Every 10/100 device I've seen in the last 10 years has used 1 chip to handle the 10/100 PHY. This means that it would be (IMO) HIGHLY unlikely that only the 100Mbs portion could/would fail, I would expect all or nothing.
Based on past experience (is there such a thing as *future* experience?) I would suspect the switch (I am assuming it's a cheapie Linksys type device?) and/or the cabling. My suggestions would be to check/replace the cabling. Move the switch physically closer to the router, try plugging a PC directly into the router (might need a crossover cable for this). What are you usng for a router? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larry Cook Sent: Wednesday, December 08, 2004 8:19 AM To: GNHLUG Subject: Can only the 100Mbs part of a 10/100Mbs router fail? I'm having a network problem that appears to be that the 10/100Mbs ports on my router are no longer working at 100Mbs, but are working at 10Mbs. Is it possible that just the 100Mbs part could fail? Here's my scenario if anyone is interested. Connected to the router are the following: Computer #1 w/ 10Mbs NIC Computer #2 w/ 10/100Mbs NIC (auto-senses to 100Mbs) 100Mbs switch Computer #1 (10Mbs) works fine, but Computer #2 (100Mbs) and everything behind the 100Mbs switch cannot get to the router. Switching ports on the router and power-cycling the router made no difference. I put computer #2 (100Mbs) behind the 100Mbs switch and it can get to all computers behind the switch, but not to the router. So this tells me that the NIC in computer #2 is okay. It also seems to imply that the 100Mbs switch is okay since computer #2 can talk to another 100Mbs computer behind the switch. If I replace the 100Mbs switch with a 10Mbs switch, then everything behind it can now get to the router, including computer #2 which auto-senses to 10mbs. But when I move computer #2 back to the router, it auto-senses to 100Mbs and cannot get to the router. So the only thing that seems to explain my problem is that the 100Mbs part of my router has gone bad, although devices connecting to it are auto-sensing to 100Mbs. Or is there something that I am overlooking, or something else I should try? Thanks, Larry _______________________________________________ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss _______________________________________________ gnhlug-discuss mailing list [EMAIL PROTECTED] http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss