CN1571364A - Communication performance test method based on traffic - Google Patents

Abstract

A traffic-based communication performance testing method. In the method, when each protocol layer of the communication module in the network communication receives and sends data, the data traffic received and sent by each protocol layer is counted through the test code added in each protocol layer receiving and sending interface function, and Determine the communication performance of the communication module according to the traffic of each protocol layer. The invention facilitates the monitoring of the working reliability and communication efficiency of each communication module in the network communication, and can accurately determine the bottleneck position of the flow limitation of the communication module in the network.

Description

Traffic-Based Communication Performance Testing Method

technical field

The invention relates to the technical field of network communication, in particular to a traffic-based communication performance testing method.

Background technique

In network communication, in order to maintain the normal operation of the network, it is necessary to exchange data between network elements and between network elements and network management. Usually, the communication module in the transmission network element host is responsible for the transmission of operation and maintenance data between network elements. Send and process tasks.

At present, SDH (Synchronous Digital Hierarchy) and WDM (Wavelength Division Multiplexing) are two major optical network series products that use the ECC (Embedded Control Channel) protocol stack as the network element SCC (System Control and Communication, system control and communication) The communication protocol between boards is a layered protocol, and the protocol stack structure is shown in Figure 1. The communication module of the SCC uses the ECC protocol stack to communicate between network elements, as shown in Figure 2, namely:

At the physical layer, network elements communicate through specific communication protocols and connection mechanisms, such as TCP/IP (Transmission Control Protocol/Internet Protocol) and Ethernet interfaces, or through DCC (Data Communication Channel) in SDH. , or communicate directly through the serial port, the physical layer provides a unified interface for different physical channels for the upper layer (ie MAC layer) to call to receive or send data;

In the link layer (MAC Layer), the software maintains the information of network elements directly adjacent to the physical layer. Whether through DCC, Ethernet or serial ports, a MAC connection is established at the MAC layer, and the MAC layer provides The network layer (NET layer) has a unified receiving and sending interface for the network layer to receive and send data; at the network layer (NET Layer), the software maintains the routing table of the network layer, and the routing table includes all logically reachable network elements At the same time, the network layer provides a unified receiving and sending interface for the application layer;

In the application layer (L4 Layer), the application layer data frame type identifier is used to distinguish which application module needs to process the data frame.

As mentioned above, when network element B sends data to network element A, the SCC software of network element B fills the application layer address of the opposite end into the data frame, and then calls the unified sending interface of the network layer to send the data; After receiving the data frame from the application layer, obtain the network layer address from the application layer address, and then search the routing table for the network address of the first network element that needs to pass through when the data frame is transmitted, and then assign the address to Write it into the data frame and send it to the link layer; after the link layer receives the data from the network layer, it searches the link layer connection table according to the address, then writes the link layer address into the data frame, and then writes the It is sent to the physical layer, and the physical layer uses different sending channels according to different types of connections to finally send the data out.

After the physical layer of network element A receives the data, it will directly forward the link layer. After the link layer receives the data, it will judge whether it is an information frame of the link layer or a control frame of the link layer. If it is an information frame, it will be forwarded to the network layer. Processing, if it is a control frame, it will be processed at the link layer; after the network layer receives the data sent by the link layer, it will judge whether the data is an information frame or a control frame of the network layer, and if it is an information frame, it will be forwarded to the application layer Processing, if it is a control frame, it will be processed at the network layer; after the application layer receives the data, it will obtain the module identification that finally processes the data according to the application layer address in the data frame and forward it, thus completing the final data sending and receiving process.

In order to ensure the reliability of network communication, it is usually necessary to test the communication performance of each protocol layer of the communication module. At present, there is no method for judging the communication efficiency of each protocol layer and determining the bottleneck of traffic limitation caused by the communication module. location method.

Contents of the invention

The invention provides a flow-based communication performance testing method to obtain the data flow received and sent by each layer in the communication protocol, thereby facilitating the monitoring of the working performance of each communication module.

To achieve the above object, the present invention provides the following technical solutions:

A traffic-based communication performance testing method, comprising: when each protocol layer in network communication receives and sends data, respectively counts the data traffic received and sent by each protocol layer, and determines its communication rate according to the traffic of each protocol layer. performance.

The statistics of the data traffic received and sent by each protocol layer is realized by adding test codes in the receiving and sending interface functions of each protocol layer.

The statistics of the data flow received and sent by each protocol layer is as follows: in each protocol layer, the data received and sent are counted according to different data types.

The data types include: information data, control data and other data.

The statistics of the data flow received and sent by each protocol layer also includes the process of determining the data type of the received and sent data. The process is: obtaining the data type of the received and sent data determined by each protocol layer.

In this method:

The flow statistics of the received data by each protocol layer is carried out when the data is started to be received, that is, before the actual received data processing process of the protocol layer;

The above-mentioned traffic statistics of the data sent by each protocol layer is performed after the actual processing of the data sent by the protocol layer is completed.

As can be seen from the above-mentioned technical scheme, the present invention determines its communication performance according to the statistical results of the data flow of each protocol layer by counting the data flow received and sent by each protocol layer of the communication protocol stack, thereby facilitating network communication. The monitoring of the working reliability and communication efficiency of the communication module can accurately determine the position of the communication module in the network where the flow limit occurs, providing a reliable basis for the effective adjustment and maintenance of network communication. Therefore, the implementation of the present invention provides technical support for ensuring normal network communication.

Description of drawings

Fig. 1 is the structural representation of ECC protocol stack;

FIG. 2 is a schematic diagram of communication between network elements based on the ECC protocol;

3 is a schematic diagram of communication between network elements in the present invention;

Fig. 4 is a flow chart of the specific implementation of the present invention.

Detailed ways

The present invention refers to Fig. 3 in order to realize the test of communication performance in the network communication, especially the method adopted for the test of the communication performance of each protocol layer of the communication module, including: when the L4 layer (i.e. application layer) of the communication module, NET ( When receiving and sending data at the network) layer, MAC (media access control) layer (ie, the link layer) and the physical layer, the data flow received and sent by each protocol layer is counted respectively, and according to the data flow statistics of each protocol layer The results determine its communication performance.

The specific implementation process of the present invention is referring to Fig. 4, specifically comprises the following steps:

Step 1: Add corresponding test codes in the receiving and sending interface functions of each protocol layer to count the data traffic of each protocol layer of the communication module;

The added test code is equivalent to setting up a traffic counter at each protocol layer to count different types of data traffic at each protocol layer in real time;

Step 2: When each protocol layer receives and sends data, determine the type of data;

The process of determining the type of data is actually to obtain the data types of received and sent data that have been determined by each protocol layer, because in the prior art, each protocol layer performs different processing on the received or sent data. The corresponding data type has been determined in the process of sending data;

Of course, if the prior art does not determine the data type, the determination of the data type can also be performed independently in the present invention, and step 3 is performed;

The different types of data described in this step include: information data (ie information frame), control data (ie control frame) and other data (other frames);

Step 3: According to the determined data type, make statistics on the traffic of each protocol layer receiving and sending the corresponding type of data;

For the data received by each protocol layer, when the protocol layer receives the data, the traffic statistics are performed, that is, the traffic statistics are performed before the actual receiving data processing process;

For the data sent by each protocol layer, when the protocol layer completes the actual sending data processing process, the statistics of the sending data flow are performed;

Step 4: Determine the communication performance of each protocol layer according to the statistics of each type of data traffic value of each protocol layer, for example, simulate network elements under various conditions, including: different network sizes, different network topology complexity, whether the network structure In case of changes, whether there is an alarm, performance data reported to the network management, and user operations on each network element in the network are different. By collecting these data, you can see the traffic of various types of data frames at each protocol layer under different circumstances. It is different. When the network response is obviously slowed down or data is lost, or some network elements are abnormally reset due to busy communication, by analyzing these data, on the one hand, it is possible to specifically analyze where the bottleneck of the communication capability is. From this, the communication capacity of a network with a specific scale and characteristic topology under typical configurations can be deduced.

The further specific implementation process of the traffic statistics process of each protocol layer receiving and sending data involved in the traffic-based communication performance testing method of the present invention is as follows:

For example, in the receive processing function CmMacRecv of the MAC layer:

           
    PROCEDURE CmMacRecv

    BEGIN

    ...normal processing...

    / / Determine the data frame type

    SWITCH CASE packet type

    //If it is an information frame of the MAC layer

    WHEN MAC_INFO SELECT:

    MAC layer information frame received frame count plus 1;

    The total number of received bytes of the MAC layer information frame is accumulated;

    //Abort the judgment process

    BREAK;

    //If it is a control frame of the MAC layer

    WHEN MAC_CMD SELECT:

    MAC layer control frame received frame count plus 1;

    The total number of received bytes of the MAC layer control frame is accumulated;

    //Abort the judgment process

    BREAK;

    //If it is another MAC layer frame

    DEFAULT SELECT:

    Add 1 to the received frame count of other frame types at the MAC layer;

    The total number of received bytes of other frame types in the MAC layer is accumulated;

    //Abort the judgment process

    BREAK;
        <!-- SIPO <DP n="6"> -->
        <dp n="d6"/>
      END CASE

    END

        

Similarly, in the sending processing function CmMacSend of the MAC layer, the corresponding test code is also added to classify and count the sending traffic:

           
    PROCEDURE CmMacSend

    BEGIN

    ...normal processing...

    / / Determine the data frame type

    SWITCH CASE packet type

    //If it is an information frame of the MAC layer

    WHEN MAC_INFO SELECT:
    MAC layer information frame sending frame count plus 1;

    The total number of bytes sent by the MAC layer information frame is accumulated;

    //Abort the judgment process

    BREAK;

    //If it is a control frame of the MAC layer

    WHEN MAC_CMD SELECT:

    MAC layer control frame sending frame count plus 1;

    The total number of bytes sent by the MAC layer control frame is accumulated;

    //Abort the judgment process

    BREAK;

    //If it is another frame of the MAC layer
        <!-- SIPO <DP n="7"> -->
        <dp n="d7"/>
      DEFAULTSELECT:

         Add 1 to the count of sent frames of other frame types in the MAC layer;

         The total number of bytes sent by other frame types in the MAC layer is accumulated;

         //Abort the judgment process

         BREAK;

      END CASE

    END

        

By analogy, by adding similar test codes to the sending and receiving processing functions of other communication protocol layers, the frame count and total byte count of various types of data frames received and sent by each layer can be counted, and the obtained statistical data It is an important basis for testing, researching and analyzing the communication module traffic processing capability (that is, communication performance).

Claims (6)

1, a kind of communication performance test method based on flow, it is characterized in that comprising: A. When each protocol layer in the network communication receives and sends data, the data flow received and sent by each protocol layer is counted separately; B. Determine the communication performance of each protocol layer according to the traffic of each protocol layer above. 2. The traffic-based communication performance testing method according to claim 1, characterized in that in the step A, the data traffic received and sent by each protocol layer is counted by receiving and sending interface functions in each protocol layer Add test code implementation. 3. The flow-based communication performance testing method according to claim 1 or 2, characterized in that in said step A, statistics on the data flow received and sent by each protocol layer refers to receiving and sending statistics in each protocol layer The sent data is counted separately according to different data types. 4. The traffic-based communication performance testing method according to claim 3, characterized in that said data types include: information data and control data. 5. The traffic-based communication performance testing method according to claim 3, characterized in that the statistics of the data traffic received and sent by each protocol layer in the step A also includes: determining the data type of the received and sent data A process, the process is to obtain the data types of received and sent data that have been determined by each protocol layer. 6. The traffic-based communication performance testing method according to claim 1 or 2, characterized in that: Each protocol layer in the step A is to carry out the traffic statistics of the received data when starting to receive the data, that is, before the actual received data processing process of the protocol layer; The above-mentioned traffic statistics of the data sent by each protocol layer is performed after the actual processing of the data sent by the protocol layer is completed.

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