12-6
Traffic/Security Filters and Monitors
Filter Types and Operation
Operating Rules for Named Source-Port Filters
â– A port or port trunk may only have one source-port filter, named or
not named.
â– A named source-port filter can be applied to multiple ports or port
trunks.
â– Once a named source-port filter is defined, subsequent changes only
modify its action, they don’t replace it.
â– To change the named source-port filter used on a port or port trunk,
the current filter must first be removed, using the no filter source-port
named-filter <filter-name > command.
â– A named source-port filter can only be deleted when it is not applied
to any ports.
Defining and Configuring Named Source-Port Filters
The named source-port filter command operates from the global configuration
level.
Syntax: [no] filter source-port named-filter <filter-name>
Defines or deletes a named source-port filter. The <filter-
name> may contain a maximum of 20 alpha-numeric
characters (longer names may be specified, but they are not
displayed.) A filter-name cannot be a valid port or port trunk
name.
The maximum number of named source-port filters that can
be used is equal to the number of ports on a switch.
A named source-port filter can only be removed if it is not in
use (use the show filter source-port command to check the
status). Named source-port filters are not automatically
deleted when they are no longer used.
Use the no option to delete an unused named source-port filter.
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