HP 2800 - Manual (Page 277)

Traffic/Security Filters (HP ProCurve Series 2600/2600-PWR and 2800 Switches)
Using Source-Port Filters
Editing a Source-Port Filter
The switch includes in one filter the action(s) for all destination ports and/or
trunks configured for a given source port. Thus, if a source-port filter already
exists and you want to change the currently configured action for some
destination ports or trunks, use the
filter source-port command to update the
existing filter. For example, suppose you configure a filter to drop traffic
received on port 8 and destined for ports 1 and 2. The resulting filter is shown
on the left in figure 10-5. Later, you update the filter to drop traffic received
on port 8 and destined for ports 3 through 5. Since only one filter exists for a
given source port, the filter on traffic from port 8 appears as shown on the
right in figure 10-5:
Figure 10-5. Assigning Additional Destination Ports to an Existing Filter
10-9