CN115442282B - Data acquisition system and method - Google Patents
Data acquisition system and method Download PDFInfo
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- CN115442282B CN115442282B CN202211062560.0A CN202211062560A CN115442282B CN 115442282 B CN115442282 B CN 115442282B CN 202211062560 A CN202211062560 A CN 202211062560A CN 115442282 B CN115442282 B CN 115442282B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/12—Network monitoring probes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/06—Generation of reports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The application provides a data acquisition system, which relates to the technical field of network telemetry and comprises the following components: a switch and an analyzer, the switch comprising a switch chip with programmable functions and a telemetry module; the exchange chip is used for grabbing and uploading messages based on the node function mode of the exchanger, inserting, replacing and stripping telemetry information and forwarding the messages; the telemetry module is used for assembling the messages sent by the exchange chip to generate telemetry reports, and then sending the telemetry reports to the analyzer; the analyzer is used for receiving the telemetry report sent by the telemetry module for analysis and restoring a path through which a message passes according to the telemetry report sent by each switch on the path; according to the application, the analyzer restores the path of a message and the telemetry data acquired on the path according to the telemetry report, thereby realizing the end-to-end data analysis under the conditions of single-hop data acquisition and uploading.
Description
Technical Field
The application relates to the technical field of network telemetry, in particular to a data acquisition system and a data acquisition method.
Background
In recent years, the rapid development of network technology has presented a great challenge to network management and operation. Traditional network probing techniques such as ping and traceroute methods are not very accurate in locating forwarding paths and network delays. In-band network telemetry (INT) has thus evolved. In-band network telemetry is a hybrid measurement technology, and fundamentally refers to a technology for collecting, carrying, arranging and reporting telemetry data (network equipment information) by means of data plane services, and collecting the network equipment information without using a separate control plane to manage traffic. By in-band it is meant that the information of the network device that needs to be collected is carried in an already existing message of the data plane without the need to actively generate a specific message for probing. The data acquisition of the data plane requires a programmable technology based on a switching chip.
The current telemetry standards mainly include: criteria for the data plane and criteria for telemetry reporting. Both IETF and P4 organizations currently present standards for related data planes. The IETF proposes the Inband Flow Analyzer (IFA) standard and the In-band Network Telemetry (INT) standard for P4. For a switch, implementation of both techniques requires a programmable module of the switch chip of the switch. When the data plane performs telemetry data acquisition, the operation of editing, modifying, calculating and the like is required to be performed on the message through the programmable module, so that telemetry data can be inserted into the message. The number of operating instructions and the length of data that can be operated that can be provided by the switching chip programmable module limit the implementation of the two standards in practical applications. In order to cope with the limitation of advanced technology countries of foreign chips on the development of high-salary technology in China, the research and development of autonomous exchange chips are rising.
At present, domestic independent exchange chip research and development manufacturers mainly comprise Hua Cheng, cheng Ke, nanfei microelectronics and the like. Part of products can support end-to-end data analysis in INT standard protocol, part of products are limited by factors such as chip instruction number, only can support single-hop data acquisition and uploading, and none of the products can simultaneously realize end-to-end data analysis under the condition of single-hop data acquisition and uploading.
Based on the above, the present application proposes a data acquisition system and method to solve the above-mentioned problems.
Disclosure of Invention
The application aims to provide a data acquisition system and a data acquisition method, which can simultaneously realize end-to-end data analysis under the condition of single-hop data acquisition and uploading.
The technical scheme of the application is as follows:
in a first aspect, the present application provides a data acquisition system and method, comprising a switch and an analyzer, the switch comprising a switch chip with programmable functions and a telemetry module; the exchange chip is used for grabbing and uploading messages based on the node function mode of the exchanger, inserting, replacing and stripping telemetry information and forwarding the messages; the telemetry module is used for assembling the messages sent by the exchange chip to generate telemetry reports, and then sending the telemetry reports to the analyzer; the analyzer is used for receiving the telemetry report sent by the telemetry module for analysis and restoring a path through which a message passes according to the telemetry report sent by each switch on the path; the switching chip is in communication with the telemetry module, and the analyzer is in communication with the telemetry module.
Further, the node function modes include a head node function mode, an intermediate node function mode, and a tail node function mode.
Further, the telemetry report includes: report information, collector information, packet information, and telemetry data; the report information includes a device ID and a node function mode, the collector information includes a device ID, and the packet information includes a source IP address, a destination IP address, a protocol number, a source port, a destination port, and a packet-ID.
In a second aspect, the present application provides a data acquisition method using the data acquisition system of any one of the above, characterized by comprising the steps of:
s1, collecting data through an exchanger, and receiving a telemetry report by an analyzer;
s2, classifying the telemetry report according to the packet information in the telemetry report, and defining the telemetry report with the same packet information as the telemetry report of the same message;
s3, extracting report information from the telemetry report of the same message to find a telemetry report with a node type of a tail node, creating a device table by using a device ID of collector information in the telemetry report, and inserting the device table into a path;
s4, analyzing a telemetry report with the node type being a tail node to obtain the equipment ID of the collector information in the telemetry report;
s5, traversing telemetry reports with the same device ID of report information as that of collector information in other telemetry reports of the same message by taking the device ID of the collector information as a keyword to obtain a path traversed by the message;
s6, acquiring telemetry data acquired on the path according to the path through which the same message passes, so as to realize data acquisition.
Further, the method for obtaining the path traversed by the message in step S5 includes:
judging whether the equipment type in report information of the current telemetry report is a head node, if not, creating an equipment table, inserting the equipment table into the forefront of all the equipment tables in the path, and circulating the operation; if yes, stopping searching to restore the path passed by the message.
Further, the data collected by the switch includes: TCP messages or UDP messages.
Compared with the prior art, the application has at least the following advantages or beneficial effects:
the application provides a data acquisition system and a data acquisition method, which acquire and analyze network telemetry information through a switch and an analyzer, so that the end-to-end data acquisition and analysis of one message are realized under the condition of single-hop data acquisition, and the dependence of in-band network telemetry technology on the programmable capability of a chip is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a data acquisition system according to embodiment 1 of the present application;
fig. 2 is a step diagram of a data acquisition method according to embodiment 2 of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
It should be noted that, in this document, the term "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The various embodiments and features of the embodiments described below may be combined with one another without conflict.
Example 1
The application provides a data acquisition system, which comprises a switch and an analyzer, wherein the switch comprises a switch chip with a programmable function and a telemetry module; the exchange chip is used for grabbing and uploading the message based on the node function mode of the exchanger, inserting, replacing and stripping the telemetry information and forwarding the message; the telemetry module is used for assembling the messages sent by the exchange chip to generate a telemetry report, and then sending the telemetry report to the analyzer; the analyzer is used for receiving the telemetry report sent by the telemetry module for analysis and restoring a path through which the message passes according to the telemetry report sent by each switch on the path; the exchange chip is in communication connection with the telemetry module, and the analyzer is in communication connection with the telemetry module.
Wherein the exchange chip is a BCM chip; the telemetry information includes at least the device ID.
It should be noted that, the analyzer restores the path through which a message passes according to the telemetry report sent by each switch, and the telemetry information collected by the switch on the path. The path traversed by a message is an ordered set of one or more device tables, where the order of the device tables is the order of switches traversed by the message.
In addition, the device table contains two parts, device ID and telemetry information, and the device table represents the switch through which the message passes. The device ID of the device table is the device ID of the switch represented by the device table; the telemetry information is the telemetry information in the message inserted by the exchange chip of the exchanger represented by the equipment table.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a data acquisition system according to embodiment 1 of the present application.
In fig. 1, a message is sent from a Host a to switches SWA, SWB, and SWC, and the switches assemble the sent message to generate a telemetry report, and then send the telemetry report to an analyzer, where each switch is connected to the analyzer and receives the sent telemetry report through the analyzer for analysis, and restores a path through which the message passes according to the telemetry report sent by each switch on the path, and then receives the message through the Host B.
As a preferred embodiment, the node function modes include a head node function mode, an intermediate node function mode, and a tail node function mode.
The processing rule of the exchange chip of the exchanger to the message according to the node function mode of the exchanger is as follows:
if the switch works in the head node function mode, the switch chip grabs the message passing through the equipment according to rules, copies the grabbed message to a telemetry module, inserts telemetry head and telemetry data of the equipment into the grabbed message, and finally forwards the processed message;
if the switch works in the middle node functional mode, the switch chip grabs the message with the telemetry head, copies a part of the message to be sent to the telemetry module, replaces the original telemetry data in the grabbed message with the telemetry data of the equipment, and finally forwards the message;
if the switch works in the tail node function mode, the switch chip grabs the message with the telemetry head, copies a part of the message to be sent to the telemetry module, peels off the telemetry head and telemetry data in the message, and continues to forward the message.
As a preferred embodiment, the telemetry report includes: report information, collector information, packet information, and telemetry data; the report information includes a device ID and a node function mode, the collector information includes the device ID, and the packet information includes a source IP address, a destination IP address, a protocol number, a source port, a destination port, and a packet-ID.
The device ID in the report information is the device ID of the switch which grabs the message, and the function node mode in the report information is the function node mode of the switch which grabs the message; the device ID of the collector information of the telemetry report is the device ID of the telemetry information in the captured message, and if the captured message does not contain the telemetry information, the device ID of the collector information is the device ID of the switch capturing the message; the source IP address of packet information in the telemetry report is the source IP address of the grabbed message, the destination IP address is the destination IP address of the grabbed message, the protocol number is the IP protocol number of the grabbed message, the source port is the source port of the grabbed message, the destination port is the destination port of the grabbed message, and the packet-id is the identification value of the IP header of the grabbed message; the telemetry data is telemetry data in the grabbed message, and if the grabbed message does not contain telemetry data, the telemetry report does not contain telemetry data.
It should be noted that the switch is provided with a unique device ID in the network, and the device table includes the device ID and telemetry information.
Example 2
Referring to fig. 2, fig. 2 is a step diagram of a data acquisition method according to embodiment 2 of the present application.
In a second aspect, the present application provides a data acquisition method, comprising the steps of:
s1, collecting data through an exchanger, and receiving a telemetry report by an analyzer;
s2, classifying the telemetry report according to the packet information in the telemetry report, and defining the telemetry report with the same packet information as the telemetry report of the same message;
s3, extracting report information from the telemetry report of the same message to find a telemetry report with a node type of a tail node, creating a device table by using a device ID of collector information in the telemetry report, and inserting the device table into a path;
s4, analyzing a telemetry report with the node type being a tail node to obtain the equipment ID of the collector information in the telemetry report;
s5, traversing telemetry reports with the same device ID of report information as that of collector information in other telemetry reports of the same message by taking the device ID of the collector information as a keyword to obtain a path traversed by the message;
s6, acquiring telemetry data acquired on the path according to the path through which the same message passes, so as to realize data acquisition.
The telemetry information in the equipment table in the S3 is telemetry information in a telemetry report, and the operation principle is as follows: taking the tail node as a starting point, searching forward in a circulating way until the head node is found; the device ID of report in each telemetry report of the node is the device ID of the device, the device ID of the collector is the device ID of the previous node, the searching is carried out through the pointing relation, the telemetry information in each telemetry report is collected by the previous node, namely, the device collection represented by the device ID of the collector, and the recovered whole path does not contain tail nodes.
As a preferred embodiment, the method for obtaining the path traversed by the message in step S5 further includes:
judging whether the equipment type in report information of the current telemetry report is a head node, if not, creating an equipment table, inserting the equipment table into the forefront of all the equipment tables in the path, and circulating the operation; if yes, stopping searching to restore the path passed by the message.
As a preferred embodiment, the data collected by the switch includes: TCP messages or UDP messages.
It will be appreciated that the configuration shown in the figures is illustrative only and that a data acquisition system and method may include more or fewer components than shown in the figures or have a different configuration than shown in the figures. The components shown in the figures may be implemented in hardware, software, or a combination thereof.
In the embodiments provided in the present application, it should be understood that the disclosed system or method may be implemented in other manners. The above-described embodiments are merely illustrative, for example, of the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In summary, according to the data acquisition system and method provided by the embodiment of the application, the switch and the analyzer are used for acquiring and analyzing the network telemetry information, so that the end-to-end data acquisition and analysis of one message under the condition of single-hop data acquisition are realized, and the dependence of in-band network telemetry technology on the programmable capability of a chip is reduced.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. The data acquisition method is characterized by comprising the following steps of:
s1, collecting data through an exchanger, and receiving a telemetry report by an analyzer; wherein the telemetry report includes: report information, collector information, packet information, and telemetry data; the report information comprises a device ID and a node function mode, the collector information comprises the device ID, the packet information comprises a source IP address, a destination IP address, a protocol number, a source port, a destination port and a packet-ID, and the node function mode comprises a head node function mode, an intermediate node function mode and a tail node function mode;
s2, classifying the telemetry report according to the packet information in the telemetry report, and defining the telemetry report with the same packet information as the telemetry report of the same message;
s3, extracting report information from the telemetry report of the same message to find a telemetry report with a node type of a tail node, creating a device table by using a device ID of collector information in the telemetry report, and inserting the device table into a path;
s4, analyzing a telemetry report with the node type being a tail node to obtain the equipment ID of the collector information in the telemetry report;
s5, traversing telemetry reports with the same device ID of report information as that of collector information in other telemetry reports of the same message by taking the device ID of the collector information as a keyword to obtain a path traversed by the message;
s6, acquiring telemetry data acquired on the path according to the path through which the same message passes, so as to realize data acquisition.
2. The method of claim 1, wherein the step S5 of obtaining the path traversed by the message comprises:
judging whether the equipment type in report information of the current telemetry report is a head node, if not, creating an equipment table, inserting the equipment table into the forefront of all the equipment tables in the path, and circulating the operation; if yes, stopping searching to restore the path passed by the message.
3. The method of claim 1, wherein the data collected by the switch comprises: TCP messages or UDP messages.
4. A data acquisition system based on a data acquisition method according to any one of claims 1-3, characterized in that it comprises a switch and an analyzer, said switch comprising a switching chip with programmable functions and a telemetry module; the exchange chip is used for grabbing and uploading messages based on the node function mode of the exchanger, inserting, replacing and stripping telemetry information and forwarding the messages; the telemetry module is used for assembling the messages sent by the exchange chip to generate telemetry reports, and then sending the telemetry reports to the analyzer; the analyzer is used for receiving the telemetry report sent by the telemetry module for analysis and restoring a path through which a message passes according to the telemetry report sent by each switch on the path; the exchange chip is in communication with the telemetry module, and the analyzer is in communication with the telemetry module.
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