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From: dave@uwvax.ARPA
Newsgroups: net.unix-wizards
Subject: Re: 4.2 TCP, large packets and pronet-drivers
Message-ID: <367@uwvax.ARPA>
Date: Mon, 6-Aug-84 21:41:00 EDT
Article-I.D.: uwvax.367
Posted: Mon Aug  6 21:41:00 1984
Date-Received: Thu, 9-Aug-84 03:46:34 EDT
Organization: U of Wisconsin CS Dept
Lines: 19

I got a number of replies to my question.  This one pretty much says
it all:

> Sure, we had this problem.  The problem is that the 4.2 code seems to
> decide randomly whether to use trailers or not (actually, it's not
> random, but I don't understand the algorithm - only large packets
> will be sent with trailers, though...)  If your gateways don't
> understand trailer protocols (as ours don't), then the large
> packets sent with trailers will never get through.
> 
> Our limited experience with trailers was that they made essentially
> no difference in throughput at any time on any type of connection,
> so we just turned them off.
> 					-Larry Allen

-- 
Dave Cohrs @ wisconsin
...!{allegra,heurikon,ihnp4,seismo,ucbvax,uwm-evax}!uwvax!dave
dave@wisc-rsch.arpa