
Configuring Traffic Filters and Protocol Prioritization
6-20
Specifying User-Defined Criteria
In addition to predefined criteria, the Edit Filters and Create Filter Template
windows provide a “User-Defined” criterion choice for most protocols. The
User-Defined option allows you to set up filtering criteria based on bit patterns
within a packet’s header that are not supported in predefined criteria.
Setting up user-defined criteria is similar to using up predefined criteria, except
you must specify the criterion’s location within the packet. (With predefined
criteria, the locations are established.) Refer to Chapter 3 for the supported
protocol header reference points you can use to specify user-defined traffic filter
criteria.
To specify user-defined criteria:
1. In the Edit Filters or Create Filter Template window, select the
User-Defined option from the Criteria menu.
The Add User-Defined Field window appears (Figure 6-15). In this window,
you specify the criterion’s location.
Figure 6-15. Add User-Defined Field Window
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