Memorizing the Cisco IOS command line editing keys can seem like a tough task. With modern keyboards that have up/down/left/right arrows, we do not find ourselves dependant on these keys. It is difficult to remember them when you are not using them on a daily basis. Here is my thought process behind learning and remembering the keys. Forward and Backwards - Characters and … [Read more...] about HowTo: Learn Cisco IOS Command Line Editing Keys
Q: OSPF DR Election – Why Priority Doesn’t Take Effect Right Away
I get asked quite often why the OSPF designated router will not change immediately when you set a high priority on a router. This is my stab at explaining why this is, and why you may see some strange behavior. The router priority and OSPF router ID are the factors for determining who will become the DR and BDR. If a loopback interface is present the lowest numbered loopback … [Read more...] about Q: OSPF DR Election – Why Priority Doesn’t Take Effect Right Away
HowTo: Split VMWare VMDKs into 2GB Chunks
Did you already create a VMware machine and want to split your disk into 2GB chunks so that you put it on a FAT thumb drive to move somewhere? Today we generally do not have to worry about moving files over FAT media anymore, but there is always that one time when you need to do it. If you have spaces in your path/filename make sure you include your path/filename in … [Read more...] about HowTo: Split VMWare VMDKs into 2GB Chunks
What you need to know about KRACK
DONT'T PANIC! It's going to be ok... The Hackers Are Not Coming The only way to exploit this is for the attacker to be able to "hear" your wireless signal. That means they need to be very close to your wireless device and WiFi router/AP. This is not an exploit that someone is going to come over the Internet from a foreign country and compromise your … [Read more...] about What you need to know about KRACK
How to prepare for a certification exam
One of the most popular questions I get asked when I teach a class that maps into some type of industry certification is what do I need to know to pass the exam. That is why you are in the class, to learn the objectives. But don't forget to prepare yourself mentally for the exam as well... The obvious technical stuff. Get a good night sleep the night before. Go to the exam … [Read more...] about How to prepare for a certification exam