June 01, 2001
Multiple Filtering Multiple Filtering
Ever need to do a REALLY complicated filter that was beyond the capabilities of your network analyzer? One example might be a filter that contains a large number of IP addresses. Even the most complex network analyzers only provide a finite number of boolean operators.
However, there's nothing keeping you from filtering on a filter on a filter! If you need more power than a single filter provides, then create multiple filters and process the filters in succession. If you had to filter 100 IP addresses, you could tackle the problem with ten separate filters!
One of the disadvantages of multiple filters is managing all of those numerous filters! Some network analysis tools have an easy method of using multiple filters, but others aren't as simple to manage. Almost all network analysis tools will have limitations on capture filters, since that process consumes an enormous amount of processing cycles and resources.
Posted by james_messer at June 1, 2001 11:21 PM
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