Adding a second router often creates double NAT, complicating device connectivity and blocking features like port forwarding. Most homes only need one device managing the network. If coverage is weak, a mesh Wi-Fi system extends a single network cleanly, unlike separate routers that create independent networks.
Alternatively, enabling access point mode on an existing router turns it into a simple Wi-Fi extender. If Ethernet is available, an access point uses that wired connection for better performance. When Wi-Fi is fine but ports are limited, an Ethernet switch adds connections without extra routing layers.
ISP gateways often require bridge mode to let a personal router take over, though this varies by provider and may affect gateway functions. Checking documentation before changing settings is essential to avoid disrupting other services.
Source: Engadget · Summarized by HeadlinesBriefing