Traffic/Security Filters 
Configuring Traffic/Security Filters 
Figure 9-6. Example of Switch Response to Adding a Filtered Source Port to a Trunk 
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 or trunk. 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 
9-7. 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 
9-7: 
Figure 9-7. Assigning Additional Destination Ports to an Existing Filter 
Configuring a Multicast or Protocol Traffic 
Filter (5300xl Switches Only) 
Syntax:  [no] filter 
[multicast < mac- address >] 
(5300xl only.) Specifies a multicast address. Inbound 
traffic received (on any port) with this multicast address 
will be filtered. (Default: Forward on all ports.) 
The no form of the command deletes the multicast filter 
for the < mac-address > multicast address and returns the 
destination ports for that filter to the Forward action. 
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