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Date:      Thu, 6 Feb 2003 17:39:00 -0700
From:      Nate Williams <nate@yogotech.com>
To:        Doug Barton <DougB@FreeBSD.ORG>
Cc:        chat@FreeBSD.ORG
Subject:   High-latency/long-distance IP stack (was Re: cvs commit: CVSROOT access access.master access.ports)
Message-ID:  <15939.36.855969.496240@emerger.yogotech.com>
In-Reply-To: <20030206022854.G40993@12-234-22-23.pyvrag.nggov.pbz>
References:  <20030205233916.6156C2A89E@canning.wemm.org> <20030205231630.D32815-100000@patrocles.silby.com> <20030206022854.G40993@12-234-22-23.pyvrag.nggov.pbz>

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[ Moved to -chat ]

> > Didn't Harti Brandt say that he was working on satelite communications?
> > Perhaps he has plans to allow even larger RTTs to work well. :)
> >
> > "FreeBSD:  The best connection to Mars... or AOL"
> 
> You laugh, but various people, including Vint Cerf, are currently working
> on an IP stack (or something that can be made to look like an IP stack)
> that will work across those kinds of distances.

It really isn't that hard to do that, IMNSHO.  The hardest part is
finding good 'initial' values for timeouts (if the first packet gets
lost), since you don't want *too* long if it happens that the link is
short.  (Been there, done that. :)

Once you get the initial 'broad' issues sorted out and understand that
packet loss != congestion, the above stack isn't that hard to
build/design.


Nate

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