Many administrators forget—or don't even realize—that they can configure Dynamic Host Configuration Protocol (DHCP) on Cisco IOS routers and switches. David Davis discusses the pros and cons of this ...

I'm a noob to IOS, and I'd like to make sure that my configuration is doing what I think it's doing. I have a Cisco 881 connected to a cablemodem on the WAN port. The cablemodem assigns DNS servers ...

All Cisco routers have two special types of lines, and many Cisco routers have a third. What are these lines, and how do you configure them? These are things that every network admin should know.