CN113852497B - ICMP-based VPN acceleration channel network quality detection system - Google Patents
ICMP-based VPN acceleration channel network quality detection system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5003—Managing SLA; Interaction between SLA and QoS
- H04L41/5009—Determining service level performance parameters or violations of service level contracts, e.g. violations of agreed response time or mean time between failures [MTBF]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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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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Abstract
The invention discloses a VPN acceleration channel network quality detection system and method based on ICMP. The management platform in the system sends an instruction comprising starting detection of two ICMP Echo Request request messages, after the IP heads of the two request messages are set to different TOS fields by the TOS setting module, the request messages are periodically sent to the VPN node server by the routing management module through an accelerating channel and a non-accelerating channel respectively, and the network quality parameter calculation module calculates time delay, packet loss rate and average jitter of the accelerating channel and the non-accelerating channel based on two ICMP Echo Response response messages returned by the VPN node server through the accelerating channel and the non-accelerating channel respectively, so as to monitor network quality. The network quality detection system and the network quality detection method can detect more comprehensive network quality parameters more accurately and timely, and are beneficial to timely finding out network anomalies.
Description
Technical Field
The invention relates to the field of Internet, in particular to a VPN acceleration channel network quality detection system and method based on an Internet control message protocol ICMP.
Background
In real-time application of the internet, problems such as network delay, packet loss, jitter and the like often occur. Most applications are very sensitive to such problems, and if frequent occurrence occurs, the normal operation of the system and normal development of the service are affected, resulting in poor user experience. For this reason, application of acceleration techniques is beginning to be widely used. The main mode is that an acceleration channel is established through VPN technology to ensure network quality, and the application requirements of low time delay, zero packet loss and low jitter are met.
Acceleration service providers providing application acceleration services often need to detect and monitor the quality of the acceleration channel network, and users also need to know the quality of the acceleration channel network. In the prior art, the network quality detection usually adopts a TCP protocol stack packet grabbing mode, which is only detection aiming at the traffic actually used by a user, and cannot detect the packet loss rate and average jitter data of a channel. Such network quality detection is incomplete and inaccurate.
Therefore, a system and a method for detecting network quality of a VPN acceleration channel are needed, which can timely detect more network quality parameters such as time delay, packet loss rate, average jitter and the like, help acceleration service providers timely find network abnormality of the acceleration channel and guide expansion, and simultaneously display comprehensive information of the network quality of the acceleration channel to users in real time.
Disclosure of Invention
This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter; nor is it intended to be used to determine or limit the scope of the claimed subject matter.
The invention can detect more network quality parameters such as time delay, packet loss rate, average jitter and the like by actively transmitting the ICMP packet to the VPN service node by the gateway. In addition, by simultaneously sending two ICMP packets to the acceleration channel and the non-acceleration channel, the invention can avoid the influence of other network factors on the detection result compared with the situation that two packets are sent to the acceleration channel and the non-acceleration channel successively. The invention can detect the network quality between the real-time gateway and the VPN node server, help the acceleration service provider to find the network abnormality of the acceleration channel in time and guide the acceleration service provider to expand the VPN channel in time, and can display the network quality of the acceleration channel to the user in real time so as to enhance the perception of the user on the network quality of the acceleration channel.
Specifically, after the user starts VPN tunnel network quality detection by using his APP or by at the management platform, the management platform sends start detection instruction information to the gateway acceleration plug-in. In order to provide more visual contrast for users and avoid the influence of other network factors, the gateway sets TOS for the two ICMP Echo Request request messages through the iptables tool, and the route management module periodically forwards the two ICMP Echo Request request messages to the accelerating channel and the non-accelerating channel respectively according to the strategy route, and calculates the time delay, the packet loss rate and the average jitter of the accelerating channel and the non-accelerating channel through ICMP Echo Response response messages. The gateway acceleration plugin reports the time delay, the packet loss rate and the average jitter data of the acceleration channel and the non-acceleration channel to the management platform, and the management platform monitors the network quality of the acceleration channel according to the data and timely discovers the network abnormality of the acceleration channel; and meanwhile, the management platform forwards the data to the user APP, and the network quality of the acceleration channel is displayed to the user in real time.
The invention discloses a VPN acceleration channel network quality detection method based on ICMP, which comprises the following steps: the method comprises the steps of sending a detection starting instruction, wherein the instruction comprises two ICMP Echo Request request messages, a time period t1 for sending ICMP data packets, a time period t2 for calculating network quality and a time period t3 for reporting data to a management platform by a gateway acceleration plug-in; setting the IP heads of the two ICMP Echo Request request messages to different TOS fields; the method comprises the steps of periodically sending two ICMP Echo Request request messages which are arranged to an accelerating channel and a non-accelerating channel respectively based on policy routing; receiving ICMP Echo Response response messages returned through the acceleration channel and the non-acceleration channel respectively; calculating the time delay, the packet loss rate and the average jitter of an acceleration channel and a non-acceleration channel based on ICMP Echo Response response messages, wherein the time delay is the time difference from sending ICMP Echo Request request messages to receiving ICMP Echo Response response messages, the packet loss rate is the ratio of the overtime or undelivered ICMP Echo Response response messages in the total ICMP Echo Request request message number in a time period t2 for calculating the network quality, the average jitter is the average value of all packet jitters, and each packet jitters is the difference value between the time delay of a packet in the current detection period and the time delay of a packet in the last detection period; and monitoring the network quality of the acceleration channel based on the calculation result.
The method further comprises the steps of sending a detection starting instruction after receiving the self-service detection request of the user, and displaying the network quality of the acceleration channel to the user in real time.
The invention relates to an ICMP-based VPN acceleration channel network quality detection system, which comprises a management platform, a gateway acceleration plug-in and a VPN node server, wherein an acceleration channel is established between the gateway acceleration plug-in and the VPN node server, wherein:
The management platform is in communication connection with the gateway acceleration plug-in, and is used for sending an instruction comprising two ICMP Echo Request request messages for starting detection to the gateway acceleration plug-in, receiving the calculated time delay, the packet loss rate and the average jitter of the acceleration channel and the non-acceleration channel from the gateway acceleration plug-in, and monitoring the network quality;
the gateway acceleration plug-in further comprises a TOS setting module, a route management module and a network quality parameter calculation module, wherein: the TOS setting module is used for setting the IP heads of the two ICMP Echo Request request messages into different TOS fields; the route management module periodically sends the two set ICMP Echo Request request messages to the VPN node server through the accelerating channel and the non-accelerating channel at the same time; and the network quality parameter calculation module calculates time delay, packet loss rate and average jitter of the acceleration channel and the non-acceleration channel based on two ICMP Echo Response response messages returned by the VPN node server through the acceleration channel and the non-acceleration channel respectively.
The system of the present invention further includes a client communicatively coupled to the management platform for initiating a self-service probe request to the management platform while also receiving network quality monitoring information for the acceleration channel from the management platform.
These and other features and advantages will become apparent upon reading the following detailed description and upon reference to the associated drawings. It is to be understood that both the foregoing general description and the following detailed description are explanatory only and are not restrictive of aspects as claimed.
Drawings
The invention will be described in more detail hereinafter with reference to specific embodiments shown in the drawings.
FIG. 1 is a flow chart of a VPN acceleration channel network quality detection method based on the Internet control message protocol ICMP of the present invention;
Fig. 2 is a block diagram of a VPN acceleration channel network quality detection system based on the internet control message protocol ICMP according to the present invention.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods according to 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).
Detailed Description
The application will be described in more detail hereinafter with reference to specific embodiments shown in the drawings. Various advantages and benefits of this application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the specific embodiments. It should be understood, however, that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. The following embodiments are provided to enable a more thorough understanding of the present application. Unless otherwise defined, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.
Fig. 1 is a flow chart of a VPN acceleration channel network quality detection method according to the present invention.
In step S110, network quality detection is started, and the starting may be initiated by the management platform, or may be initiated by the management platform after a user initiates a self-service detection request through the client APP thereof, and the request is sent to the management platform.
In step S120, the management platform sends an instruction to start probing to the gateway acceleration plug-in. The instruction comprises a time period t1 for sending ICMP data packets, a time period t2 for calculating time delay, packet loss rate and average jitter, and a time period t3 for reporting data to the management platform by the gateway acceleration plug-in. The instruction includes two ICMP Echo Request request messages.
In step S130, the gateway acceleration plug-in sets the service type field TOS for the ICMP Echo Request message.
To provide a more intuitive contrast while avoiding other network factors, the gateway acceleration plug-in sets the IP header of two ICMP Echo Request request messages to different TOS fields (setsockopt (softfd, IPPROTO _ip, ip_tos) & TOS, sizeof (TOS)) via the iptables tool. For example, the TOS field of one ICMP Echo Request packet IP header is set to 0X08 (int tos=0x08), and the TOS field of the other ICMP Echo Request packet IP header is set to 0X09 (int tos=0x09).
In S140, the routing management module determines ICMP Echo Request the TOS field of the IP header of the request packet through policy routing (a packet routing forwarding mechanism that is more flexible than routing based on the target network), and periodically sends two ICMP Echo Request request packets with different TOS fields of the IP header to the VPN node server through the acceleration channel and the non-acceleration channel, respectively. For example, ICMP Echo Request request packets with TOS field of 0X08 in the IP header are sent to the VPN node server via the acceleration channel (IP ru add from all TOS 0x08 loopup main IP ru add from all lookup), and ICMP Echo Request request packets with TOS field of 0X09 in the IP header are sent to the VPN node server via the non-acceleration channel.
At S150, the VPN node server returns two ICMP Echo Response reply messages returned via the acceleration channel and the non-acceleration channel, respectively, to the gateway acceleration plug-in.
In S160, the gateway acceleration plug-in calculates delay, packet loss rate, average jitter, etc. of the acceleration channel and the non-acceleration channel through ICMP Echo Request request message and ICMP Echo Response response message. The method comprises the following steps:
Delay time: sending ICMP Echo Request a request message to the time difference of receiving ICMP Echo Response response message;
Packet loss rate R lost: in the time period t2, the ratio of the timeout or undelivered ICMP Echo Response response message number P error in the total ICMP Echo Request request message number P all is calculated as follows:
Average jitter J avg: jitter J i is the difference between the delay D i of the packet in the current probing period and the delay D i-1 of the packet in the last probing period. The average jitter is the average value of all packet jitter, and the calculation formula is:
Wherein n is an integer, the number of detection periods is represented, i is an integer from 1 to n, and the ith detection period is represented.
In S170, the gateway acceleration plugin reports the calculated delays, packet loss rates, average jitter, and the like of the acceleration channel and the non-acceleration channel to the management platform.
In S180, the management platform monitors the network quality of the acceleration channel according to the time delay, packet loss rate, average jitter, etc. of the acceleration channel and the non-acceleration channel, and timely discovers anomalies, and forwards these information to the user APP for display to the user, so as to enhance the perception of the user to the network quality of the acceleration channel.
Fig. 2 is a block diagram of a VPN acceleration channel network quality detection system according to the present invention.
The system includes a management platform 220, a gateway acceleration plug-in 230, and a VPN node server 240.
The management platform 220 is communicatively connected to the gateway acceleration plugin 230, and is configured to send an instruction to start probing to the gateway acceleration plugin 230, and receive, from the gateway acceleration plugin 230, the calculated network quality parameters such as delay, packet loss rate, average jitter, etc. of the acceleration channel and the non-acceleration channel.
The gateway acceleration plug-in 230 includes a TOS setting module 231, a route management module 233, and a network quality parameter calculation module 232. Gateway acceleration plug-in 230 is communicatively coupled to VPN node server 240, establishing an acceleration channel therebetween.
The TOS field setting is performed on two ICMP Echo Request request messages by the TOS setting module 231 in the gateway acceleration plug-in 230.
The route management module 233 periodically sends the two ICMP Echo Request request messages set by TOS to the VPN node server through the acceleration channel and the non-acceleration channel according to the policy route.
The network quality parameter calculation module 232 calculates network quality parameters such as delay, packet loss rate, average jitter and the like of the acceleration channel and the non-acceleration channel based on two ICMP Echo Response response messages returned by the VPN node server through the server acceleration channel and the non-acceleration channel respectively.
The system may also include a client 210 of the user. The user initiates a self-service probe request to the management platform 220 through the APP of the client 210, and also receives network quality monitoring information of the acceleration channel from the management platform 220.
The gateway acceleration plug-in unit is used for actively transmitting the ICMP packet to the VPN service node, so that more network quality parameters such as time delay, packet loss rate, average jitter and the like can be detected; by simultaneously sending two ICMPs to the acceleration channel and the non-acceleration channel, respectively, the influence of other network factors on the detection result can be avoided.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description.
Claims (10)
1. A VPN acceleration channel network quality detection method based on ICMP includes:
Sending a start detection instruction, wherein the instruction comprises two ICMP Echo Request request messages;
Setting the IP heads of the two ICMP Echo Request request messages to different TOS fields;
Periodically sending the two ICMP Echo Request request messages after setting to an acceleration channel and a non-acceleration channel respectively;
receiving ICMP Echo Response response messages returned through the acceleration channel and the non-acceleration channel respectively;
Calculating the time delay, the packet loss rate and the average jitter of the acceleration channel and the non-acceleration channel based on the ICMP Echo Response response message; and
And monitoring the network quality of the acceleration channel based on the calculation result.
2. The method of claim 1, wherein the instructions include a time period t1 for transmitting ICMP packets, a time period t2 for calculating network quality, and a time period t3 for the gateway acceleration plug-in to report data to the management platform.
3. The method of claim 1 wherein the delay is a time difference between sending ICMP Echo Request the request message and receiving ICMP Echo Response the reply message.
4. The method of claim 1 wherein the packet loss rate is a ratio of a timeout or a number of undelivered ICMP Echo Response response messages to a total ICMP Echo Request request message number in a time period t2 of calculating network quality.
5. The method of claim 1, wherein the average jitter is an average of all packet jitters, each packet jitter being a difference between a time delay of a packet in a current probing period and a time delay of a packet in a last probing period.
6. The method of claim 1, wherein periodically sending two ICMP Echo Request request messages simultaneously to the acceleration channel and the non-acceleration channel, respectively, is based on policy routing.
7. The method of claim 1, further comprising sending a start probe instruction after receiving a self-service probe request from a user, and presenting the network quality of the acceleration channel to the user in real time.
8. The utility model provides a VPN acceleration channel network quality detection system based on ICMP, includes management platform, gateway acceleration plug-in components and VPN node server, gateway acceleration plug-in components with establish between the VPN node server has acceleration channel, wherein:
the management platform is in communication connection with the gateway acceleration plugin and is used for sending an instruction comprising two ICMP Echo Request requests for starting detection of a message to the gateway acceleration plugin, receiving the calculated time delay, the packet loss rate and the average jitter of the acceleration channel and the non-acceleration channel from the gateway acceleration plugin and monitoring the network quality;
the gateway acceleration plug-in further comprises a TOS setting module, a route management module and a network quality parameter calculation module, wherein:
the TOS setting module is configured to set the IP headers of the two ICMP Echo Request request messages to different TOS fields;
The route management module periodically sends the two set ICMP Echo Request request messages to the VPN node server through an accelerating channel and a non-accelerating channel at the same time; and
And the network quality parameter calculation module calculates time delay, packet loss rate and average jitter of the acceleration channel and the non-acceleration channel through two ICMP Echo Response response messages respectively returned by the server acceleration channel and the non-acceleration channel.
9. The system of claim 8, further comprising a client communicatively coupled to the management platform for initiating a self-service probe request to the management platform while also receiving network quality monitoring information for the acceleration channel from the management platform.
10. The system of claim 8, wherein,
The time delay is the time difference from sending ICMP Echo Request the request message to receiving ICMP Echo Response the response message;
The packet loss rate is the ratio of the number of the overtime or undelivered ICMP Echo Response response messages in the total ICMP Echo Request request messages in the time period of calculating the network quality; and
The average jitter is an average value of all packet jitter, and each packet jitter is a difference value between the time delay of a packet in a current detection period and the time delay of a packet in a last detection period.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111073661.3A CN113852497B (en) | 2021-09-14 | 2021-09-14 | ICMP-based VPN acceleration channel network quality detection system |
| PCT/CN2022/097342 WO2023040366A1 (en) | 2021-09-14 | 2022-06-07 | Icmp-based vpn acceleration channel network quality detection system |
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| CN202111073661.3A CN113852497B (en) | 2021-09-14 | 2021-09-14 | ICMP-based VPN acceleration channel network quality detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101242318A (en) * | 2008-03-14 | 2008-08-13 | 华为技术有限公司 | Method and device for getting network connection quality information of network node |
| CN111130822A (en) * | 2018-10-31 | 2020-05-08 | 中国电信股份有限公司 | Communication method, device, system and computer readable storage medium |
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| US20070250625A1 (en) * | 2006-04-25 | 2007-10-25 | Titus Timothy G | Real-time services network quality control |
| CN106656800B (en) * | 2017-02-21 | 2020-04-14 | 网宿科技股份有限公司 | Path selection method and system, network acceleration node and network acceleration system |
| CN112511454A (en) * | 2020-10-14 | 2021-03-16 | 网宿科技股份有限公司 | Method, system and device for detecting network quality |
| CN112311628B (en) * | 2020-10-30 | 2023-02-24 | 中移（杭州）信息技术有限公司 | Network speed measuring method, system, network equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101242318A (en) * | 2008-03-14 | 2008-08-13 | 华为技术有限公司 | Method and device for getting network connection quality information of network node |
| CN111130822A (en) * | 2018-10-31 | 2020-05-08 | 中国电信股份有限公司 | Communication method, device, system and computer readable storage medium |
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