In the early days of Networking, a computer network was meant to carry only data traffic. As time went on, VOIP, or Voice-Over-IP technologies were invented, computer networks had to be designed to also carry… Read More »Converged Network
The Native VLAN is an often confused concept, though it needn’t be. This video will explain what the Native VLAN is and how it affects traffic on a wire. Summary An Access port (or “untagged… Read More »What is the Native VLAN?
Lately I’ve been working on a Subnetting Mastery video series. The goal is take someone with little to no exposure to subnetting and make them a subnetting pro. I’m happy to announce that the video… Read More »Subnetting Mastery
This article provides all the information you need to understand and configure NAT on Cisco ASA, Cisco ASA-X , and Cisco Firepower Firewalls. There are four possible methods of address translation, and each were defined… Read More »Cisco Firepower & Cisco ASA – NAT Configuration Guide
In this article, we will illustrate the Cisco NAT configuration on IOS Routers. This is a follow up article to the Network Address Translation article series which thoroughly covered the operation of NAT and answers the questions… Read More »Cisco NAT Configuration – IOS Router
When connecting two sites together using a Virtual Private Network (VPN), a common issue that is encountered is trying to build a VPN with overlapping networks — where both sites happen to use the same… Read More »VPN with Overlapping Networks
Cisco has created some NAT terminology which explicitly refer to the IP addresses and/or ports involved in Network Address Translation (NAT). While discussing the addresses involved in a NAT, using the terms like “Source” and… Read More »Cisco NAT Terminology
BGP is the predominant dynamic routing protocol used to exchange routes between different autonomous systems. BGP’s popularity lies in the Path Selection process which allows extremely granular control of the path for incoming and outgoing… Read More »BGP Oldest Path