KUNBUS GmbH
14
KUNBUS Ethernet Test Access Point TAP-2100
3.2.4.2 Packet
details
If the TAP plugin is activated and the ethernet packet was captured with TAP 2100,
then additional information is displayed on the bottom line in section „KUNBUS TAP
Spy“:
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FCS
Original test total
Channel
Channel on which the data was captured.
• 1: top ports X1
• 2: bottom ports X2
Port
„A“, „B“, „C“ oder „D“ indicates which port received the data.
• „A“:connecter X1, Port1
• „B“: connecter X1, Port2
• „C“: connecter X2, Port1
• „D“: connecter X2, Port2
Since most devices today support automatic crossover (MDIX), it
may happen that both devices switch over to MDIX and the display
of A/B is swapped. The same applies to C/D.
CRC Error
The received packet has a faulty test total.
Alignment Error The packet is faulty
Timestamp
The packet time stamp is in ns, since turning on the Sniffer.
However, this value can be ignored, since the normal operating
system time stamp is replaced by the TAP time stamp, as soon as
the plugin is activated.
The main frames main frames of Wireshark are divided into three
parts. The packet lists, packet details, and hexadecimal packet
display are found here. The menu selection Edit/Preferences can
be used to select a column in the packet list.
3.2.4.3 Packet raw data
This section shows the packet data hexadecimal and as ASCII-text.The last 20 bytes
in the packet were attached from TAP 2100.
