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To: Shawn Carey <smc@servtech.com>
cc: "Daniel O'Callaghan" <danny@panda.hilink.com.au>,
        freebsd-hackers@freebsd.org
Subject: Re: FTP Performance 
In-reply-to: Your message of "Wed, 07 May 1997 22:54:37 EDT."
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Date: Thu, 08 May 1997 08:32:02 +0100
From: Brian Somers <brian@awfulhak.org>
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> Daniel O'Callaghan wrote:
> [...]
> > 
> > Alternatively, try reducing the MTU and MRU of ppp's tun interface to 552
> > or 1064.  That cured Robert Chalmers' problem with his ISP's Ascend routers.
> > 
> 
> Yes!  That did it, thanks very much!

If you're running -current, I'd appreciate if you'd try putting the
MTU back and running with last nights patches.  This may be a
vj compression problem that should now be fixed.  I'd appreciate
any comments you have.

> One small thing: The only way I was able to effectively change the MTU
> was by hacking the ppp source to change DEF_MRU to 1064 in hdlc.h. 
> Using ppp's "set mru" and "set mtu" options did not work - the interface
> would go back to 1500 as soon as I connected with my ISP, even though I
> changed tun0's MTU manually with ifconfig.  Am I doing something wrong,
> or is ppp broken?  At any rate, I can certainly live with this since my
> ISP is the only system I typically connect to.

This was mentioned a while ago and is on my slate.  Looks like a
bug, and it's definitely known.

> Thanks again,
> -Shawn

-- 
Brian <brian@awfulhak.org>, <brian@freebsd.org>
      <http://www.awfulhak.org>
Don't _EVER_ lose your sense of humour....