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Seeking Primer Material Xfinity -> SB 33v2 -> TPLink Router -> LAN

  • December 8, 2024
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I’m replacing my Motorola MG7500 with a SB33v2 which will service my TPLink Archer router.  I think I’ve established service to Xfinity, but can’t seem to raise the router in any configuration -- my LAN connection shows a router through Xfinity which makes me believe the router on my side is being circumvented.

I am getting traffic from the internet back to my laptop in the below configurations:

cable → modem→ router→ switch->laptop

cable → modem → router→ laptop.

Do I need to reset anything on the modem proper?

Is there some guidance on troubleshooting?
Is there an intermediate step available to connect to router directly?  

 

Thank you for any support you can offer.

 

Sincerely,

CW

 

Best answer by plemans

While the sb33 has 2x ethernet ports, xfinity only supports 1 device connected to it. So if you’re laptop is connected and working, xfinity has assigned the public ip address to the laptop and not the router. Disconnect everything from the modem, power it off for 10 minutes, then power it back on. Once its fully booted, connect only the router to the modem. ONLY the modem. 

Then run setup on the archer. 

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plemans
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  • December 9, 2024

While the sb33 has 2x ethernet ports, xfinity only supports 1 device connected to it. So if you’re laptop is connected and working, xfinity has assigned the public ip address to the laptop and not the router. Disconnect everything from the modem, power it off for 10 minutes, then power it back on. Once its fully booted, connect only the router to the modem. ONLY the modem. 

Then run setup on the archer. 

Current setup: Netgear CM3000-->Netgear RBE973S-->2.5gig tp-link switch, Xfinity 2.4gig/350mbps

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