CN101651960A - Protection method and device of link condensation bandwidth based on LACP - Google Patents
Protection method and device of link condensation bandwidth based on LACP Download PDFInfo
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Abstract
The invention discloses a protection method and a device of a link aggregation bandwidth, and provides an easy and practical protection scheme for dynamically controlling the link aggregation bandwidth based on a link aggregation control protocol (LACP). The protection method comprises the following steps: firstly, starting a link aggregation process and configuring a minimum bandwidth of link aggregation; dynamically detecting an available bandwidth of link aggregation and comparing the available bandwidth with the configured minimum bandwidth; carrying out the protection processing of the link aggregation and sending out alarm information if the available bandwidth is smaller than the minimum bandwidth; and processing the link aggregation according to a normal flow and continuously, dynamically and repeatedly detecting the available bandwidth of a link and comparing the available bandwidth with the minimum bandwidth if the available bandwidth is larger than or equal to the minimum bandwidth. The invention avoids bandwidth congestion caused by that part of link aggregate to lead the bandwidth to fail to meet requirements.
Description
Technical field
The present invention relates to the ethernet communication technology, relate in particular to a kind of link aggregation bandwidth protection method and device based on the LACP agreement.
Background technology
Along with the growth of data business volume with to the raising of quality of service requirement, particularly at the convergence layer, the wall scroll physical link still is all can not satisfy instructions for use aspect the reliability in bandwidth, and the appearance of link aggregation technology has well solved this problem.So-called " link aggregation (Link Aggregation) " is that two or more data channels are combined into a single channel, and this channel occurs with the logical links of a single more high bandwidth.This link logically is an integral body, and the details of inner composition and transmission data is transparent to top service.After adopting link aggregation, the bandwidth of logical links has increased approximately (n-1) times, and here, n is the way of polymerization.In addition, behind the link aggregation, reliability also can improve greatly because, as long as have in the n bar link one can operate as normal, then this link just can be worked.The main effect of link aggregation is: the quantity according to the aggregation group middle port increases bandwidth, creates the transmission elasticity of link and realizes link redundancy backup.
(Link Aggregation Control Protocol is one of the main contents of IEEE802.3ad standard LACP) to Link Aggregation Control Protocol, has defined a kind of polymerization control mode of standard.Both sides' equipment of polymerization is by the protocol interaction aggregation information, according to both sides' parameter and state, automatically with the link aggregation of coupling transceive data together.After polymerization formed, switching equipment was safeguarded the aggregated links state, when both sides' configuration variation, adjusted or dismiss aggregated links automatically.The LACP agreement is the transmission of dependence information and state, rather than the transmission of order; (Link Aggregation ControlProtocol Data Unit LACPDUs) is sent to the opposite end by local terminal to aggregated links control protocol data cell, wherein comprises the information of opposite end known to the state of local terminal and the local terminal.The information that is comprised among the LACPDU can determine next step action of opposite end.Link aggregation has following condition: 1) port is in link normal condition (LinkUp); 2) speed of port is identical; 3) port is in full-duplex mode; 4) medium type of port is identical.
Below in conjunction with Fig. 1 prior art is introduced.As shown in Figure 1, CE inserts edge switch for the metropolitan area network user, and PE is a metropolitan area network Provider Edge access switch.The CE switch links to each other with the PE switch by link aggregation.The maximum bandwidth of supposing every link of Ethernet is 1Gbit/s, and the data flow maximum bandwidth between CE and the PE is 3Gbit/s, and minimum bandwidth is 2Gbit/s.In order to satisfy maximum bandwidth, then the rarest 3 links are participated in polymerization between CE and the PE.In order to guarantee reliability, used 4 link aggregations among Fig. 1, bandwidth is 1 * 4Gbit/s after the polymerization.When wherein any link is unusual for some reason, bandwidth all satisfies the maximum bandwidth requirement always between CE and the PE.
Yet prior art can not guarantee the minimum bandwidth of link aggregation.As Fig. 1, the minimum bandwidth of requirement is 2Gbit/s, and when 3 link aggregations between CE and PE broke down, remaining bandwidth had only 1Gbit/s, did not satisfy the minimum bandwidth requirement of 2Gbit/S.Thereby how the minimum bandwidth about link aggregation in the prior art ensures then do not have corresponding protection announcement and treatment mechanism.
Summary of the invention
Technical problem to be solved by this invention is, a kind of link aggregation bandwidth protection method and device based on the LACP agreement is provided, and solves when available bandwidth does not satisfy minimum bandwidth in the existing link aggregation technology, does not have the problem of corresponding protection treatment mechanism.
In order to address the above problem, the present invention proposes a kind of link aggregation bandwidth protection method, comprise the steps:
Start the link aggregation process, configuration link polymerization minimum bandwidth;
Detection of dynamic link aggregation available bandwidth, and available bandwidth and the minimum bandwidth that disposed compared:
Processing provides warning information simultaneously if available bandwidth, carries out the link aggregation protection less than minimum bandwidth;
If available bandwidth, is pressed the link aggregation normal flow more than or equal to minimum bandwidth and handled, the continuation dynamic circulation detects the link available bandwidth and compares with minimum bandwidth.
Described configuration link polymerization minimum bandwidth is meant the threshold value of a link aggregation minimum bandwidth of configuration.
The step that provides warning information is simultaneously handled in protection if available bandwidth, carries out link aggregation less than minimum bandwidth, is meant that whole link aggregation group quits work, and provides warning information simultaneously.
Described method further comprises: carrying out after the protection of described link aggregation handles, if the detection of dynamic available bandwidth during more than or equal to minimum bandwidth, recovers to adopt the link aggregation normal flow before the link aggregation protection is handled to handle.
Described warning information comprises link available bandwidth, link protection current state.
The present invention also provides a kind of link aggregation bandwidth protection device, comprising: link aggregation module, link aggregation minimum bandwidth configuration module, link aggregation bandwidth detection comparison module, link aggregation protection processing module, wherein:
The link aggregation module is used to realize link aggregation;
Link aggregation minimum bandwidth configuration module is used for the minimum bandwidth of configuration link polymerization;
Link aggregation bandwidth detection comparison module, be used for dynamically carrying out the detection of available bandwidth according to the link aggregation state of link aggregation module, the minimum bandwidth that available bandwidth and link aggregation minimum bandwidth configuration module are disposed compares, the available bandwidth of polymerization success link is informed link aggregation protection processing module with comparative result during less than the minimum bandwidth that disposed; Available bandwidth walks to continue the detection of dynamic available bandwidth during more than or equal to the minimum bandwidth that disposed;
Link aggregation protection processing module, be used for the available bandwidth of polymerization success link less than dispose during minimum bandwidth, link aggregation protected handles and send warning information.
The minimum bandwidth of described link aggregation minimum bandwidth configuration module configuration link polymerization is the threshold value of a minimum bandwidth of configuration.
Described link aggregation protection processing module, be used for the available bandwidth of polymerization success link less than dispose during minimum bandwidth, link aggregation protected to handle be meant that whole link aggregation group quits work, provide warning information simultaneously.
The described warning information that described link aggregation protection processing module provides comprises: link available bandwidth, link protection current state.
Described link aggregation bandwidth detection comparison module is the available bandwidth that calculates whole link aggregation according to the quantity of the effective status of aggregated links member interface.
Link aggregation bandwidth protection method of the present invention and device set in advance the minimum bandwidth threshold value, in the link aggregation process, and the available bandwidth of the aggregated links of detection of dynamic link aggregation success; Available bandwidth and minimum bandwidth threshold value that detection is obtained compare; carry out bandwidth protection control according to comparative result; when the available bandwidth of polymerization success link less than dispose during minimum bandwidth (threshold value), link aggregation protected handles and send warning information.Among the present invention link aggregation being protected processing, is link aggregation group to be quit work (down), after available bandwidth meets the demands (promptly more than or equal to the minimum bandwidth that is disposed) again, needs the preoperative normal flow of recovery and protection.The protection scheme of simple dynamic control link aggregate bandwidth provided by the invention can prevent that the part of links polymerization from breaking down and cause bandwidth not meet the demands, and causes congested.
Description of drawings
Fig. 1 is the schematic diagram of two switch participation link aggregations in the prior art;
Fig. 2 is the structural representation of link aggregate bandwidth protective device among the present invention;
Fig. 3 is the process chart of configuration smallest link polymerization available bandwidth among the present invention;
Fig. 4 is that the link aggregation available bandwidth detects and the protection process chart among the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The purpose of Ethernet link clustering is to increase bandwidth, IEEE, and Std802.3ad has detailed explanation to link aggregation method.The present invention is at LACP (Link Aggregation Control Protocol; Link Aggregation Control Protocol) on the agreement basis; a kind of protection scheme of simple dynamic control link aggregate bandwidth is provided; prevent that the part of links polymerization from breaking down and cause bandwidth not meet the demands, cause congested.
Basic ideas of the present invention are: set in advance the minimum bandwidth threshold value, and in the link aggregation process, the available bandwidth of the aggregated links of detection of dynamic link aggregation success; Available bandwidth and minimum bandwidth threshold value that detection is obtained compare, carry out bandwidth protection control according to comparative result, when the available bandwidth of polymerization success link less than dispose during minimum bandwidth (threshold value), link aggregation protected handles and send warning information; When the available bandwidth of polymerization success link during, walk normal LACP link aggregation flow process more than or equal to the minimum bandwidth that is disposed (threshold value).Described normal LACP link aggregation flow process is meant the flow process of introducing in the agreement " IEEE, Std802.3ad ", hereinafter to be referred as normal flow.
Among the present invention link aggregation being protected processing, is link aggregation group to be quit work (down), after available bandwidth meets the demands (promptly more than or equal to the minimum bandwidth that is disposed) again, needs the preoperative normal flow of recovery and protection.Also can adopt other protection processing mode.
Link aggregation bandwidth protection method of the present invention comprises the steps:
Step 1: start the link aggregation process, configuration link polymerization minimum bandwidth; In this step, the same configuration link polymerization with normal flow starts LACP and carries out link aggregation, and the present invention is applicable to all patterns of LACP: static schema and protocol mode.During configuration link polymerization minimum bandwidth, be minimum bandwidth threshold value of configuration.
Step 2: detection of dynamic link aggregation available bandwidth, and available bandwidth that detects and the minimum bandwidth threshold value that is disposed compared, if available bandwidth less than threshold value, forwards step 3 to, if available bandwidth more than or equal to threshold value, when meeting the demands, changes step 4
Step 3: carry out the link aggregation protection and handle, take link aggregation protection operation, a kind of optional protection among the present invention is operating as: whole link aggregation (group) quits work (down), provides warning information simultaneously.
Step 4: when available bandwidth meets the demands, walk normal flow, change step 2 dynamic circulation and detect link available bandwidth state.
Therefore, when the link aggregation available bandwidth does not meet the demands, when promptly available bandwidth is less than described minimum bandwidth threshold value, adopts the present invention that a kind of detections can be provided and protect processing mode.
As shown in Figure 2, shown link aggregation bandwidth protection device schematic diagram of the present invention, having comprised:
Link aggregation module, this link aggregation module be based on IEEE, the Std802.3ad agreement, and its function is same as the prior art, is used to realize link aggregation;
Link aggregation minimum bandwidth configuration module is used to dispose minimum bandwidth requirement, promptly disposes the minimum bandwidth threshold value;
Link aggregation bandwidth detection comparison module, be used for dynamically carrying out the detection and the calculating of available bandwidth according to the link aggregation state of link aggregation module, and the minimum bandwidth that available bandwidth and link aggregation minimum bandwidth configuration module are disposed compared, the available bandwidth of polymerization success link is informed link aggregation protection processing module with comparative result during less than the minimum bandwidth that is disposed (threshold value); Available bandwidth is walked normal flow during more than or equal to the minimum bandwidth that is disposed (threshold value);
Link aggregation protection processing module; be used for the available bandwidth of polymerization success link less than dispose during minimum bandwidth (threshold value); link aggregation is protected processing and sent warning information, and warning information comprises link available bandwidth, link protection current state.
The protection that described link aggregation protection processing module adopts is handled action and can be selected, and a kind of mode provided by the invention is: if the link aggregation available bandwidth does not meet the demands, and whole link aggregation group quit work (down).
The present invention is based on that the LACP link aggregation carries out, and when polymerization member LACP consults successfully, corresponding member interface state is defined as effectively (active); Other state thinks that polymerization is not successful, and corresponding member interface state is invalid (inactive) state.Active member's bandwidth is an available bandwidth.Link aggregation bandwidth detection comparison module can calculate the available bandwidth of whole link aggregation according to the active number of states of aggregated links member interface.
Below in conjunction with Fig. 3, Fig. 4 the enforcement of technical solution of the present invention is described in further detail.
As shown in Figure 3, the handling process that needs when disposing the smallest link aggregate bandwidth for the present invention specifically may further comprise the steps:
Step S301, by outside input, the minimum bandwidth (minBW) of configuration link polymerization (group).This parameter need be provided with according to application demand.
Step S302, calculating link aggregation group available bandwidth (useableBW).Concrete method can be that effectively the quantity of (active) multiply by single member port band width in physical acquisition according to member condition in the aggregated links.Polymerization member's active state can obtain according to standard LACP protocol state machine.
Step S303, comparison available bandwidth useableBW and configuration minimum bandwidth minBW value size, if available bandwidth changes step S304 more than or equal to the configuration minimum bandwidth, the person does not change step S305.
Step S304, press the link aggregation handling process and handle, but concrete reference mark agreement IEEE, and Std802.3ad is not herein in detailed introduction.
Step S305, carry out link aggregation protection and handle, and provide warning information.
The handling process that Fig. 3 has needed when having introduced the configuration of link aggregation minimum bandwidth, the flow process after the configuration specifically may further comprise the steps referring to Fig. 4:
Step S401, link aggregation bandwidth detection, concrete, according to the Interface status of LACP protocol state machine and member port, whether detection of dynamic link aggregation available bandwidth changes.
Step S402, judge whether the link aggregation available bandwidth changes, change step S403 if change, the person does not change step S404.
Step S403, to keep original state constant.Have two states herein: state one is a normal condition; State two is states of handling through link aggregation protection processing module.Changeing step S401 continues to detect.
Step S404, calculating link aggregation available bandwidth useableBW.Concrete method can multiply by single member port band width in physical according to member active quantity in the aggregated links and obtain.
Step S405, comparison available bandwidth useableBW and configuration minimum bandwidth minBW value size, if available bandwidth changes step S406 more than or equal to the configuration minimum bandwidth, the person does not change step S407.
Step S406, announcement link aggregation protection processing module satisfy the bandwidth threshold requirement, and link aggregation normal (UP) is if the link aggregation state changes then provides warning information.Changeing step S401 continues to detect.
Step S407, link aggregation available bandwidth do not satisfy threshold value, and link aggregation down is if the link aggregation state changes then provides warning information.Changeing step S401 continues to detect.
Link aggregation bandwidth protection method of the present invention; go for the terminal device of link aggregation; after local terminal equipment has adopted link aggregation bandwidth protection scheme; opposite end link aggregation minimum bandwidth threshold value needs to be provided with consistent with local terminal minimum bandwidth threshold value; not so link aggregation up in two ends can appear, the situation of a down.The device of the link aggregation bandwidth protection of opposite equip., and it is consistent with the described technology contents of top Fig. 2 to 4 with flow process that step is set.The technical scheme that detection when to sum up, the invention provides a kind of link aggregation available bandwidth and do not meet the demands, announcement and protection are handled.
The above is embodiments of the 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 the claim scope of the present invention.
Claims (10)
1, a kind of link aggregation bandwidth protection method is characterized in that, comprises the steps:
Start the link aggregation process, configuration link polymerization minimum bandwidth;
Detection of dynamic link aggregation available bandwidth, and available bandwidth and the minimum bandwidth that disposed compared:
Processing provides warning information simultaneously if available bandwidth, carries out the link aggregation protection less than minimum bandwidth;
If available bandwidth, is pressed the link aggregation normal flow more than or equal to minimum bandwidth and handled, the continuation dynamic circulation detects the link available bandwidth and compares with minimum bandwidth.
2, link aggregation bandwidth protection method as claimed in claim 1 is characterized in that,
Described configuration link polymerization minimum bandwidth is meant the threshold value of a link aggregation minimum bandwidth of configuration.
3, link aggregation bandwidth protection method as claimed in claim 1 is characterized in that,
The step that provides warning information is simultaneously handled in protection if available bandwidth, carries out link aggregation less than minimum bandwidth, is meant that whole link aggregation group quits work, and provides warning information simultaneously.
4, link aggregation bandwidth protection method as claimed in claim 3 is characterized in that described method further comprises:
Carrying out after the protection of described link aggregation handles, if the detection of dynamic available bandwidth during more than or equal to minimum bandwidth, recovers to adopt the link aggregation normal flow before the link aggregation protection is handled to handle.
5, as claim 1 or 3 described link aggregation bandwidth protection methods, it is characterized in that,
Described warning information comprises link available bandwidth, link protection current state.
6, a kind of link aggregation bandwidth protection device is characterized in that, comprising: link aggregation module, link aggregation minimum bandwidth configuration module, link aggregation bandwidth detection comparison module, link aggregation protection processing module, wherein:
The link aggregation module is used to realize link aggregation;
Link aggregation minimum bandwidth configuration module is used for the minimum bandwidth of configuration link polymerization;
Link aggregation bandwidth detection comparison module, be used for dynamically carrying out the detection of available bandwidth according to the link aggregation state of link aggregation module, the minimum bandwidth that available bandwidth and link aggregation minimum bandwidth configuration module are disposed compares, the available bandwidth of polymerization success link is informed link aggregation protection processing module with comparative result during less than the minimum bandwidth that disposed; Available bandwidth walks to continue the detection of dynamic available bandwidth during more than or equal to the minimum bandwidth that disposed;
Link aggregation protection processing module, be used for the available bandwidth of polymerization success link less than dispose during minimum bandwidth, link aggregation protected handles and send warning information.
7, link aggregation bandwidth protection device as claimed in claim 6 is characterized in that,
The minimum bandwidth of described link aggregation minimum bandwidth configuration module configuration link polymerization is the threshold value of a minimum bandwidth of configuration.
8, link aggregation bandwidth protection device as claimed in claim 6 is characterized in that,
Described link aggregation protection processing module, be used for the available bandwidth of polymerization success link less than dispose during minimum bandwidth, link aggregation protected to handle be meant that whole link aggregation group quits work, provide warning information simultaneously.
9, as claim 6 or 8 described link aggregation bandwidth protection devices, it is characterized in that,
The described warning information that described link aggregation protection processing module provides comprises: link available bandwidth, link protection current state.
10, as each described link aggregation bandwidth protection device in the claim 6 to 8; it is characterized in that; described link aggregation bandwidth detection comparison module is the available bandwidth that calculates whole link aggregation according to the quantity of the effective status of aggregated links member interface.
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| CN200910173901A CN101651960A (en) | 2009-09-17 | 2009-09-17 | Protection method and device of link condensation bandwidth based on LACP |
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| CN101841487A (en) * | 2010-05-24 | 2010-09-22 | 中兴通讯股份有限公司 | Configuration method for aggregating link service flow and packet switching device |
| CN101977145A (en) * | 2010-10-20 | 2011-02-16 | 中兴通讯股份有限公司 | Method for forwarding aggregated link service flow and system thereof |
| CN101984586A (en) * | 2010-11-03 | 2011-03-09 | 中兴通讯股份有限公司 | Method and device for monitoring multiple links |
| CN102014019A (en) * | 2010-11-04 | 2011-04-13 | 中兴通讯股份有限公司 | Aggregated link switching method and device |
| CN102624564A (en) * | 2012-03-13 | 2012-08-01 | 中兴通讯股份有限公司 | Collocation method and device for port state |
| CN102868640A (en) * | 2012-04-12 | 2013-01-09 | 华为技术有限公司 | Method, device and system for increasing available bandwidth of aggregation link |
| CN104253760A (en) * | 2014-09-11 | 2014-12-31 | 深圳市深信服电子科技有限公司 | Network congestion control method and device |
| CN104391812A (en) * | 2014-12-02 | 2015-03-04 | 联想(北京)有限公司 | Communication method and first electronic equipment |
| US9270524B2 (en) | 2011-10-12 | 2016-02-23 | Huawei Technologies Co., Ltd. | Method and device for LACP link switching and data transmission |
| US9369375B2 (en) | 2013-12-10 | 2016-06-14 | Red Hat, Inc. | Link-layer level link aggregation autoconfiguration |
| WO2018001230A1 (en) * | 2016-06-30 | 2018-01-04 | 中兴通讯股份有限公司 | Dynamic link aggregation implementation method and device and computer storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101841487A (en) * | 2010-05-24 | 2010-09-22 | 中兴通讯股份有限公司 | Configuration method for aggregating link service flow and packet switching device |
| CN101977145B (en) * | 2010-10-20 | 2015-04-01 | 中兴通讯股份有限公司 | Method for forwarding aggregated link service flow and system thereof |
| CN101977145A (en) * | 2010-10-20 | 2011-02-16 | 中兴通讯股份有限公司 | Method for forwarding aggregated link service flow and system thereof |
| CN101984586A (en) * | 2010-11-03 | 2011-03-09 | 中兴通讯股份有限公司 | Method and device for monitoring multiple links |
| WO2012058888A1 (en) * | 2010-11-03 | 2012-05-10 | 中兴通讯股份有限公司 | Method and device for monitoring multiple links |
| CN102014019B (en) * | 2010-11-04 | 2015-12-16 | 中兴通讯股份有限公司 | Aggregated link switching method and device |
| WO2012058895A1 (en) * | 2010-11-04 | 2012-05-10 | 中兴通讯股份有限公司 | Method and device for switching aggregation links |
| CN102014019A (en) * | 2010-11-04 | 2011-04-13 | 中兴通讯股份有限公司 | Aggregated link switching method and device |
| US9270524B2 (en) | 2011-10-12 | 2016-02-23 | Huawei Technologies Co., Ltd. | Method and device for LACP link switching and data transmission |
| CN102624564A (en) * | 2012-03-13 | 2012-08-01 | 中兴通讯股份有限公司 | Collocation method and device for port state |
| CN102624564B (en) * | 2012-03-13 | 2018-05-18 | 中兴通讯股份有限公司 | The collocation method and device of a kind of port status |
| CN102868640A (en) * | 2012-04-12 | 2013-01-09 | 华为技术有限公司 | Method, device and system for increasing available bandwidth of aggregation link |
| CN102868640B (en) * | 2012-04-12 | 2015-06-03 | 华为技术有限公司 | Method, device and system for increasing available bandwidth of aggregation link |
| US9369375B2 (en) | 2013-12-10 | 2016-06-14 | Red Hat, Inc. | Link-layer level link aggregation autoconfiguration |
| CN104253760B (en) * | 2014-09-11 | 2018-04-06 | 深信服科技股份有限公司 | Method for controlling network congestion and device |
| CN104253760A (en) * | 2014-09-11 | 2014-12-31 | 深圳市深信服电子科技有限公司 | Network congestion control method and device |
| CN104391812A (en) * | 2014-12-02 | 2015-03-04 | 联想(北京)有限公司 | Communication method and first electronic equipment |
| CN104391812B (en) * | 2014-12-02 | 2018-12-14 | 联想(北京)有限公司 | A kind of communication means and the first electronic equipment |
| WO2018001230A1 (en) * | 2016-06-30 | 2018-01-04 | 中兴通讯股份有限公司 | Dynamic link aggregation implementation method and device and computer storage medium |
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Application publication date: 20100217 |