1. Concurrency testing
First, make the physical connection between the tester and the device under test
1. Open Spirent TestCenter Layer 4-7 Application 4.80 software
2. Click File-New-Project to create a new project
3. Enter the name, select the save path, and click finish.
4. Right-click New Test on Project_0007
5. Click next
6. Enter the name and click next
7. Select Device-Avalanche emulates both clients and servers and click next
8. Select Advanced and click finish
9. Click Administration-Appliances, then click User Administrator to select the network port.
10. Select Refresh by right-clicking on 192.168.0.100
11. Select the interface to be added, right-click reserve to make a reservation, and click close
12. Configure the client, click Load--Specification, select Connections, Height sets the number of concurrencies, set RampTime (calculate the ramp time required for concurrency based on the new capacity) and Steady Time
13. Click Profiles--HTTP:Browser, select HTTP/1.1 and check Persistence
14. Click Profiles—HTTP:User and set User Think Time to 10 seconds
15. Set the address in subnets, set the network segment as you like, and then check the default gateway
16. Set ports to add ports. Click Add Port to add. What is added here is the tester port as the client.
17. Set Associations, associate the port and address, and click Add Asso.
18. Click Server and set Size to 1024
19. Click Server, enter the server, set the address in subnets, the address is arbitrary, as long as it is not in the same network segment as the client, check the default gateway
20. Set ports to add ports. Click Add Port to add. What is added here is the port of the tester as the server side.
21. Set Associations, associate the port with the address, click Add Asso, and change the Address Range to an address in the same network segment as the server port. Try not to use xx.xx.xx.1, and feel free to use the rest.
twenty two. Enter the Client, click Actions, comment out the second line, the second line in the picture below has been deleted, change the IP address in the first line to the Address range in Associations just set on the server side
23. After all settings are completed, click 
to test
2. Create a new connection test
You can refer to the concurrent test configuration. The different configurations are as follows:
Specification in Client-Loads is set to Connections/second, and the number of new creations is set in Height.
Click Profiles--HTTP:Browser, select HTTP/1.1 and uncheck Persistence
Click Profiles—HTTP:User and set User Think Time to 0 seconds
3. Precautions
What if all interfaces cannot be selected?
Solution: Force release, check the option in the picture below, and then right-click the port force release to force release.
