Better to install Pi-Hole on router or switch/ RAM usage on Pi Zero

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The router and Pi-Hole need to be on the same address range. If your router range is 192.x.x.x, then the Pi-Hole needs to be 192.x.x.x or the router and Pi-Hole cannot communicate and the other devices connected to the router can't communicate with the Pi.

Example - your router IP is 192.168.0.1. Then your Pi-Hole should have a static IP between 192.168.0.x, where x is an unused IP address in the range 2 to 254.

How do I configure my devices to use Pi-hole as their DNS server?

Three methods Generally, there are three different methods that will enable devices on your network to be protected by Pi-hole. 1. Define Pi-hole's IP address as the only DNS entry in the router Rationale Only is italicized here for a reason: Pi-hole needs to be the only DNS server because it intercepts queries and decides whether or not they should be blocked. If you have other DNS servers configured, you may be sent to the correct domain, bypassing Pi-hole completely. Because of this, we re…

Why should Pi-hole be my only DNS server?

Reduced Ad Blocking Capability The main reason you should Pi-hole as your only DNS server is that you will see increased performance in the blocking of ads. If you have two DNS servers (Pi-hole and something else), your network clients may not always query Pi-hole for name resolution. If a query happens to be answered from a non-Pi-hole DNS server, your block lists will not apply (since that DNS server doesn't know about them). All Queries Need To Go Through Pi-hole First Since other DNS serv…