Firewall Wizards mailing list archives

RE: RE: High Speed Firewalls


From: "David Newman" <dnewman () networktest com>
Date: Mon, 20 Mar 2000 16:25:41 -0500


That has mostly to do with things like round-trip delays for handshakes,
and TCP slow start.  If you take a sample out of the middle of such a
connection, for a much longer file, it will look better.

I think at some point, your constraining factor might get to be
latency.  The window size can only get to be 64K, right?

                              Ryan

Er, sorry to have to go through this again. This has nothing to do with
latency (delay) or window size. On the wire, user data (like the contents of
a file) is wrapped in packets. Packets have headers. Headers add overhead.
Ergo, it's not possible to put 100 Mbits of *user data* on the wire in one
second. Ergo, "wire-speed throughput" from an application perspective is a
myth.

Please reread the earlier thread -- this has been all been hashed over,
several times.

dn



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