Reference Manual Instruction Manual

Publication 9220-052C-EN-P - August 2002
4-4 Triggers and Filters
Status of Frames
A frame status can be defined in three ways:
•
Good: a frame correctly received by the Traffic Analyzer tool.
•
Bad: the Traffic Analyzer tool has detected a problem with this
frame (e.g. a CRC problem).
•
Null: a frame without any data.
Type of Frame
A frame type can also be defined in three ways:
•
Scheduled
•
Unscheduled
•
Moderator
See page 1-2 for a definition of frame types.
How to Configure a Start Trigger on Data
When you want to add trigger onto data, you add a Start Trigger on
Data condition. This implies that you are looking for a specific
element and that you know its source, the type of frame, and its
destination.
At the LPacket level, the standard trigger only checks for the
Producer/Consumer MAC ID in a Generic LPacket or for the
Destination MAC ID in a Fixed LPacket. Within these limits, you can
create an unlimited list of trigger conditions that will not affect the
processing time during the record.
If you want to start after a specific LPacket - for example if there is a
sign of future network troubles - you can create a unique and
elaborate trigger condition on an LPacket.
TIP
For a definition of Status, see below.
For a definition of Type, see page 1-2.