HP J9576A - Example of Creating a Source-Port Filter

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Traffic/Security Filters and Monitors
Configuring Traffic/Security Filters
Example of Creating a Source-Port Filter
For example, assume that you want to create a source-port filter that drops
all traffic received on port 5 with a destination of port trunk 1 (Trk1) and any
port in the range of port 10 to port 15. To create this filter you would execute
this command:
HP Switch(config)# filter source-port 5 drop trk1,10-15
Later, suppose you wanted to shift the destination port range for this filter up
by two ports; that is, to have the filter drop all traffic received on port 5 with
a destination of any port in the range of port 12 to port 17. (The Trk1 destination
is already configured in the filter and can remain as-is.)With one command
you can restore forwarding to ports 10 and 11 while adding ports 16 and 17 to
the "drop" list:
HP Switch(config)# filter source-port 5 forward 10-11 drop
16-17
Configuring a Filter on a Port Trunk
This operation uses the same command as is used for configuring a filter on
an individual port. However, the configuration process requires two steps:
1. Configure the port trunk.
2. Configure a filter on the port trunk by using the trunk name (trk1, trk2,
...trk6) instead of a port name.
For example, to create a filter on port trunk 1 to drop traffic received inbound
for trunk 2 and ports 10-15:
HP Switch(config)# filter source-port trk1 drop trk2,10-
15
Note that if you first configure a filter on a port and then later add the port to
a trunk, the port remains configured for filtering but the filtering action will
be suspended while the port is a member of the trunk. That is, the trunk does
not adopt filtering from the port configuration. You must still explicitly
configure the filter on the port trunk. If you use the show filter < index >
command for a filter created before the related source port was added to a
trunk, the port number appears between asterisks (
* ), indicating that the
filter action has been suspended for that filter. For example, if you create a