To pass the BSCI exam and move one step closer to CCNP certification success, you’ve got to know how and when to use debug commands to troubleshoot and verify network operations. While you should never practice debug commands on a production network, it’s important to get some hands-on experience with them and not rely on [...]
To pass the CCNA exam, you’ve got to know how to work with IGRP and EIGRP unequal-cost load balancing. You may not see much IGRP in production networks anymore, but you’ll see a lot of EIGRP, and part of fine-tuning your EIGRP network is making sure that all paths are in use while allowing for [...]
If there’s one CCNP / BSCI topic that looks so easy but can lead to a real headache, it’s route redistribution. I’m not even talking about the routing loops and suboptimal routing that can result when route redistribution is done without proper planning - I’m talking about the basic commands themselves. Leaving [...]
Part of studying for CCNA exam success is keeping all these new commands straight in your head! And let’s face it, there are a lot of commands you need to know in order to pass the CCNA exam and earn that certification. Here’s a review of some very important distance vector and static routing commands [...]
DNS behaviors of a Cisco router are important topics for both the CCNA exam and real-world production networks, and you probably didn’t know there were so many DNS details before you began studying for the exam! In this tutorial, we’ll look at the ip name-server command and its proper usage.
When a command is mistyped on [...]
As a CCNP candidate, as a CCNA, and in getting ready to pass the BSCI exam, you may be tempted to breeze through your static route studies, or even skip them! That’s because static routes are easy enough to configure, and as long as you remember the syntax of the ip route command, you’re in [...]
Learning IPv6 is paramount in your efforts to pass the BSCI exam and go on to earn your CCNP, and it’s going to help in your real-world networking career as well. IPv6 can be confusing at first, but it’s like anything else in Cisco or networking as a whole - learn one part at [...]
To pass the Cisco CCNA and CCNP certification exams, as well as becoming a world-class networker, you’ve got to know how and when to use floating static routes. And if you’re wondering what makes them “float” — read on!
In this example, R1 and R2 are running OSPF over a Frame Relay network, 172.12.123.0 /24. They’re [...]
For CCNA exam success, you had better know what split horizon is, how to turn it off, and when to turn it off. Knowing when to turn split horizon off is also important in production networks, because it can cause a hub-and-spoke network to have incomplete routing tables on the spokes.
Split horizon exists for [...]
In preparation for your CCNA and CCNP exam success, you’ve got to learn to troubleshoot Cisco routers. And while ping is a great basic IP connectivity tool, it doesn’t give you all the information you need to diagnose network connectivity issues.
Let’s say you have six routers between CityA and CityB. You send a ping from [...]
