User`s guide

Filters
5-13
Values greater than 3600 (one hour) are not valid; a value of zero
indicates that no alarms should be generated. Zero is the default.
Threshold
Number of occurrences allowed within the specified threshold
time; occurrences above this number cause an alarm to be
generated. (The ATX’s
configAlarmDynamic MIB parameter must be
set.) Zero is the default.
Filter Index
Filter number for this filter. For example, a value of one indicates
that this is the first filter in the filter table. If you use the default
index of 1, any other filters you have defined will be renumbered
starting with 2. Although filters are assigned to a port, filter
indexes are not; they are assigned sequentially to all filters for all
ports. One is the default.
Combination Port Filter Options
In addition to the configurable fields, there are two options you
can also use when you set up your filters. They are described in the
sections below.
Pseudo Filter Option
Any of the combination port filters can be set to pseudo or real
mode. In pseudo mode, the filter generates statistics, counting how
many packets met the filtering criteria and sends an alarm to the
NMS. It does not actually block any traffic.
The pseudo filter option provides a unique traffic monitoring
capability. Uses of this capability include:
• Determining the effect a particular filter would have, without
actually invoking it.