Am Do 04.05.2006 15:05 schrieb Solar Designer <solar@private>: > What you describe sounds like a problem with path MTU discovery, > perhaps > related to your ADSL modem (is one involved?) or your ISP. > > The documentation for rp-pppoe suggests setting CLAMPMSS=1412 in > pppoe.conf - so just do that if you're using this package. Otherwise, > you can try adding: > I'm connected to an cisco-router with an E3 interface (10Mbit) to the internet, so i would say it's not an MTU problem to the outgoing interface (because I do have perfect bandwidth on the local machine, but not if it's acting as gateway) > [0:0] -A FORWARD -p tcp --syn -j TCPMSS --set-mss 1412 > > to /etc/sysconfig/iptables on the gateway. Alternatively, you can try > reducing the interface MTU on all hosts in your LAN to 1452. all interfaces are using an MTU of 1500 additionaly i played with mii-diag and tried different settings on the LAN-interface (10, 100, FD, HD) without meaningfull differences > > This is kind of "TCP anti-tuning" - these settings are not optimal - > but > they should work around the problem - if it is in fact MTU-related. > > > How do i have to configure both lan-interfaces for best throughput? > > That's not what you need. What you have is not just suboptimal > throughput. Things just aren't working right. that's it. > > > When i look at the traffic-statistiks, there is a gap of 200ms > > silence > > followed by 300ms transmission. Why? > > I've provided a guess above. If it doesn't help, you'll need to post > excerpts of tcpdump output which demonstrate the periods of silence. > > Hope this helps and does not annoy other owl-users too much - although > it's not specific to Owl... > it's realy not specific to Owl ... but I'm running out of help
This archive was generated by hypermail 2.1.3 : Thu May 04 2006 - 06:29:37 PDT