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From: schemers@vela.acs.oakland.edu (Roland Schemers III)
Newsgroups: comp.unix.ultrix
Subject: ifconfig and trailers
Summary: trailers or -trailers?
Keywords: ifconfig, trailers
Message-ID: <3411@vela.acs.oakland.edu>
Date: 16 Oct 90 21:28:10 GMT
Reply-To: schemers@vela.acs.oakland.edu (Roland Schemers III)
Distribution: usa
Organization: Oakland University, Rochester MI
Lines: 24

Hello! We are running Ultrix 4.0 on various machines:VAX 6000/310, 
DECsystem 5820, VAXstation 3100's, DECstation 3100's and DECstation 5000's. 
Someone suggested that we should have a -trailers option on our ifconfig 
command in rc.local. He said it ehances network performance.

Here is part of the man page on ifconfig:

          trailers  Enables the use of a trailer link level encapsulation
                    when sending.  This is the default.  If a network
                    interface supports trailers, the system, when possible,
                    encapsulates outgoing messages in a manner that minim-
                    izes the number of memory-to-memory copy operations
                    performed by the receiver.

          -trailers Disables the use of a trailer link level encapsulation.

By intuition it seems you would want trailers. Any comments?

Thanx, Roland
-- 
Roland J. Schemers III                              Systems Programmer 
schemers@vela.acs.oakland.edu (Ultrix)              Oakland University 
schemers@argo.acs.oakland.edu (VMS)                 Rochester, MI 48309-4401
"So what's your pointer?"                            (313)-370-4323