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Forum Discussion
Internet Issue CM500-100NAS
I have a CM500-100NAS modem, hooked with an Asus RT-AC68U router, and a TP-Link 5 port switch. The connection was typically router into modem, switch into router. Everything relatively was fine, toda...
If the modem works with a computer directly connected, it isn't the modem.
Your other issues aren't really issues. they're expected results. The ISP only assigns 1 public ip address to each account. Normally, that gets assigned to the router and the router then assigns private IP addresses (simplified version). When you're going directly from modem----device, only a single device will be able to be connected because the modem was only given 1 public ip address and there isn't anything to take that IP and assign private IP addresses.. And if you change it, you'd have to disconnect the modem and power it off for a couple minutes before connecting something else to it. That allows the ISP to re-assign the ip address to a new device. That's why when you connect modem---->switch, only 1 device will work.
Overall, it means you have an issue with your router.