\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{hoemac16}
\pdfinfo{
  /Title (single-area-ospf.pdf)
  /Creator (Cheatography)
  /Author (hoemac16)
  /Subject (Single Area OSPF Cheat Sheet)
}

% Lengths and widths
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\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Single Area OSPF Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{hoemac16} via \textcolor{DarkBackground}{\uline{cheatography.com/98690/cs/21728/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}hoemac16 \\
  \uline{cheatography.com/hoemac16} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 4th February, 2020.\\
   Updated 4th February, 2020.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{x{3.76 cm} x{4.24 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Basic Configuration Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
Router(config)\# no ip domain-lookup & disables dns lookup \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Router(config)\# hostname R1 & changes hostname \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
R1(config)\# enable secret class & sets password for privileged EXEC \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
R1(config)\# line console 0 & changes to line configuration mode \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
R1(config-line)\# logging synchronous & configures logging synchronous (no messages interrupt input) \tn 
% Row Count 11 (+ 3)
% Row 5
\SetRowColor{white}
R1(config-line)\# password cisco & sets console password (also for vty) \tn 
% Row Count 13 (+ 2)
% Row 6
\SetRowColor{LightBackground}
R1(config-line)\# login & enables login (also for vty) \tn 
% Row Count 15 (+ 2)
% Row 7
\SetRowColor{white}
R1\# copy run start & copies the \seqsplit{running-configuration} to the startup-configration \tn 
% Row Count 18 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{These commands are to be executed for all Routers!}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.44 cm} x{4.56 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Show Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
Router\# show ip route & displays ip routing table \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Router\# show ip protocols & shows a summary of configured routing protocol information \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
Router\# show ip ospf & displays general information of OSPF \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
Router\# show ip ospf interface & displays OSPF information for the interfaces on the router \tn 
% Row Count 10 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{These commands can be used to verify and troubleshoot your configuration.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Topology}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{8.4cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/hoemac16_1580819397_topology.PNG}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Topology for 8.2.4.5 and 10.2.3.3 (Troubleshooting)}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.24 cm} x{3.76 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Router1 Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
R1(config)\# router ospf 1 & enables OSPF (process id = 1) \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
R1(config-router)\# network 192.168.1.0 0.0.0.255 area 0 & configures a network \tn 
% Row Count 5 (+ 3)
% Row 2
\SetRowColor{LightBackground}
R1(config)\# interface lo0 & configures a loopback interface \tn 
% Row Count 7 (+ 2)
% Row 3
\SetRowColor{white}
R1(config-if)\# ip address 1.1.1.1 255.255.255.255 & sets the ip address of an interface \tn 
% Row Count 10 (+ 3)
% Row 4
\SetRowColor{LightBackground}
R1(config-router)\# router-id 11.11.11.11 & sets the router id (ospf) \tn 
% Row Count 12 (+ 2)
% Row 5
\SetRowColor{white}
R1(config-router)\# auto-cost reference-bandwidth 10000 & changes default reference bandwith \tn 
% Row Count 15 (+ 3)
% Row 6
\SetRowColor{LightBackground}
R1(config-if)\# bandwidth 128 & sets bandwidth of an interface \tn 
% Row Count 17 (+ 2)
% Row 7
\SetRowColor{white}
R1(config-if)\# ip ospf cost 1565 & manually sets cost of a link \tn 
% Row Count 19 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4 cm} x{4 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Router2 Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
R2(config-router)\# no passive-interface s0/0/0 & removes passive status. router will receive OSPF routing updates. \tn 
% Row Count 4 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Except the command(s) above, Router 2 mainly used the same commands as Router 1.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{4.32 cm} x{3.68 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Router3 Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
Router3\#clear ip ospf process & Clears all ospf processes \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{8.4cm}}{Except the command(s) above, Router 3 mainly used the same commands as Router 1.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Topology}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{8.4cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/hoemac16_1580819493_topology2.PNG}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{Topology for 10.1.1.13}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}