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Router doesn't see cable modem
I've been using my R6400v2 for 6 months now - working fine. I just swiched from an xFinity Cable modem to an Arris Surfboard SB8200 The cable model is connected to to Internet (I'm typing this hard...
The SB8200 has 2x ethernet ports on the back. But only 1 device can be plugged into it for most ISPs.
So make sure that when you're going through setup that nothing else is plugged in.
Try this.
Turn off the modem and router and unplug all devices (including coax) from both.
Connect the coax back to modem and turn it on/plug it in. give it serveral minutes.
Then connect port 1 from modem to wan port on router.
Turn on router. give it several minutes.
Attempt setup on router
The SB8200 has 2x ethernet ports on the back. But only 1 device can be plugged into it for most ISPs.
So make sure that when you're going through setup that nothing else is plugged in.
Try this.
Turn off the modem and router and unplug all devices (including coax) from both.
Connect the coax back to modem and turn it on/plug it in. give it serveral minutes.
Then connect port 1 from modem to wan port on router.
Turn on router. give it several minutes.
Attempt setup on router
Thank you, plemans. That was, indeed the problem.
I only wish I had waited to see your answer.
I ended up spending over an hour (and $90 for a Support Contract) with a very helpful Netgear Support tech.
After many, many re-configs and re-boots, she finally had me disconnect the second cable from the SB8200
So it wasn't a Netgear problem after all.
I am NOT HAPPY that Arris does not mention th fact that you can't have two cables plugged in anywhere in their setup instructions.
After much research I understand what the two ports do, but Arris should make that VERY obvious in their instructions.
There are two Ethernet ports in the SB8200, why would I think I can't use them both at the same time.
Sorry it cost $90! But I'm glad to hear you got it working.
It is unfortunate that there isn't better education on the 2-4 port modems on the fact that for the average consumer, you can't use the extra ports. The higher end routers (with wan port aggregation) can, business class custumers, and some rare isps.