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From: slerner@sesame.UUCP (Simcha-Yitzchak Lerner)
Newsgroups: net.dcom
Subject: Re: "BLAST" datacomm package
Message-ID: <223@sesame.UUCP>
Date: Mon, 29-Jul-85 17:29:12 EDT
Article-I.D.: sesame.223
Posted: Mon Jul 29 17:29:12 1985
Date-Received: Wed, 31-Jul-85 20:21:55 EDT
References: <197@brl-tgr.ARPA>
Distribution: net
Organization: Lotus Development Corp
Lines: 25

> 
> Anybody know anything about this? I never heard of it before, but, then, I'm
> often out-of-it... Is it actually one of the PD products we already know of,
> like Kermit, but under a different name? (That is just a wild guess so please
> don't flame if it is a ludicrous question.)

BLAST is not an old product with a new name.  It is a protocol similar
to XMODEM and KERMIT with one major exception.  Block ACK/NAK is done
in an asynchronous full-duplex fashion.  By not waiting for ACK/NAK at the
end of each packet, but continueing with data comm while waiting for the
ACK can greatly increase throughput in situations where turn-around time
is high (such as long distance via satalite and networks that wait for
silence for a second or two before they xmit your data.)


-- 
Opinions expressed are public domain, and do not belong to Lotus
Development Corp.
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Simcha-Yitzchak Lerner

              {genrad|ihnp4|ima}!wjh12!talcott!sesame!slerner
                      {cbosgd|harvard}!talcott!sesame!slerner
                                slerner%sesame@harvard.ARPA