TM3402A modem issues
We have been having the same issues as described in this post:
https://forums.cox.com/forum_home/internet_forum/f/internet-forum/24211/arris-tm3402-ongoing-problems
Basically, internet/phone/t...
Forum Discussion
Sorry, I meant the modem isn't supplying a public IP address for the router. The routers are working as intended and hand out local IPs without issue. Also, like I said, plugging in a PC directly to the modem still does not resolve an IP address when it is messed up.
Your router wouldn't get a public IP address. Only a provider (Cox, Verizon, AT&T, etc) assigns public IP addresses and this 1 public address would be assigned to your modem. This 1 IP address is how the rest of the Internet "sees" you.
You don't want the Internet seeing your personal router. Your personal router manages all your private IP addresses. The Internet doesn't see these addresses...nor the private address of your router.
Only the Cox-side of your modem gets the public address. Plugging a computer directly to the WAN port of a modem wouldn't involve another IP address because this connection is only at the MAC layer. It's a NIC-to-NIC connection so it only involves MAC addresses.
It sounds like you're having IP conflicts and when this happens, routers can terminate communications until its resolved.
Your routers may be issuing private addresses without issue but do these devices roam around the house from WiFi to WiFi?
