CN112714041B - TTE switch capacity test method, device and computer readable medium - Google Patents

TTE switch capacity test method, device and computer readable medium Download PDF

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CN112714041B
CN112714041B CN202011517999.9A CN202011517999A CN112714041B CN 112714041 B CN112714041 B CN 112714041B CN 202011517999 A CN202011517999 A CN 202011517999A CN 112714041 B CN112714041 B CN 112714041B
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tte
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tte switch
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CN112714041A (en
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沈文博
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Beijing Teletest Technology Co ltd
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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
    • H04L43/0882—Utilisation of link capacity
    • 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
    • H04L43/0823—Errors, e.g. transmission errors
    • H04L43/0829—Packet loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/35—Switches specially adapted for specific applications
    • H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The invention provides a TTE switch capacity testing method, a TTE switch capacity testing device and a computer readable medium. The method comprises the following steps: s1: setting the proportional relation of TT flow, RC flow and BE flow according to the theoretical maximum exchange capacity of the TTE exchanger; s2: sending a test packet to enable the test packet to pass through the TTE switch and return; s3: determining whether packet loss occurs in the TTE switch according to a test packet returned by the TTE switch and a test domain in the test packet, if not, executing S4, and if so, executing S5: S4: increasing the ratio of TT flow and RC flow in the initial proportional relation according to the preset resolution, and executing S2; s5: judging whether the flow with the packet loss is only BE flow according to the flow type identifier, if not, executing S6, and if so, executing S7; s6: reducing the ratio of TT flow and RC flow in the initial proportional relation according to the preset resolution, and executing S2; s7: and determining the capacity of the TTE switch according to the current proportional relation. The scheme of the invention can test the capacity of the TTE switch more efficiently.

Description

TTE switch capacity test method, device and computer readable medium
Technical Field
The present invention relates to the field of testing technologies, and in particular, to a method and an apparatus for testing capacity of a TTE switch, and a computer readable medium.
Background
In order to test the switching capacity of the TTE switch, a TTE network tester needs to BE connected to the switch to BE tested, after a preset time of testing is performed, the testing is stopped, and whether the BE traffic starts to lose packets or not is checked one by one according to the total number of the packets sent and received by each flow. And reducing or increasing the bandwidth occupied by the flow according to the resolution ratio of the test and repeating the process according to whether the TTE switch starts to lose the packet, and finally stopping the test under the resolution ratio allowed by the test.
However, the above-mentioned testing process needs manual inspection, the testing efficiency is low, and the testing process is time-consuming and labor-consuming.
Therefore, a more efficient TTE switch capacity test method is needed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for testing the capacity of a TTE switch and a computer readable medium, which can test the capacity of the TTE switch more efficiently.
In a first aspect, an embodiment of the present invention provides a method for testing capacity of a TTE switch, including:
s1: setting a proportional relation of time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow according to the theoretical maximum exchange capacity of the TTE exchanger;
s2: sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier;
s3: determining whether the TTE switch has packet loss according to the test packet returned by the TTE switch and the test domain in the test packet, if not, executing S4, and if so, executing S5:
s4: increasing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution ratio, and executing S2;
s5: judging whether the flow with packet loss is only the BE flow according to the flow type identifier, if not, executing S6, and if so, executing S7;
s6: reducing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution ratio, and executing S2;
s7: and determining the capacity of the TTE switch according to the current proportional relation.
Preferably, the first and second electrodes are formed of a metal,
before the S1, further comprising: establishing a connection with the TTE switch;
the ports of the TTE switch are sequentially communicated in a preset sequence inside the TTE switch, and the first port and the last port in the preset sequence are communicated to form a full-port direct-connection loopback topology;
the sending a test packet to the TTE switch includes:
sending a test message to a second port of the TTE switch through a first port; the first port is correspondingly connected with the second port of the equipment to be tested;
receiving the test packet sent by a fourth port of the TTE switch through a third port; wherein the fourth port communicates with the second port internally of the TTE switch; the third port is correspondingly connected with the fourth port.
Preferably, the first and second liquid crystal display panels are,
the test domain comprises a data stream number and a sequence number, wherein the sequence number is used for identifying the number of data packets, and the data stream number is used for representing the data stream of the test domain;
determining whether the TTE switch has packet loss according to the test domain in the test packet, including:
calculating the packet loss rate of the TTE switch according to the sequence number and the data stream number by using the following packet loss rate calculation formula, wherein the packet loss rate calculation formula comprises:
wherein, S is the packet loss rate, X is the standard data packet number of the data stream corresponding to the data stream number, and Y is the data packet number of the sequence number;
if the packet loss rate is not greater than a preset threshold value, determining that no packet loss occurs in the TTE switch, if the packet loss rate is greater than the preset threshold value, determining that the packet loss occurs in the TTE switch, and if the packet loss rate is greater than the preset threshold value, determining that the packet loss occurs in the TTE switch.
Preferably, the first and second electrodes are formed of a metal,
determining whether the TTE switch has packet loss according to the test domain in the test packet, including:
starting a first timer, and after the first timer is overtime, sending at least one data message to the TTE switch, where each data message in the at least one data message includes the data stream number, and a duration of the first timer is used to ensure that the first detection message reaches the second network device before the at least one data message;
sending a second detection message to the TTE switch, and recording a second packet sending count value, wherein the second packet sending count value is the number of data messages which are sent when the second detection message is sent and comprise the data stream number;
receiving a response message from the TTE switch device, and acquiring a first packet receiving count value and a second packet receiving count value from the response message, where the first packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the first detection message, and the second packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the second detection message;
and performing packet loss statistics on the plurality of data messages according to the first packet sending count value, the second packet sending count value, the first packet receiving count value and the second packet receiving count value.
Preferably, the first and second electrodes are formed of a metal,
the transmission flow is divided into three flow types of the TT flow, the RC flow and the BE flow according to time key characteristics;
reasonable time planning is carried out on real-time flow and non-real-time flow by adopting a mixed flow partition scheduling method for the three flows, so that information flows with three different transmission rules and priorities in a network are reasonably transmitted;
the capacity estimation formula based on the complex network is popularized to TTE network capacity estimation, a BA scale-free network model is constructed, and edge betweenness in the complex network is selected as a key parameter for measuring TTE network capacity;
analyzing the relation between TTE network capacity and network scale and maximum edge betweenness, and calculating the network capacity of TT, RC and BE flows in the TTE network in a transmission time period according to a partition scheduling mode;
and distributing the messages to different transmission flow types according to the importance degree according to the messages to be transmitted.
Preferably, the first and second electrodes are formed of a metal,
further comprising: establishing an FPGA circuit which comprises a TT frame scheduling information buffer area, an RC frame scheduling information buffer area, a BE frame scheduling information buffer area, an MAC layer scheduling TT frame buffer area, an MAC layer scheduling RC frame buffer area, an MAC layer scheduling BE frame buffer area, protocol processing software and communication scheduling software;
inputting TT flow into a TT frame scheduling information buffer area, inputting RC flow into an RC frame scheduling information buffer area, and inputting BE flow into a BE frame scheduling information buffer area;
when the protocol stack software enters a sending scheduling process, the TT frame scheduling information buffer area is inquired preferentially, the corresponding TT frame virtual link buffer area is indexed according to VLID parameter information acquired by the scheduling information buffer area, the TT flow is read, UDP and IP protocol stack processing is carried out, and then the TT flow is copied and transmitted to the MAC layer scheduling TT frame buffer area; if the TT frame scheduling information buffer area is empty, inquiring the RC frame scheduling information buffer area, if not, indexing the corresponding RC frame virtual link buffer area according to VLID parameter information acquired by the RC frame scheduling information buffer area, reading the RC flow, copying and transmitting the RC flow to the MAC layer scheduling RC frame buffer area after UDP and IP protocol stack processing; inquiring a BE frame scheduling information buffer area if the TT frame scheduling information buffer area and the RC frame scheduling information buffer area are both empty, and copying and transmitting BE flow after UDP and IP protocol stack processing to an MAC layer scheduling BE frame buffer area if the BE frame scheduling information buffer area is not empty;
reading TT frame scheduling transmission from a MAC layer scheduling TT frame buffer area when the synchronous clock is timed to the starting time point of the TT time slice; and when the synchronous clock is timed to an RT time slice, reading an RC frame from an RC frame buffer scheduled by the MAC layer, and reading a BE frame from a BE frame buffer scheduled by the MAC layer for scheduling and sending.
In a second aspect, an embodiment of the present invention provides a TTE switch capacity testing apparatus based on the TTE switch capacity testing method provided in any one of the first aspects, including:
a setting unit configured to execute S1: setting a proportional relation of time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow according to the theoretical maximum exchange capacity of the TTE exchanger;
a transmitting unit configured to execute S2: sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier;
a processing unit to perform: s3: determining whether the TTE switch generates packet loss according to the test packet returned by the TTE switch and the test domain in the test packet, if not, executing S4, and if so, executing S5:
s4: increasing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution, and triggering the sending unit to execute S2;
s5: judging whether the flow with the packet loss is only the BE flow according to the flow type identifier, if not, executing S6, and if so, executing S7;
s6: reducing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution, and triggering the sending unit to execute S2;
s7: and determining the capacity of the TTE switch according to the current proportional relation.
Preferably, the first and second electrodes are formed of a metal,
further comprising: a connection unit;
the connection unit is used for being connected with a plurality of ports of the TTE switch in a one-to-one correspondence manner, the ports of the TTE switch are sequentially communicated in the TTE switch according to a preset sequence, and a first port and a last port in the preset sequence are communicated to form a full-port direct-connection loopback topology;
the sending unit is configured to send a test packet to the second port of the TTE switch through the first port; the first port is correspondingly connected with the second port of the equipment to be tested; receiving the test packet sent by a fourth port of the TTE switch through a third port; wherein the fourth port communicates with the second port internally of the TTE switch; the third port is correspondingly connected with the fourth port.
In a third aspect, an embodiment of the present invention provides a TTE switch capacity testing apparatus, including: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor is configured to invoke the machine-readable program to perform the method provided in any of the above first aspects.
In a fourth aspect, embodiments of the present invention provide a computer-readable medium having stored thereon computer instructions, which, when executed by a processor, cause the processor to perform the method provided in any of the first aspects.
The embodiment of the invention provides a method and a device for testing capacity of a TTE (time to equipment) switch and a computer readable medium. According to the technical scheme, in order to test the switching capacity of the TTE switch, time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow are set, and the test is started according to a proportional relation of a certain proportion. And sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier, and the test domain and the traffic type identifier are used for indicating which of TT traffic, bandwidth-limited RC traffic and best-effort BE traffic the test packet belongs to. Determining whether the TTE switch has packet loss according to the test packet returned by the TTE switch and a test domain in the test packet, if the packet loss occurs, judging whether the flow with the packet loss is only the BE flow according to a flow type identifier included in the test packet, wherein the BE flow can BE discarded when congestion occurs in the TTE network row in the test, if the BE flow is discarded, the transmission of the TT flow triggered by non-discardable time and the bandwidth-limited RC flow reaches the upper limit of the capacity, the BE flow is discarded, and therefore the capacity of the TTE switch can BE determined according to the current proportional relation. If the discarded traffic is not only BE traffic, it indicates that the TT traffic or the RC traffic has packet loss, and since the two traffic are not discarded preferentially, it can BE concluded that the switching capacity of the TTE switch has exceeded the upper limit, and in order to obtain the capacity upper limit of the TTE switch, the ratio of the TT traffic or the RC traffic needs to BE reduced according to the preset resolution, and the testing is performed again until the capacity of the TTE switch is determined. If no packet loss occurs at present, it indicates that the switching capacity of the TTE does not reach the upper limit yet, so the ratio of TT traffic or RC traffic can be increased according to the preset resolution until the capacity of the TTE switch is determined. Therefore, the scheme provided by the invention aims at the characteristic that TT flow and RC flow are different from BE flow, utilizes the existing real-time packet loss characteristic, and adds a small amount of software and hardware facilities, so that the automatic test of the switching capacity of the TTE switch can BE realized, the manual intervention is not needed in the middle process of the test, and the test is accurate and rapid, thereby being capable of testing the capacity of the TTE switch more efficiently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a method for testing capacity of a TTE switch according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a TTE switch capacity testing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
In order to test the switching capacity of the TTE switch, a TTE network tester needs to BE connected to the switch to BE tested, after the testing for a preset time, the testing is stopped, and whether each flow of BE starts to lose packets or not is checked one by one according to the total number of the transmitted packets and the received packets of each flow. And reducing or increasing the bandwidth occupied by the flow according to the tested resolution and repeating the process according to whether the TTE switch starts to lose the packet, and finally stopping the test under the resolution allowed by the test.
However, the above-mentioned testing process needs manual inspection, the testing efficiency is low, and the testing process is time-consuming and labor-consuming.
Therefore, a more efficient TTE switch capacity test method is needed.
The following describes in detail a method, an apparatus, and a computer-readable medium for testing the capacity of a TTE switch according to various embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a method for testing capacity of a TTE switch, where the method includes the following steps:
step 101: setting a proportional relation of time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow according to the theoretical maximum exchange capacity of the TTE exchanger;
step 102: sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier;
step 103: according to the test packet returned by the TTE switch, determining whether the TTE switch has packet loss or not according to a test domain in the test packet, if not, executing a step 104, and if so, executing a step 105:
step 104: increasing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution ratio, and executing a step 102;
step 105: judging whether the flow with the packet loss is only the BE flow according to the flow type identifier, if not, executing a step 106, and if so, executing a step 107;
step 106: reducing the ratio of the TT flow to the RC flow in the initial proportional relation according to a preset resolution ratio, and executing a step 102;
step 107: and determining the capacity of the TTE switch according to the current proportional relation.
According to the technical scheme, in order to test the switching capacity of the TTE switch, time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow are set, and the test is started according to a proportional relation of a certain proportion. And sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier, and the test domain and the traffic type identifier are used for indicating which of TT traffic, bandwidth-limited RC traffic and best-effort BE traffic the test packet belongs to. Determining whether the TTE switch has packet loss according to the test packet returned by the TTE switch and a test domain in the test packet, if the packet loss occurs, judging whether the flow with the packet loss is only the BE flow according to a flow type identifier included in the test packet, wherein the BE flow can BE discarded when congestion occurs in the TTE network row in the test, if the BE flow is discarded, the transmission of the TT flow triggered by non-discardable time and the bandwidth-limited RC flow reaches the upper limit of the capacity, the BE flow is discarded, and therefore the capacity of the TTE switch can BE determined according to the current proportional relation. If the discarded traffic is not only BE traffic, it indicates that the TT traffic or the RC traffic has packet loss, and since the two traffic are not discarded preferentially, it can BE concluded that the switching capacity of the TTE switch has exceeded the upper limit, and in order to obtain the capacity upper limit of the TTE switch, the ratio of the TT traffic or the RC traffic needs to BE reduced according to the preset resolution, and the testing is performed again until the capacity of the TTE switch is determined. If no packet loss occurs at present, it indicates that the switching capacity of the TTE does not reach the upper limit yet, so the ratio of TT traffic or RC traffic can be increased according to the preset resolution until the capacity of the TTE switch is determined. Therefore, the scheme provided by the invention aims at the characteristic that TT flow and RC flow are different from BE flow, utilizes the existing real-time packet loss characteristic, and adds a small amount of software and hardware facilities, so that the automatic test of the switching capacity of the TTE switch can BE realized, the manual intervention is not needed in the middle process of the test, and the test is accurate and rapid, thereby being capable of testing the capacity of the TTE switch more efficiently.
TTE network: TTE is called Time-Triggered Ethernet, is a special Ethernet mainly used in the fields of avionics and the like, and is specified by international standards SAE AS6802 and ARINC 664-part 7. On the basis of the 802.3 standard Ethernet, concepts such as time synchronization, time slot and the like are introduced, and traffic sent on a port is divided into different levels such as PCF/TT/RC/BE and the like. PCF: protocol Control Frame, Protocol Control Frame; TT: Time-Trigger, Time-Trigger; RC: Rate-Constrained, Rate constraint; BE: Best-Effort delivery. Where BE traffic is in the usual sense 802.3 standard network traffic.
According to the TTE specification, TT flow can only BE sent in a time slot negotiated in advance, RC is bandwidth limited flow, BE (best effort) is Ethernet flow of 802.3, and BE flow is allowed to BE discarded under the condition that a TTE network system is congested.
TTE networks differ from the conventional 802.3 standard networks by introducing the real-time concept that TT traffic can only BE sent out in specific time slots, which is equivalent to adding some restrictions on traffic scheduling of ports, and BE traffic is discarded according to the priority order of the traffic when the system is congested.
The maximum switching capacity of the TTE switch under the condition of not discarding any traffic, whether to preferentially discard BE traffic when needing to begin discarding traffic, and under which condition the TT frame has packet loss, can both reflect the performance of the TTE switch, which is an important performance index.
In an embodiment of the present invention, before step 101, the method further includes: establishing a connection with the TTE switch;
the ports of the TTE switch are sequentially communicated in a preset sequence inside the TTE switch, and the first port and the last port in the preset sequence are communicated to form a full-port direct-connection loopback topology;
the sending a test packet to the TTE switch includes:
sending a test message to a second port of the TTE switch through a first port; the first port is correspondingly connected with the second port of the equipment to be tested;
receiving the test packet sent by a fourth port of the TTE switch through a third port; wherein the fourth port communicates with the second port internally of the TTE switch; the third port is correspondingly connected with the fourth port.
In particular, an ethernet tester is typically used to detect TTE switches. An ethernet tester is a dedicated test instrument for generating ethernet network traffic to be injected into a device under test or a network under test (DUT) and obtaining information of an object under test by analyzing ethernet frames returned from the object under test. And sending a network packet with test information from the test port, returning the network packet to the port of the Ethernet tester through the tested network or the tested equipment, extracting the information of the sending time of the test packet by the tester, and comparing the information with the corresponding information of the receiving time, thereby obtaining the characteristics of the tested equipment and the tested network.
In an embodiment of the present invention, the test domain includes a data stream number and a sequence number, where the sequence number is used to identify the number of data packets, and the data stream number is used to characterize the data stream of the test domain;
determining whether the TTE switch has packet loss according to the test domain in the test packet, including:
calculating the packet loss rate of the TTE switch according to the sequence number and the data stream number by using the following packet loss rate calculation formula, wherein the packet loss rate calculation formula comprises:
Figure BDA0002848057850000111
wherein, S is the packet loss rate, X is the standard data packet number of the data stream corresponding to the data stream number, and Y is the data packet number of the sequence number;
if the packet loss rate is not greater than a preset threshold value, determining that no packet loss occurs in the TTE switch, if the packet loss rate is greater than the preset threshold value, determining that the packet loss occurs in the TTE switch, and if the packet loss rate is greater than the preset threshold value, determining that the packet loss occurs in the TTE switch.
In particular, one embodiment of the test information mentioned above is called a test field, and is information for reserving a region padding in the payload portion of the network packet. Two of which are called a stream number and a sequence number. A flow is a unit of traffic that can be counted independently, and sequence numbers are used to identify different network packets sent within the same flow. To detect packet loss, the most direct way is to see how many packets are transmitted and how many packets are received, and the reception minus the transmission is the lost part. However, during operation, many network flows are still transmitted in the network topology, real-time detection is impossible, and only detection after flow stopping is possible, which undoubtedly greatly reduces efficiency. Since it can BE considered a correct and qualified behavior for the TTE network to drop BE traffic, unlike the ordinary 802.3 standard network, several parameters need to BE tested for TTE switches: 1. for a given ratio, under what conditions BE packets begin to BE discarded; 2. for the given traffic proportion configuration described above, it is under what circumstances to start dropping TT/RC frames. These two parameters combine to reflect the switching capacity of the TTE switch.
In an embodiment of the present invention, determining whether the TTE switch has a packet loss according to the test domain in the test packet includes:
starting a first timer, and after the first timer is overtime, sending at least one data message to the TTE switch, where each data message in the at least one data message includes the data stream number, and a duration of the first timer is used to ensure that the first detection message reaches the second network device before the at least one data message;
sending a second detection message to the TTE switch, and recording a second packet sending count value, wherein the second packet sending count value is the number of data messages which are sent when the second detection message is sent and comprise the data stream number;
receiving a response message from the TTE switch device, and acquiring a first packet receiving count value and a second packet receiving count value from the response message, where the first packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the first detection message, and the second packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the second detection message;
and performing packet loss statistics on the plurality of data messages according to the first packet sending count value, the second packet sending count value, the first packet receiving count value and the second packet receiving count value.
The detection message and the response message may be, for example, a packet loss statistic message and a packet loss statistic response, respectively, or both the detection message and the response message are connectivity detection messages. And respectively recording the count values of the transmitted and received data messages at the transmitting time and the receiving time of the detection message, and carrying out packet loss statistics according to the count values. The packet loss statistics needs to ensure the transmission sequence of the data message and the detection message, otherwise, the statistical result is inaccurate. When the second detection message reaches the second network device earlier than the latter two data messages, the wrong packet loss statistic 2 will be obtained. In fact, the latter two data packets are not lost, but arrive later than the second detection packet. Therefore, a detection flag may be added in the data packet for packet loss detection. And calculating the packet loss number based on the detection mark. The packet sending counter can record the packet sending count value of the data message including the detection mark. The packet receiving counter can record the packet receiving count value of the data message including the detection mark.
In an embodiment of the present invention, determining whether the TTE switch has a packet loss according to the test domain in the test packet includes:
starting a first timer, and after the first timer is overtime, sending at least one data message to the TTE switch, where each data message in the at least one data message includes the data stream number, and a duration of the first timer is used to ensure that the first detection message reaches the second network device before the at least one data message;
sending a second detection message to the TTE switch, and recording a second packet sending count value, wherein the second packet sending count value is the number of data messages which are sent when the second detection message is sent and comprise the data stream number;
receiving a response message from the TTE switch device, and acquiring a first packet receiving count value and a second packet receiving count value from the response message, where the first packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the first detection message, and the second packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the second detection message;
and performing packet loss statistics on the plurality of data messages according to the first packet sending count value, the second packet sending count value, the first packet receiving count value and the second packet receiving count value.
In an embodiment of the present invention, transmission traffic is divided into three traffic types, i.e., the TT traffic, the RC traffic, and the BE traffic, according to time-critical characteristics;
reasonable time planning is carried out on real-time flow and non-real-time flow by adopting a mixed flow partition scheduling method for the three flows, so that information flows with three different transmission rules and priorities in a network are reasonably transmitted;
the capacity estimation formula based on the complex network is popularized to TTE network capacity estimation, a BA scale-free network model is constructed, and edge betweenness in the complex network is selected as a key parameter for measuring TTE network capacity;
analyzing the relation between TTE network capacity and network scale and maximum edge betweenness, and calculating the network capacity of TT, RC and BE flows in the TTE network in a transmission time period according to a partition scheduling mode;
and distributing the messages to different transmission flow types according to the importance degree according to the messages to be transmitted.
In an embodiment of the present invention, the method further comprises: establishing an FPGA circuit, wherein the FPGA circuit comprises a TT frame scheduling information buffer area, an RC frame scheduling information buffer area, a BE frame scheduling information buffer area, an MAC layer scheduling TT frame buffer area, an MAC layer scheduling RC frame buffer area, an MAC layer scheduling BE frame buffer area, protocol processing software and communication scheduling software;
inputting TT flow into a TT frame scheduling information buffer area, inputting RC flow into an RC frame scheduling information buffer area, and inputting BE flow into a BE frame scheduling information buffer area;
when the protocol stack software enters a sending scheduling process, the protocol stack software preferentially inquires a TT frame scheduling information buffer area, indexes a corresponding TT frame virtual link buffer area according to VLID parameter information acquired by the scheduling information buffer area, reads TT flow, performs UDP and IP protocol stack processing, copies the TT flow and transmits the TT flow to an MAC layer scheduling TT frame buffer area; if the TT frame scheduling information buffer area is empty, inquiring the RC frame scheduling information buffer area, if not, indexing the corresponding RC frame virtual link buffer area according to VLID parameter information acquired by the RC frame scheduling information buffer area, reading the RC flow, copying and transmitting the RC flow to the MAC layer scheduling RC frame buffer area after UDP and IP protocol stack processing; inquiring a BE frame scheduling information buffer area if the TT frame scheduling information buffer area and the RC frame scheduling information buffer area are both empty, and copying and transmitting BE flow after UDP and IP protocol stack processing to an MAC layer scheduling BE frame buffer area if the BE frame scheduling information buffer area is not empty;
reading TT frame scheduling transmission from a MAC layer scheduling TT frame buffer area when the synchronous clock is timed to the starting time point of the TT time slice; and when the synchronous clock is timed to an RT time slice, reading an RC frame from an RC frame buffer scheduled by the MAC layer, and reading a BE frame from a BE frame buffer scheduled by the MAC layer for scheduling and sending.
Specifically, TTE end system driving software and protocol software cooperate to realize transceiving processing scheduling of TT, RC and BE data with different priorities. Wherein TT is data based on time trigger, RC and BE are data based on event trigger, RC is flow control data, and BE is common Ethernet data.
Protocol stack software of the TTE end system implements a non-interrupt mechanism, stream priority-based round-robin scheduling mechanism. The transmitting end of the protocol stack software respectively establishes FIFO buffers with different priorities for TT, RC and BE data which need to BE transmitted, namely a TT frame scheduling information buffer, an RC frame scheduling information buffer and a BE frame buffer. The main processor inputs TT information into TT frame scheduling information buffer area, inputs RC information into RC frame scheduling information buffer area, and inputs BE information into BE frame buffer area. The protocol stack software adopts different priorities to schedule and extract FIFO buffer data to realize the transmission protocol processing and data transmission of different real-time levels. Once entering a sending scheduling process, the protocol stack software polls a TT frame scheduling information buffer area, an RC frame scheduling information buffer area and a BE frame buffer area respectively according to the priority level. Preferentially inquiring the TT frame scheduling information buffer area, indexing the corresponding TT frame virtual link buffer area according to VLID parameter information acquired by the TT frame scheduling information buffer area, reading the TT message, copying and transmitting the TT message to the MAC layer scheduling TT frame buffer area after UDP and IP protocol stack processing; in the inquiring state, if the TT frame scheduling information buffer area is empty, inquiring the RC frame scheduling information buffer area, if not, indexing the corresponding RC frame virtual link buffer area according to VLID parameter information acquired by the RC frame scheduling information buffer area, reading the RC message, copying and transmitting the RC message to the MAC layer scheduling RC frame buffer area after UDP and IP protocol stack processing; and if the TT frame scheduling information buffer area and the RC frame scheduling information buffer area are both empty, inquiring a BE frame buffer area, and if the BE frame buffer area is not empty, extracting a BE message, carrying out UDP and IP protocol stack processing, copying and transmitting the BE message to the MAC layer scheduling BE frame buffer area.
The transmitting end of the protocol stack software processes and respectively establishes different FIFO buffers for TT, RC and BE data, namely a TT frame receiving information buffer, an RC frame receiving information buffer and a BE frame buffer. The gigabit PHY circuit inputs the received TT frame into a TT frame receiving information buffer area, inputs the received RC frame into a RC frame receiving information buffer area, and inputs the received BE frame into a BE frame buffer area. And the protocol stack software adopts different priority schedules to extract the data in the FIFO buffer area so as to realize the receiving protocol processing and data transmission of different real-time levels. Once entering the receiving process, the protocol stack software polls a TT frame receiving information buffer area, an RC frame receiving information buffer area and a BE frame buffer area according to the priority level. Preferentially inquiring a TT frame receiving information buffer area, indexing a corresponding UDP port buffer area according to VLID parameter information of the TT frame, reading the TT frame, performing UDP and IP protocol unpacking processing, copying and transmitting the TT frame to a TT frame UDP port buffer area; if the TT frame receiving buffer area is empty, inquiring the RC receiving information buffer area, if not, indexing the corresponding UDP port buffer area according to the VLID parameter information of the RC frame, reading the RC frame, performing UDP and IP protocol unpacking processing, copying and transmitting the RC frame to the RC frame UDP port buffer area; if the TT buffer area and the RC buffer area are both empty, the BE frame buffer area is inquired, and if the BE frame buffer area is not empty, the BE frame is extracted, is subjected to UDP and IP protocol unpacking processing, and is copied and transmitted to the BE frame UDP port buffer area.
As shown in fig. 2, an embodiment of the present invention provides a TTE switch capacity test apparatus based on any one of the TTE switch capacity test methods provided in the foregoing embodiments, including:
a setting unit 201 configured to execute S1: setting a proportional relation of time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow according to the theoretical maximum exchange capacity of the TTE exchanger;
a sending unit 202, configured to execute S2: sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a flow type identifier;
a processing unit 203 for performing: s3: determining whether the TTE switch has packet loss according to the test packet returned by the TTE switch and the test domain in the test packet, if not, executing S4, and if so, executing S5:
s4: increasing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution, and triggering the sending unit to execute S2;
s5: judging whether the flow with the packet loss is only the BE flow according to the flow type identifier, if not, executing S6, and if so, executing S7;
s6: reducing the ratio of the TT flow and the RC flow in the initial proportional relation according to a preset resolution, and triggering the sending unit to execute S2;
s7: and determining the capacity of the TTE switch according to the current proportional relation.
In an embodiment of the present invention, the apparatus further includes: a connection unit;
the connection unit is used for being connected with a plurality of ports of the TTE switch in a one-to-one correspondence manner, the ports of the TTE switch are sequentially communicated in the TTE switch according to a preset sequence, and a first port and a last port in the preset sequence are communicated to form a full-port direct-connection loopback topology;
the sending unit is configured to send a test packet to the second port of the TTE switch through the first port; the first port is correspondingly connected with the second port of the equipment to be tested; receiving the test packet sent by a fourth port of the TTE switch through a third port; wherein the fourth port communicates with the second port internally of the TTE switch; the third port is correspondingly connected with the fourth port.
It is to be understood that the configuration illustrated in the embodiment of the present invention does not constitute a specific limitation on the TTE switch capacity test apparatus. In other embodiments of the invention, the TTE switch capacity test apparatus may include more or fewer components than shown, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
The above information interaction, execution process and other contents between the units in the TTE switch capacity testing apparatus are based on the same concept as the method embodiment of the present invention, and specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.
The present invention also provides a computer-readable medium storing instructions for causing a computer to perform the TTE switch capacity testing method as described herein. Specifically, a system or an apparatus equipped with a storage medium on which software program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium. In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention. Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion unit connected to the computer, and then a CPU or the like mounted on the expansion board or the expansion unit is caused to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the embodiments described above.
It should be noted that not all steps and modules in the above flows and system structure diagrams are necessary, and some steps or modules may be omitted according to actual needs. The execution order of the steps is not fixed and can be adjusted as required. The system structure described in the above embodiments may be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by a plurality of physical entities, or some components in a plurality of independent devices may be implemented together.
In the above embodiments, the hardware unit may be implemented mechanically or electrically. For example, a hardware element may comprise permanently dedicated circuitry or logic (such as a dedicated processor, FPGA or ASIC) to perform the corresponding operations. A hardware element may also comprise programmable logic or circuitry (e.g., a general-purpose processor or other programmable processor) that may be temporarily configured by software to perform the corresponding operations. The specific implementation (mechanical, or dedicated permanent, or temporarily set) may be determined based on cost and time considerations.
While the invention has been shown and described in detail in the drawings and in the preferred embodiments, the invention is not limited to the embodiments disclosed, and those skilled in the art will appreciate that various combinations of code auditing means in the various embodiments described above may be employed to obtain further embodiments of the invention, which are also within the scope of the invention.

Claims (10)

  1. The TTE switch capacity test method is characterized by comprising the following steps:
    s1: setting a proportional relation of time-triggered TT flow, bandwidth-limited RC flow and best-effort BE flow according to the theoretical maximum exchange capacity of the TTE exchanger;
    s2: sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier;
    s3: determining whether the TTE switch has packet loss according to the test packet returned by the TTE switch and the test domain in the test packet, if not, executing S4, and if so, executing S5; wherein, whether packet loss occurs or not is: whether the packet loss rate is greater than a preset threshold value or not is judged, if so, the packet loss is considered to occur, and if not, the packet loss is considered not to occur;
    s4: increasing the ratio of the TT flow to the RC flow in the proportional relation according to a preset resolution, and executing S2;
    s5: judging whether the flow with the packet loss is only the BE flow according to the flow type identifier, if not, executing S6, and if so, executing S7;
    s6: reducing the ratio of the TT flow to the RC flow in the proportional relation according to a preset resolution, and executing S2;
    s7: and determining the capacity of the TTE switch according to the current proportional relation.
  2. 2. The method of claim 1,
    before the S1, further comprising: establishing a connection with the TTE switch;
    the ports of the TTE switch are sequentially communicated in a preset sequence inside the TTE switch, and the first port and the last port in the preset sequence are communicated to form a full-port direct-connection loopback topology;
    the sending a test packet to the TTE switch includes:
    sending a test message to a second port of the TTE switch through a first port; the first port is correspondingly connected with a second port of the equipment to be tested;
    receiving the test packet sent by a fourth port of the TTE switch through a third port; wherein the fourth port communicates with the second port internally of the TTE switch; the third port is correspondingly connected with the fourth port.
  3. 3. The method of claim 1,
    the test domain comprises a data stream number and a sequence number, wherein the sequence number is used for identifying the number of data packets, and the data stream number is used for representing the data stream of the test domain;
    determining whether the TTE switch has packet loss according to the test domain in the test packet, including:
    according to the serial number and the data stream number, calculating the packet loss rate of the TTE switch by using the following packet loss rate calculation formula, wherein the packet loss rate calculation formula comprises:
    Figure FDA0003589859130000021
    wherein, S is the packet loss rate, X is the standard data packet number of the data stream corresponding to the data stream number, and Y is the data packet number of the sequence number;
    if the packet loss rate is not greater than a preset threshold value, determining that no packet loss occurs in the TTE switch, if the packet loss rate is greater than the preset threshold value, determining that the packet loss occurs in the TTE switch, and if the packet loss rate is greater than the preset threshold value, determining that the packet loss occurs in the TTE switch.
  4. 4. The method of claim 3,
    determining whether the TTE switch has packet loss according to the test domain in the test packet, including:
    starting a first timer, and after the first timer is overtime, sending at least one data message to the TTE switch, wherein each data message in the at least one data message comprises the data stream number, and the duration of the first timer is used for ensuring that a first detection message reaches a second network device before the at least one data message;
    sending a second detection message to the TTE switch, and recording a second packet sending count value, wherein the second packet sending count value is the number of data messages which are sent when the second detection message is sent and comprise the data stream number;
    receiving a response message from the TTE switch device, and acquiring a first packet receiving count value and a second packet receiving count value from the response message, where the first packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the first detection message, and the second packet receiving count value is the number of received data messages including the data stream number when the TTE switch receives the second detection message;
    and performing packet loss statistics on a plurality of data messages according to the first packet sending count value, the second packet sending count value, the first packet receiving count value and the second packet receiving count value.
  5. 5. The method of claim 1,
    the transmission flow is divided into three flow types of the TT flow, the RC flow and the BE flow according to time key characteristics;
    reasonable time planning is carried out on real-time flow and non-real-time flow by adopting a mixed flow partition scheduling method for the three flows, so that information flows with three different transmission rules and priorities in a network are reasonably transmitted;
    the capacity estimation formula based on the complex network is popularized to TTE network capacity estimation, a BA scale-free network model is constructed, and edge betweenness in the complex network is selected as a key parameter for measuring TTE network capacity;
    analyzing the relation between TTE network capacity and network scale and maximum edge betweenness, and calculating the network capacity of TT, RC and BE flows in the TTE network in a transmission time period according to a partition scheduling mode;
    and distributing the messages to different transmission flow types according to the importance degree according to the messages to be transmitted.
  6. 6. The method of claim 1,
    further comprising: establishing an FPGA circuit, wherein the FPGA circuit comprises a TT frame scheduling information buffer area, an RC frame scheduling information buffer area, a BE frame scheduling information buffer area, an MAC layer scheduling TT frame buffer area, an MAC layer scheduling RC frame buffer area, an MAC layer scheduling BE frame buffer area, protocol processing software and communication scheduling software;
    inputting TT flow into a TT frame scheduling information buffer area, inputting RC flow into an RC frame scheduling information buffer area, and inputting BE flow into a BE frame scheduling information buffer area;
    when the protocol stack software enters a sending scheduling process, the TT frame scheduling information buffer area is inquired preferentially, the corresponding TT frame virtual link buffer area is indexed according to VLID parameter information acquired by the scheduling information buffer area, the TT flow is read, UDP and IP protocol stack processing is carried out, and then the TT flow is copied and transmitted to the MAC layer scheduling TT frame buffer area; if the TT frame scheduling information buffer area is empty, inquiring the RC frame scheduling information buffer area, if not, indexing the corresponding RC frame virtual link buffer area according to VLID parameter information acquired by the RC frame scheduling information buffer area, reading the RC flow, copying and transmitting the RC flow to the MAC layer scheduling RC frame buffer area after UDP and IP protocol stack processing; inquiring a BE frame scheduling information buffer area if the TT frame scheduling information buffer area and the RC frame scheduling information buffer area are both empty, and copying and transmitting BE flow after UDP and IP protocol stack processing to an MAC layer scheduling BE frame buffer area if the BE frame scheduling information buffer area is not empty;
    reading TT frame scheduling transmission from a MAC layer scheduling TT frame buffer area when the synchronous clock is timed to the starting time point of the TT time slice; and when the synchronous clock is timed to an RT time slice, reading an RC frame from an RC frame buffer scheduled by the MAC layer, and reading a BE frame from a BE frame buffer scheduled by the MAC layer for scheduling and sending.
  7. 7. The TTE switch capacity test apparatus according to the TTE switch capacity test method of any one of claims 1 to 6, comprising:
    a setting unit configured to execute S1: setting a proportional relation of time triggered TT flow, bandwidth limited RC flow and best-effort BE flow according to the theoretical maximum exchange capacity of the TTE exchanger;
    a transmitting unit configured to execute S2: sending a test packet to the TTE switch so that the test packet passes through the TTE switch and returns, wherein the test packet comprises a test domain and a traffic type identifier;
    a processing unit to perform: s3: determining whether the TTE switch generates packet loss according to the test packet returned by the TTE switch and the test domain in the test packet, if not, executing S4, and if so, executing S5; wherein, whether packet loss occurs or not is as follows: whether the packet loss rate is greater than a preset threshold value or not is judged, if so, the packet loss is considered to occur, and if not, the packet loss is considered not to occur;
    s4: increasing the ratio of the TT flow and the RC flow in the proportional relation according to a preset resolution, and triggering the sending unit to execute S2;
    s5: judging whether the flow with the packet loss is only the BE flow according to the flow type identifier, if not, executing S6, and if so, executing S7;
    s6: reducing the ratio of the TT flow and the RC flow in the proportional relation according to a preset resolution, and triggering the sending unit to execute S2;
    s7: and determining the capacity of the TTE switch according to the current proportional relation.
  8. 8. The apparatus of claim 7,
    further comprising: a connection unit;
    the connection unit is used for being connected with the ports of the TTE switch in a one-to-one correspondence manner, the ports of the TTE switch are sequentially communicated in the TTE switch according to a preset sequence, and a first port is communicated with a last port in the preset sequence to form a full-port direct-connection loopback topology;
    the sending unit is configured to send a test packet to the second port of the TTE switch through the first port; the first port is correspondingly connected with a second port of the equipment to be tested; receiving the test packet sent by a fourth port of the TTE switch through a third port; wherein the fourth port communicates with the second port internally of the TTE switch; the third port is correspondingly connected with the fourth port.
  9. A TTE switch capacity test apparatus, comprising: at least one memory and at least one processor;
    the at least one memory to store a machine readable program;
    the at least one processor configured to invoke the machine readable program to perform the method of any of claims 1 to 6.
  10. 10. Computer readable medium, characterized in that it has stored thereon computer instructions which, when executed by a processor, cause the processor to carry out the method of any one of claims 1 to 6.
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CN113542066B (en) * 2021-07-13 2022-06-07 杭州安恒信息技术股份有限公司 Equipment performance testing method and device and related equipment
CN114124720A (en) * 2021-11-05 2022-03-01 西安云维智联科技有限公司 Method for testing time-triggered service gating characteristic of TTE switch
CN114338444B (en) * 2021-12-27 2024-03-12 西安电子科技大学 TTE switch testing method, TTE switch testing system, storage medium and computer equipment
CN115297070B (en) * 2022-07-15 2024-02-27 中国航空无线电电子研究所 Multi-metadata-excited ARINC664 switch cache overflow test method
CN115766555B (en) * 2022-11-11 2024-06-18 中国航空工业集团公司西安飞行自动控制研究所 TTE switch network test architecture and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236956A (en) * 2013-04-18 2013-08-07 神州数码网络(北京)有限公司 Method and switch for testing throughput of communication equipment
CN103475542A (en) * 2013-09-04 2013-12-25 上海斐讯数据通信技术有限公司 Network equipment handling capacity performance testing system and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103139005B (en) * 2011-12-02 2015-08-19 中国移动通信集团北京有限公司 The method that Network resource allocation reasonability is detected and device
US11252097B2 (en) * 2018-12-13 2022-02-15 Amazon Technologies, Inc. Continuous calibration of network metrics
CN110048949B (en) * 2019-03-27 2022-02-25 天津大学 Communication method based on TTE network capacity estimation
CN111107017A (en) * 2019-12-06 2020-05-05 苏州浪潮智能科技有限公司 Method, equipment and storage medium for processing switch message congestion
CN111711546B (en) * 2020-06-17 2022-08-16 杭州安恒信息技术股份有限公司 Device throughput testing method, device, system and computer readable storage medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236956A (en) * 2013-04-18 2013-08-07 神州数码网络(北京)有限公司 Method and switch for testing throughput of communication equipment
CN103475542A (en) * 2013-09-04 2013-12-25 上海斐讯数据通信技术有限公司 Network equipment handling capacity performance testing system and method

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