Fun With Distance-Vector Routing & Frame-Relay

Introduction   It is important to understand how our different IGP’s work when running over frame-relay. In particular, it is important to understand how things work when dealing with frame-relay … Continue Reading →

Understanding Spanning-Tree Port-Priority

Introduction Today we are going to take a quick look at the spanning-tree port-priority and understand how it really works with regards to influencing what ports are blocking and which … Continue Reading →

Going Deep With DHCP Snooping

  Introduction DHCP snooping is a layer 2 security feature we can configure on our Catalyst switches that helps mitigate a number of different DHCP based network attacks. The basic … Continue Reading →

Advanced Port-Security

Port-Security is one of those features that goes with you through your career as a Cisco network engineer from CCENT all the way up through the CCIE. Of course, at … Continue Reading →

VTP Theory & Configurations

I just added a couple of new videos on my youtube channel covering VTP theory and configuration.  You can check them out there, or below. Enjoy