TCP Test Case common options
Use this page as a generic for information that is common to all TCP case configurations. Anything specific to the case itself will be found within the case's page. For example, TCP RPS test specifics will be found under the TCP RPS page.
| 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 | |
| Simulated Users |
Number of users to simulate. |
| Ramp Up Time | Time in seconds for traffic to ramp up when you start the test. |
| Ramp Down Time | Time in seconds for traffic to ramp down when you stop the test. |
| Throughput Buffer Size | Set the throughput buffer size. The valid range is from 64-10M. |
| Bidirectional Traffic Flow | Select Enable to enable bidirectional traffic flow. |
| Client Profile | |
| Client Close Mode | Select the connection close method: 3Way_Fin or Reset. |
| Source Port Range | Specify a client port range. The valid range is 10,000 to 65,535, which is also the default. |
| IP Change Algorithm/Port Change Algorithm | Select a change algorithm: Increment or Random. This setting determines how the system changes source/destination IP addresses and ports to simulate multiple client requests. The Increment option uses the next IP address or port in the range, for example: 10.11.12.1 -> 10.11.12.2; port 10000 -> 10001. The Random option selects an IP address or port in the range randomly. |
| Server Profile | |
| Case Server Port | The server port where the test case traffic arrives. |
| Client/Server TCP Options | |
| TCP Receive Window | The receive window in which you want the TCP stack to send TCP segments. The receive window informs the peer how many bytes of data the stack is currently able to receive. The supplied value is used in all segments sent by the stack. The valid range is 0 to 65535. |
| Delayed Acks | Select to cause the TCP stack to implement the Delayed ACK strategy, which attempts to minimize the transmission of zero-payload ACK packets. Acknowledgments will be deferred and should be piggybacked on top of valid data packets. If successfully deferred, these acknowledgments are free, in the sense that they consume no additional bandwidth. |
| Delayed Ack Timeout | If you select Delayed ACKs, use this timeout value to specify the maximum time the TCP stack waits to defer ACK transmission. If this timer expires, the stack transmits a zero-payload acknowledgment. |
|
Explicit Congestion Notification |
Select the Expilcit Congestion Notification(ECN) support level: Disabled: Disables all support for ECN. Support ECN: ECN will be supported if the remote host initiates it first. Use ECN: ECN will be initiated for new connections. |
| Timestamps Option | Select to add a TCP time stamp to each TCP segment. |
| Enable Push Flag | Select to set the TCP PSH (push) flag in all TCP packets. This flag causes buffered data to be pushed to the receiving application. If deselected, the PSH flag is not set in any TCP packet. |
| SACK Option | Select to enable TCP Selective Acknowledgment Options(SACK). |
| Enable TCP Keepalive | Select to enable TCP Keep-alive Timer. |
| Keepalive Timeout | If you enable TCP Keepalive, use this timeout value to specify the maximum time to send your peer a keep-alive probe packet |
| Keepalive Probes | If you enable TCP Keepalive, use this value to specify the maximum probes to detect the broken connection. |
| Override Internal Timeout Calculation | Select to override the TCP stack calculation of the retransmission timeout value. |
| Retransmission Timeout | If you select Override Internal Timeout Calculation, use this value for the first transmission of a particular data or control packet; it is doubled for each subsequent retransmission. |
| Retries | The number of times a timed-out packet is retransmitted before aborting further retransmission. If the client does not receive a response after the configured number of retries have been attempted, the error is logged in the results. CSV file as a TCP timeout when a SYN or FIN is sent, and no SYN/ACK or FIN/ACK from the server is received. |
|
FinACK Timer |
This value measures the amount of time that a SimUser waits after it finishes its actions and before it directly breaks all of its TCP connections (that is, the time to wait to receive the LAST_ACK message for a FIN request). A value of 0 disables the timer. Note: Setting this timer can adversely affect TCP performance. |
|
Out of Order Reset |
If enabled, FortiTester will send Reset packet to close the TCP session which has occurred in the out of order sequence. Enabling this option sets the "Out of Order Reset" flag in both client and server sides for TCP Options. |
| Client/Server Network | |
| Network MTU | The maximum transmission unit size. |
| Network MSS | The maximum segment size. If MSS is bigger than the MTU, IP fragmentation will be triggered conditionally. |
| IP Option DSCP | Provide quality of service (QoS). |
| Client Limit | |
| Bandwidth | Bandwidth in Mbps. The default is 0, which means the device will send traffic as fast as possible. |
| Packets per Second | Rate of the packets per second. The default is 0, which means the device will create transactions as fast as possible. |
| Server Limit | |
| Bandwidth | Bandwidth in Mbps. The default is 0, which means the device will send traffic as fast as possible. |
| Packets per Second | Rate of the packets per second. The default is 0, which means the device will create transactions as fast as possible. |