Sean Wilkins

Learn about basic Cisco Express Forwarding (CEF) concepts, including the Forwarding Information Base (FIB), the Adjacency Table, dCEF, and more.

Troubled by tracert? Puzzled by ping? Learn about the most commonly used Windows troubleshooting tools.

Learning Cisco IOS? Check out our list of the top Cisco IOS configuration mistakes and avoid these common errors.

We’re taking a look at traceroute! Learn how sysadmins use ping and traceroute (aka tracert) to configure and troubleshoot networks.

The netstat command can be a very useful tool for the sysadmin. Learn more about how to use the netstat command to monitor your network traffic and more.

Knowledge is power! Learn how to configure a static IPv4 address using Windows 7 in this useful step-by-step tutorial.

Understanding Border Gateway Protocol (BGP) can be a beastly task. Sean Wilkins lays down some basic concepts in this introduction to BGP.

Do you know what a root bridge is? Sean Wilkins shares some Spanning Tree Protocol (STP) path selection know-how.

Does your Cisco VTP configuration need an SOS? Sean Wilkins tackles Cisco VLAN Trunking Protocol (VTP) troubleshooting issues.

Ladies and gentlemen, it’s time to talk IPv6. Sean Wilkins discusses what’s new in Windows Server 2012 and Windows 8 in terms of IPv6 support.

IP Security got you down? Sean Wilkins walks you through the basic steps of configuring IPSec direct encapsulation on Cisco devices.

An overview of the Session Initiation Protocol (SIP) call signaling protocol.