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Bytes in flight

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Hi all,i have one query that in a normal tcp communication without sack lets say if server sends 3 segments of data each having 1290 bytes of data which client never receives(lost in transit) so upon receiving dup ack server is retransmitting 1290 bytes of data but in seq+ack analysis menu "Bytes in Flight" is showing 4384 bytes but question is sender has just send 1290 bytes.how bytes in flight calculated here.

asked 17 May '13, 09:29

kishan%20pandey's gravatar image

kishan pandey
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this doesnt add up. Do you have a trace you could post at http://cloudshark.org? Only if not confidential.

(17 May '13, 10:00) Jasper ♦♦

jasper does bytes in flight means acknowledge data,please correct me if i m wrong

(20 May '13, 04:10) kishan pandey

i means unacknowledged

(20 May '13, 04:11) kishan pandey