CN103401801A - Method and device for realizing dynamic load balance - Google Patents
Method and device for realizing dynamic load balance Download PDFInfo
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- CN103401801A CN103401801A CN2013103426622A CN201310342662A CN103401801A CN 103401801 A CN103401801 A CN 103401801A CN 2013103426622 A CN2013103426622 A CN 2013103426622A CN 201310342662 A CN201310342662 A CN 201310342662A CN 103401801 A CN103401801 A CN 103401801A
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Abstract
The invention discloses a method and a device for realizing dynamic load balance. On the basis of the static link aggregation, the judgment of the port flow load is added, and a message outlet is selected by combining a Hash result and a port load. The method comprises the following steps: transmitting service flow into a link aggregation group for aggregating, calculating according to message information in the service flow by using a Hash algorithm to obtain a static Hash value, selecting internal flow according to the obtained Hash value, judging whether the selected internal flow is in an activated state or not, selecting a port of which the flow load is lowest for serving as a message transmitting outlet if the selected internal flow is a non-activated state, correlating the outlet with the selected internal flow, and forwarding a message in the service flow from a selected link outlet of which the flow load is lowest; and if the selected internal flow is in an activated state, directly forwarding the message in the service flow from the outlet correlated with the selected internal flow. According to the method and the device, dynamic load balance can be realized, and the problem of unbalance flow load of members in the same link aggregation group is solved effectively.
Description
Technical field
The present invention relates to data communication field, especially relate to a kind of implementation method and device of dynamic load leveling.
Background technology
Along with the development of ethernet technology, Ethernet has been widely used in enterprise network, and has occupied most of enterprise network market.Ethernet device has also obtained develop rapidly and extensive use thereupon.
, because port number and the forwarding bandwidth of every ethernet device are limited,, in order to set up than macroreticular, just need to use many ethernet devices, so that the larger network bandwidth and the more network port to be provided.
Link aggregation is based on the technology of IEEE802.3ad standard, and it aggregates into a logical links with many physical links, thereby a more link of bandwidth is provided.Link aggregation has improved link-attached stability, when the part physical link in logical links breaks down, can not cause the whole piece logical links unavailable.
Usually we, by Hash mapping, realize load balancing between the stacking link of the physics in logical links.Its concrete grammar is: according to some information and the hash algorithm in message, calculate a cryptographic Hash, then pick out a physical link according to this cryptographic Hash in logical links, then from then on link forwarding of message, therefore realized that on network, flow is distributed to each physical link equably.The cryptographic Hash of all messages of same stream should be the same simultaneously, thereby can be mapped on the same physical link, has prevented the wrong suitable problem of message in same stream.
Can reach the effect of load balancing by the link aggregation of Hash mapping mode, but be static routing all the time, message from which port is gone out and according to the result of calculation of Hash, is decided fully.When hash algorithm is determined, message is determined, exports also and just determines thereupon.And for the flow of this outlet, do not go to be concerned about, will occur that like this blocking up may appear in some link, packet loss even, even there is no a flow and some link load is still very light, namely there is the even problem of mass flow discrepancy in link aggregation group.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of implementation method and device of dynamic load leveling is provided, in conjunction with Hash result and port load, select outlet, realized that the dynamic load equilibrium of aggregated links group is shared.
For achieving the above object, the present invention proposes following technical scheme: a kind of implementation method of dynamic load leveling, Business Stream sends in link aggregation group and carries out polymerization, calculate a cryptographic Hash by hash algorithm, according to the cryptographic Hash that obtains, select inner stream, whether the inside stream that judgement is selected is in state of activation, if unactivated state, select the port of flow load minimum as outlet, the inside of described outlet and selection stream is related after, the message in Business Stream forwards from this outlet; If state of activation, directly forward the message in Business Stream from the outlet of associated.
Preferably, described hash algorithm calculates according to the message information in Business Stream, obtains cryptographic Hash.
Described message information comprises the Mac address, source of message, purpose Mac address, VLAN, IP address.
Before the outlet of selecting the flow load minimum, with the setup of attribute of inside stream, be dynamic.
Select the method for the minimum outlet of flow load to comprise: according to the equipping rules of link aggregation, with the load feedback of port to link aggregation group, the load that link aggregation group is come according to feedback is divided into several different grades with port, selects the member of port flow load minimum as outlet.
When there being new service flow to arrive time that link aggregation group or industry section stream interrupts during greater than time interval of setting, can the salty load balancing that newly carries out in opposite end, and the member who selects port flow load minimum is as outlet.
Another object of the present invention also is to disclose a kind of implement device of dynamic load leveling, comprise the link aggregation unit, arithmetic element, state judging unit, selected cell and packet sending unit, the Business Stream that described link aggregation unit is used for receiving carries out polymerization; Described arithmetic element is used for Business Stream is carried out Hash operation, and according to the cryptographic Hash that obtains, selects inner stream; Described state judging unit is used for judging whether described inner stream is in state of activation; Described selected cell is used for selecting the port of flow load minimum, as message link, exports; Described packet sending unit is related with the inside stream of selection with described chain way outlet, and the message in Business Stream is forwarded from this outlet.
Described arithmetic element is carried out Hash calculation according to the message information in Business Stream.
Described message information comprises the Mac address, source of message, purpose Mac address, VLAN, IP address.
Described selected cell is according to the equipping rules of link aggregation, and to link aggregation group, the load that link aggregation group is come according to feedback is divided into several different grades with port with the load feedback of port, selects the member of port flow load minimum as outlet; When there being new service flow to arrive time that link aggregation group or industry section stream interrupts during greater than time interval of setting, selected cell can opposite end is salty newly carries out load balancing, and the member who reselects outbound port flow load minimum is as outlet.
Beneficial effect of the present invention is: increased the judgement of port flow on the basis of static link polymerization, can realize dynamic load leveling, effectively avoided same link polymerization group member's the unbalanced problem of flow load, the very light even appearance of the very heavy flow load that packet loss even occurs, have of the flow load that namely has is unloaded.
Description of drawings
Fig. 1 is the schematic flow sheet of the implementation method of dynamic load leveling of the present invention;
Fig. 2 is the structural representation of the implement device of dynamic load leveling of the present invention;
Embodiment
Below in conjunction with accompanying drawing of the present invention, the technical scheme of the embodiment of the present invention is carried out clear, complete description.
The implementation method of disclosed dynamic load leveling and device, increased the judgement to the port flow load on the basis of static link polymerization, select the chain way outlet of the lightest port of flow load as message, realizes dynamic load leveling.
As shown in Figure 1, the implementation method of a kind of dynamic load leveling that the present invention discloses, comprising: Business Stream sends in link aggregation group and carries out polymerization; Carry out Hash operation according to the message information in Business Stream, calculate a static Hashing value, according to the cryptographic Hash that obtains, select corresponding inside stream, and setup of attribute that should inside stream is dynamic; Whether the inside stream that judgement is selected is in state of activation, if unactivated state, equipping rules according to link aggregation, with the load feedback of port to link aggregation group, the load that link aggregation group is come according to feedback is divided into several different grades with port, select the member of port flow load minimum as outlet, after the inside of described outlet and selection stream is related, message in Business Stream forwards from this outlet, if state of activation, directly forward the message in Business Stream from the outlet of associated.
In the situation that interrupting does not appear in the inside of selecting stream, the chain way outlet of selection can not change, and avoids the situation of the Business Stream order unrest that occurs that frequent switching outlet causes; When there being new service flow to arrive time that link aggregation group or Business Stream interrupt while greater than the situation of certain time interval, occurring, can repartition port according to the port load, and again compare, still select the lightest port of flow load and export as message link.
Message information comprises the Mac address, source of message, purpose Mac address, and VLAN, IP address, hash algorithm calculates cryptographic Hash according to message information.
The present invention has also disclosed a kind of implement device of dynamic load leveling, as shown in Figure 2, comprises the link aggregation unit, arithmetic element, state judging unit, selected cell and packet sending unit.The link aggregation unit is used for that Business Stream is carried out polymerization and forms a logical links.Arithmetic element is according to the message information in Business Stream, and utilizes hash algorithm to calculate a static Hashing value, thereby according to cryptographic Hash, selects inner stream, and the setup of attribute of inner stream is dynamic.
Whether the inside stream that the state judging unit is used for the judgement selection is in state of activation, if unactivated state, the message in Business Stream is sent to selected cell, if state of activation directly forwards the message in Business Stream from the outlet of associated.
Selected cell is used for the equipping rules according to link aggregation, and to link aggregation group, the load that link aggregation group is come according to feedback is divided into several different grades with port with the load feedback of port, selects the member of port flow load minimum as outlet.When there being new service flow to arrive time that link aggregation group or industry section stream interrupts during greater than time interval of setting, selected cell can opposite end is salty newly carries out load balancing, and the member who reselects outbound port flow load minimum is as outlet.
Packet sending unit is used for chain way outlet and the inside stream of selection are carried out related, and message is forwarded from the lightest chain way outlet of flow load of selecting.
Technology contents of the present invention and technical characterictic have disclosed as above; yet those of ordinary skill in the art still may be based on teaching of the present invention and announcements and are done all replacement and modifications that does not deviate from spirit of the present invention; therefore; protection range of the present invention should be not limited to the content that embodiment discloses; and should comprise various do not deviate from replacement of the present invention and modifications, and by the present patent application claim, contained.
Claims (10)
1. the implementation method of a dynamic load leveling, it is characterized in that, Business Stream sends in link aggregation group and carries out polymerization, calculate cryptographic Hash by hash algorithm, according to the cryptographic Hash that obtains, select inner stream, whether the inside stream that judgement is selected is in state of activation, if unactivated state, select the port of flow load minimum as outlet, the inside of described outlet and selection stream is related after, the message in Business Stream forwards from this outlet; If state of activation, directly forward the message in Business Stream from the outlet of associated.
2. the implementation method of dynamic load leveling according to claim 1, is characterized in that, described hash algorithm calculates according to the message information in Business Stream, obtains described cryptographic Hash.
3. the implementation method of dynamic load leveling according to claim 2, is characterized in that, described message information comprises the Mac address, source of message, purpose Mac address, VLAN, IP address.
4. the implementation method of dynamic load leveling according to claim 1, is characterized in that, before the outlet of selecting the flow load minimum, with the setup of attribute of inside stream, is dynamic.
5. the implementation method of dynamic load leveling according to claim 1, it is characterized in that, select the method for the minimum outlet of flow load to comprise: according to the equipping rules of link aggregation, with the load feedback of port to link aggregation group, the load that link aggregation group is come according to feedback is divided into several different grades with port, selects the member of port flow load minimum as outlet.
6. the implementation method of dynamic load leveling according to claim 1, it is characterized in that, when there being new service flow to arrive time that link aggregation group or industry section stream interrupts during greater than time interval of setting, the salty load balancing that newly carries out in meeting opposite end, and the member of selection port flow load minimum is as outlet.
7. the implement device of a dynamic load leveling, is characterized in that, comprises the link aggregation unit, arithmetic element, and the state judging unit, selected cell and packet sending unit, the Business Stream that described link aggregation unit is used for receiving carries out polymerization; Described arithmetic element is used for Business Stream is carried out Hash operation, and according to the cryptographic Hash that obtains, selects inner stream; Described state judging unit is used for judging whether described inner stream is in state of activation; Described selected cell is used for selecting the port of flow load minimum, as message link, exports; Described packet sending unit is related with the inside stream of selection with described chain way outlet, and the message in Business Stream is forwarded from this outlet.
8. the implement device of dynamic load leveling according to claim 7, is characterized in that, described arithmetic element is carried out Hash calculation according to the message information in Business Stream.
9. the implement device of dynamic load leveling according to claim 8, is characterized in that, described message information comprises the Mac address, source of message, purpose Mac address, VLAN, IP address.
10. the implement device of dynamic load leveling according to claim 7, it is characterized in that, described selected cell is according to the equipping rules of link aggregation, with the load feedback of port to link aggregation group, the load that link aggregation group is come according to feedback is divided into several different grades with port, selects the member of port flow load minimum as outlet; When there being new service flow to arrive time that link aggregation group or industry section stream interrupts during greater than time interval of setting, described selected cell can opposite end is salty newly carries out load balancing, and the member who reselects outbound port flow load minimum is as outlet.
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| CN104683255A (en) * | 2013-11-29 | 2015-06-03 | 华为技术有限公司 | Load sharing balance method and device for physical ports, and link aggregation system |
| CN105471761A (en) * | 2015-08-07 | 2016-04-06 | 北京汉柏科技有限公司 | Exchange equipment load adjustment method and device |
| CN106341336A (en) * | 2016-08-29 | 2017-01-18 | 锐捷网络股份有限公司 | Method and device for forwarding message via aggregate port (AP) |
| CN106506394A (en) * | 2016-11-21 | 2017-03-15 | 浙江宇视科技有限公司 | A kind of load-balancing method, system and device |
| CN106664258A (en) * | 2014-08-29 | 2017-05-10 | 柏思科技有限公司 | Methods and systems for transmitting packets through an aggregated connection |
| CN106656812A (en) * | 2016-12-13 | 2017-05-10 | 北京锐安科技有限公司 | Mapping table constructing method, shunting method of shunting device and corresponding devices |
| CN107528711A (en) * | 2016-06-22 | 2017-12-29 | 华为技术有限公司 | A kind of data transmission method, device and network element |
| CN107566267A (en) * | 2016-06-30 | 2018-01-09 | 中兴通讯股份有限公司 | A kind of message forwarding method and device based on aggregated links |
| CN107592272A (en) * | 2017-10-17 | 2018-01-16 | 盛科网络（苏州）有限公司 | A kind of method and device that load balancing is carried out based on source IP address |
| CN108112268A (en) * | 2015-04-30 | 2018-06-01 | 亚马逊技术有限公司 | Management and the relevant load balancer of automatic expanded set |
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| CN111356181A (en) * | 2020-02-25 | 2020-06-30 | 杭州迪普信息技术有限公司 | Flow forwarding method and device, network equipment and computer readable storage medium |
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| CN114285790A (en) * | 2021-12-21 | 2022-04-05 | 天翼云科技有限公司 | Data processing method and device, electronic equipment and computer readable storage medium |
| WO2023168657A1 (en) * | 2022-03-10 | 2023-09-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for selecting lag port for ip flow |
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Application publication date: 20131120 |