Was working on a system this morning and doing things by the book – but the router (Linksys with Cisco hardware) wouldn’t acquire an IP address from the cable modem.
I apologize that I don’t know the model number of either device – but a call to Charter Cable diagnosed the problem as an DHCP address request throttle violation – meaning the router had asked for an IP address to many times in a row, so the cable modem’s MAC address got put on a list that made the DHCP failed.
Luckily the solution was to just wait 5 min and the MAC address was removed from the list and everything came up fine. (Unplugged the router for over 5 min, plugged it back in – all was fine)
Dunno if this’ll help anyone with out model numbers in the post – but I’m hoping it might. Looking at the stats for my blog – the most viewed and commented on posts are the ones like this describing solutions I’ve found to problems.