Network emulations

For scripts running on cloud-based load generators, you can apply different network conditions. This enables you to emulate real life conditions when running a load test on an application.

In this topic:

Use network emulations

This section describes how to add network emulations to a load test. The product provides default network emulations that you can assign to a script configured to run in a cloud location. You can also create additional emulations according to your needs. You can apply up to five network emulations to a load test.

Network emulation is supported for the following protocols:

• VuGen Web HTTP/HTML
• VuGen Mobile Application HTTP/HTML
• TruClient Mobile Web
• TruClient Web
• Web Services
• SAP - Web
• Siebel Web
• MQTT

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Default system network emulations

The following table describes the default network emulations available in OpenText Core Performance Engineering. The bandwidth mode for the Mobile, 3G, and 4G profiles are per Vuser.

Network profile	Latency (ms)	Packet Loss (%)	Bandwidth (Kbps)		Description
			Download	Upload
No emulation - default	0	0	0	0	None
WAN_Good	20	0	0	0	Emulates 20 ms of fixed network latency, without packet loss and with unrestricted bandwidth. This link represents a good landline network connection between two sites that are approximately 1,000 miles apart.
WAN_Typical	50	0	0	0	Emulates 50 ms of fixed network latency, without packet loss and with unrestricted bandwidth. This link represents a good landline network connection between two sites that are approximately 2,600 miles apart.
WiFi	100	0.3	0	0	Emulates 100 ms of fixed network latency, with 0.3% packet loss and unrestricted bandwidth. This link represents a landline network connection between two sites that are approximately 5,500 miles apart.
Mobile_Typical	80	0	2000	512	Emulates 80 ms of fixed network latency without packet loss, while restricting downstream bandwidth to 2,000 Kbps and upstream bandwidth to 512 Kbps. This link represents a 3G mobile connection between two domestic sites. The network's specified bandwidth is available to each Vuser that uses the network. This option is recommended for Vusers that emulate mobile-based and home-based users as each device has access to the full bandwidth.
Mobile_Busy	120	0	512	256	Emulates 120 ms of fixed network latency without packet loss, while restricting downstream bandwidth to 512 Kbps and upstream bandwidth to 256 Kbps. This link represents a 2G mobile connection between two domestic sites. The network's specified bandwidth is available to each Vuser that uses the network. This option is recommended for Vusers that emulate mobile-based and home-based users as each device has access to the full bandwidth.
4G_Typical	40	0	5000	2000	Emulates 40 ms of fixed network latency without packet loss, while restricting downstream bandwidth to 5000 Kbps and upstream bandwidth to 2000 Kbps. This link represents a 4th generation mobile network, fair communication quality, individual bandwidth. The network's specified bandwidth is available to each Vuser that uses the network. This option is recommended for Vusers that emulate mobile-based and home-based users as each device has access to the full bandwidth.
3G_Typical	120	0	512	256	Emulates 120 ms of fixed network latency without packet loss, while restricting downstream bandwidth to 512 Kbps and upstream bandwidth to 256 Kbps. This link represents a 3rd generation mobile network, fair communication quality, individual bandwidth. The network's specified bandwidth is available to each Vuser that uses the network. This option is recommended for Vusers that emulate mobile-based and home-based users as each device has access to the full bandwidth.

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Preconfigured network emulations

In your load tests, you can choose up to five network emulation types. This section describes how to select five of the preconfigured emulations.

To select network emulations:

1. Click Load distribution in the sidebar and select the Cloud tab.

2. Click the NE >> button to show the currently selected network emulations.

3. Click the Edit network emulations button .

4. In the Network Emulations window, select up to five emulations and click OK.

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User-defined network emulations

To create your own emulations, perform the following steps:

1. Select Assets > Network Emulations.

2. Click the Create button to open the New Network Emulation dialog box.

3. For each new emulation, configure the following:

   • Name
   • Latency
   • Packet Loss
   • Download Bandwidth
   • Upload Bandwidth

4. Click Save.

You can edit or delete a user-defined emulation at any time.

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See also:

• Create a load test
• Create a load test
• Blog: Network Emulation: Truly evaluating the impact of network conditions