Flow Visualizer TCP Trace graph flags
The following table describes each of the flags in the TCP Trace graph of the Flow Visualizer.
|
Client
|
Server
|
Flag
|
Description
|
|---|---|---|---|
|
|
yes
|
|
TCP PUSH flag set (appear as a diamond, rather than an arrowhead, and do not have a text label)
|
|
yes
|
yes
|
FIN
|
TCP FIN flag set (shows a square, rather than an arrowhead)
|
|
yes
|
yes
|
SYN
|
TCP SYN flag set (shows a diamond, rather than an arrowhead)
|
|
yes
|
yes
|
U
|
TCP Urgent flag set
|
|
yes
|
|
RST_IN
|
TCP RST flag set in ACK packet from client
|
|
|
yes
|
RST_OUT
|
TCP RST flag set in packet from server
|
|
|
yes
|
R
|
Retransmitted data (at least one byte of SEQ overlaps)
|
|
|
yes
|
O
|
Out of sequence data
|
|
yes
|
|
Z
|
ACK packet with a zero window
|
|
|
yes
|
P
|
Zero window probe
|
|
yes
|
yes
|
!
|
The Expert identified an event for this packet
|
|
yes
|
yes
|
HD
|
Hardware Duplicate (also called IP Local Routing)
|
|
yes
|
|
S
|
Selective ACK (also shows a purple line, spanning the acknowledged sequence numbers)
|