module, if the not bandwidth reserved of all Member Links that disposed that is used for described aggregated links all less than the bandwidth of described new service flow, then determine in the described aggregated links configuration service stream adjust;
There is the bandwidth of the not bandwidth reserved of at least one described Member Link more than or equal to described new service flow in second determination module if be used for described aggregated links, then determines the service flow that has disposed in the described aggregated links is not adjusted;
The 3rd determination module in the aggregated links maintenance process, if it is unbalanced to be used for the load of described aggregated links, is determined the service flow that has disposed in the described aggregated links is adjusted.
13. device according to claim 11 is characterized in that, carrier module comprises:
First configuration module, be used under the situation that the service flow of determining described aggregated links has been disposed is not adjusted, described new service flow is carried on the described Member Link, and wherein, the not bandwidth reserved of described Member Link is more than or equal to the bandwidth of described new service flow;
Adjusting module, be used under the situation that the service flow of determining described aggregated links has been disposed is carried out, adjust some or all of in all service flow that disposed in the described aggregated links, make the not bandwidth reserved of at least one described Member Link more than or equal to the bandwidth of described new service flow in the position of described Member Link;
Second configuration module is carried on described new service flow on the adjusted described Member Link, and wherein, the not bandwidth reserved of described Member Link is more than or equal to the bandwidth of described new service flow;
The 3rd configuration module is adjusted some or all of in the position of described Member Link in all service flow that disposed in the described aggregated links, makes described aggregated links reach load balancing.
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