This chart compares the current CCNA exams to the upcoming new exams that Cisco will release on February 24, 2020.  Read More

You have a lifelong dream of obtaining a Cisco CCNA Certification. Your parents refuse to talk to you until you have it. Your friends are mocking you because you don't have it. Even your cat is walking around, giving you attitude because of your complete and total lack of a CCNA Certification. What are you going to do about this? Read More

As you've probably heard by now, Cisco released some big news just a few days ago. They've announced major updates to all of their Certification exams, which will go into effect February 24, 2020. Read More

Email and web-based attacks are the most common points of entry for hackers in our current world of Information Security. Understanding the nature of these attacks is critical to existing and aspiring network engineers. Read More

For years, many network engineers and designers have ignored IPv6. They designated it as something they’d get to “someday”. But now they’ve run out of time to kick that can down the road. Read More

Don't Forget to tune into my Load-Balancing with PVST+ webinar tomorrow morning! When it comes to the Spanning-Tree Protocol, many people understand the basic concepts such as Root Bridge election, Root Ports and Designated Ports…and that’s it. But what happens when you have several VLANs, all of which have converged to the same Spanning-Tree topology? This can easily cause link congestion, packet latency and even dropped packets. Do you have the knowledge and skillset to adjust Spanning-Tree... Read More

Join me on April 16th for my next FREE live webinar - Load Balancing With PVST+ When it comes to the Spanning-Tree Protocol, many people understand the basic concepts such as Root Bridge election, Root Ports and Designated Ports…and that’s it. But what happens when you have several VLANs, all of which have converged to the same Spanning-Tree topology? This can easily cause link congestion, packet latency and even dropped packets. Do you have the knowledge and skillset to adjust Spanning-Tree... Read More

My Network Monitoring with SPAN & RSPAN webinar airs in one week! This webinar will introduce you to SPAN and RSPAN, two features that provide the ability to transparently monitor (by copying) select ingress traffic, while allowing the switch to continue to forward the original traffic as normal.  You can start by reading my blog post on the topic here. For those of you that would like to learn more and have some of your questions answered, you can register for my webinar next Tuesday, March... Read More

You can watch all 100+ Cisco training course by Keith on our All Access Pass site. Already watched Keith's courses? Be sure to check out some of his most popular blog posts such as OSPF Route Poising Techniques and Utilizing SPAN and RSPAN. You can also have all of your most pressing questions answered by Keith during our live SPAN &RSPAN Q&A webinar next week!  Read More

OSPF Route Poisoning Techniques When first learning about IGP Routing Protocols, much time is spent learning about how routers form neighborships (if they do at all) and how new routing updates are exchanged. Little, if any, time is spent describing the process by which routers inform each other of prefixes that have gone down, and the mechanics involved in doing so. This blog post seeks to rectify that situation with regards to the OSPFv2 Routing Protocol. Every standardized routing protocol... Read More