So EIGRP is a great IGP - it's fast, flexible, and supports a ton of options to help you run your business network easily. I wrote out hopefully good instructions and requirements, as well as validation steps that should help those of you working the 'Unsolved' version, which you can download below. In the following topology I had a few different technologies to setup, so I created a clover-leaf type topology, where each leaf is a different tech, and you bridge them in the middle for seamless routing. Call me a liberal, but I think our right to freedom from illegal search and seizure means something. Even on private networks we now know the government is listening and copying data for analysis, and I'm just not cool with that. With the way corporate hacks are becoming bigger news items every day, I'd think any network engineer worth their salt is going to want to know how to encrypt traffic between controlled routers for just about everything. It's an incredibly simple and powerful tool which allows for good security. And the commands for a DMVPN and P2P GRE tunnel can be written in such a way that they can be simply copy and pasted to a new router to have it dial in, peer with your IGP, and start injecting routes. A router that doesn't support a protocol can be made to route it with no changes to the older router - just encapsulate it in something the older router understands and you're good to go. To a host traversing a GRE tunnel, the hops are transparent. It also includes a bunch of troubleshooting practice examples. In any case, you can find this book here on Amazon for $86. There are, of course, some switching technologies that you'll need to either do on a real switch or rent some lab equipment for because GNS3 doesn't (yet) virtualize switch ASICs. Most can be completed (mostly) with GNS3. Duggan's Cisco Press practice book, and I have to say, they are very well done. I've just finished all 3 labs out of Martin J. If all the practice labs you look at are at that cost, it's going to be a very expensive practice for a very expensive test. A great one for those with a subscription to CBTNuggets (which I highly recommend), you can check out one of my earlier posts that goes over their full-scale practice CCIEv5 lab.īut once that was done I started looking for more practice labs for download, or rented lab equipment, and I found a few, but most are very expensive - $400+ for a few labs. I've been spending time doing these large-scale labs.
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