On Tue, 2005-03-22 at 08:03 -0500, Shawn Iverson wrote: > On Monday, March 21, 2005 8:39 PM Rick Stevens wrote: > > > >The trick is that autonegotiation is somewhat ill-defined. > >Windows has hacks that work around issues such as you are > >having, but Linux doesn't. > > > >The solution is to force both ends to 100MbFD and turn off > >autosense. We have similar issues with Cisco and Extreme > >Networks stuff on occasion. I agree it "should work" but it > >often doesn't, so we don't even let them start the discussion. > > I definitely can relate. The network I help manage is all Cisco gear, > and I have the same trouble at times, so on most of the switches I force > 100/Full. Unfortunately, the BEFSR11 has no way to turn off its > autonegotiation, and coupled with a dumb auto-sensing switch, that is > bad news. However, even after autonegotiation I determine the Linksys > to have 100/Full, and I match it on the Linux box with 100/Full, I run > into trouble. It is only at 100Mbit that I have this problem. It's as > though the Linksys can't properly control the speed mismatch between its > WAN (10Mbit/HD) and LAN interfaces when Linux is a client on the LAN > side. > > -- > > Shawn > Shawn, I've been following this thread, I hope. Maybe there is a hardware problem with the Linksys or your NIC (or an incompatibility between them). Does you FC3 box behave the same regardless of the port it is connected to on the Linksys? Also, does ethereal reveal anything unusual? Another thing to try: Plug the cable modem into one of the LAN ports on the Linksys and restart networking on the FC3 box. You'll lose routing, any Linksys firewalling and NAT, but it should be okay for a short test. I've never dissected a Linksys router, but in the dlink each pair of switch ports share common PHY chips. I have an old dlink with two bad switch ports due to a lightning strike. One of the ports was unused before the strike. The other two ports and the WAN port are fine. All that said and rereading your other posts: Your problem might point to the NIC in the FC3 box since the same wiring and port work okay on your XP box. I assume it is a different machine. Bob...
