CN104954261A - Method and system for forwarding data by flow tables - Google Patents
Method and system for forwarding data by flow tables Download PDFInfo
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- CN104954261A CN104954261A CN201510274691.9A CN201510274691A CN104954261A CN 104954261 A CN104954261 A CN 104954261A CN 201510274691 A CN201510274691 A CN 201510274691A CN 104954261 A CN104954261 A CN 104954261A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
Abstract
The invention provides a method and a system for forwarding data by flow tables. According to the method, the forwarding system presets a virtual flow path comprising at least one flow table according to the business type of the data; a virtual flow path is selected according to the business type of received data, a next virtual flow path is selected according to values, acquired during flow of the received data in the selected virtual flow path, of the flow tables, and until the attribute of the last flow table in the selected virtual flow path is non-jumpable, the received data are forwarded according to the values of the flow tables in the last virtual flow path. The method and the system have the advantages that repetitive operations, of repeatedly outputting the data via a physical output port and returning the data to a physical input port, of existing OpenFlow switches can be avoided effectively, and utilization efficiency of the physical ports is improved.
Description
Technical field
The present invention relates to a kind of data retransmission technology, particularly relate to a kind of method and system utilizing stream table forwarding data.
Background technology
OpenFlow is the new network exchange model of a kind of network enabled innovation research that Stanford Univ USA proposed in 2007.The controlling functions of the network equipment is separated with forwarding capability by one of design object of OpenFlow exactly, and then is all focused on by controlling functions on long-range controller and complete.And OpenFlow switch is only responsible for doing simple data retransmission at a high speed in this locality.In the running of OpenFlow switch, the foundation of its data retransmission is exactly flow table (flow table).So-called stream table, can be deemed to be the one of OpenFlow to the data retransmission function of the network equipment abstract in fact.
In legacy network devices, TCAM (ternary content addressable memory three-state content addressing memory) is mainly used in FIB, MAC, MPLS Lable and ACL and shows.Because the matching field length of each table differs, so can design respectively, and there is heap(ed) capacity restriction to reaching minimum expense.And in OpenFlow exchanges, no longer distinguish shorter FIB, MAC, MPLS Lable of matching length and show and longer ACL table, and adopt the stream list item record with maximum length to replace without exception.For OpenFlow v1.0, the matching field length of stream table reaches 252, and general IPv4 RIB TCAM matching field length only has 60 to 80, and its expense adds more than three times.
In order to reduce stream table expense, OpenFlow v1.1 devises multilevel flow table, carries out feature extraction by stream table, and then matching process is resolved into multiple step, forms the processing form of streamline, thus reduces total stream table record number.But the actual physics of the multilevel flow table more than three grades realizes, and by chip complexity, the impact of the factors such as cost, feasibility is lower.The most multithread table progression realized at present is three grades.
Along with the increase of the data complexity transmitted in network, OpenFlow switch is when resolving with nested data (as QinQ data), often resolve the nested physical input port that just next layer sub-data must be returned again this OpenFlow switch from the physical output port of described OpenFlow switch of one deck, to realize the nested parsing of lower one deck.The input and output of redundancy, cause the resource of the physical port of OpenFlow switch to go short of.In order to solve the problem, need to improve prior art.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of method and system utilizing stream table forwarding data, for solving the problem that cannot utilize the resource of OpenFlow switch in prior art efficiently.
For achieving the above object and other relevant objects, the invention provides a kind of method utilizing stream table forwarding data, comprising: preset the virtual circulation path be made up of at least one stream table according to the type of service of data; A virtual circulation path is selected according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, then according to the value of each stream table in last virtual circulation path described, received data are forwarded.
Preferably, the mode that the described type of service according to data presets the virtual circulation path be made up of at least one stream table comprises: provide one for the configuration interface of incoming traffic type and stream table, the design operation in the type of service of carrying out in described configuration interface according to user and corresponding virtual circulation path, generates a virtual circulation path.
Preferably, select the step in a virtual circulation path in the described type of service according to received data before, also comprise: for received data open up a buffer area, by received data stored in described buffer area.
Preferably, the described type of service according to received data selects the mode in a virtual circulation path to comprise: according to preset each type of service priority from high to low, successively by virtual for the data corresponding selection in described buffer area one circulation path.
Preferably, the port for forwarding data is comprised in described virtual circulation path, corresponding, a virtual circulation path is being selected according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, in the process then according to the value of each stream table in last virtual circulation path described, received data forwarded, described method also comprises: according to the scheduling strategy preset, to need to use same stream table in respective virtual circulation path, and/or the different pieces of information of port is dispatched.
Based on above-mentioned purpose, the present invention also provides a kind of system utilizing stream table forwarding data, comprising: preset unit, for presetting the virtual circulation path be made up of at least one stream table according to the type of service of data; Retransmission unit, for selecting a virtual circulation path according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, then according to the value of each stream table in last virtual circulation path described, received data are forwarded.
Preferably, described default unit is for providing one for the configuration interface of incoming traffic type and stream table, and the design operation in the type of service of carrying out in described configuration interface according to user and corresponding virtual circulation path, generates a virtual circulation path.
Preferably, described system also comprises: buffer unit, before selecting a virtual circulation path at described retransmission unit according to the type of service of received data, for received data open up a buffer area, by received data stored in described buffer area.
Preferably, described retransmission unit also for according to preset each type of service priority from high to low, successively by virtual for the data corresponding selection in described buffer area one circulation path.
Preferably, the port for forwarding data is comprised in described virtual circulation path, corresponding, be that multiple data are carried out in the process of forward process at described retransmission unit, described system also comprises: scheduling unit, for according to the scheduling strategy preset, will need to use the different pieces of information of same stream table and/or port to dispatch in respective virtual circulation path.
As mentioned above, the method and system utilizing stream table forwarding data of the present invention, there is following beneficial effect: by arranging virtual circulation path according to type of service, can be distinguished with nested data and non-nested data, and the nested virtual circulation path of every one deck is set for the type of service of nested data, and determine the nested corresponding virtual circulation path of lower one deck according to the value obtained stream table matched data each in last virtual circulation path, and directly go to respective virtual circulation path, so, existing OpenFlow switch can be effectively avoided to need repeatedly data to be exported the repetitive operation returning physical input port again from physical output port, improve the service efficiency of physical port, in addition, because OpenFlow switch can process many virtual circulation paths simultaneously, and each virtual circulation path reusable respectively flows table and port, therefore, each stream table and port are dispatched, to ensure that every bar virtual circulation path can process data to be forwarded in time, effectively improve the efficiency of data retransmission, in addition, for technical staff provides the design interface in virtual circulation path, technical staff can be convenient to and adjust existing virtual circulation path according to the actual requirements.
Accompanying drawing explanation
Fig. 1 is shown as the flow chart of the method for utilization stream table forwarding data of the present invention.
Fig. 2 is shown as the schematic diagram that in the method for utilization stream table forwarding data of the present invention, data circulate in many virtual circulation paths.
Fig. 3 is shown as the system configuration schematic diagram of utilization stream table forwarding data of the present invention.
Embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
As shown in Figure 1, the invention provides a kind of method utilizing stream table forwarding data.Described retransmission method performs primarily of repeater system.Described repeater system comprises: comprise the software and hardware in the network access equipment of stream table.Wherein, the hardware in described network access equipment comprises: for performing the chip of described retransmission method.Described network access equipment includes but not limited to: switch, router etc.
In step sl, described repeater system presets the virtual circulation path be made up of at least one stream table according to the type of service of data.
Particularly, described repeater system preserves at least one stream table in advance.It is abstract that described stream table can be deemed to be the one of OpenFlow to the data retransmission function of the network equipment.Received data circulate at least one stream table according to described virtual circulation path by described repeater system, can obtain the information such as destination address, port for forwarding described data from corresponding stream table.Wherein, the forwarding of data can be realized by a described virtual circulation path, also can be realized by many described virtual circulation paths.If when carrying out forwarding data by many described virtual circulation paths, last the stream table in the virtual circulation path selected by described repeater system can jump to first stream table in next virtual circulation path.
At this, described type of service includes but not limited to: video type, type of webpage, based on the nested type of webpage, based on the nested type etc. of video.Described repeater system can be fixedly installed corresponding virtual circulation path according to existing type of service.
At this, each stream table in described virtual circulation path has can redirect/can not the attribute of redirect.Wherein, attribute is can not last in virtual circulation path, place of the stream epi-position of redirect.
Preferably, described repeater system provides one for the configuration interface of incoming traffic type and stream table, and the design operation in the type of service of carrying out in described configuration interface according to user and the virtual circulation path of correspondence, generates a virtual circulation path.
Particularly, described repeater system be provided for designing, the configuration interface in management service type and virtual circulation path.Namely user can increase stream table according to new type of service in described repeater system, and according to each stream table in the virtual circulation path of new service class design correspondence and stream table order, generates a new virtual circulation path thus.
Described repeater system can also allow user change or delete existing type of service and corresponding virtual circulation path, to meet the application needs of switch in different occasion.
In step s 2, when described repeater system receives data, described repeater system selects a virtual circulation path according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, then according to the value of each stream table in last virtual circulation path described, received data are forwarded.
Particularly, an address may be comprised in the data that described repeater system receives, also may comprise multiple address.Therefore, when selecting virtual circulation path, described repeater system needs to select a virtual circulation path according to the type of service of described data.Behind the virtual circulation path selected by described data are sent into, described repeater system can according to the matching result of each stream table in this virtual circulation path with the respective protocol in described data, select whether also to need to carry out degree of depth excavation to data, to obtain the optimized forwarding mechanism of data retransmission and corresponding port.
Such as, the data that described repeater system receives belong to based on the nested type of webpage, then described repeater system selects the virtual circulation path of Article 1 of the corresponding type nested based on webpage.When described data are carried out characteristic matching by the web-page transmission agreement that each stream table during described repeater system is according to selected Article 1 virtual circulation path provides, the type of service obtaining nested subdata is video type, then the jump instruction of last the stream table in virtual for described Article 1 circulation path is set to the numbering in the virtual circulation path of Article 2 of corresponding video type, and accordingly described data is sent in the virtual circulation path of described Article 2.Video subdata in described data is determined to there is no other nested data in described video subdata by the characteristic matching of each stream table in described Article 2 virtual circulation path by described repeater system, be then can not redirect by the setup of attribute of last stream table in virtual for described Article 2 circulation path, and determine the physical output port of described data according to the characteristic matching result of each stream table in described Article 2 virtual circulation path and forwarded.Wherein, the circulation process in described Article 1 virtual circulation path and the virtual circulation path of Article 2 can with reference to shown in figure 2.
Preferably, described repeater system can simultaneously for multiple data carry out the circulation in virtual circulation path, to reach the object to multidata parallel processing.Therefore, described repeater system, before the described type of service according to received data selects the step in a virtual circulation path, also performs: for received data open up a buffer area, by the step of received data stored in described buffer area.
Such as, described repeater system can open up a Buffer Pool for received data, and by received data stored in described Buffer Pool.When described repeater system does not meet predetermined number threshold value according to the quantity in the virtual circulation path of present parallel process, from described Buffer Pool, obtain data, and distribute corresponding virtual circulation path according to the type of service of obtained data.
More preferably, described repeater system according to preset each type of service priority from high to low, successively by virtual for the data corresponding selection in described buffer area one circulation path.
Particularly, high priority data high for described Buffer Pool medium priority according to the priority in each type of service design respective virtual circulation path, and according to the type of service of received data, is provided virtual circulation path by described repeater system.
Such as, the data in described Buffer Pool are respectively type of webpage and video type.Then described repeater system presets the virtual circulation path of virtual circulation path priority higher than type of webpage of video type, and provides a virtual circulation path according to the high priority data of video type.And the data of type of webpage are still placed in described Buffer Pool, and after waiting for that the data of described repeater system parallel processing have been forwarded, the data of type of webpage described in reprocessing.
Because each stream table can be preset in different virtual circulation paths, therefore, when each data of described repeater system parallel processing, the use same flow table that may conflict in different virtual circulation paths; Or during each data of described repeater system parallel processing, final same port of selecting carries out data retransmission.Now, described repeater system cannot use a stream table/port towards different pieces of information simultaneously.Therefore, described repeater system needs to dispatch shared resource.Therefore, while described repeater system performs described step S2, described repeater system also performs step S3 (not giving diagram).
In step s3, described repeater system, according to the scheduling strategy preset, will need to use the different pieces of information of same stream table and/or port to dispatch in respective virtual circulation path.
At this, described scheduling strategy includes but not limited to following at least one: based on strict priority, based on load balance, based on queue scheduling etc.
Such as, described repeater system monitors the data A1 of type of webpage and the data A2 of video type all to be needed to use stream table B1 in respective virtual circulation path, then according to strict priority policy, virtual circulation path, designation data A2 place first takies stream table B1, when at data A2 place, virtual circulation path discharges the rights of using of convection current table B1, more virtual circulation path, designation data A1 place takies stream table B1.
As shown in Figure 3, the invention provides a kind of system utilizing stream table forwarding data.Described repeater system 1 comprises: comprise the software and hardware in the network access equipment of stream table.Wherein, the hardware in described network access equipment comprises: for performing the chip of described retransmission method.Described network access equipment includes but not limited to: switch, router etc.
Described repeater system 1 comprises: preset unit 11, retransmission unit 12.
Described default unit 11 is for presetting the virtual circulation path be made up of at least one stream table according to the type of service of data.
Particularly, described default unit 11 preserves at least one stream table in advance.It is abstract that described stream table can be deemed to be the one of OpenFlow to the data retransmission function of the network equipment.Received data circulate at least one stream table according to described virtual circulation path by described default unit 11, can obtain the information such as destination address, port for forwarding described data from corresponding stream table.Wherein, the forwarding of data can be realized by a described virtual circulation path, also can be realized by many described virtual circulation paths.If when carrying out forwarding data by many described virtual circulation paths, last the stream table in the virtual circulation path selected by described default unit 11 can jump to first stream table in next virtual circulation path.
At this, described type of service includes but not limited to: video type, type of webpage etc.Described default unit 11 can be fixedly installed corresponding virtual circulation path according to existing type of service.
At this, each stream table in described virtual circulation path has can redirect/can not the attribute of redirect.Wherein, attribute is can not last in virtual circulation path, place of the stream epi-position of redirect.
Preferably, described default unit 11 provides one for the configuration interface of incoming traffic type and stream table, and the design operation in the type of service of carrying out in described configuration interface according to user and the virtual circulation path of correspondence, generates a virtual circulation path.
Particularly, described default unit 11 be provided for designing, the configuration interface in management service type and virtual circulation path.Namely user can increase stream table according to new type of service in described default unit 11, and according to each stream table in the virtual circulation path of new service class design correspondence and stream table order, generates a new virtual circulation path thus.
Described default unit 11 can also allow user change or delete existing type of service and corresponding virtual circulation path, to meet the application needs of switch in different occasion.
When described retransmission unit 12 receives data, described retransmission unit 12 is for selecting a virtual circulation path according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, then according to the value of each stream table in last virtual circulation path described, received data are forwarded.
Particularly, an address may be comprised in the data that described retransmission unit 12 receives, also may comprise multiple address.Therefore, when selecting virtual circulation path, described retransmission unit 12 needs to select a virtual circulation path according to the type of service of described data.Behind the virtual circulation path selected by described data are sent into, described retransmission unit 12 can according to the matching result of each stream table in this virtual circulation path with the respective protocol in described data, select whether also to need to carry out degree of depth excavation to data, to obtain the optimized forwarding mechanism of data retransmission and corresponding port.
Such as, the data that described retransmission unit 12 receives belong to based on the nested type of webpage, then described retransmission unit 12 selects the virtual circulation path of Article 1 of the corresponding type nested based on webpage.When described data are carried out characteristic matching by the web-page transmission agreement that each stream table during described retransmission unit 12 is according to selected Article 1 virtual circulation path provides, the type of service obtaining nested subdata is video type, then the jump instruction of last the stream table in virtual for described Article 1 circulation path is set to the numbering in the virtual circulation path of Article 2 of corresponding video type, and accordingly described data is sent in the virtual circulation path of described Article 2.Video subdata in described data is determined to there is no other nested data in described video subdata by the characteristic matching of each stream table in described Article 2 virtual circulation path by described retransmission unit 12, be then can not redirect by the setup of attribute of last stream table in virtual for described Article 2 circulation path, and determine the physical output port of described data according to the characteristic matching result of each stream table in described Article 2 virtual circulation path and forwarded.Wherein, the circulation process in described Article 1 virtual circulation path and the virtual circulation path of Article 2 can with reference to shown in figure 2.
Preferably, described retransmission unit 12 can simultaneously for multiple data carry out the circulation in virtual circulation path, to reach the object to multidata parallel processing.Therefore, described retransmission unit 12, before the described type of service according to received data selects the step in a virtual circulation path, also performs: for received data open up a buffer area, by the step of received data stored in described buffer area.
Such as, described retransmission unit 12 can open up a Buffer Pool for received data, and by received data stored in described Buffer Pool.When described retransmission unit 12 does not meet predetermined number threshold value according to the quantity in the virtual circulation path of present parallel process, from described Buffer Pool, obtain data, and distribute corresponding virtual circulation path according to the type of service of obtained data.
More preferably, described retransmission unit 12 according to preset each type of service priority from high to low, successively by virtual for the data corresponding selection in described buffer area one circulation path.
Particularly, high priority data high for described Buffer Pool medium priority according to the priority in each type of service design respective virtual circulation path, and according to the type of service of received data, is provided virtual circulation path by described retransmission unit 12.
Such as, the data in described Buffer Pool are respectively type of webpage and video type.Then described retransmission unit 12 presets the virtual circulation path of virtual circulation path priority higher than type of webpage of video type, and provides a virtual circulation path according to the high priority data of video type.And the data of type of webpage are still placed in described Buffer Pool, and after waiting for that the data of described retransmission unit 12 parallel processing have been forwarded, the data of type of webpage described in reprocessing.
Because each stream table can be preset in different virtual circulation paths, therefore, when each data of described repeater system 1 parallel processing, the use same flow table that may conflict in different virtual circulation paths; Or during each data of described repeater system 1 parallel processing, final same port of selecting carries out data retransmission.Now, described repeater system 1 cannot use a stream table/port towards different pieces of information simultaneously.Therefore, described repeater system 1 needs to dispatch shared resource.Therefore, while described retransmission unit 12 performs, described repeater system 1 also comprises: scheduling unit (not giving diagram).
Described scheduling unit is used for, according to the scheduling strategy preset, will needing to use the different pieces of information of same stream table and/or port to dispatch in respective virtual circulation path.
At this, described scheduling strategy includes but not limited to following at least one: based on strict priority, based on load balance, based on queue scheduling etc.
Such as, described scheduling unit monitors the data A1 of type of webpage and the data A2 of video type all to be needed to use stream table B1 in respective virtual circulation path, then according to strict priority policy, virtual circulation path, designation data A2 place first takies stream table B1, when at data A2 place, virtual circulation path discharges the rights of using of convection current table B1, more virtual circulation path, designation data A1 place takies stream table B1.
In sum, the method and system utilizing stream table forwarding data of the present invention, by arranging virtual circulation path according to type of service, can be distinguished with nested data and non-nested data, and the nested virtual circulation path of every one deck is set for the type of service of nested data, and determine the nested corresponding virtual circulation path of lower one deck according to the value obtained stream table matched data each in last virtual circulation path, and directly go to respective virtual circulation path, so, existing OpenFlow switch can be effectively avoided to need repeatedly data to be exported the repetitive operation returning physical input port again from physical output port, improve the service efficiency of physical port, in addition, because OpenFlow switch can process many virtual circulation paths simultaneously, and each virtual circulation path reusable respectively flows table and port, therefore, each stream table and port are dispatched, to ensure that every bar virtual circulation path can process data to be forwarded in time, effectively improve the efficiency of data retransmission, in addition, for technical staff provides the design interface in virtual circulation path, technical staff can be convenient to and adjust existing virtual circulation path according to the actual requirements, further, adopting the mode in virtual circulation path, without the need to increasing the design difficulty of chip, level Four even more multilevel flow table can be applicable to.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (10)
1. utilize a method for stream table forwarding data, it is characterized in that, comprising:
The virtual circulation path be made up of at least one stream table is preset according to the type of service of data;
A virtual circulation path is selected according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, then according to the value of each stream table in last virtual circulation path described, received data are forwarded.
2. the method utilizing stream table forwarding data according to claim 1, it is characterized in that, the mode that the described type of service according to data presets the virtual circulation path be made up of at least one stream table comprises:
There is provided one for the configuration interface of incoming traffic type and stream table, the design operation in the type of service of carrying out in described configuration interface according to user and corresponding virtual circulation path, generates a virtual circulation path.
3. the method utilizing stream table forwarding data according to claim 1, it is characterized in that, select the step in a virtual circulation path in the described type of service according to received data before, also comprise: for received data open up a buffer area, by received data stored in described buffer area.
4. the method utilizing stream table forwarding data according to claim 3, it is characterized in that, the described type of service according to received data selects the mode in a virtual circulation path to comprise:
According to preset each type of service priority from high to low, successively by virtual for the data corresponding selection in described buffer area one circulation path.
5. the method utilizing stream table forwarding data according to claim 1, it is characterized in that, the port for forwarding data is comprised in described virtual circulation path, corresponding, a virtual circulation path is being selected according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, in the process then according to the value of each stream table in last virtual circulation path described, received data forwarded, described method also comprises:
According to the scheduling strategy preset, will need to use the different pieces of information of same stream table and/or port to dispatch in respective virtual circulation path.
6. utilize a system for stream table forwarding data, it is characterized in that, comprising:
Preset unit, for presetting the virtual circulation path be made up of at least one stream table according to the type of service of data;
Retransmission unit, for selecting a virtual circulation path according to the type of service of received data, and the value of each stream table obtained when circulating in selected virtual circulation path according to received data, select next virtual circulation path, until the attribute of last stream table in selected virtual circulation path is can not redirect, then according to the value of each stream table in last virtual circulation path described, received data are forwarded.
7. the system utilizing stream table forwarding data according to claim 6, it is characterized in that, described default unit is for providing one for the configuration interface of incoming traffic type and stream table, the design operation in the type of service of carrying out in described configuration interface according to user and corresponding virtual circulation path, generates a virtual circulation path.
8. the system utilizing stream table forwarding data according to claim 6, it is characterized in that, also comprise: buffer unit, before selecting a virtual circulation path at described retransmission unit according to the type of service of received data, for received data open up a buffer area, by received data stored in described buffer area.
9. the system utilizing stream table forwarding data according to claim 8, it is characterized in that, described retransmission unit also for according to preset each type of service priority from high to low, successively by virtual for the data corresponding selection in described buffer area one circulation path.
10. the system utilizing stream table forwarding data according to claim 6, it is characterized in that, the port for forwarding data is comprised in described virtual circulation path, corresponding, be that multiple data are carried out in the process of forward process at described retransmission unit, described system also comprises: scheduling unit, for according to the scheduling strategy preset, will need to use the different pieces of information of same stream table and/or port to dispatch in respective virtual circulation path.
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| PCT/CN2015/093054 WO2016188032A1 (en) | 2015-05-26 | 2015-10-28 | Data forwarding method and system using flow table |
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| CN110391982A (en) * | 2018-04-20 | 2019-10-29 | 伊姆西Ip控股有限责任公司 | Transmit method, equipment and the computer program product of data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016188032A1 (en) * | 2015-05-26 | 2016-12-01 | 上海斐讯数据通信技术有限公司 | Data forwarding method and system using flow table |
| CN110391982A (en) * | 2018-04-20 | 2019-10-29 | 伊姆西Ip控股有限责任公司 | Transmit method, equipment and the computer program product of data |
| CN110391982B (en) * | 2018-04-20 | 2022-03-11 | 伊姆西Ip控股有限责任公司 | Method, apparatus and computer program product for transmitting data |
| US11336580B2 (en) | 2018-04-20 | 2022-05-17 | EMC IP Holding Company LLC | Methods, apparatuses and computer program products for transmitting data |
| CN109286567A (en) * | 2018-11-23 | 2019-01-29 | 腾讯科技（深圳）有限公司 | Acquisition methods, device and the equipment of routing strategy |
| CN109286567B (en) * | 2018-11-23 | 2020-07-28 | 腾讯科技（深圳）有限公司 | Method, device and equipment for acquiring routing strategy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104954261B (en) | 2018-01-16 |
| WO2016188032A1 (en) | 2016-12-01 |
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