From mboxrd@z Thu Jan 1 00:00:00 1970 From: bert hubert Date: Thu, 28 Feb 2002 16:50:42 +0000 Subject: Re: [LARTC] TCP MSS clampage Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org On Thu, Feb 28, 2002 at 04:02:54PM +0000, Tim Carr wrote: > Hey, > > My internet is provided via ADSL using PPPoE. When I take a look at > ifconfig's output, I see that eth0 has an MTU of 1500, and ppp0 has an MTU > of 1492. I don't _think_ that rp-pppoe (my pppoe util) is clamping the MSS. > I am noticing some latency when there's a lot of bandwidth in use (but not Don't think, meassure :-) > >90%). What should I clamp, eth0/ppp0? How much? And what with, rp-pppoe, > or tc/iproute2/etc ? I guess I don't really understand clamping MSS, can > someone explain it in laymans terms? I have read the lartc-FAQ, and the only > time I see clamping-MSS mentioned is section 15.7, which doesn't really > explain why you'd do it. If you don't experience any problems then by all means do not tcp clamp. rp-pppoe comes with wonderful documentation, I suggest you read it :-) Regards, bert -- http://www.PowerDNS.com Versatile DNS Software & Services http://www.tk the dot in .tk http://lartc.org Linux Advanced Routing & Traffic Control HOWTO _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/