I had my 3400c on a Cable Modem for a few days and it was working fine, then after I think the 3400c went to sleep, I could no longer access the internet with my 3400c through the cable modem.
Versions of the Mac OS prior to 9.1 have dhcp lease retention difficulties across sleeps. Then they fail to renew the lease when the computer wakes up. So sometimes a reboot is required...
Also please define "no longer access the internet". That's a vague term that doesn't tell us if you forgot to open the garage door or if there's a massive pothole just beyond your driveway. :)
Are you saying your web browser gives you some error? Or are you saying some lower level network function failed -- Unable to obtain a valid DHCP lease? Unable to ping your local head-end (gateway) or any point beyond? Unable to translate domain names to IP addresses? etc
Adelphia, the Cable company in my area, said that my ethernet had gone out on the 3400c. I would like to know if someone could tell me how to find out if this is true or not.
A hardware failure is always possible, I guess. But there are a lot of software causes that should be investigated first.
A quick test... Plug the PowerBook into the cable modem. Power-cycle the modem. After it has sync'd to the cable system (all lights solid green), boot the PowerBook. Now turn on AppleTalk over that ethernet interface. AppleTalk is very picky. If the hardware doesn't sense (and report) all the proper continuity signals, AppleTalk will fail to initialize.
I am using Adelphia's Cable Modem with my Beige G3 and it is working fine.
For how many computers (IP addresses) is your account authorized? If only one, then you'll need to power-cycle the modem each time you switch between computers.
...Cable modems are told by the cable company how many devices (computers) to talk to. They remember those devices by tracking their ethernet (MAC) addresses. The only way to make the modem forget them is to power-cycle it -- physically unplug it and leave it unpowered for at least 30 seconds.
- Dan.
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