I am not really having a problem but I am tryin got optimise my connection and make it work better.
With ADSL connections one of the best things to do is to ensure that your MTU (ie the packet size on the network) is the same size as the permissable ATM frame. This avoids fragmentation of the pckets and therefore improves network connectivity. I know for a fact that my DSL provider needs an MTU set to 1452 (default on most systems/ethernet is 1500). I have changed the pppoe daemon settings in the config file and changed all the MTU values to 1452. But the pppoe daemon seems to ignore this and just leaves it at 1492. I finally got around it by adding "up ip link set [dev] mtu [size]" commands to the interfaces config file. Rgds ----- Original Message ----- From: "Vittorio Bertola" <[EMAIL PROTECTED]> To: "Julian Church" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, March 12, 2003 12:28 Subject: Re: [leaf-user] Bering/pppoe: ignoring mtu setting... On Wed, 12 Mar 2003 09:51:06 +0000, you wrote: >At 18:26 11/03/03 +0100, Thomas V. Fischer wrote: >>Unfortunately that is not it... I have CLAMPMSS set to Yess > >What symptoms are you seeing? What diagnostics are you doing to diagnose >the problem? Are you able to pass large packets over your pppoe link? Looks like a similar problem to the one I'm still having (reported to the list around a month ago). I'm not using shorewall (yet) so I tried to force the MSS mangling option by an iptables rule: iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu (as documented in howtos) but no result. So I'm manually setting MTU to 1452 on all machines on the internal network, and everything then works fine. -- vb. [Vittorio Bertola - v.bertola [a] bertola.eu.org]<------ --------> http://bertola.eu.org/ - Archivio FAQ e molto altro... <-------- ------------------------------------------------------- This SF.net email is sponsored by:Crypto Challenge is now open! Get cracking and register here for some mind boggling fun and the chance of winning an Apple iPod: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en ------------------------------------------------------------------------ leaf-user mailing list: [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html
