Use this Knowledge Script to emulate a TCP/IP Telnet session. Default values indicate that Endpoint 1 sends one byte of data to Endpoint 2, which replies by echoing the same one-byte record. Endpoint 1 contains a SLEEP inside the inner loop: user_delay. Set this sleep period to a non-zero value to approximate the time the users being emulated pause between keystrokes when typing. The default data type for the exchanged bytes is TRANS.CMP.
The well-known port number for Telnet flows in TCP/IP is 23.
If you choose to collect data, this Knowledge Script generates the following data streams:
The response time in seconds. Additional details are saved with the data point, and can be viewed by double-clicking the data point in the Graph Pane or Chart Console.
Availability -- Returns one of two values:
1 -- test was successful
0 -- test was not successful
Networks-RT
The default interval for this script is Every 15 minutes.
Set the following parameters as needed:
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Description |
How to Set It |
|---|---|
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Collect data? |
Select Yes to collect data for graphs and reports. By default, data is collected. |
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Event when test fails to run? |
Select Yes to raise an event when the test fails to run. By default, events are enabled. |
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Event when response time exceeds threshold? |
Select Yes to raise an event when the threshold is exceeded. By default, events are enabled. |
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Select endpoints to run the test to |
Click the Browse [...] button to display the Select a View dialog box. Highlight a view from the list and click Next to open the Select Desired Computer(s) dialog box. The view determines which computers are available for selection. Select one or more endpoint computers. Click Finish. |
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Response time threshold (seconds) |
Specify a floating point number in seconds. When response time exceeds this value, an event is raised. On threshold events, the event message contains a breakdown of the total response time. Required, unless the Event when response time exceeds threshold parameter is disabled. |
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Unsuccessful test event severity |
Set the severity level, from 1 to 40, to indicate the importance of the event. The default is 5. |
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Threshold event severity |
Set the event severity level, from 1 to 40, to indicate the importance of the event. The default is 15. If response time events are disabled, this value is ignored. |
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Detailed Parameters |
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Transactions per record |
Specify a positive integer to represent the number of transactions to simulate. The value varies according to the application script. |
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Size of record to send |
Specify the number of bytes to send in a record. The default is 1. |
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Delay before responding |
Specify a number of seconds to simulate a server delay. The default is 0 (no delay). Before executing the next script, the server pauses for the specified value, which can be either a positive integer or a random distribution expressed in milliseconds. The format for random distributions is r(l,u), where r = U (uniform), N (normal), P (poisson), or E (exponential); l = lower limit; u = upper limit. For example, u(1,10). For more information, see Section A.7.1, Setting Sleep Times. |
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User delay |
Specify a value to simulate a user delay. Before executing the next command, the script pauses for the specified time. The default is 0 (no pause). The value can be a positive integer or random distribution expressed in milliseconds. The random distribution format is r(l,u), where r = U (Uniform), N (Normal), P (Poisson), or E (Exponential); l = lower limit; u = upper limit. For example, u(1,10). |
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Transaction delay |
Specify a positive integer in milliseconds to control the frequency of transaction execution. This simulates an end user running the transaction on a regular basis. The default of 0 sets no delay, so that the script executes the number of transactions per record as quickly as possible. |
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Destination port |
Specify the destination port number, or use the default AUTO for automatic assignment. Must be an integer between 1 and 65,535. |
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Source port |
Specify the source port number, or use the default AUTO for automatic assignment. Must be an integer between 1 and 65,535. |