On Sun, Aug 29, 2010 at 12:27 AM, Nadav Har'El <n...@math.technion.ac.il>wrote:
> While I have quite a bit of networking experience, I have found myself > stumped by a frustrating problem in my home network - which surprisingly > appears Linux-specific - and I wonder if anyone ever saw such a thing. > > I have a typical home network. In one room, I have several computers, so I > want to use an additional switch there. I got an EDIMAX ES-3208P 100 Mbps > switch (90 shekels, at Bug). > > Now, what happens is that while my wife's Windows computer works well with > that switch, my Linux computer does not. Sniffing the network, I see that > my Linux computer sends out DHCP broadcasts (to get an IP address from the > house's DHCP server) or ARP broadcasts (to contact the gateway), but while > replies for these queries are being generated, they are not forwarded by > the > switch to my Linux computer! > > When I replace the switch with a 10-year-old hub I had lying around (good > thing I didn't toss that museum piece), suddenly everything works! > > I could have concluded that that EDIMAX switch is simply broken, if it > weren't for the fact the Windows computer works perfectly behind it! What > could possibly be the cause for the Windows computer to connect correctly > behind the switch, while the Linux computer doesn't? Has anyone ever seen > such a problem? > > What I am about to say is so far fetched, but having seen bizarre things on networking, I would suggest it anyways :) You didn't mention what was before this Edimax switch? The old Hub? It could be that there's an Ethernet negotiation problem, in such a way that your MAC doesn't get registered on the switch (?). Not necessarily a Linux problem. Maybe a NIC problem, or an Ethernet cable problem. Of course that with a Hub that would work anyways, because a Hub broadcasts to all ports, regardless of negotiation... So, did you try a different NIC? -- Shimi
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