Currently Being ModeratedSep 23, 2013 6:47 PM (in response to RobTalbert)
Just a bit more detail.
What mode is the AE setup for, bridge or dhcp+nat? Shoud be the later.
I have rebooted everything twice, and I know the cable is good because it works fine with the old modem.
What old modem is that? Do you mean router?
One simple thing if the modem is cable.. pure modem.. (edit.. just checked the model and it is), you need to shut off for 20min at least when you change routers? It takes that long for the ISP equipment to forget the MAC address of the device that it was allocated to. Sometimes it can be longer.. or you might even need to ring the ISP and ask them to reset the connection at their end.
The new AC model does also occasionally have cabling issues.. it is nothing to do with the actual patch cable it is the ethernet ports are not compatible in some way.. but tell us how the above works before we get into too much details.
Currently Being ModeratedSep 23, 2013 10:01 PM (in response to LaPastenague)
Thanks for the response. The setup is DHCP + NAT. The connection is Cable Modem (Comcast-Arris WBM760) connected via Cat-5 cable to the Airport Extreme 802.11ac which is then connected to my iMac via a Cat-5 cable.
When I said "old modem" I meant "old router" which is a Netgear WNDR3800.
I did call the Comcast support line and they reset the modem from their end. I did not wait 20 minutes however, so I could try that, although I have had two or three different routers over the past half dozen years and that has not been a problem before - but I could certainly try it.
Currently Being ModeratedSep 23, 2013 11:43 PM (in response to RobTalbert)
The AC model AE does seem to have issues..
I would put the wndr3800 back and use the AE plugged into that in bridge mode.
I would also run the wndr3800 on gargoyle firmware which is a lot better than netgear one.
Eventually Apple will get the firmware updaed and working.. but it still has some rough spots.