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main.tex: Updates to chapter bout vtp
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main.tex
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main.tex
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% Declare Document Class
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\documentclass[a4paper,12pt,twoside]{book}
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\documentclass[a4paper,12pt,twoside,twocolumn]{book}
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\setlength{\columnsep}{2em}
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% Latex Packages
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\usepackage[T1]{fontenc}
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@ -13,6 +15,7 @@
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\usepackage[english]{babel}
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\usepackage{fancyhdr}
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\usepackage{wrapfig}
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\usepackage{array}
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% Define color
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\definecolor{codegreen}{rgb}{0,0.6,0}
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@ -46,21 +49,21 @@
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\graphicspath{{img/}{figures/}}
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% Custom commands
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% Usage: \pic[<pct-of-testwidt>]{<path-to-file>}
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\newcommand{\pic}[2][25]{
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% Usage: \pic[<pct-of-columnwidth>]{<path-to-file>}
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\newcommand{\pic}[2][50]{
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\begin{center}
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\transparent{0.4}
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\includegraphics[width=0.#1\textwidth]{#2}
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\includegraphics[width=0.#1\columnwidth]{#2}
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\end{center}
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}
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% Usage: \rfig{<path-to-file>}{<label>}
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\newcommand{\rfig}[2]{
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\begin{wrapfigure}{r}{0.60\textwidth}
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\begin{center}
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\includegraphics[width=0.58\textwidth]{#1}
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\end{center}
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\caption{#2}
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\end{wrapfigure}
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% Usage: \fig{<path-to-file>}{<label>}{<caption>}
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\newcommand{\fig}[3]{
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\begin{figure}[h]
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\centering
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\includegraphics[width=0.95\columnwidth]{#1}
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\caption{#3}
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\label{fig:#2}
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\end{figure}
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}
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% In which order to look after images in
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@ -71,7 +74,11 @@
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\DeclareGraphicsExtensions{.jpg,.png,.pdf}
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% Package Params
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\geometry{a4paper,margin=1in}
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\geometry{a4paper,margin=4em}
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%\setlength{\parindent}{4em}
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%\setlength{\parskip}{1em}
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%\renewcommand{\baselinestretch}{2.0}
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% Define fancy header and footer
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\pagestyle{fancy}
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@ -81,9 +88,13 @@
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\fancyfoot[CE,CO]{\leftmark}
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\fancyfoot[LE,RO]{\thepage}
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% width of header and footer rule is by default 0px.
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\renewcommand{\headrulewidth}{2pt}
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\renewcommand{\footrulewidth}{1pt}
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% Use the roman numeric system for pagenumbers
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\pagenumbering{roman}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% BEGIN DOCUMENT %
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@ -101,6 +112,11 @@
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\tableofcontents
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% Define length between paragrahps
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\setlength{\parskip}{1em}
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% Define lineheight
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\renewcommand{\baselinestretch}{1.15}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% BEGIN CHAPTER: Base Configuration %
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@ -160,11 +176,98 @@
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\subsection{Static}
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\subsection{BGP}
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\newpage
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\section{VLAN}
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\subsection{VTP}
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\rfig{vtp/implementing-vtp}{VTP}\cite{vtpchap4}
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\fig{vtp/implementing-vtp}{imp-vtp1}{VTP}
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\subsubsection{VTP Modes}
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The tree modes a VTP \textit{enabled} device can operate are
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\begin{itemize}
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\item Transparent
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\item Server
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\item Client
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\end{itemize}
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Of course you can \textit{disable} VTP altogether.
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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.
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The three VTP modes \textit{operates} as follow
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\begin{itemize}
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\item Transparent
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\begin{itemize}
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\item Creates, modifies and deletes \textit{local} vlans only
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\item Forwards advertisements
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\item Does \textit{not} synchronizes vlan configurations.
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\end{itemize}
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\item Server
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\begin{itemize}
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\item Creates, modifies and deletes vlans
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\item Sends and forwards advertisements
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\item Synchronizes vlan configurations
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\end{itemize}
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\begin{itemize}
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\item Cannot create, modify or delete vlans
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\item Send and forwards advertisements
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\item Synchronizes vlan configurations
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\end{itemize}
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\end{itemize}
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\subsubsection{VTP Announcement}
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VTP operates with announcements sent out in intervals. Summarized it amounts to
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\begin{itemize}
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\item 1 \textit{summary} announcement per 5th minute from the server
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\item The summary announcement informs clients of the current revision
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\item An announcement is sent out \textit{on the spot} when a change has been made on the VTP server
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\end{itemize}
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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.
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\subsubsection{Common Issues}
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\begin{itemize}
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\item Different/Incompatible VTP versions
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\item Wrong password
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\item Incorrect mode name
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\item No server set (all devices configured in transparent/client/vtp disabled mode)
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\end{itemize}
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\subsubsection{VTP Versions}
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\begin{itemize}
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\item Version 1
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\item Version 2
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\begin{itemize}
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\item Version-dependent transparent mode
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\item Consistencycheck
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\item Token ring support
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\item Unrecognized type-length-value support
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\end{itemize}
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\item Version 3 (not "yet" common)
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\begin{itemize}
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\item Extended VLAN support: Allow ranges are 1-1005,1018-2095. Not mentioned vlans ranges up to 4095 is still reserved.
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\item Domain name is not automatically learned.
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\item Better security.
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\item Better database propagation.
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\item MST now supported.
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\end{itemize}
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\end{itemize}
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\subsubsection{VTP Pruning}
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The art of only allowing the vlan traffic to flow on \textit{necessary} links.
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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.
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\fig{vtp/vtp-pruning}{vtpruning1}{VTP Pruning}
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\subsubsection{Security}
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It is \textbf{strongly} recommended to enable the security features supported in VTP.
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\textbf{Password:} MD5 hashing, Case-sensitive, Length between 8 and 64 chars.
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\subsubsection{Example configuration}
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\lstinputlisting{code/vtp/example.cfg}
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\newpage
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\section{Spanning Tree}
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\section{BGP}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% BEGIN LIST OF FIGURES %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\renewcommand{\listfigurename}{List of plots}
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\listoffigures
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% BEGIN LIST OF TABLES %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\renewcommand{\listtablename}{Tables}
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\listoftables
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% BEGIN REFERENCES %
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