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- From: jbvb@vax.ftp.com (James B. VanBokkelen)
- Subject: Re: Info on wireless ethernet link needed
- Message-ID: <930104143201@cream.ftp.com>
- Nntp-Software: PC/TCP NNTP
- Keywords: wireless ethernet bridging
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- Organization: FTP Software, Inc., Wakefield, MA
- References: <1993Jan4.145730.7888@mnemosyne.cs.du.edu>
- Distribution: na
- Date: Mon, 04 Jan 1993 14:32:01
-
- In article <1993Jan4.145730.7888@mnemosyne.cs.du.edu> jfurr@nyx.cs.du.edu (Joel Furr) writes:
-
- My office at Virginia Tech in Blacksburg, Virginia would like to establish
- a wireless ethernet connection with another office building that is across
- a busy street somewhere between a quarter mile and a half mile away,
- clearly visible via line of sight. The university refuses to trench
- between the two for various reasons including cost and disruption of
- traffic. Hence we'd like to know all there is to know about wireless
- ethernet products...
-
- The "wireless ethernet" products I've seen are oriented towards workgroups
- within small areas, where wiring can't be run or the hosts have to be
- moved frequently. Their range is limited due to low power, and their
- delivered throughput can range from "less than 10Mb/sec" to "much less
- than 10Mb/sec", depending on the coding techniques used and the propagation
- of their frequencies at your site. Most of them try to provide a "reliable
- link layer" which can play hob with TCP retransmit timing.
-
- For your purposes, you might do better with a "remote ethernet bridge", with
- either a dish <-> dish microwave link (Microwave Bypass is the vendor we used
- when we used to be in several buildings) or an infrared laser on each end.
- This delivers pretty close to 10Mb/sec in most weather conditions, but you
- may need a router on both ends to isolate the microwave "segment" - it has
- some idiosyncratic timing characteristics.
-
- James B. VanBokkelen 2 High St., North Andover, MA 01845
- FTP Software Inc. voice: (508) 685-4000 fax: (508) 794-4488
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