Your email client is broken. It posts emails in html/rich-text format.
Please repair it.
The TCP RTT calculations are working just fine.
If every second packet goes in the opposite direction and the congestion
window is only one segment
this is expected behaviour.
----- Original Message -----
From: Roger et Marie-José Nicholls
To: Ethereal Users
Sent: Monday, January 27, 2003 6:55 PM
Subject: [Ethereal-users] RTT Graph error
As you can see in the table below, the RTT values (laboriously) measured off
the RTT graph are in fact nothing more than the "time since last packet" of
the next outgoing packet.
TCVAL and TCSECR values (which I have checked OK with Windump) are ignored.
Packet time since TCVAL TSECR Graph
last packet RTT value
315 0.250100 9290 7407 in .189
316 0.189288 7456 9290 out
317 0.218539 9361 7413 in .22
318 0.220896
True RTT values are several seconds.
On downloads with timestamp disabled, the RTT graph also shows this time to
next outgoing packet.
I'm using Windows 95, TCP1323=2, Ethereal set up file 0.9.8 downloaded 14
dec, and winpcap 3 0 a4.
Can anybody help?
Roger
