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Re: Satellite latency
- From: Steven M. Bellovin
- Date: Tue Feb 26 21:09:26 2002
In message <014d01c1bf3b$44bfca00$ea9a8d18@evilinc>, "Tim Devries" writes:
>
>Hello,
>
>I think this question may have been asked before, but what is the minimum
>latency and delay I can expect from a satellite connection? What kind of
>delay have others seen in a working situation? What factors should be
>considered in end to end connectivity architecture when utilizing a
>satellite link?
>
>Any help appreciated,
Geosynchronous orbit is about 36,000 km from the center of the earth.
Round-trip to the satellite is ~72,000 km; the speed of light is
300,000 km/sec. That works out to 240 milliseconds at the minimum for
one-way packet delivery.
--Steve Bellovin, http://www.research.att.com/~smb
Full text of "Firewalls" book now at http://www.wilyhacker.com
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