I have a new WNDR4300 connecting to a new cable modem Motorola Surfboard SB6141 and they will not work together (i.e. bouncing ethernet connection).
Is there anything special about this combination? Or special about a Charter cable modem setup? It seems pretty generic. The modem and cables are known-good.
I mean the WNDR4300 does not get a solid connection from the SB6141. Because the ethernet ports do not show connection, or if they do it's only for a few seconds- a DHCP lease is good for 10-20 seconds. The port is bouncing (up-down). I can occasionally get through the router to the modem config page but then it drops again. The modem is cycling through it's auto-config looking for the client. The router is super slow to respond on port 80 at this time.
Of course: - Using the ethernet cable provided (and tried another) in the right ports - Power cycled the modem - Power cycled the router - Power cycled both (both ways) - verified router has basic settings for Internet and WAN - tried disabling Security options (SPI firewall, respond to ping on WAN, etc.) - even tried putting a different MAC in the router config
The thing is, I have an old Linksys WRT150 with DD-WRT programming- and it works instantly with the modem. I mean bang- 5 seconds and good sync. So the modem and cables are known good.
I've seen weird compatibility issues before. I am considering flashing DD-WRT on this 4300 just to try that- so while I may not be an Apple Store Genius (haha) yes, I think the basic stuff is covered. But you never know.
Just wondering if anyone else has seen this kind of thing? Or suggestions? Frankly I don't have the patience for level 1 help desk. I don't want to reinstall Windows to fix this.