Chapter 11 Filter configuration 119

BCM50a Integrated Router Configuration — Advanced

Figure 54 Filter rule process

You can apply up to four filter sets to a particular port to block multiple types of

packets. With each filter set having up to six rules, you can have a maximum of 24

rules active for a single port.

Start
Fetch First
Filter Set
Fetch First
Filter Rule
Active?

Execute

Filter Rule

Fetch Next
Filter Rule
Next filter
Rule
Available?
Fetch Next
Filter Set
Next Filter Set
Available?
Accept PacketDrop Packet
Yes
No
Yes
No
Yes
Packet into
filter

Filter Set

Forward
Drop
No
Check
Next
Rule