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 ...

Background information: we have 2 iSeries in two locations. They both have a VirtualIP (Loopback) address of 10.10.130.1/32. One of them has 2 physical nics with 10.10.7.104 and 10.10.7.105, the other ...

So I've been messing around in GNS3 and created a topology which isn't quite working: Now, obviously this is a discontiguous network (I'm messing around to try and make stuff work when it ordinarily ...

Are two routers enough for practicing CCNA skills in your home lab? Maybe, maybe not. But you can practice a surprising number of CCNA-level router tasks with a two-router lab using the topology ...