Enterasys Networks Fast Network 10 - Manual (Page 85)

Port Filters
Fast Network 10 User Guide Page 5-5
Likewise, you can assign an Exit port one of the following restrictions:
• Only allow a certain number of multicast packets every “n” seconds
and then stop transmitting.
• Filter a packet destined for this port that matches all of the fields in the
Port filter.
Port filters can include multiple filtering conditions. This makes it
possible to configure very specific filters. For example, a Port filter could
be configured to filter all AppleTalk packets from Port 2 whose
destination address is XYZ.
In this example, three filtering conditions are specified. The Port filter
could be logically represented as:
Filter packets if:
• They are from Port 2.
• They are AppleTalk packets.
• The destination address is XYZ.
The FN10 allows you to implement up to 100 Port filters (total, for all
connected ports). The various types of filtering conditions that can be
specified are referred to as fields.
5.2.1 Configurable Fields
Port filters can be configured to selectively filter network traffic based on
specific Entry and Exit ports. Entry port filters include filtering
conditions on a port that is to receive a packet. Exit port filters include
filtering conditions on a port to which the packet is destined.
Each Port filter can contain entries for the configurable fields, with the
exception of the Port/Group Match and Port/Group# fields that are only
used with Exit port filters. If you do not specify a value for a particular
field, that field will not be used.
The Type field (Entry or Exit) must always be specified, since it
identifies which traffic flow the FN10 is to observe for filtering. The
default is Entry.