CN111478862B - Remote data mirroring system and method - Google Patents
Remote data mirroring system and method Download PDFInfo
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- CN111478862B CN111478862B CN202010156767.9A CN202010156767A CN111478862B CN 111478862 B CN111478862 B CN 111478862B CN 202010156767 A CN202010156767 A CN 202010156767A CN 111478862 B CN111478862 B CN 111478862B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/208—Port mirroring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/201—Multicast operation; Broadcast operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3009—Header conversion, routing tables or routing tags
Abstract
The embodiment of the invention discloses a remote data mirror image processing system and a method, wherein the system comprises: the system comprises a mirror image source switch, a mirror image destination switch and a monitoring server; the monitoring server provides a mirror image transmission request; establishing a response relation between a mirror image source switch and a mirror image destination switch to acquire corresponding path information; setting an entry strategy of a mirror image source port to match a target data flow, acquiring a local mirror image of the target data flow, and encapsulating the local mirror image according to path information to obtain a mirror image message; the mirror image destination switch identifies and transmits a mirror image message to the monitoring server; the monitoring server is provided with a program for unsealing the mirror image message. The method is applicable to the system. The embodiment of the invention can improve the data flow encapsulation capacity by a local mirror image encapsulation mode of the switch; by means of program encapsulation, the decapsulation capability can be improved, the limitation of the existing encapsulation and decapsulation capabilities can be overcome, and the control capability of the data stream is improved.
Description
Technical Field
The invention relates to the technical field of routing, in particular to a remote data mirror image processing system and a remote data mirror image processing method.
Background
Generally, a message to be monitored is copied to a mirror destination port in a message mirror mode when monitoring the flow in the network. Then, the network administrator analyzes the message received by the monitoring server by using a message analysis tool, so as to master the flow information in the network.
The mirroring techniques commonly used by network administrators can be divided into two categories: local mirroring and remote mirroring. Local mirroring requires that the mirror source port and the mirror destination port must be on the same switch; the mirror source port and the mirror destination port of the remote mirror are generally on different switches, and are connected with each other through a two-layer or three-layer network.
Remote mirroring across a three-tier network typically employs ERSPAN (Encapsulated Remote Switched Port Analyzer Remote Port mirroring) technology. The technology can encapsulate the message of the image source port into the GRE head, then cross the IP network, and finally send to the image destination port of the far end. The network topology used by the ERSPAN technology is divided into three categories according to functions: a mirror source switch, an intermediate IP network, and a mirror destination switch. There are two implementation methods of ERSPAN: the encapsulation and the de-encapsulation of the mirror image message are realized by the exchange chip; and the other method is that the encapsulation and the de-encapsulation of the mirror image message are realized by software. In practical application, due to the limitation of the encapsulation and decapsulation capabilities of the switch, the conventional ERSPAN implementation method only supports remote port mirroring, does not support remote flow mirroring, and is not beneficial to monitoring.
Disclosure of Invention
The present invention is directed to at least alleviating one of the technical problems in the prior art. Therefore, the invention provides a remote data mirroring method and system.
In a first aspect, an embodiment of the present invention provides a remote data mirroring processing system, including: the system comprises a mirror image source switch, a mirror image destination switch and a monitoring server; the monitoring server provides a mirror image transmission request; establishing a response relation between a mirror image source switch and a mirror image destination switch to acquire corresponding path information; setting an entry strategy of a mirror image source port to match a target data flow, acquiring a local mirror image of the target data flow, and encapsulating the local mirror image according to path information to obtain a mirror image message; the mirror image destination switch identifies and transmits a mirror image message to the monitoring server; the monitoring server is provided with a program for unsealing the mirror image message.
The remote data mirror image processing method of the embodiment of the invention at least has the following beneficial effects: the local mirror image is encapsulated by the switch, so that the encapsulation capacity of the data stream can be improved; by means of program encapsulation, the decapsulation capability can be improved, the limitation of the existing encapsulation and decapsulation capabilities can be overcome, and the control capability of the data stream is improved.
According to the remote data mirror image processing system of the other embodiments of the present invention, the monitoring server is provided with an interactive interface, the interactive interface includes a plurality of data source nodes, and a mirror image transmission request is made by selecting different data source nodes; correspondingly, the mirror image source switch establishes a corresponding entry strategy according to the mirror image transmission request to match the target data stream. Through the interactive interface, the mirror image transmission request can be rapidly provided, the monitoring timeliness is improved, and the requirement on the technical background of a manager providing the mirror image transmission request is reduced.
According to other embodiments of the present invention, a remote data mirroring processing system, the mirror source switch includes a switch chip, the switch chip is configured to encapsulate a value of a register with a local mirror, the value of the register includes an Ethernet header, a GRE header, and an ERSPAN header. Through the exchange chip, the package based on the ERSPAN can be realized, and various packages can be distinguished, so that the occupation of data transmission is reduced.
According to another embodiment of the present invention, a remote data mirroring processing system establishes a response relationship between a mirroring source switch and a mirroring destination switch in a broadcast manner. The response relation is established in a broadcasting mode, so that the establishment of the response relation can be ensured, and the operation stability of the system is improved.
In a second aspect, an embodiment of the present invention provides a remote data mirroring method, including: a mirror image transmission request is put forward; establishing a response relation between the switches, and acquiring corresponding path information; setting an entrance strategy to match the target data flow, acquiring a local mirror image of the target data flow, and packaging the local mirror image according to the path information to obtain a mirror image message; and identifying and transmitting the mirror image message to a monitoring server, wherein the monitoring server is provided with a program for decapsulating the mirror image message.
The remote data mirror image processing method of the embodiment of the invention at least has the following beneficial effects: the local mirror image is encapsulated by the switch, so that the encapsulation capacity of the data stream can be improved; by means of program encapsulation, the decapsulation capability can be improved, the limitation of the existing encapsulation and decapsulation capabilities can be overcome, and the control capability of the data stream is improved.
According to other embodiments of the present invention, a remote data mirroring method includes: setting an interactive interface, wherein the interactive interface comprises a plurality of data source nodes, and a mirror image transmission request is made by selecting different data source nodes; correspondingly, a corresponding entry strategy is established according to the mirror image transmission request so as to match the target data flow.
According to other embodiments of the present invention, a remote data mirroring method includes: encapsulating the value of the register with the local image, the value of the register including an Ethernet header, a GRE header, and an ERSPAN header.
According to other embodiments of the present invention, a remote data mirroring method includes: and establishing the response relation between the switches in a broadcasting mode.
Drawings
FIG. 1 is a connection diagram of one embodiment of a remote data mirroring processing system in accordance with an embodiment of the present invention;
FIG. 2 is a flow diagram of one embodiment of a remote data mirroring method in accordance with the present invention;
fig. 3 is a flowchart of an embodiment of a remote data mirror update process flow according to the invention.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Example 1.
Referring to fig. 1, a remote data mirroring processing system according to an embodiment of the present invention is shown, including:
a mirror image source switch 1, a mirror image destination switch 2 and a monitoring server 3; wherein, the monitoring server 3 provides a mirror image transmission request; establishing a response relation between the mirror image source switch 1 and the mirror image destination switch 2 to acquire corresponding path information; setting an entry strategy of a mirror image source port to match a target data flow, acquiring a local mirror image of the target data flow, and encapsulating the local mirror image according to path information to obtain a mirror image message; the mirror image destination switch 2 identifies and transmits a mirror image message to the monitoring server 3; the monitoring server 3 is provided with a program for decapsulating the mirror message.
The mirror image source switch is used for connecting the data source and transmitting the data output by the data source to a specified address. The data source is the starting point for initiating data transfer. In this embodiment, one of the main roles of the mirror destination switch is to send the mirror file to the monitoring server. The monitoring server is mainly used for unsealing the mirror image file and displaying corresponding information.
In practice, there will not be only a single switch (including mirrored source and mirrored destination switches), but the addresses to which different switches are connected may be different, requiring the correct switch to be determined to form the path of the transmission. Thus, the relationship is answered to obtain path information; the specific path information may include information of a source MAC address, a (data) source IP address, a destination MAC address, a destination IP address, an egress port, and the like. The entry Policy (Ingress Policy), which is used in this embodiment, is mainly to monitor a specific data flow through a certain matching rule (including quintuple, protocol type, message content characteristic, and the like). In a particular mirrored source switch, a flow Action (Action) is set to send a message (i.e., a data flow) to a designated port in a local mirroring manner. The local image will be encapsulated by ERSPAN and GRE to distinguish normal traffic without affecting the transmission of other traffic. The processing capacity of the monitoring server is stronger than that of the switch, and the monitoring server carries out unsealing through the corresponding program instead of putting the unsealing on the switch, so that the burden on the switch can be reduced.
The remote data mirror image processing method of the embodiment of the invention at least has the following beneficial effects: the local mirror image is encapsulated by the switch, so that the encapsulation capacity of the data stream can be improved; by means of program encapsulation, the decapsulation capability can be improved, the limitation of the existing encapsulation and decapsulation capabilities can be overcome, and the control capability of the data stream is improved.
According to the remote data mirror image processing system of other embodiments of the present invention, the monitoring server 3 is provided with an interactive interface, the interactive interface includes a plurality of data source nodes, and a mirror image transmission request is made by selecting different data source nodes; correspondingly, the mirror source switch 1 establishes a corresponding entry policy according to the mirror transmission request to match the target data stream. The data source node is the visual mark of the data source.
The network management on the monitoring server operates in a dragging, pulling, dragging and other modes to establish end-to-end remote mirror image service, so that the method is convenient for people in the general technical background to use. Through the interactive interface, the mirror image transmission request can be rapidly provided, the monitoring timeliness is improved, and the requirement on the technical background of a manager providing the mirror image transmission request is reduced.
According to another embodiment of the present invention, the mirror source switch 1 includes a switch chip, and the switch chip is configured to encapsulate a value of a register with the local mirror, where the value of the register includes an Ethernet header, a GRE header, and an ERSPAN header. Through the exchange chip, the package based on the ERSPAN can be realized, and various packages can be distinguished, so that the occupation of data transmission is reduced.
According to the remote data mirroring processing system according to another embodiment of the present invention, the response relationship between the mirroring source switch 1 and the mirroring destination switch 2 is established in a broadcast manner.
Considering that there is not always an end-to-end path, it is necessary to check whether there is an end-to-end path reachable between the mirroring source switch and the mirroring destination switch, and obtain information of the mirroring destination switch. If not, the answer of the target exchanger is tried to be obtained by using a broadcasting mode. And the response relation is established in a broadcasting mode, so that the establishment of the response relation can be ensured, and the operation stability of the system is improved.
One embodiment of the present invention provides a remote data mirroring method as shown in fig. 2, including:
s01, making mirror image transmission request;
s02, establishing a response relation between the switches, and acquiring corresponding path information;
s03, setting an entrance strategy to match the target data flow, acquiring a local mirror image of the target data flow, and encapsulating the local mirror image according to the path information to obtain a mirror image message;
and S04, identifying and transmitting the mirror image message to a monitoring server, wherein the monitoring server is provided with a program for decapsulating the mirror image message.
The remote data mirror image processing method of the embodiment of the invention at least has the following beneficial effects: the local mirror image is encapsulated by the switch, so that the encapsulation capacity of the data stream can be improved; by means of program encapsulation, the decapsulation capability can be improved, the limitation of the existing encapsulation and decapsulation capabilities can be overcome, and the control capability of the data stream is improved.
According to other embodiments of the present invention, a remote data mirroring method includes: setting an interactive interface, wherein the interactive interface comprises a plurality of data source nodes, and a mirror image transmission request is made by selecting different data source nodes; correspondingly, a corresponding entry strategy is established according to the mirror image transmission request so as to match the target data flow.
According to other embodiments of the present invention, a remote data mirroring method includes: encapsulating the value of the register with the local image, the value of the register including an Ethernet header, a GRE header, and an ERSPAN header.
According to other embodiments of the present invention, a remote data mirroring method includes: and establishing the response relation between the switches in a broadcasting mode.
Example 2.
The purpose of this embodiment is to describe and explain the remote data mirroring process flow:
step one, through the network management (interface) on the monitoring server, drag, draw, set up the end-to-end far-end mirror image business, easy to use. (end-to-end here is data source to data source, and data source to switch is also possible, of course)
And step two, checking whether an end-to-end path exists between the mirror image source switch and the mirror image destination switch according to the connection of the end-to-end in the step one, and obtaining the information of the mirror image destination switch. If not, the answer of the corresponding mirror destination switch is tried to be obtained by using a broadcasting mode.
And step three, acquiring forwarding path information on the mirror image source switch according to the information of the mirror image destination switch acquired in the step two, wherein the forwarding path information comprises information of a source MAC address, a source IP address, a destination MAC address, a destination IP address, an output port and the like.
Step four, according to the forwarding path information and the mirror image source address and the destination address obtained in the step three, setting a switching chip for message packaging: the value of the register (including the Ethernet header, GRE header, ERSPAN header), and the egress port of the remote mirror.
Step five, setting an Ingress Policy (Ingress Policy), matching data streams to be monitored (matching rules may include quintuple, protocol type, message content characteristics, and the like), and setting a stream behavior (Action) to send the message of the mirroring source port to the egress port of the remote mirroring in the step four in a local mirroring manner. When the local mirror image is transmitted to the output port of the remote mirror image in the fourth step, the message is encapsulated by the switching chip plus the ERSPAN and the GRE to distinguish the normal service, and the transmission of other services can not be influenced.
Step six, setting entry policies (Ingress policies) of all ports on the mirror destination switch, matching the messages which are in accordance with the rules (the matching rules comprise quintuple, protocol type, message content characteristics and the like), carrying the messages encapsulated by ERSPAN and GRE, and setting flow behavior to redirect the matched messages to the mirror destination port.
And step seven, connecting the mirror image destination port to a monitoring server, identifying the ERSPAN protocol type (0x88BE) in the message by a software algorithm after the monitoring server receives the mirror image message with the package, stripping the outer package, and then analyzing the inner message according to the format of the Ethernet message. The monitoring server presents the analyzed message in the form of network management, and the message is the message needing mirroring.
The present embodiment is also directed to describing and illustrating the remote data mirror update process flow shown in fig. 3:
s1, setting a routing relation between the mirror image source device (mirror image source switch) and the mirror image target device (mirror image destination switch);
s2, configuring parameters of the mirror image source device, namely updating the next hop execution information of the remote mirror image;
s3, updating the port strategy of the image source (of the equipment);
s4, the intermediate switch performs data transmission;
s5, the mirror image destination device redirects the mirror image message with encapsulation;
s6, the monitoring server decapsulates the mirror image message;
and S7, the monitoring server analyzes the unpacked message.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (6)
1. A remote data mirroring system, comprising:
the system comprises a mirror image source switch, a mirror image destination switch and a monitoring server; wherein the content of the first and second substances,
the monitoring server is provided with an interactive interface, the interactive interface comprises a plurality of data source nodes, and mirror image transmission requests are provided by selecting different data source nodes;
establishing a response relation between the mirror image source switch and the mirror image destination switch to acquire corresponding path information;
the mirror image source switch establishes a corresponding entrance strategy according to the mirror image transmission request to match a target data flow, obtains a local mirror image of the target data flow, and encapsulates the local mirror image according to the path information to obtain a mirror image message;
the mirror image destination switch identifies and transmits the mirror image message to the monitoring server;
and the monitoring server is provided with a program for unsealing the mirror image message.
2. The remote data mirroring processing system of claim 1, wherein the mirror source switch comprises a switch chip to encapsulate a value of a register with the local mirror, the value of the register comprising an Ethernet header, a GRE header, and an ERSPAN header.
3. The remote data mirroring processing system according to claim 1, wherein the answering relationship between the mirroring source switch and the mirroring destination switch is established in a broadcast manner.
4. The remote data mirror processing method is characterized by comprising the following steps:
setting an interactive interface, wherein the interactive interface comprises a plurality of data source nodes, and a mirror image transmission request is made by selecting different data source nodes;
establishing a response relation between the switches, and acquiring corresponding path information;
establishing a corresponding entry strategy according to the mirror image transmission request to match a target data flow, acquiring a local mirror image of the target data flow, and packaging the local mirror image according to the path information to obtain a mirror image message;
and identifying and transmitting the mirror image message to a monitoring server, wherein the monitoring server is provided with a program for de-encapsulating the mirror image message.
5. The remote data mirroring method of claim 4, comprising:
encapsulating a value of a register with the local image, the value of the register including an Ethernet header, a GRE header, and an ERSPAN header.
6. The remote data mirroring method of claim 4, comprising:
and establishing the response relation between the switches in a broadcasting mode.
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| CN112787949B (en) * | 2020-09-17 | 2023-05-16 | 中兴通讯股份有限公司 | Flow acquisition and delivery management method, control device and storage medium |
| CN112468416B (en) * | 2020-10-23 | 2022-08-30 | 曙光网络科技有限公司 | Network flow mirroring method and device, computer equipment and storage medium |
| CN112653628B (en) * | 2020-12-23 | 2022-07-12 | 新华三技术有限公司 | ERSPAN method and network equipment |
| CN115242677B (en) * | 2021-04-23 | 2023-09-01 | 中国移动通信集团四川有限公司 | Home-wide user state monitoring system, method and device |
| CN113784236B (en) * | 2021-11-11 | 2022-02-18 | 深圳华锐金融技术股份有限公司 | Distributed data acquisition monitoring method, device, equipment and medium |
| CN114567458A (en) * | 2021-12-02 | 2022-05-31 | 杭州盈高科技有限公司 | System and method for quickly identifying monitoring equipment |
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