Live Capture Mode - ProfiTap PROFISHARK 1G User Manual

Live Capture Mode

ProfiShark 1G transmits network frames to the capture
software without altering them. It is transparent for packet
size, packet type, or protocols. All tags and encapsulation are
preserved (e.g. VLAN, MPLS, GRE).
The "Software Dropped Packets" counter in the Features tab
indicates the number of packets dropped by the driver in Live
Capture mode. It is not representative of the packets dropped
in Direct Capture (see "Direct Capture Mode" chapter). These
drop events are caused by high CPU usage.
The "Hardware Dropped Packets" counter indicates the
amount of captured packets that were dropped due to low USB
bandwidth (e.g. Gigabit capture on USB 2.0). In USB 3.0 mode,
this counter should not increase, even in full speed gigabit
capture.
NOTE Capture of small packet at full speed gigabit is
extremely challenging for processors and can cause software
drops. For that reason, another capture mode is available (see
"Direct Capture Mode" chapter).
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