I have only a fairly basic understanding of networking, and am particularly light on understanding of routing, so looking for a little help from the Ars collective on this issue I have. At my place of ...

Now, I've checked on all the routers listed, and none of them have that network directly connected, and it's not in their routing tables. There are no interfaces with any IPs assigned in the ...

I ran into Tony Hain at NANOG last week, and he told me he had gotten pounded with questions about IPv4 address exhaustion after my post discussing his and Geoff Huston’s studies. His response to them ...

http://ipexpert.ccieblog.com/ – OSPF is a topic that must be absolutely mastered for the CCIE lab exam. Many students understand the fundamental concepts, but get ...

Even Jeff Doyle tells me that I should do a little blogging with OSPF. What’s a networker to do with that kind of backing? And a few others expressed some interest as well – in understanding LSAs ...

OSPF is a popular interior gateway protocol, frequently encountered by network engineers. Here's how to get it up and running in a network. Open shortest path first, or OSPF, is a routing protocol ...

Joel is an internationally recognized expert in the areas of security, networking and messaging. Follow him on X (formerly Twitter) @joelsnyder. Building enterprise networks with routers and switches ...