Starting a GTP Replay test

FortiTester tests GTP connections by replaying existing GTPv1 and GTPv2 files. FortiTester uses these files to send test packets to the device under test (DUT).

NOTE: The GTP Replay test is available only in Standalone work mode.

Before you begin:

• You must create pcap files that can be replayed. Only IPv4 traffic is supported. Maximum file size is 200MB.

To start a GTP Replay test:

1. In Performance Testing, expand Replay and click GTP.
2. Click Create New.
3. Configure the network or select a network template. See Using network configuration templates for how to create a network template.
4. Select a Certificate Group, if applicable.
5. Click OK.
6. Configure the test case options described below.
7. Click Start to run the test case.

FortiTester saves the configuration automatically so you can run the test again later. You can also click Save to save the test case without running it.

Tip 1: You can copy an existing case and change its settings to create a new case. In the case list, click Clone to clone the configuration. Only the case name is different from the original case. Tip 2: You can add or edit a comment when the test is running. This comment can be used to search for the test result in the Results page. This is useful especially when the test runs for a long time.

GTP Replay test case options

Settings	Guidelines
Basic Information
Name	Specify the case name, or just use the default. The name appears in the list of test cases.
Ping Server Timeout	If a FortiTester connects to a DUT via a switch, the switch might cause a ping timeout, resulting in the test case failing to run. If this occurs, increase the timeout. The default is 15 seconds. The valid range is 0 to 600. NOTE: You can disable this end-to-end connectivity test by entering a setting of 0. If the DUT is unable to return packets, it is recommended you do so.
Number of Samples	Select the number of samples. The default is 20, which means the web UI will show the last 20 sample data (about 20 seconds) in the test case running page. You can select 20, 60, or 120.
Script Config	Select the script that will run before/after the test. To create a script, see Using script object templates.
Steady Duration	Specify the test duration. The default is 10 minutes. The test stops automatically after the duration you specify.
Stopping Status in Second	The maximum time out in seconds allotted for FortiTester to close all TCP connections after the test finishes.
DNS Host Group	Select the DNS host group to look up the IP address of a domain name. To create a DNS host group, see Creating DNS host group.
DUT Monitor	Select to monitor a FortiGate device under test (DUT). If selected, you can monitor the DUT from the DUT Monitor tab on the management interface. To create a DUT monitoring, see Using DUT monitoring.
Network Settings If you have selected a network config template, the network settings automatically inherit the configurations in the template. See Using network configuration templates for the description of network settings.
Load
Replay Time Out	This timeout specifies how long the client waits for a response from the server. If the client does not receive a response within the timeout, it considers the packet lost. The default value is 2 milliseconds.
Break Once Packet Lost	Select Yes or No. The Yes option means when the system identifies packet loss (the server side has not received the packet that client sent out), it stops the current GTP replay (pcap file), and continues the test with the next GTP file. The No option (the default) means a break is not set; the current replay continues.
Client/Server Network
Network MTU	The maximum transmission unit size.
Action
GTP Packet List	Select pcap files to test.