On 05 May 2006 19:57, John Blinka wrote: > Daniel da Veiga wrote: > > How are the boxes connected to the network? A hub? A switch? Router > > maybe? Try using the network spot (where one of the failing boxes is > > connected) with a notebook or another machine that you know has no > > problems. Also check the cables and other network devices between the > > boxes and the DHCP server. I doubt a software failure would get all > > your boxes down at the same time. > > > > So, its my bet, a physical problem, but I'm not an expert. > > A reasonable bet, but I'll have to apologize for omitting some information: > there are two rooms of terminals each connected via hub to > the network backbone. Both rooms have the same problem, so it's probably > not network hardware. I've seen this sort of problem before arise from > ltsp software configuration, so software problems at the server can > bring all > the terminals down.
Right. Somewhat besides your question: Are you really using hubs? I also seem to remember from your original post that the terminals are connected by 10Mb/s which makes sense if you are using hubs. From my experience with server / thin client configurations, I would suggest to replace the hubs by switches and use 100Mb/s full duplex connections. That should boost the performance of your terminals by far. Anyway, this has nothing to do with your current problem. > Between the time when the server was working and the > time it stopped working, I have probably upgraded some portion of the > ltsp package. I'm wondering whether I inadvertently clobbered part of the > working configuration when I did so. Please post your ifconfig output on the server and also the routing table. Are you sure your server sees the dhcp requests at all? Run tcpdump on the appropriate interface on the server and boot just one terminal. Does the request come through? Is dhcpd listening on the right interface? You mentioned a power outage. So some configuration could be messed up. A power outage can also be accompanied by some power surges. That could fry the ethernet card in your server. Can you connect to it with a fat client? With dhcp? With a static IP configuration? What happens if you plug a thin client directly into the server's ethernet card with a cross-over cable? Uwe -- Why do consumers keep buying products they will live to curse? -- gentoo-user@gentoo.org mailing list
