What is your gateway? Have your checked your routing tables, and your firwall? I don't know how to setup the iptables my self but I have seeen this cause by that before. let us know will ya! On Mon, 2004-07-19 at 16:04, Scot L. Harris wrote: > On Mon, 2004-07-19 at 09:45, sam@xxxxxxxxxxxxx wrote: > > Hi, > > > > i'm running Fedora Core 2 on my server - which, for the most past works > > quite well.. kudos to the dev team. However, i have a minor problem i > > cannot seem to fix and is thus: > > > > i have two network cards ( sis900 and usb200m ) and the first is connected > > to my dsl300+ (dlink) modem at 10mbit and the other is connected to a > > 10/100 switch that feeds the local lan. if i unplug the dsl300+ from the > > rj45 my local lan works quite fast 8MBytes ftp transfers etc to the local > > net via the usb200m. however if i plug the modem in i only get 120kbyte > > transfer speeds and such. i have switched the modem to the other nic and > > the same thing happens. for some odd reason i can only get good speeds to > > / from the server to the local net if i only make the local net nic 10mbit > > with mii-tool OR unplug the modem and thus get 100mbit speeds.. > > > > help! > > > > regards, > > Sam. > > So if you disconnect the modem (10Mbit) the transfers are fast on the > LAN side. And if you set the LAN NIC to 10Mbit and connect the modem to > the other NIC your transfer speeds are fast? > > Have you looked at the stats on the interfaces to see if you are taking > any errors? > > ifconfig -a > > will give you a listing of each interface. Pay attention to the RX and > TX lines, you will see counters for errors, dropped, overruns, and > frame. If for some reason you are getting errors on packets they will > be retransmitted. Lots of errors will result in very poor performance > but the transfer will still get through due to the TCP/IP protocol. > > Also what type of switch are you using? I have seen some switches that > have problems negotiating the right settings. When using 100Mbit > connections you want to have full duplex set. For 10Mbit connections > half duplex is usually the default. If you have a duplex problem > between the NIC and the switch you will see the error count increase > during a transfer. > > >From the description it almost sounds like the interface connecting to > the modem is forcing either duplex or speed settings on the other > interface. Have you checked that using mii-tool in both configurations? > -- > Scot L. Harris > webid@xxxxxxxxxx > > It's not hard to admit errors that are [only] cosmetically wrong. > -- J.K. Galbraith -- ****************************************************************** Chadley Wilson Soon 2 B RHCE Linux Rocks Welcome to my world. Enjoy the adventures of Linux *************************************************** Linux is easy, lazy people criticise, curse and fail.
