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Modem vs. Router: What's the Difference?

Understand the roles of common home-network equipment.

Quick Answer

The modem/ONT connects the home to the provider; the router manages the local network and usually provides Wi-Fi.

Step by Step

  1. Determine whether the problem affects one device or every device on the network.
  2. The modem/ONT connects the home to the provider; the router manages the local network and usually provides Wi-Fi.
  3. Change one setting or component at a time and test again.
  4. Record existing router/network settings before changing passwords, DNS, addressing, or advanced configuration.

If That Doesn't Work

  • Router menus, indicator lights, and terminology vary by manufacturer and internet provider.
  • Avoid factory-resetting a modem/router unless you know how it is provisioned and have the information needed to restore the connection.