CN114844804A - Network measurement method, system, electronic device and computer readable storage medium - Google Patents
Network measurement method, system, electronic device and computer readable storage medium Download PDFInfo
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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
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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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
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
- H04L43/0894—Packet rate
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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
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- 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
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application provides a network measurement method, a system, an electronic device and a computer readable storage medium, wherein the method comprises the following steps: sending a plurality of paths of service test messages to second equipment, wherein the service test messages are test messages with random packet lengths, so that the second equipment respectively sends reflection messages of each path of service test messages to the first equipment based on the receiving condition of each path of service test messages; respectively calculating the service bandwidth of each path of service based on the sending quantity of each path of service test message at the first equipment and the receiving quantity of each path of service test message at the second equipment; and respectively calculating the time delay of each path of service based on the sending time of each path of service test message at the first equipment and the receiving time of each path of service test message at the second equipment, and/or the sending time of each path of service test message corresponding to the reflection message at the second equipment and the receiving time of each path of service test message at the first equipment. The method and the device finish the service bandwidth and time delay measurement by using the multi-service channel, and effectively improve the accuracy of the measurement results of different service networks.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a network measurement method, a network measurement system, an electronic device, and a computer-readable storage medium.
Background
At present, the network measurement scheme for ethernet service generally uses an ethernet test meter to measure service bandwidth and delay, and it is difficult to confirm the ethernet service bandwidth and delay of a device without the test meter.
In the related art, a technical scheme is provided in which RFC2544 is enabled in an ethernet service, a tester is simulated to send a flow, and a corresponding data packet is forwarded according to a configuration issued by a control plane to implement network measurement, but link bandwidth is measured, and each link in a network actually carries a plurality of mutually independent services, so that when a new service is deployed, the problem of inaccurate measurement result of the service is caused by the network measurement scheme for the link.
Therefore, it is desirable to provide a network measurement scheme for traffic rather than link to improve the accuracy of the network measurement result.
Disclosure of Invention
In view of the foregoing problems, the present application provides a network measurement method, a system, an electronic device, and a computer-readable storage medium, so as to solve the technical problem that a network measurement result of a network measurement method for a link is inaccurate for different services.
In order to achieve the above purpose, the present application provides the following technical solutions:
in a first aspect, an embodiment of the present application provides a network measurement method, applied to a first device, including:
sending a plurality of paths of service test messages to second equipment, wherein the service test messages are test messages with random packet lengths, so that the second equipment respectively sends reflection messages of each path of service test messages to the first equipment based on the receiving condition of each path of service test messages;
respectively calculating the service bandwidth of each path of service based on the sending quantity of each path of service test message at the first equipment and the receiving quantity of each path of service test message at the second equipment;
and respectively calculating the time delay of each path of service based on the sending time of each path of service test message at the first equipment and the receiving time of each path of service test message at the second equipment, and/or the sending time of each path of service test message corresponding to the reflection message at the second equipment and the receiving time of each path of service test message at the first equipment.
In one embodiment, the multi-path service test packet includes a first path service test packet and a second path service test packet, and before sending the multi-path service test packet to the second device, the method further includes:
generating a first path of service test message based on the service characteristics of the first path of service; generating a second path of service test message based on the service characteristics of the second path of service;
the first path of service and the second path of service are Ethernet private line EVPL services with different IDs.
In one embodiment, the multi-path service test packet includes a first path service test packet and a second path service test packet, and before sending the multi-path service test packet to the second device, the method further includes:
pre-configuring a first measurement parameter of a first path of service test message and a second measurement parameter of a second path of service test message;
the sending of the multi-path service test message to the second device includes:
sending a first path of service test message to the second equipment based on the first measurement parameter, so that the second equipment sends a reflection message of the first path of service test message to the first equipment based on the first path of service test message;
and sending a second path of service test message to the second equipment based on the second measurement parameter, so that the second equipment sends a reflection message of the second path of service test message to the first equipment based on the second path of service test message.
In one embodiment, the first measurement parameter includes a first measurement packet type, a first measurement time, and a first measurement rate; the second measurement parameter includes a second measurement packet type, a second measurement time, and a second measurement rate.
In an embodiment, the sending the first path of service test packet to the second device based on the first measurement parameter includes:
taking a first test rate of an initial multiple n as an initial rate, and sending a first path of service test message of a first measurement message type to second equipment based on the initial rate, wherein n is more than 0 and less than 1;
judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at an initial speed, if so, increasing a multiple a on the basis of an initial multiple n to obtain a first current multiple m;
taking a first test rate of a first current multiple m as a first current rate, and sending the first path of service test packet to the second device based on the first current rate, where m is 0< 1, m is n + a, a is a constant, and 0< a < 1;
judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at a first current speed, if so, continuously increasing the multiple a on the basis of the first current multiple m to obtain an updated first current multiple m, and returning to execute the step of sending the first path of service test message to the second equipment based on the first current speed until the first current multiple m is 1;
and if the first measurement time is reached, stopping sending the first path of service test message to the second equipment.
In an embodiment, the sending the first path of service test packet to the second device based on the first measurement parameter further includes:
if the message receiving and sending quantity is different between the first equipment and the second equipment within the preset time period under the initial speed, reducing the multiple b on the basis of the initial multiple n to obtain a second current multiple k;
taking a first test rate of a second current multiple k as a second current rate, and sending a first path of service test message to the second device based on the second current rate, wherein k is 0< 1, k is n-b, b is a constant and 0< b < 1;
and judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at a second current speed, if so, continuing to reduce the multiple b on the basis of the second current multiple k, and returning to the step of sending the first path of service test message to the second equipment on the basis of the second current speed until the message receiving and sending quantity between the first equipment and the second equipment is the same.
In one embodiment, the calculating the time delay of each service based on the sending time of each service test packet at the first device and the receiving time of each service test packet at the second device, and/or the sending time of each service test packet at the second device and the receiving time of each service test packet at the first device respectively includes:
calculating the sending time difference of each path of test message based on the sending time of each path of test message at the first equipment and the receiving time of each path of test message at the second equipment, and respectively obtaining the one-way time delay of each path of service from the first equipment to the second equipment based on the sending time difference; and/or the presence of a gas in the gas,
calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, and respectively obtaining the one-way time delay of each path of service from the second equipment to the first equipment based on the receiving time difference; and/or the presence of a gas in the gas,
the method comprises the steps of calculating the sending time difference of each path of test message based on the sending time of each path of test message at first equipment and the receiving time of each path of test message at second equipment, calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, calculating the average value between the sending time difference and the receiving time difference, and respectively obtaining the bidirectional time delay of each path of service based on the average value between the sending time difference and the receiving time difference.
In a second aspect, an embodiment of the present application correspondingly provides a network measurement system, which is applied to a first device, and includes:
a sending module, configured to send multiple service test messages to a second device, where the multiple service test messages are test messages with random packet lengths, so that the second device sends a reflection message of each service test message to the first device based on a receiving condition of each service test message;
the bandwidth calculation module is configured to calculate the service bandwidth of each path of service respectively based on the sending quantity of the test messages of each path of service at the first device and the receiving quantity of the test messages of each path of service at the second device;
and the time delay calculation module is configured to calculate the time delay of each service based on the sending time of each service test packet at the first device and the receiving time of each service test packet at the second device, and/or the sending time of each service test packet corresponding to the reflection packet at the second device and the receiving time of each service test packet at the first device.
In a third aspect, an embodiment of the present application correspondingly provides an electronic device, including: a processor and a memory;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored by the memory to cause the electronic device to perform the network measurement method.
In a fourth aspect, embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is used to implement the network measurement method.
According to the network measurement method, the system, the electronic device and the computer readable storage medium provided by the embodiment of the application, the service bandwidth and the time delay measurement are completed through different service channels by using a mode of carrying out a multi-path service test message with a random packet length between the first device and the second device, the accuracy of network measurement results of different services is improved, the opened services are not influenced during measurement, and the influence on the network is effectively reduced.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a diagram of a possible network architecture provided by an embodiment of the present application;
fig. 2 is a schematic flowchart of a network measurement method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of another network measurement method according to an embodiment of the present application;
fig. 4 is one of the flow charts of step S201a in fig. 3;
fig. 5 is a second schematic flowchart of step S201a in fig. 3;
fig. 6 is a schematic structural diagram of a network measurement system according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
OTN (Optical Transport Network) is composed of a series of Optical Network elements connected by Optical fiber links, and can provide functions including transmission, multiplexing, routing, management, and survivability of Optical channels carrying customer signals, according to the requirements of ITU-T g.872 (2001).
The OTN device is a device having processing capabilities such as ODUk (Optical Channel Data Unit-k) intersection, packet switching, and Och (Optical Channel with full function Optical Channel) intersection, and capable of uniformly transmitting services such as TDM (time-division multiplexing) technology and packets.
After the OTN device is deployed, the service bandwidth and the time delay are detected, an ethernet test instrument is required to measure the service bandwidth and the time delay, and it is difficult to confirm the ethernet service bandwidth and the time delay of the device without the test instrument.
In an optical transport network, each OTN device usually has multiple paths of ethernet services, and after the ethernet services are opened, it is necessary to determine whether the actual service bandwidth is correct, and generally, only an ethernet meter is used for actual testing, which results in a high cost for deploying the services, and when the meter is unavailable or the deployment location is far away, it cannot be determined whether the deployed service configuration meets the actual application requirements.
In the related art, an OTN service is set on a control plane, an OTN device interface is adapted to support an STM-16/64/256, an OUT service of an OTU1/2/3, an ethernet service of a GE/10GE, a 1G/2G/4G/8G/10G FC client service access, and an STM-1/4, FE low-rate client service access, and a client-side service generates an ODUk (k is 0,1,2,2e,3,4) channel signal after being subjected to mapping multiplexing processing; then, setting contents of RFC2544 (international standard for evaluating network interconnection equipment proposed by RFC organization) including sent message, sending time, rate size and byte size at a control plane; the forwarding plane is responsible for forwarding message contents, so that messages constructed by RFC2544 are transmitted in the OTN network; enabling RFC2544 in the configured OTN service, simulating the sending flow of the tester, and forwarding a corresponding data packet according to the configuration issued by the control plane; finally, by looking at the results of RFC2544, it is known whether OTN traffic is normal, and the rate of traffic is known by the maximum throughput.
In the related art, link bandwidth is measured, and each link in the network actually carries a plurality of services independent of each other, so that when a new service is deployed, the link measurement method cannot be used, and a measurement method for services rather than links is required; in addition, the measurement packet is of a fixed packet length, while the packet in the actual network is of a random packet length, and the measurement result cannot accurately reflect the actual network condition.
In view of this, an embodiment of the present application provides a network measurement scheme, where a PRBS (Pseudo Random Sequence) signal generator and a reflector are designed to transmit a service test packet with a multi-path Random packet length, so as to perform a delay and bandwidth test on a multi-path service, and complete service bandwidth and delay measurement by using a service channel, so as to improve accuracy of a network measurement result of the service, and not affect an enabled service during measurement, thereby effectively reducing an impact on the network.
In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a diagram of a possible network architecture provided by an embodiment of the present application, as shown in fig. 1, including a first device PE1 and a second device PE2, where PE1 and PE2 are connected to each other through a wired or wireless network. Illustratively, a test network is first constructed according to a network architecture diagram, and PE1 is configured as a PRBS signal generator, that is, a PRBS module is disposed in PE1, and generates a test message and receives a reflection message of PE2, and PE2 is a (PRBS signal) reflector, and receives the test message sent by PE1 and reflects the test message to PE 1. The access Port of PE1 is Port2, the access Port of PE2 is Port4, PE1 and PE2 are interconnected through OTU ports, 2 EVPL services 1 and Service2 are created between PE1 and PE2, PE1 sends two Service test messages, i.e., Service1 tx and Service2 tx, to PE2, and PE2 reflects Service1 reflexes and Service2 reflexes to PE1 according to the received Service test messages.
Illustratively, a PE1 and a PE2 are designed in an OTN device, a PRBS signal generator corresponding to a PE1 may send multiple service measurement messages, each service test message may be configured with a feature consistent with a service to be simulated, after the test message is transmitted to a remote device according to a service configuration requirement, the test message is returned to the device where the generator is located by a signal reflector of the remote device, and a bandwidth and a delay of each measurement message may be calculated by a PE1 or a PE2 according to a sending and receiving condition of the measurement message.
The PE1 and PE2 may include, but are not limited to, a computer, a smart phone, a tablet computer, an e-book reader, a motion Picture experts group audio layer III (MP 3 for short) player, a motion Picture experts group audio layer 4 (MP 4 for short) player, a portable computer, a vehicle-mounted computer, a wearable device, a desktop computer, a set-top box, a smart television, and the like.
The above scenario schematic diagram of the present application is briefly described, and the network testing method provided in the embodiment of the present application is described in detail below by taking the first device PE1 applied in fig. 1 as an example.
Referring to fig. 2, fig. 2 is a schematic flow chart of a network testing method according to an embodiment of the present application, where the method includes steps S201 to S203.
Step S201, sending a plurality of service test messages to a second device, where the service test messages are test messages with a random packet length, so that the second device sends a reflection message of each service test message to the first device based on the receiving condition of each service test message.
Each road test packet corresponds to a random packet length test packet, that is, the range of the random packet length of different road test packets may also be different. In an embodiment, a measurement packet length interval may be configured for different services, and then a test packet with a random packet length may be sent in the length interval according to a configuration requirement according to the configured measurement packet length interval.
In an embodiment, a PE1 sends a Service1 tx at a configured first measurement rate, specifically, according to a configured measurement message length interval, sends a first Service test message Service1 tx with a random packet length according to a configuration requirement in the length interval, adds a timestamp T1 at the same time to a message header, and when a PRBS module of the PE2 receives the measurement message, adds a local timestamp T2 after a PRBS message timestamp T1, replaces a source MAC address and a destination MAC address of the test message to obtain a reflection message, sends the reflection message to the PE1, and adds a timestamp T3 after the timestamp T2 of the reflection message, where the reflection test message is a Service1 reflect, and adds a timestamp T4 when the PE1 receives a Service1 reflect message. The second Service test message Service2 tx and Service2 reflex are the same, and will not be described herein again.
Compared with the related art, the measurement message has a fixed packet length, and the message in the actual network has a random packet length, so that the measurement result cannot accurately reflect the actual network condition. The test message sent by the embodiment is a test message with a random packet length, which is closer to a message in an actual network, and the accuracy of network measurement is improved.
In an embodiment, in order to better simulate test packets corresponding to different paths of service packets to improve measurement accuracy, in this embodiment, before sending the multiple paths of service test packets to the second device (step S201), the method further includes the following steps:
generating a first path of service test message based on the service characteristics of the first path of service; generating a second path of service test message based on the service characteristics of the second path of service;
the first path of service and the second path of service are Ethernet private line EVPL services with different IDs.
In this embodiment, the first service and the second service are ethernet dedicated line EVPL services, the service characteristics correspond to the random message length of the service, and the first service and the second service are distinguished by ID and VLAN ID, for example, the service ID of the first service is 100, the VLAN ID is VLAN100, the corresponding first service test message VLAN100 is forwarded from Port2: GE to Port1: OTU1, the service ID of the second service is 200, the VLAN ID is VLAN200, and the corresponding second service test message VLAN200 is forwarded from Port2: GE to Port1: OTU 1.
Step S202, respectively calculating the service bandwidth of each path of service based on the sending quantity of each path of service test message at the first equipment and the receiving quantity of each path of service test message at the second equipment.
In one embodiment, after the measurement time is reached, PE1 calculates the traffic bandwidth of each traffic based on the number of packets sent by each traffic test packet at the first device and the number of packets received at the second device, where each traffic test may be configured with different measurement times.
In this embodiment, the service bandwidth is calculated according to the number of sent messages and the number of received messages, that is, the sending rate or the receiving rate under the condition of no packet loss is calculated, that is, the service bandwidth is calculated under the condition that the sending rate and the receiving rate are the same in this embodiment, and the specific calculation method of the service bandwidth of each path may be calculated as follows: sending rate (sum of sending message length + frame interval + number of sending messages) 8/1024 + 1024 measuring time; receiving rate (sum of length of received message + number of received messages in frame interval) 8/1024 1024; it can be understood that the frame gap, i.e. the interval between each packet, is 8 bytes to 8 bits.
Step S203, respectively calculating the time delay of each service based on the sending time of each service test packet at the first device and the receiving time of each service test packet at the second device, and/or the sending time of each service test packet corresponding to the reflection packet at the second device and the receiving time of each service test packet at the first device.
Specifically, this embodiment enumerates a process of acquiring a one-way delay and a two-way delay, and calculates a delay of each service based on a sending time of each service test packet at the first device and a receiving time of each service test packet at the second device, and/or a sending time of each service test packet corresponding to a reflection packet at the second device and a receiving time of each service test packet at the first device (step S203), including the following steps:
calculating the sending time difference of each path of test message based on the sending time of each path of test message at the first equipment and the receiving time of each path of test message at the second equipment, and respectively obtaining the one-way time delay of each path of service from the first equipment to the second equipment based on the sending time difference; and/or the presence of a gas in the gas,
calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, and respectively obtaining the one-way time delay of each path of service from the second equipment to the first equipment based on the receiving time difference; and/or the presence of a gas in the gas,
the method comprises the steps of calculating the sending time difference of each path of test message based on the sending time of each path of test message at first equipment and the receiving time of each path of test message at second equipment, calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, calculating the average value between the sending time difference and the receiving time difference, and respectively obtaining the bidirectional time delay of each path of service based on the average value between the sending time difference and the receiving time difference.
In this embodiment, timestamps T1, T2, T3, and T4 are stamped on each path of service test packet and transmission and reception of a reflection packet, when measurement time is reached, timestamps T1, T2, T3, and T4 carried in each path of packet are respectively taken out by comparing each path of packet, if only one-way time delay for transmitting the test packet needs to be obtained, T1 and T2 are obtained, that is, the one-way time delay from PE1 to PE2 of a service is T2-T1; if only the one-way time delay of sending the reflection message needs to be obtained, obtaining T3 and T4, namely the one-way time delay from PE2 to PE1 is T4-T3; if the two-way time delay of the test message and the reflection message needs to be obtained, the two-way time delay between the PE1 and the PE2 is calculated by T1, T2, T3 and T4, namely ((T2-T1) + (T4-T3))/2.
Referring to fig. 3, fig. 3 is a schematic flow chart of another network measurement method provided in this embodiment, on the basis of the previous embodiment, in this embodiment, measurement parameters are preconfigured for different services for the different services, so as to implement flexible measurement of bandwidths and delays of different service channels, specifically, the multi-path service test packet in this embodiment includes a first path service test packet and a second path service test packet, and before the multi-path service test packet is sent to a second device (step S201), the method further includes step S301, and step S201 is further divided into step S201a and step S201 b.
Step S301, a first measurement parameter of the first path of service test message and a second measurement parameter of the second path of service test message are pre-configured.
In one embodiment, the first measurement parameter includes a first measurement packet type, a first measurement time, and a first measurement rate; the second measurement parameter includes a second measurement packet type, a second measurement time, and a second measurement rate.
Illustratively, measurement parameters are configured on PE1 and PE 2: measuring message type, measuring time, measuring rate, length interval of measuring message and random packet length.
Measuring message types: the method is used for identifying the test message and the common service message; measuring the length interval of the message: the minimum byte number and the maximum byte number of the message; measuring time: duration of bandwidth and delay measurements; measuring rate: the maximum rate of measurement; measuring step length: the length of the message is increased in size, and when the random packet length function is not enabled, the length of the message is changed according to the mode of adding the initial length and the step length; random packet length: after the PRBS signal transmitting module of the PE1 is enabled, a test message with random byte number is generated in a length interval when the test message is sent.
Step S201a, sending a first path of service test packet to the second device based on the first measurement parameter, so that the second device sends a reflection packet of the first path of service test packet to the first device based on the first path of service test packet;
step S201b, sending the second path of service test packet to the second device based on the second measurement parameter, so that the second device sends a reflection packet of the second path of service test packet to the first device based on the second path of service test packet.
In this embodiment, by configuring corresponding measurement parameters for different services, service bandwidth and time delay can be measured flexibly according to service characteristics of different services.
In an embodiment, on the basis of the configured maximum test rate, the measurement rate is continuously adjusted by monitoring the packet loss rate, so as to facilitate calculation of the service bandwidth, specifically, the first path of service test packet is sent to the second device based on the first measurement parameter (step S201a), as shown in fig. 4, which includes steps S401 to S407.
Step S401, a first test rate of an initial multiple n is used as an initial rate, and a first path of service test message of a first measurement message type is sent to second equipment based on the initial rate, wherein n is more than 0 and less than 1;
step S402, judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at an initial rate, if so, executing step S403, otherwise, ending the process and continuing to carry out network measurement according to the prior art;
step S403, increasing a multiple a on the basis of the initial multiple n to obtain a first current multiple m;
step S404, using a first test rate of the first current multiple m as a first current rate, and sending the first path of service test packet to the second device based on the first current rate, where m is 0< 1, m is n + a, a is a constant, and 0< a < 1.
Step S405, judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in the preset time period at the first current speed, if so, executing step S406, otherwise, ending the process and continuing to carry out network measurement according to the prior art.
In an implementation manner, it is observed that the number of the received and transmitted packets is different at the first current rate, the measurement rate may be reduced according to a certain ratio in the following implementation manner, and then the receiving and transmitting conditions of the packets are continuously observed.
Step S406, continuing to increase the multiple a on the basis of the first current multiple m to obtain an updated first current multiple m, and returning to step S404 to execute the step of sending the first path of service test packet to the second device based on the first current rate until the first current multiple m is equal to 1;
step S407, if the first measurement time is reached, stopping sending the first path of service test message to the second device.
In the above steps S401 to S407, the initial multiple n is set to 80%, the multiple a is set to 10%, in some embodiments, a person skilled in the art may perform adaptive setting on n and a in combination with practical application, and the PE1 sends a test packet according to 80% of the maximum measurement rate, if the number of messages sent within 5 seconds is equal, the sending rate is increased by 10%, and it is observed again for 5 seconds, if no packet loss occurs, the test packet is sent according to the maximum rate, if no packet loss occurs during 1 minute measurement, the service rate is considered as the maximum configuration rate, and the measurement is stopped, and if a packet loss occurs, the measurement is completed according to the prior art.
It can be seen that, in the above process, after the rate adjustment and monitoring for a period of time, the packet loss does not occur, that is, the service transmission rate is obtained to satisfy the maximum configuration rate, that is, the first test rate, and it can be obtained that the measured service bandwidth is the configured maximum rate, and accordingly, the calculation result of the service bandwidth in step S202 is also the same as the first test rate.
In another embodiment, in this embodiment, by reducing the rate in a grading manner when a packet loss occurs, the packet loss condition of a service test packet is continuously observed, and a measurement rate can be determined based on the packet loss condition, specifically, the sending of the first path of service test packet to the second device based on the first measurement parameter further includes, as shown in fig. 5, the following steps S501 to S504:
step S501, if the number of the messages transmitted and received between the first equipment and the second equipment is different in a preset time period at an initial rate, reducing a multiple b on the basis of an initial multiple n to obtain a second current multiple k;
step S502, taking a first test rate of a second current multiple k as a second current rate, and sending a first path of service test packet to a second device based on the second current rate, where k is 0< 1, k is n-b, b is a constant and 0< b < 1;
step S503, judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in the preset time period at the second current speed, if not, executing step S504, otherwise, ending the process and completing the network measurement according to the prior art.
In an implementation manner, when the number of the received and transmitted packets is the same at the second current rate, the packet loss continues to be observed at the rate, and if packet loss does not occur continuously, the rate may be recorded as the service bandwidth.
Step S504, continuously reducing the multiple b on the basis of the second current multiple k, and returning to execute sending the first path of service test message to the second equipment based on the second current speed until the message receiving and sending quantity between the first equipment and the second equipment is the same.
In this embodiment, once a packet loss occurs in the above step, the rate is reduced to send, for example, the multiple b is set to 5%, by reducing the sending rate by 5%, if no packet loss occurs within 5 seconds, the sending rate is recorded, otherwise, the sending rate by 5% is reduced again until no packet loss occurs, further, in order to improve the accuracy of the measuring rate, under the condition that no packet loss occurs, the sending rate by a smaller multiple, for example, 1%, is increased, and then measurement is performed until a packet loss occurs, and the corresponding sending rate is recorded at the same time. In addition, in order to improve the measurement accuracy, the final measurement rate may be used to continuously send the test flow for 1 minute, and the test is stopped when no packet loss occurs within 1 minute or the measurement time is reached, where the measurement rate is the service bandwidth.
It should be noted that, a person skilled in the art can adaptively set the preset time period, and the preset time period is set to 5 seconds in the embodiment.
The sending method and principle of the second path of service test packet are the same as above, and are not described herein again.
For ease of understanding, the bandwidth measurement algorithm of PE1 is exemplified as follows, including steps a-e:
the PE1 sends a test message according to 80% of the maximum measurement rate;
b. if the number of the messages to be received in 5 seconds is equal, increasing the sending rate by 10%, if packet loss occurs, entering the step c, observing again for 5 seconds, if no packet loss occurs, sending according to the maximum rate, measuring for 1 minute, if no packet loss occurs, considering the service rate as the maximum configuration rate, stopping measuring, otherwise, entering the step c;
c. reducing the sending rate by 5%, if no packet loss occurs within 5 seconds, entering the step d, otherwise, repeating the step c until no packet loss occurs within 5 seconds;
d. recording a sending rate v1, increasing the sending rate by 1%, recording a sending rate v2, if no packet loss occurs within 5 seconds, repeating the step d until the packet loss occurs, and entering the step e;
e. and continuously sending the test flow for 1 minute by using the speed v2, stopping the test when no packet loss occurs or the measurement time is reached within 1 minute, wherein the measurement speed v2 is the service bandwidth.
It can be understood that the finally adjusted test packet sending rate v2 or the configured maximum rate corresponds to the service bandwidth calculated in step S202. In some embodiments, verification may be performed based on the finally adjusted test packet sending rate v2 or the configured maximum rate and the sending rate calculated in step S202, so as to obtain a final service bandwidth, and improve the measurement accuracy of the service bandwidth.
In the embodiment, the message generated by the PRBS module is random packet length, so that a real network message can be simulated, and the bandwidth and the time delay of the multi-path Ethernet service can be accurately calculated; the service bandwidth and time delay measurement of the multi-path service can be completed simultaneously without an Ethernet test instrument, and the practicability is good; in addition, the PRBS detects the service bandwidth and the time delay period, and does not influence the forwarding of normal service.
Correspondingly, an embodiment of the present application further provides a network measurement system, which is applied to a first device, and as shown in fig. 6, the system includes:
a sending module 601, configured to send multiple service test messages to a second device, where the multiple service test messages are test messages with random packet lengths, so that the second device sends a reflection message of each service test message to the first device based on a receiving condition of each service test message;
a bandwidth calculating module 602 configured to calculate a service bandwidth of each service based on the number of the test packets sent by each service in the first device and the number of the test packets received by each service in the second device;
the delay calculating module 603 is configured to calculate the delay of each service based on the sending time of each service test packet at the first device and the receiving time of each service test packet at the second device, and/or the sending time of each service test packet corresponding to the reflection packet at the second device and the receiving time of each service test packet at the first device.
In one embodiment, the system further comprises:
the message generating module is arranged for generating a first path of service test message based on the service characteristics of the first path of service; generating a second path of service test message based on the service characteristics of the second path of service;
the first path of service and the second path of service are Ethernet private line EVPL services with different IDs.
In one embodiment, the system further comprises:
the parameter configuration module is set to pre-configure a first measurement parameter of the first path of service test message and a second measurement parameter of the second path of service test message;
the sending module 601 includes:
a first sending unit, configured to send a first path of service test packet to the second device based on the first measurement parameter, so that the second device sends a reflection packet of the first path of service test packet to the first device based on the first path of service test packet;
and the second sending unit is configured to send the second path of service test packet to the second device based on the second measurement parameter, so that the second device sends a reflection packet of the second path of service test packet to the first device based on the second path of service test packet.
In one embodiment, the first measurement parameter includes a first measurement packet type, a first measurement time, and a first measurement rate; the second measurement parameter includes a second measurement packet type, a second measurement time, and a second measurement rate.
In one embodiment, the first sending unit includes:
a message sending element, configured to send a first path of service test message of a first measurement message type to a second device based on an initial rate that is a first test rate of an initial multiple n, where 0< n < 1;
the judging element is set to judge whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period under the initial speed, if so, the multiple a is increased on the basis of the initial multiple n to obtain a first current multiple m, and a first test speed of the first current multiple m is used as a first current speed;
the message sending element is further configured to send the first path of service test message to the second device based on a first current rate, where m is 0< m <1, m is n + a, a is a constant, and 0< a < 1;
the judging element is further configured to judge whether the number of the messages received and sent between the first device and the second device is the same within a preset time period at the first current rate, if so, continuously increase the multiple a on the basis of the first current multiple m to obtain an updated first current multiple m, and return to the step of executing the message sending element to send the first path of service test message to the second device on the basis of the first current rate until the first current multiple m is 1;
and the sending stopping element is arranged for stopping sending the first path of service test message to the second equipment when the first measuring time is up.
In an embodiment, the message sending element is further configured to, if the number of messages sent and received between the first device and the second device is different in a preset time period at an initial rate, reduce the multiple b on the basis of the initial multiple n to obtain a second current multiple k, and send the first path of service test message to the second device based on the second current rate, with the first test rate of the second current multiple k as the second current rate, where 0< k <1, k ═ n-b, b is a constant, and 0< b < 1;
the judging element is further configured to judge whether the number of the messages received and transmitted between the first device and the second device is the same within a preset time period at the second current rate, if the number of the messages received and transmitted between the first device and the second device is different from the first current rate, the multiple b is continuously reduced on the basis of the second current multiple k, and the message sending element is returned to execute the step of sending the first path of service test message to the second device based on the second current rate until the number of the messages received and transmitted between the first device and the second device is the same.
In one embodiment, the latency calculation module 603 includes:
the first calculation unit is configured to calculate a transmission time difference of each path of test message based on the transmission time of each path of test message at the first device and the reception time of each path of test message at the second device, and respectively obtain a one-way time delay of each path of service from the first device to the second device based on the transmission time difference; and/or the presence of a gas in the gas,
the second calculation unit is configured to calculate a receiving time difference of the reflection packet corresponding to each path of test packet based on the sending time of the reflection packet corresponding to each path of test packet at the second device and the receiving time of the reflection packet at the first device, and respectively obtain a one-way time delay of each path of service from the second device to the first device based on the receiving time difference; and/or the presence of a gas in the gas,
and the third calculating unit is used for calculating the sending time difference of each path of test message based on the sending time of each path of test message at the first equipment and the receiving time of each path of test message at the second equipment, calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, calculating the average value between the sending time difference and the receiving time difference, and respectively obtaining the two-way time delay of each path of service based on the average value between the sending time difference and the receiving time difference.
Correspondingly, an embodiment of the present application further provides an electronic device, as shown in fig. 7, the electronic device includes: a memory 71 and a processor 72;
the memory 71 stores computer-executable instructions;
the processor 72 executes computer-executable instructions stored by the memory 71 to cause the electronic device to perform the network measurement method.
In a fourth aspect, embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, the computer-readable storage medium is used to implement the network measurement method.
The embodiments of the present application provide an understanding that all or some of the steps of the methods, systems, and functional modules/units in the devices disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof, as will be understood by those of ordinary skill in the art. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer.
In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
In the description of the embodiments of the present application, the term "and/or" merely represents an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. Additionally, the term "at least one" means any combination of any one or more of a variety of at least two, including, for example, A, B, and may mean any one or more elements selected from the group consisting of A, B and C. Further, the term "plurality" means two or more unless specifically stated otherwise.
In the description of the embodiments of the present application, the terms "first," "second," "third," "fourth," and the like (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A network measurement method applied to a first device comprises the following steps:
sending a plurality of paths of service test messages to second equipment, wherein the service test messages are test messages with random packet lengths, so that the second equipment respectively sends reflection messages of each path of service test messages to the first equipment based on the receiving condition of each path of service test messages;
respectively calculating the service bandwidth of each path of service based on the sending quantity of each path of service test message at the first equipment and the receiving quantity of each path of service test message at the second equipment;
and respectively calculating the time delay of each path of service based on the sending time of each path of service test message at the first equipment and the receiving time of each path of service test message at the second equipment, and/or the sending time of each path of service test message corresponding to the reflection message at the second equipment and the receiving time of each path of service test message at the first equipment.
2. The method according to claim 1, wherein the multi-service test message comprises a first service test message and a second service test message, and before sending the multi-service test message to the second device, the method further comprises:
generating a first path of service test message based on the service characteristics of the first path of service; generating a second path of service test message based on the service characteristics of the second path of service;
the first path of service and the second path of service are Ethernet private line EVPL services with different IDs.
3. The method according to claim 1 or 2, wherein the multi-path service test message comprises a first path service test message and a second path service test message, and before sending the multi-path service test message to the second device, the method further comprises:
pre-configuring a first measurement parameter of a first path of service test message and a second measurement parameter of a second path of service test message;
the sending of the multi-path service test message to the second device includes:
sending a first path of service test message to the second equipment based on the first measurement parameter, so that the second equipment sends a reflection message of the first path of service test message to the first equipment based on the first path of service test message;
and sending a second path of service test message to the second equipment based on the second measurement parameter, so that the second equipment sends a reflection message of the second path of service test message to the first equipment based on the second path of service test message.
4. The method of claim 3, wherein the first measurement parameter comprises a first measurement packet type, a first measurement time, and a first measurement rate; the second measurement parameter includes a second measurement packet type, a second measurement time, and a second measurement rate.
5. The method according to claim 4, wherein the sending the first path of service test packet to the second device based on the first measurement parameter includes:
taking a first test rate of an initial multiple n as an initial rate, and sending a first path of service test message of a first measurement message type to second equipment based on the initial rate, wherein n is more than 0 and less than 1;
judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at an initial speed, if so, increasing a multiple a on the basis of an initial multiple n to obtain a first current multiple m;
taking a first test rate of a first current multiple m as a first current rate, and sending the first path of service test packet to the second device based on the first current rate, where m is 0< 1, m is n + a, a is a constant, and 0< a < 1;
judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at a first current speed, if so, continuously increasing the multiple a on the basis of the first current multiple m to obtain an updated first current multiple m, and returning to execute the step of sending the first path of service test message to the second equipment based on the first current speed until the first current multiple m is 1;
and if the first measurement time is reached, stopping sending the first path of service test message to the second equipment.
6. The method according to claim 5, wherein the sending the first path of service test packet to the second device based on the first measurement parameter further comprises:
if the message receiving and sending quantity is different between the first equipment and the second equipment within the preset time period under the initial speed, reducing the multiple b on the basis of the initial multiple n to obtain a second current multiple k;
taking a first test rate of a second current multiple k as a second current rate, and sending a first path of service test message to the second device based on the second current rate, wherein k is 0< k <1, k is n-b, b is a constant, and 0< b < 1;
and judging whether the message receiving and sending quantity between the first equipment and the second equipment is the same in a preset time period at a second current speed, if so, continuing to reduce the multiple b on the basis of the second current multiple k, and returning to the step of sending the first path of service test message to the second equipment on the basis of the second current speed until the message receiving and sending quantity between the first equipment and the second equipment is the same.
7. The method of claim 1, wherein calculating the time delay of each service based on the sending time of each service test packet at the first device and the receiving time of each service test packet at the second device, and/or the sending time of each service test packet at the second device and the receiving time of each service test packet at the first device respectively comprises:
calculating the sending time difference of each path of test message based on the sending time of each path of test message at the first equipment and the receiving time of each path of test message at the second equipment, and respectively obtaining the one-way time delay of each path of service from the first equipment to the second equipment based on the sending time difference; and/or the presence of a gas in the gas,
calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, and respectively obtaining the one-way time delay of each path of service from the second equipment to the first equipment based on the receiving time difference; and/or the presence of a gas in the gas,
the method comprises the steps of calculating the sending time difference of each path of test message based on the sending time of each path of test message at first equipment and the receiving time of each path of test message at second equipment, calculating the receiving time difference of the reflection message corresponding to each path of test message based on the sending time of the reflection message corresponding to each path of test message at the second equipment and the receiving time of the reflection message corresponding to each path of test message at the first equipment, calculating the average value between the sending time difference and the receiving time difference, and respectively obtaining the bidirectional time delay of each path of service based on the average value between the sending time difference and the receiving time difference.
8. A network measurement system, applied to a first device, comprising:
a sending module, configured to send multiple service test messages to a second device, where the multiple service test messages are test messages with random packet lengths, so that the second device sends a reflection message of each service test message to the first device based on a receiving condition of each service test message;
the bandwidth calculation module is arranged to calculate the service bandwidth of each path of service respectively based on the sending quantity of each path of service test message at the first equipment and the receiving quantity of each path of service test message at the second equipment;
and the time delay calculation module is configured to calculate the time delay of each service based on the sending time of each service test packet at the first device and the receiving time of each service test packet at the second device, and/or the sending time of each service test packet at the second device and the receiving time of each service test packet at the first device.
9. An electronic device, comprising: a processor and a memory;
the memory stores computer-executable instructions;
the processor executes the computer-executable instructions stored by the memory to cause the electronic device to perform the network measurement method of any of claims 1-7.
10. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, are configured to implement the network measurement method of any one of claims 1-7.
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