Capture Trigger dialog box
Use this dialog box to specify the event that acts as a trigger and the action that results from the event.
- Trigger On
- Specify the conditions that induce the trigger action. By default, no trigger is set.
- Nothing
- Turns off trigger actions during data capture.
- Pattern match
- Engages the trigger when a specified hexadecimal or ASCII pattern match occurs.
- Buffer space
- Engages the trigger when a capture fills a specific percentage of the capture buffer.
- Pattern match then buffer space
- Requires Network Monitor to monitor the buffer space after the specific matched pattern occurs and to perform the trigger action when both specified conditions exist.
- Buffer space then pattern match
- Requires Network Monitor to detect when a capture has filled a specified percentage of the capture buffer and then to perform the trigger action when both conditions exist.
- Buffer Space
- The percentage of capture buffer that is filled before the trigger action occurs. For example, if you want to trigger action to occur when the capture buffer is three-quarters full, select 75%. The only accepted values are multiples of 25%.
- Pattern
- The pattern you select for the pattern match.
- Offset (Hex)
- The number of hexadecimal bytes from the beginning of the frame to where Network Monitor begins looking for a pattern match. By default, the pattern triggers if the pattern occurs anywhere in the frame.
The pattern offset can be measured from the beginning of the frame or from the end of the topology header.
- From Start of Frame
- Starts the search for the pattern at the beginning of the frame.
- From End of Topology Header
- Starts the pattern search beyond the topology header.
- Pattern
- The pattern that you select to engage the trigger.
- Hex
- A hexadecimal pattern.
- ASCII
- An ASCII pattern.
- Trigger Action
- Specify the action that you want to occur when the trigger criteria (pattern match, buffer space, or both) are met.
- Audible Signal Only
- The computer beeps when the trigger condition is met and the capture process continues without interruption. By default, this option is selected.
- Stop Capture
- The capture process stops when the trigger condition is met.
- Execute Command Line
- Runs a command or opens a file when the trigger specifications are met. You can use as many as 259 characters for the command line. Click Browse to specify a file you want to run.
Note
- If you click the Pattern match then buffer space option and set Buffer Space to 100%, Network Monitor will overwrite the frame that has the pattern match because it does not start counting the buffer space until after the pattern match is found.
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