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000201_owner-current-u…s.berkeley.edu_Thu Aug 4 22:53:47 1994.msg
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From: Scott Reynolds <scottr@plexus.com>
Subject: Re: What is best, PPP or Slip?
To: Danny Lepage <poutine@M3iSystems.QC.CA>
Cc: current-users mailing list <current-users@sun-lamp.cs.berkeley.edu>
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On Thu, 4 Aug 1994, Danny Lepage wrote:
> I'm currently using slip (14400 bps), and I'm looking to improved
> transfer performance. So, what is best, PPP or Slip ?
My personal opinion is that PPP with VJ header compression is superior to
CSLIP; either one is significantly better than SLIP.
> Also, is it possible to set MTU with slip ? If so, how ?
No; that's hard coded into the kernel. [/sys/net/if_sl.c]
> (If I remember right, MTU seems to be set ~256, but my provider
> suggest a MTU setting of 1500. If I managed to set it to 1500, will
> I have better networking performance ?)
If the line is "clean", I would expect there to be no significant
advantage in using a smaller MTU. However, it doesn't really impact the
efficiency of the connection all that much with header compression
enabled, so it's not a significant disadvantage, either.
As to turning on compression in the NetBSD SLIP code, I won't even guess,
since I've never used it.