diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..966073a
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2017, Netravnen
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/code/vtp/example.cfg b/code/vtp/example.cfg
new file mode 100644
index 0000000..8c5a371
--- /dev/null
+++ b/code/vtp/example.cfg
@@ -0,0 +1 @@
+# Code goes here
diff --git a/img/vtp/implementing-vtp.jpg b/img/vtp/implementing-vtp.jpg
new file mode 100644
index 0000000..c703f5c
Binary files /dev/null and b/img/vtp/implementing-vtp.jpg differ
diff --git a/img/vtp/vtp-pruning.png b/img/vtp/vtp-pruning.png
new file mode 100644
index 0000000..033eeb1
Binary files /dev/null and b/img/vtp/vtp-pruning.png differ
diff --git a/latexmkrc b/latexmkrc
new file mode 100644
index 0000000..9a342c1
--- /dev/null
+++ b/latexmkrc
@@ -0,0 +1 @@
+$ENV{'TZ'}='Europe/Berlin';
\ No newline at end of file
diff --git a/main.tex b/main.tex
index 0f21a13..5e4fa86 100644
--- a/main.tex
+++ b/main.tex
@@ -1,5 +1,7 @@
 % Declare Document Class
-\documentclass[a4paper,12pt,twoside]{book}
+\documentclass[a4paper,12pt,twoside,twocolumn]{book}
+
+\setlength{\columnsep}{2em}
 
 % Latex Packages
 \usepackage[T1]{fontenc}
@@ -12,6 +14,11 @@
 \usepackage{float}
 \usepackage[english]{babel}
 \usepackage{fancyhdr}
+\usepackage{wrapfig}
+\usepackage{array}
+\usepackage{lipsum}
+\usepackage{fancybox}
+\usepackage{varwidth}
 
 % Define color
 \definecolor{codegreen}{rgb}{0,0.6,0}
@@ -42,24 +49,33 @@
 
 % Path where images are located relative
 % to the file main.tex
-\graphicspath{{img/}}
+\graphicspath{{img/}{figures/}}
 
 % Custom commands
-% Usage: \pic{ [<pct-of-testwidt>] }{ <path-to-file> }
-\newcommand{\pic}[2][25]{
-    \begin{center}
-        \transparent{0.4}
-        \includegraphics[width=0.#1\textwidth]{#2}
-    \end{center}
+% Usage: \pic[<pct-of-columnwidth>]{<path-to-file>}
+\newcommand{\pic}[2][50]{
+\begin{center}
+    \transparent{0.4}
+    \includegraphics[width=0.#1\columnwidth]{#2}
+\end{center}
 }
-% Usage: \fig{ [<caption>] }{ <label> }{ <path-to-file> }
-\newcommand{\fig}[3][]{
-    \begin{figure}[h]
-        \centering
-        \includegraphics[width=0.25\textwidth]{#3}
-        \caption{#1}
-        \label{fig:#2}
-    \end{figure}
+% Usage: \fig{<path-to-file>}{<label>}{<caption>}
+\newcommand{\fig}[3]{
+\begin{figure}[h]
+    \centering
+    \includegraphics[width=0.95\columnwidth]{#1}
+    \caption{#3}
+    \label{fig:#2}
+\end{figure}
+}
+
+\newcommand{\notice}[2]{%
+    \shadowbox{%
+        \begin{varwidth}{\linewidth}
+            \texttt{\textbf{#1}}\\
+            #2
+        \end{varwidth}
+    }
 }
 
 % In which order to look after images in
@@ -70,7 +86,11 @@
 \DeclareGraphicsExtensions{.jpg,.png,.pdf}
 
 % Package Params
-\geometry{a4paper,margin=1in}
+\geometry{a4paper,margin=4em}
+
+%\setlength{\parindent}{4em}
+%\setlength{\parskip}{1em}
+%\renewcommand{\baselinestretch}{2.0}
 
 % Define fancy header and footer
 \pagestyle{fancy}
@@ -80,9 +100,13 @@
 \fancyfoot[CE,CO]{\leftmark}
 \fancyfoot[LE,RO]{\thepage}
 
+% width of header and footer rule is by default 0px.
 \renewcommand{\headrulewidth}{2pt}
 \renewcommand{\footrulewidth}{1pt}
 
+% Use the roman numeric system for pagenumbers
+\pagenumbering{roman}
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %                                                    %
 % BEGIN DOCUMENT                                     %
@@ -100,6 +124,11 @@
 
 \tableofcontents
 
+% Define length between paragrahps
+\setlength{\parskip}{1em}
+% Define lineheight
+\renewcommand{\baselinestretch}{1.15}
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %                                                    %
 % BEGIN CHAPTER: Base Configuration                  %
@@ -159,10 +188,106 @@
 \subsection{Static}
 \subsection{BGP}
 
+\newpage
+
 \section{VLAN}
 
-%\subsection{BPDU}
-%\subsection{}
+\subsection{VTP}
+\fig{vtp/implementing-vtp}{imp-vtp1}{VTP}
+
+\subsubsection{VTP Modes}
+The tree modes a VTP \textit{enabled} device can operate are
+\begin{itemize}
+    \item Transparent
+    \item Server
+    \item Client
+\end{itemize}
+Of course you can \textit{disable} VTP altogether.
+
+Key things to be aware of \textit{before} enabling VTP in your environment is to make double sure of only having 1 VTP domain. \textbf{If} 2 or more VTP domains exists. Be triple sure to separate them! As to avoid having an VTP server DB overridden with data from another VTP domain.
+
+The three VTP modes \textit{operates} as follow
+\begin{itemize}
+    \item Transparent
+    \begin{itemize}
+        \item Creates, modifies and deletes \textit{local} vlans only
+        \item Forwards advertisements
+        \item Does \textit{not} synchronizes vlan configurations.
+    \end{itemize}
+    \item Server
+    \begin{itemize}
+        \item Creates, modifies and deletes vlans
+        \item Sends and forwards advertisements
+        \item Synchronizes vlan configurations
+    \end{itemize}
+    \begin{itemize}
+        \item Cannot create, modify or delete vlans
+        \item Send and forwards advertisements
+        \item Synchronizes vlan configurations
+    \end{itemize}
+\end{itemize}
+
+\subsubsection{VTP Announcement}
+VTP operates with announcements sent out in intervals. Summarized it amounts to
+\begin{itemize}
+    \item 1 \textit{summary} announcement per 5th minute from the server
+    \item The summary announcement informs clients of the current revision
+    \item An announcement is sent out \textit{on the spot} when a change has been made on the VTP server
+\end{itemize}
+
+Do remember it is \textbf{only} the VTP server which has the vlan configuration stored \textbf{on disk}. All device clients and transparent nodes do only store the vlans delegated by VTP in memory.
+
+\subsubsection{Common Issues}
+\begin{itemize}
+    \item Different/Incompatible VTP versions
+    \item Wrong password
+    \item Incorrect mode name
+    \item No server set (all devices configured in transparent/client/vtp disabled mode)
+\end{itemize}
+
+\subsubsection{VTP Versions}
+\begin{itemize}
+    \item Version 1
+    \item Version 2
+    \begin{itemize}
+        \item Version-dependent	transparent	mode
+        \item Consistencycheck
+        \item Token ring support
+        \item Unrecognized type-length-value support
+    \end{itemize}
+    \item Version 3 (not "yet" common)
+    \begin{itemize}
+        \item Extended VLAN support: Allow ranges are 1-1005,1018-2095. Not mentioned vlans ranges up to 4095 is still reserved.
+        \item Domain name is not automatically learned.
+        \item Better security.
+        \item Better database propagation.
+        \item MST now supported.
+    \end{itemize}
+\end{itemize}
+
+\subsubsection{VTP Pruning}
+The art of only allowing the vlan traffic to flow on \textit{necessary} links.
+
+This means if there are no clients in a vlan on a device. Then no traffic for the inactive vlans is send down-/upstream on the link in question.
+\fig{vtp/vtp-pruning}{vtpruning1}{VTP Pruning}
+
+\subsubsection{Security}
+It is \textbf{strongly} recommended to enable the security features supported in VTP.
+
+\textbf{Password:} MD5 hashing, Case-sensitive, Length between 8 and 64 chars.
+
+\notice{VTP Scaling}{
+As the network grows and grows and grows and grows some more over long/short timespans.
+You will \textbf{for certain} come to cross-rode, where you \textbf{must} consider to
+go away from using VTP in the network. The problems of managing an elderly network and
+wiping and re-introducing nodes in the network. You \textbf{will} face the issue of a
+wiped vlan database from the VTP domain.
+}
+
+\subsubsection{Example configuration}
+\lstinputlisting{code/vtp/example.cfg}
+    
+\newpage
 
 \section{Spanning Tree}
 
@@ -170,7 +295,6 @@
 \subsection{PVST}
 \subsection{RPVST+}
 \subsection{MTP}
-\subsection{VTP}
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -183,6 +307,33 @@
 
 \section{BGP}
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                                                    %
+% BEGIN LIST OF FIGURES                              %
+%                                                    %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\renewcommand{\listfigurename}{List of plots}
+\listoffigures
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                                                    %
+% BEGIN LIST OF TABLES                               %
+%                                                    %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\renewcommand{\listtablename}{Tables}
+\listoftables
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%                                                    %
+% BEGIN REFERENCES                                   %
+%                                                    %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\bibliographystyle{unsrt}
+\bibliography{unsrt}
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %                                                    %
 % END DOCUMENT                                       %
diff --git a/unsrt.bib b/unsrt.bib
new file mode 100644
index 0000000..7291831
--- /dev/null
+++ b/unsrt.bib
@@ -0,0 +1,19 @@
+@online{vtpchap4,
+    ALTauthor = {Hector Camba Lainez},
+    ALTeditor = {editor},
+    title = {Cap4 implementing vtp},
+    date = {Jun 25, 2010},
+    url = {https://www.slideshare.net/lucky0679/cap4-implementing-vtp},
+    OPTsubtitle = {subtitle},
+    OPTtitleaddon = {titleaddon},
+    OPTlanguage = {language},
+    OPTversion = {version},
+    OPTnote = {note},
+    OPTorganization = {organization},
+    OPTdate = {22},
+    OPTmonth = {05},
+    OPTyear = {2017},
+    OPTaddendum = {addendum},
+    OPTpubstate = {pubstate},
+    OPTurldate = {2017-05-22},
+}