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Diagnostics
c. For Device, select an interface.
d. Repeat to add additional interfaces to the capture filter.
7. (Optional) For Berkeley packet filter expression, type a filter using Berkeley Packet Filter
(BPF) syntax. See
syntax.
8. (Optional) Schedule the analyzer to run, using this capture filter, based on a specified event or
at a particular time:
a. For Run mode, select the mode that will be used to run the capture filter. Available
options are:
n
n
n
n
b. Enable the capture filter schedule.
c. For Duration, type the amount of time that the scheduled analyzer session will run.
Allowed values are any number of weeks, days, hours, minutes, or seconds, and take the
format number{w|d|h|m|s}.
For example, to set Duration to ten minutes, enter 10m or 600s.
d. For Save interval, type the frequency with which captured events will be saved.
Allowed values are any number of weeks, days, hours, minutes, or seconds, and take the
format number{w|d|h|m|s}.
For example, to set Save interval to ten minutes, enter 10m or 600s.
9. Click Apply to save the configuration and apply the change.
Command line
1. Log into the IX20 command line as a user with full Admin access rights.
Depending on your device configuration, you may be presented with an Access selection
menu. Type admin to access the Admin CLI.
IX20 User Guide
Example filters for capturing data traffic
On boot: The capture filter will run once each time the device boots.
Interval: The capture filter will start running at the specified interval, within 30
seconds after the configuration change is saved.
If Interval is selected, in Interval, type the interval.
l
Allowed values are any number of weeks, days, hours, minutes, or seconds, and
take the format number{w|d|h|m|s}.
For example, to set Interval to ten minutes, enter 10m or 600s.
Set time: Runs the capture filter at a specified time of the day.
If Set Time is selected, specify the time that the capture filter should run in Run
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time, using the format HH:MM.
During system maintenance: The capture filter will run during the system
maintenance time window.
Analyze network traffic
for examples of filters using BPF
782
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