[45876] in North American Network Operators' Group
Re: Satellite latency
daemon@ATHENA.MIT.EDU (Barb Dijker)
Tue Feb 26 22:31:35 2002
Message-Id: <5.1.0.14.0.20020226195842.00a07c60@www.netrack.net>
Date: Tue, 26 Feb 2002 20:09:01 -0700
To: "Tim Devries" <zsolutions@cogeco.ca>
From: Barb Dijker <barb@netrack.net>
Cc: <nanog@merit.edu>
In-Reply-To: <014d01c1bf3b$44bfca00$ea9a8d18@evilinc>
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I have a tachyon.net system. 600ms is typical with a good aim.
Higher latitudes are more error prone. They don't do tcp/ip over the
up/down link. They effectively terminate the tcp/ip session on the
local lan (answering handshake and acks), encapsulate, and
proxy for you on the other end. It makes a BIG difference in overall
performance for typical things like surfing and mail delivery.
Doesn't help much for interactive work. Type ahead at
600ms is much better than 2x that. vi is usable.
Our unit is available for demos and events.
DirecPC (Hughes) now has a business grade service called
DirecWay. Haven't tried it. One would expect it
would be better than the ones intended for residential only.
It claims to go to 1.5M down like Tachyon.
Barb Dijker
NeTrack
