DHCP

Two computers and a hub.

Why Does My Home Network Only Work with One Computer at a Time?

If there is a conflict with your IP address, it could result in only one of the machines on your network connecting at a time.

Questions

What’s the Difference Between a Hub, a Switch, and a Router?

Hubs, switches, and routers are all computer networking devices with varying capabilities. Unfortunately, the terms are often misused.

Router

What is “Limited Connectivity” and How Do I Fix it?

“Limited connectivity” displays when your computer is having problems completing its network configuration. It might as well mean no connectivity.

Simple network

Why Can’t I Connect with a 169.254 IP Address?

When your computer can’t get an IP address any other way, it assigns itself a 169.254 IP address. It’s a sure sign of a problem.

a computer and router on a desk with a symbolic connection from the computer to the router, and from the router to the cloud representing the internet

Why Doesn’t My Machine’s IP Address Match What I’m Told on the Internet?

Ever wonder why your computer shows one IP address, but websites see something totally different? They’re both right. I’ll describe how your router juggles two addresses behind the scenes and how that protects you every time you go online.

Hello?

What is DHCP?

DHCP stands for Dynamic Host Configuration Protocol, and is how computers request and receive “dynamic” IP addresses as well as additional configuration information.