[e2e] two questions about the Internet
Andras.Veres at eth.ericsson.se
Wed Apr 11 09:42:07 PDT 2001
We have collected two traces on a small ISP
network (33k modems). The original idea was
to measure the time delay between the first
TCP SYN and the ACK. Although this delay
is not strictly the RTT of the path, since
it contains possible SYN retransmissions and
the response delay of the server itself,
it is a good estimation of the RTT seen
from a modem user's perspective.
Sally: The logs can be used to investigate
delay statistics, and the correlation between
delay and the time of the day.
To correlate the delays with the end-to-end
path, e.g., get hop-counts, we would need
both IP addresses of the connection. I have
all the necessary data to add the addresses
to logs, but first I will need authorization
to release this info.
Anyway, for now, I can release the just the
raw delays, see below.
The logs contain the raw data: in a
<timestamp delay> format.
You can download the logs from:
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