Sean Wilkins

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.

Interested in learning more about Network Address Translation (NAT)? In this article, Sean Wilkins provides a tutorial on what NAT is all about.

In this article, Petri’s Cisco pro Sean Wilkins takes a look at the Spanning Tree Protocol port states — what happens during each port state and why they are needed for STP operation.

Where is the CCNA 2012 update? That’s the question a lot of CCNA candidates have on their mind. Many are in a limbo state where they’re not preparing for their CCNA because they’re awaiting the new exam. If this is you, then this article will help you understand Cisco’s certification revision process and how to prepare for the CCNA in 2012.

Learning the different aspects of networking can be a daunting task, but Cisco has developed a number of games to help. In this post, Sean Wilkins reviews the Cisco Aspire CCNA Edition, a game filled with tasks that encompass more than 80% of the material covered on the CCNA exam. This article covers how the game is structured and how you can use it to improve your networking skills.