CN101707550A - Method and equipment for determining data flow to be mirrored - Google Patents
Method and equipment for determining data flow to be mirrored Download PDFInfo
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Abstract
The embodiment of the invention relates to the field of data communication, in particular to a method and equipment for determining a data flow to be mirrored, which is used for avoiding limitation of an ACL resource when flow mirroring is performed and reducing requirements on the capacity of equipment. The method of the embodiment of the invention comprises: receiving a data flow and selecting mirroring policy information from a physical port table; determining a corresponding logic port index according to the selected mirroring policy information; if the determined logic port index is available in a logic port table, determining a mirroring enabling mark corresponding to the logic port index in the logic port table; and if the state of the mirroring enabling mark is open, determining the data flow is the data flow to be mirrored. The method of the embodiment of the invention can determine a data flow to be mirrored according to the mirroring policy information, thereby avoiding limitation of the ACL resource and reducing the requirements on the capacity of the equipment.
Description
Technical field
The present invention relates to data communication field, particularly a kind of method and apparatus of definite mirror image data stream.
Background technology
Data image technology (Mirror) is a kind of switch function commonly used, finger arrives the data image that transmits on physical port of switch (Switch) physical port of another appointment, connect measuring and analysing meter at the physical port of appointment, make things convenient for the user to monitor the situation that port on the switch device received or sent data flow.
As shown in Figure 1, monitored port is called " source port ", and monitoring port is called " mirror port ".According to the direction difference of Port Mirroring data, mirror image can be divided into into port mirror image and go out port mirror image, wherein, goes into port mirror image and be data image with the source port receive direction to mirror port, goes out port mirror image and be data image with the source port sending direction to mirror port.
At present, the pattern that mirror image is realized comprises two kinds: Port Mirroring and traffic mirroring, wherein, Port Mirroring is that all data flow with source port all are mirrored to mirror port, does not distinguish data stream type.Wherein, traffic mirroring identifies the data flow that the user needs by ACL (Access Control List, access control lists) technology, and is mirrored to mirror port.
Port Mirroring is realized simple, but Port Mirroring needs all data all are mirrored to mirror port, if the source port flow is very big, simultaneously the data flow that needs of user only is wherein during seldom a part of, and the user is difficult to find out needed that part of data flow from a large amount of mirror image data stream.
The traffic mirroring technology is by the ACL technology data to be mirrored to mirror port from source port.The ACL technology can be passed through TCAM (Ternary Content Addressable Memory, TCAM) realizes the message coupling, but ACL realizes that traffic mirroring has certain limitation, such as: realize that by ACL traffic mirroring must be subjected to the restriction of ACL resource; Also have when the acl feature of some equipment is more weak, realize that traffic mirroring also has certain restriction, for example: when equipment is not supported ACL coupling based on label, so the just very difficult data flow that will comprise this label of user exactly mirror image come out.
In sum, at present the traffic mirroring technology is subjected to the restriction of ACL resource, and to the requirement of capacity of equipment also than higher.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of definite mirror image data stream, in order to not being subjected to the restriction of ACL resource when carrying out traffic mirroring, and reduces the requirement to capacity of equipment.
The method of a kind of definite mirror image data stream that the embodiment of the invention provides, this method comprises:
According to the data flow of receiving, select the mirror policy information in the physics port table;
According to the mirror policy information of selecting, determine corresponding logic port index;
If in the logical end oral thermometer definite logic port index is arranged, then from the logical end oral thermometer, determine the mirror image enabler flags of described logic port index correspondence;
If the state of described mirror image enabler flags is to open, determine that then the data flow of receiving is a mirror image data stream.
The equipment of a kind of definite mirror image data stream that the embodiment of the invention provides, this equipment comprises:
The strategy determination module is used for selecting the mirror policy information in the physics port table according to the data flow of receiving;
The index determination module is used for determining corresponding logic port index according to the mirror policy information of selecting;
Select module, be used for checking whether the logical end oral thermometer has definite logic port index;
The sign determination module is used for when the logical end oral thermometer has definite logic port index, determines the mirror image enabler flags of described logic port index correspondence from the logical end oral thermometer;
Processing module is used for when the state of described mirror image enabler flags is unlatching, determines that the data flow of receiving is a mirror image data stream.
The embodiment of the invention is according to the data flow of receiving, select the mirror policy information in the physics port table, according to the mirror policy information of selecting, determine corresponding logic port index, if in the logical end oral thermometer definite logic port index is arranged, then determining the mirror image enabler flags of described logic port index correspondence from the logical end oral thermometer, is to open at the state of mirror image enabler flags, determines that the data flow of receiving is a mirror image data stream.Owing to can need determine the data flow of mirror image by mirror policy information, thereby not be subjected to the restriction of ACL resource, and reduction is to the requirement of capacity of equipment;
Further, because ACL is used for network security, service quality etc., does not take the ACL resource and can also improve network security and service quality.
Description of drawings
Fig. 1 is the data image schematic diagram;
Fig. 2 determines the device structure schematic diagram of mirror image data stream for the embodiment of the invention;
Fig. 3 determines the method flow schematic diagram of mirror image data stream for the embodiment of the invention;
Fig. 4 is the method flow schematic diagram of embodiment of the invention configures physical port table and logical end oral thermometer;
Fig. 5 realizes the method flow schematic diagram of traffic mirroring for the embodiment of the invention.
Embodiment
The embodiment of the invention is according to the data flow of receiving, select the mirror policy information in the physics port table, according to the mirror policy information of selecting, determine corresponding logic port index, if in the logical end oral thermometer definite logic port index is arranged, then determining the mirror image enabler flags of described logic port index correspondence from the logical end oral thermometer, is to open at the state of mirror image enabler flags, determines that the data flow of receiving is a mirror image data stream.Owing to can need determine the data flow of mirror image by mirror policy information, thereby not be subjected to the restriction of ACL resource, and reduction is to the requirement of capacity of equipment.
Wherein, the mirror policy information of the embodiment of the invention includes but not limited to one or more in the following message:
MAC (Media Access Control, the medium access control) address, IP (Internet Protocol, Internet protocol) address, VLAN (VLAN Virtual LAN VLAN) sign, LABEL (label), VLAN priority, message IP precedence, protocol number, TCP (Transmission ControlProtocol, transmission control protocol) port numbers, UDP (User Datagram Protocol, User Datagram Protoco (UDP)) port numbers and message physical port number.
MAC Address can also be subdivided into source MAC and/or target MAC (Media Access Control) address; The IP address can also be subdivided into source IP address and/or purpose IP address.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 2, the embodiment of the invention determines that the equipment of mirror image data stream comprises: tactful determination module 10, index determination module 20, selection module 30, sign determination module 40 and processing module 50.
Select module 30, be used for the logic port index of checking whether the logical end oral thermometer has index determination module 20 to determine;
Wherein, the embodiment of the invention determines that the equipment of mirror image data stream can further include: mirror image module 60.
In specific implementation process, can be in advance according to mirror policy information, (quantity of logic port can be configured as required for LogicPort, model LP) to set up logic port.
Concrete, each port all can be provided with mirror policy information in the physical port table, and specifically the mirror policy information of each port can be configured manually, by network management interface the mirror policy information that configures is saved in the physical port table then;
Further, have a plurality of logic port index in the logical end oral thermometer, each logic port index corresponding mirror image enabler flags of meeting and mirror port information, network management interface can be with mirror image enabler flags and mirror port information setting in the logical end oral thermometer, and the state of concrete mirror image enabler flags is that open can be by manually being provided with or close.
If the embodiment of the invention is determined the equipment of mirror image data stream a plurality of ports are arranged, then tactful determination module 10 need be determined the mirror policy information of this physical port correspondence from the physical port table after receiving data flow by physical port.
Wherein, during logic port index in the configuration logic port table, need specify the logic port index according to mirror policy information; Accordingly, index determination module 20 obtains the logic port index according to the mirror policy information of this physical port correspondence and the characteristic of data flow when definite logic port index.
Concrete, index determination module 20 is according to the mirror policy information of selecting, and determines the characteristic of the data flow received, and with the characteristic of data flow as the logic port index.
Such as: mirror policy information is LABEL, and LABEL is directly as the logic port index, and then the LABEL of the mirror policy Information Selection data flow directly selected according to tactful determination module 10 of index determination module 20 is as the index of logical end oral thermometer.
This mode since directly the use characteristic data as the logic port index, so can cause the logic port index to take more bit.In order to reduce the bit that the logic port index takies, save memory space, when a kind of preferable mode is a logic port index in the configuration logic port table, according to mirror policy information the specific characteristic data are calculated, obtain the logic port index, when configuration, can in the physical port table, increase the corresponding relation of mirror policy information and account form; Accordingly, index determination module 20 is when definite logic port index, according to the mirror policy information of selecting, determine the characteristic of the data flow received, and the account form of from the physical port table, determining this physical port correspondence, utilize the account form of determining that the characteristic of established data stream is calculated, obtain the logic port index.
Certainly, a kind of if account form has only, also can in the physical port table, not increase the corresponding relation of mirror policy information and account form, but predesignate account form.
Such as mirror policy information is MAC Address, adopt Hash (Hash) algorithm, the key value is the MAC Address of mirror policy information appointment, then index determination module 20 is selected corresponding account form (being hash algorithm) according to the mirror policy that tactful determination module 10 is determined earlier, adopt hash algorithm then, the MAC Address of data flow is calculated as the key value, and the value that obtains is exactly the logic port index.
Need to prove that the embodiment of the invention is not limited to hash algorithm, other can utilize mirror policy information, and the algorithm that calculates fixed value is suitable for the embodiment of the invention equally.
If the embodiment of the invention determines that the equipment of mirror image data stream is switch, then the tactful determination module 10 of the embodiment of the invention, index determination module 20, selection module 30, sign determination module 40 and processing module 50 can realize by the data forwarding module of switch.
As shown in Figure 3, the embodiment of the invention determines that the method for mirror image data stream comprises the following steps:
The data flow that step 301, basis are received is selected the mirror policy information in the physics port table.
Step 302, according to the mirror policy information of selecting, determine corresponding logic port index.
Step 303, check whether definite logic port index is arranged in the logical end oral thermometer.
Step 304, if in the logical end oral thermometer definite logic port index is arranged, then from the logical end oral thermometer, determine the mirror image enabler flags of described logic port index correspondence.
Step 305, if the state of mirror image enabler flags is to open, determine that then the data flow of receiving is a mirror image data stream.
Wherein, can further include after the step 305:
Step 306, from the logical end oral thermometer, determine the mirror port information of logic port index correspondence.
Step 307, according to mirror port information, with the mirror image data traffic mirroring to corresponding mirror image destination interface.
In specific implementation process, can set up the model of logic port in advance according to mirror policy information, the quantity of logic port can be configured as required, specifically can be referring to Fig. 4.
If the embodiment of the invention is determined the equipment of mirror image data stream a plurality of ports are arranged, then in the step 301, after receiving data flow by physical port, need from the physical port table, determine the mirror policy information of this physical port correspondence, from the data flow that receives by this physical port, the data flow of the mirror policy information of this physical port correspondence is satisfied in selection then.
Wherein, during logic port index in the configuration logic port table, can be according to mirror policy information and specific characteristic data computation logic port index; Accordingly, in the step 302, when definite logic port index, calculate the logic port index according to the mirror policy Information Selection data flow characteristic of this physical port correspondence.
Concrete, can be according to the mirror policy information of selecting, determine the characteristic of the data flow received, and with the characteristic of data flow as the logic port index.
Such as: mirror policy information is LABEL, and LABEL is directly as the logic port index, then directly with the LABEL of the data flow the selected index as the logical end oral thermometer.
This mode since directly the use characteristic data as the logic port index, so can cause the logic port index to take more bit.In order to reduce the bit that the logic port index takies, save memory space, when a kind of preferable mode is a logic port index in the configuration logic port table, according to mirror policy the specific characteristic data are calculated, obtain the logic port index, when configuration, can in the physical port table, increase the corresponding relation of mirror policy information and account form; Accordingly, in the step 302, when definite logic port index, according to the mirror policy information of selecting, determine the characteristic of the data flow received, and the account form of from the physical port table, determining this physical port correspondence, utilize the account form of determining that the characteristic of established data stream is calculated, obtain the logic port index.
Certainly, a kind of if account form has only, also can in the physical port table, not increase the corresponding relation of mirror policy information and account form, but predesignate account form.
Such as mirror policy information is MAC Address, adopt hash algorithm, the key value is the MAC Address of mirror policy information appointment, the account form (being hash algorithm) of the MAC correspondence of then first specified data stream, adopt hash algorithm then, the MAC Address of data flow is calculated as the key value, and the value that obtains is exactly the logic port index.
Need to prove that the embodiment of the invention is not limited to hash algorithm, other can utilize mirror policy information, and the algorithm that calculates fixed value is suitable for the embodiment of the invention equally.
As shown in Figure 4, the method for embodiment of the invention configures physical port table and logical end oral thermometer comprises the following steps:
Concrete, each port all can be provided with mirror policy information in the logical end oral thermometer, and specifically the mirror policy information of each port can be configured manually, and network management interface is saved in the mirror policy information that configures in the logical end oral thermometer then.
Concrete, network management interface is unique logic port index of each distribution of flows, the logic port index of data flow correspondence is exactly the logic port index of determining according to the mirror policy information of this data flow correspondence.
Concrete, the corresponding arrangement of mirrors of each logic port index meeting is as enabler flags and mirror port information, network management interface with mirror image enabler flags and mirror port information setting in the logical end oral thermometer, the state of concrete mirror image enabler flags is that unlatching can be by manually being provided with or close, and mirror port information too can be by artificial setting.
As required the logic port index except a corresponding arrangement of mirrors as enabler flags and mirror port information, can also corresponding other information.
Being applied in switch with the method for the embodiment of the invention below is that example describes.
As shown in Figure 5, the embodiment of the invention realizes that the method for traffic mirroring comprises the following steps:
In step 505, the switch decision logic port table whether definite logic port index is arranged, if then execution in step 506; Otherwise, execution in step 510;
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
From the foregoing description as can be seen: the embodiment of the invention is selected the mirror policy information in the physics port table according to the data flow received; According to the mirror policy information of selecting, determine corresponding logic port index;
If in the logical end oral thermometer definite logic port index is arranged, then from the logical end oral thermometer, determine the mirror image enabler flags of described logic port index correspondence; If the state of described mirror image enabler flags is to open, determine that then the data flow of receiving is a mirror image data stream.
Owing to can need determine the data flow of mirror image by mirror policy information, thereby not be subjected to the restriction of ACL resource, and reduction is to the requirement of capacity of equipment;
Further, because ACL is used for network security, service quality etc., does not take the ACL resource and can also improve network security and service quality.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. the method for a definite mirror image data stream is characterized in that this method comprises:
According to the data flow of receiving, select the mirror policy information in the physics port table;
According to the mirror policy information of selecting, determine corresponding logic port index;
If in the logical end oral thermometer definite logic port index is arranged, then from the logical end oral thermometer, determine the mirror image enabler flags of described logic port index correspondence;
If the state of described mirror image enabler flags is to open, determine that then the data flow of receiving is a mirror image data stream.
2. the method for claim 1 is characterized in that, describedly determines that the data flow of receiving is also to comprise after the mirror image data stream:
From the logical end oral thermometer, determine the mirror port information of described logic port index correspondence;
According to described mirror port information, with the mirror image destination interface of described mirror image data traffic mirroring to correspondence.
3. the method for claim 1 is characterized in that, the mirror policy information in the described selection physics port table comprises:
After receiving data flow, from the physical port table, determine the mirror policy information of this physical port correspondence by physical port.
4. method as claimed in claim 3 is characterized in that, and is described according to the mirror policy information of selecting, and determines that corresponding logic port index comprises:
According to the mirror policy information of selecting, determine the characteristic of the data flow received, and with the characteristic of established data stream as the logic port index; Or according to the mirror policy information of selecting, determine the characteristic of the data flow received, and the account form of from the physical port table, determining this physical port correspondence, utilize the account form of determining that the characteristic of established data stream is calculated, obtain the logic port index.
5. as the described method of the arbitrary claim of claim 1～4, it is characterized in that described mirror policy information comprises one or more in the following message:
Media access control MAC address, Internet protocol IP address, virtual LAN VLAN sign, label LABEL, VLAN priority, message IP precedence, protocol number, transmission control protocol tcp port number, User Datagram Protoco (UDP) udp port number and message physical port number.
6. the equipment of a definite mirror image data stream is characterized in that this equipment comprises:
The strategy determination module is used for selecting the mirror policy information in the physics port table according to the data flow of receiving;
The index determination module is used for determining corresponding logic port index according to the mirror policy information of selecting;
Select module, be used for checking whether the logical end oral thermometer has definite logic port index;
The sign determination module is used for when the logical end oral thermometer has definite logic port index, determines the mirror image enabler flags of described logic port index correspondence from the logical end oral thermometer;
Processing module is used for when the state of described mirror image enabler flags is unlatching, determines that the data flow of receiving is a mirror image data stream.
7. equipment as claimed in claim 6 is characterized in that, described equipment also comprises:
The mirror image module, be used for after described processing module determines that the data flow of receiving is mirror image data stream, from the logical end oral thermometer, determine the mirror port information of described logic port index correspondence, according to described mirror port information, with the mirror image destination interface of described mirror image data traffic mirroring to correspondence.
8. equipment as claimed in claim 6 is characterized in that, described tactful determination module is used for:
After receiving data flow, from the physical port table, determine the mirror policy information of this physical port correspondence by physical port.
9. method as claimed in claim 8 is characterized in that, described index determination module is used for:
According to the mirror policy information of selecting, determine the characteristic of the data flow received, and with the characteristic of data flow as the logic port index; Or according to the mirror policy information of selecting, determine the characteristic of the data flow received, and the account form of from the physical port table, determining this physical port correspondence, utilize the account form of determining that the characteristic of established data stream is calculated, obtain the logic port index.
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| CN 200910205971 CN101707550B (en) | 2009-11-30 | 2009-11-30 | Method and equipment for determining data flow to be mirrored |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102025544A (en) * | 2010-12-16 | 2011-04-20 | 中兴通讯股份有限公司 | Stream mirror image capturing method and device |
| CN102316040A (en) * | 2011-09-09 | 2012-01-11 | 中兴通讯股份有限公司 | Access control list finding method and data stream classification device |
| CN102932262A (en) * | 2011-08-11 | 2013-02-13 | 中兴通讯股份有限公司 | Network processor and image realizing method thereof |
| CN104243211A (en) * | 2014-09-22 | 2014-12-24 | 北京星网锐捷网络技术有限公司 | Data stream mirroring method and device |
| CN106559233A (en) * | 2015-09-28 | 2017-04-05 | 中兴通讯股份有限公司 | The mirror processing method and device of data flow |
| CN108712496A (en) * | 2018-05-21 | 2018-10-26 | 鼎点视讯科技有限公司 | A kind of Port Mirroring method and device of OLT device |
| WO2023024919A1 (en) * | 2021-08-24 | 2023-03-02 | International Business Machines Corporation | Transport control word architecture for physical port mirroring |
| US12028276B2 (en) | 2021-08-24 | 2024-07-02 | International Business Machines Corporation | Transport control word architecture for virtual port mirroring |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101252475A (en) * | 2008-03-28 | 2008-08-27 | 中兴通讯股份有限公司 | Message mirror-image method and apparatus |
| CN101304411A (en) * | 2008-06-10 | 2008-11-12 | 中兴通讯股份有限公司 | Flow mirror method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102025544A (en) * | 2010-12-16 | 2011-04-20 | 中兴通讯股份有限公司 | Stream mirror image capturing method and device |
| CN102025544B (en) * | 2010-12-16 | 2015-09-16 | 中兴通讯股份有限公司 | Stream mirror image capturing method and device |
| CN102932262A (en) * | 2011-08-11 | 2013-02-13 | 中兴通讯股份有限公司 | Network processor and image realizing method thereof |
| CN102316040A (en) * | 2011-09-09 | 2012-01-11 | 中兴通讯股份有限公司 | Access control list finding method and data stream classification device |
| CN102316040B (en) * | 2011-09-09 | 2017-12-26 | 中兴通讯股份有限公司 | The method and data stream classification device of a kind of access control list finding |
| CN104243211A (en) * | 2014-09-22 | 2014-12-24 | 北京星网锐捷网络技术有限公司 | Data stream mirroring method and device |
| CN106559233A (en) * | 2015-09-28 | 2017-04-05 | 中兴通讯股份有限公司 | The mirror processing method and device of data flow |
| CN108712496A (en) * | 2018-05-21 | 2018-10-26 | 鼎点视讯科技有限公司 | A kind of Port Mirroring method and device of OLT device |
| WO2023024919A1 (en) * | 2021-08-24 | 2023-03-02 | International Business Machines Corporation | Transport control word architecture for physical port mirroring |
| US11722436B2 (en) | 2021-08-24 | 2023-08-08 | International Business Machines Corporation | Transport control word architecture for physical port mirroring |
| US12028276B2 (en) | 2021-08-24 | 2024-07-02 | International Business Machines Corporation | Transport control word architecture for virtual port mirroring |
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| CN101707550B (en) | 2012-01-25 |
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