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Question

SB200v3 Internet Connection Issue

  • November 23, 2025
  • 1 reply
  • 7 views

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Front panel shows solid yellow lights indication stable connection (lights should be green/blue?), and router (ASUS) is fully connected and active (can be used with other modem). However, no internet connection available. I tried power cycling, but all lights return to solid with no connection available. 

1 reply

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Ensure that only one Ethernet connection is made to the SB8200. To isolate the issue, disconnect the router and connect a computer directly to the modem. Then, power cycle the modem and check if it provides an internet connection.

The SB8200 is a standalone cable modem and does not include a built-in DHCP server. As a result, when your internet service provider (ISP) activates the modem, it typically assigns only one public IP address, which supports a single internet connection.