H Tcp Status Transitions - Omron CP1L-EL20DR-D Operation Manual

SYN
RECEIVED
CLOSE
snd FIN
FIN
WAIT-1
rcv ACK of FIN
FIN WAIT-2
rcv FIN
snd ACK
Number
00000000 CLOSED
00000001 LISTEN
00000002 SYN SENT
00000003 SYN RECEIVED
00000004 ESTABLISHED
00000005 CLOSE WAIT
00000006 FIN WAIT 1
00000007 CLOSING
00000008 LAST ACK
00000009 FIN WAIT 2
0000000A TIME WAIT
Appendix H
TCP Status Transitions
CLOSED
Passive OPEN
LISTEN
rcv SYN
snd SYN, ACK
rcv SYN
snd ACK
rcv ACK of SYN
ESTABLISHED
CLOSE
snd FIN
rcv FIN
snd ACK
CLOSING
rcv ACK of FIN
TIME WAIT
Status
Connection closed.
Waiting for connection.
SYN sent in active status.
SYN received and sent.
Already established.
FIN received and waiting for completion.
Completed and FIN sent.
Completed and exchanged FIN. Awaiting ACK.
FIN sent and completed. Awaiting ACK.
Completed and ACK received. Awaiting FIN.
After closing, pauses twice the maximum segment life (2MSL).
ACTIVE OPEN
snd SYN
CLOSE
CLOSE
SEND
snd SYN
SYN
SENT
rcv SYN, ACK
snd ACK
rcv FIN
snd ACK
CLOSED
WAIT
CLOSE
snd FIN
LAST-ACK
rcv ACK of FIN
Timeout=2MSL
CLOSED
Meaning
803