15-6 Frame Relay Module 4.0 User Guide, Rev 01Configuring Bridge FiltersFiltering is the method by which the network manager controls usage of an inter-network. A filter permits or denies (depending on how it is configured) some or all ofa specific type of bridged traffic across an interface. This can be helpful in such waysas limiting unwanted or inappropraite traffic onto LANs or WANs, or preventingaccess to certain devices for security purposes.The process of configuring and using Bridge filters is as follows. Both procedures aredescribed later in this chapter.1. Create a Bridge Filter Definition record.2. Create a Bridge Filter Applications record, which will determine how the filterdefinitions will be applied.3. Perform an on-line update of the definitions and applications (described under"Configuring Bridge Filter Applications" on page 15-10). To review existingfilters, press [F] at the Filter Definitions and Applications Configuration Menu (or[A], [A], [E], [F], [F] from the Main Menu).Configuring Filter DefinitionsTo define a filter, press [G] at the Configure Filter Definitions and Applications Menu.When prompted, enter:l Filter Type: 4 = Generic 5 = MAC (Default) 6 = LLC2 SAP7 = Protocol 8 = Bridged native NetBIOS.l Filter ID: 1–65535. (The default is 1.) This is simply a unique identifier.l Any other requested information, noting the values in Table 15-2 (on page 15-8) through Table 15-6 (on page 15-10). (Press [Enter] at a prompt to accept adefault value.)The display will depend on the filter category. The following figure shows an exampleof a MAC filter record.
