About Packet Filtering - 3Com LANPLEX 6000 User Manual

14
About
Packet Filtering
C
REATING AND
P F
ACKET
This chapter describes how to create and edit packet filters using the packet
filter language. This chapter also provides instructions for how to list,
display, and delete currently defined filters, load packet filter definitions
created in an ASCII-based editor onto the LANplex system, and assign filters
to ports on a switching module.
Independently configurable packet filtering is provided for the various
packet processing paths on each Ethernet and FDDI port of a switching
module. The packet processing paths are defined in Table 14-1.
Table 14-1 Packet Processing Paths
Path Description
Transmit all All frames that are transmitted to the segment connected to the port
Transmit All multicast (including broadcast) frames that are transmitted to the
multicast segment connected to the port
Receive all All frames that are received by the port from the segment connected
to the port
Receive All multicast (including broadcast) frames that are received by the
multicast port from the segment connected to the port
When you create a packet filter, you can assign it to the transmit and/or
receive paths of each port.
Filters are stored on their assigned switching module(s), which means that
all operations on filters are module specific. You can specify multiple
switching modules when administering filters. If a switching module is
moved to a different slot or chassis, the filters on that module are
automatically removed.
U
SING
ILTERS