Merge branch 'section/intervlanrouting' into develop

chapter/layer3protocols.tex

@@ -2,6 +2,10 @@
 
 \input{chapter/section/intervlanrouting}
 
+\chapter{DHCP}
+
+\input{chapter/section/dhcp}
+
 \chapter{Protocols Layer 3}
 
 \input{chapter/section/routednetwork}

chapter/section/dhcp.tex

@@ -0,0 +1,42 @@
+\section{DHCP Process}
+
+\fig{dhcp/dhcpdiscoverprocess}{dhcpdiscoverprocess}{DHCP Discover Process}
+
+\subsection{DHCP Messages}
+
+\begin{itemize}
+    \item \textbf{DHCPDECLINE:} Message sent from the client to the server that the address is already in use.
+    \item \textbf{DHCPNAK:} The server sends a refusal to the client for request for configuration.
+    \item \textbf{DHCPRELEASE:} Client tells a server that it is giving up a lease.
+    \item \textbf{DHCPINFORM:} A client already has an IP address but is requesting other configuration parameters that the DHCP server is configured to deliver such as DNS address.
+\end{itemize}
+
+\section{DHCP Options}
+
+\begin{itemize}
+    \item \textbf{43} Vendor-encapsulated option that enables vendors to have their own list of options on the server.
+    \item \textbf{69} SMTP server, if you want to specify available SMTP servers to the client.
+    \item \textbf{70} POP3 server, if you want to specify available POP3 servers to the client.
+    \item \textbf{150} TFTP server that enables your phones to access a list of TFTP servers.
+\end{itemize}
+
+\section{DHCP Example Configuration}
+
+\subsection{Cisco}
+
+\begin{txt}
+ip dhcp excluded-address 192.168.0.254
+!
+ip dhcp pool LAN-1-POOL-DHCP
+ network 192.168.0.0 255.255.255.0
+ default-router 192.168.0.254
+ lease 2 ! set in days
+\end{txt}
+
+When configuring a Layer 3 interface as a relay port for DHCP request for a subnet. Set the ip helper command on the interface with one \textit{or} more ip addresses.
+
+\begin{txt}
+interface GigabitEthernet 0/3
+ ip helper-address 192.168.220.220
+ ip helper-address 192.168.222.222
+\end{txt}

chapter/section/intervlanrouting.tex

@@ -1 +1,93 @@
-\section{Vlan-to-vlan routing}
+\section{Vlan-to-vlan routing}
+
+\myquote{}{Guidance and Understanding of the art of Layer 3 networks. Routing between different slash 24\tsq{s}.\\ \textit{Aka. Inter-vlan routing.}}
+
+There are different ways to go \tsq{bout} Inter-vlan routing and doing it.
+
+\begin{itemize}
+    \item \textbf{Some are using:}
+    \begin{enumerate}
+        \item external router,
+        \item switch virtual interfaces\footnote{\texttt{Switches interface -> Vlan interfaces}},
+        \item routed ports\footnote{\texttt{Routed interface -> Subinterfaces}},
+        \item bridge virtual interface\footnote{\texttt{L3 bridging interface}}
+    \end{enumerate}
+    \item \textbf{Ways to do it:}
+    \begin{enumerate}
+        \item router-on-a-stick if the network is running collapsed core or not have a distribution switch in the middle.
+        \item (...)
+    \end{enumerate}
+\end{itemize}
+
+\pagebreak
+
+\subsection{Interface configs}
+
+\subsubsection{Routed interfaces}
+
+\begin{txt}
+interface GigabitEthernet 0/1.10
+ encapsulation dot1q 10
+ ip address 192.168.0.1 255.255.255.128
+!
+interface GigabitEthernet 0/1.20
+ encapsulation dot1q 20
+ ip address 192.168.0.129 255.255.255.128
+\end{txt}
+
+\subsubsection{Switches interfaces}
+
+\begin{txt}
+Vlan10
+ name VLAN10
+Vlan20
+ name VLAN20
+!
+interface Vlan10
+ ip address 192.168.1.1 255.255.255.128
+interface Vlan20
+ ip address 192.168.1.129 255.255.255.128
+!
+interface GigabitEthernet 0/2
+ switchport mode trunk
+ switchport trunk encapsulation dot1q
+ switchport trunk allowed vlan 10,20
+\end{txt}
+
+\pagebreak
+
+\fig{network/routeronastick}{routeronastick}{\bsq{Router on a Stick} concept.}
+
+\pagebreak
+
+\subsection{? Troubleshooting ?}
+
+\begin{enumerate}
+    \item \textbf{Missing VLAN:}
+    \begin{itemize}
+        \item VLAN might not be defined across all the switches.
+        \item VLAN might not be enabled on the trunk ports.
+        \item Ports might not be in the right VLANs.
+    \end{itemize}
+    \item \textbf{Layer 3 interface misconfiguration:}
+    \begin{itemize}
+        \item Virtual interface might have the wrong IP address or subnet mask.
+        \item Virtual interface might not be up.
+        \item Virtual interface number might not match with the VLAN number.
+        \item Routing has to be enabled to route frames between VLAN.
+        \item Routing might not be enabled.
+    \end{itemize}
+    \item \textbf{Routing protocol misconfiguration:}
+    \begin{itemize}
+        \item Eyery interface or network needs to be added in the routing protocol.
+        \item The new interface might not be added to the routing protocol.
+        \item Routing protocol configuration is needed only if VLAN subnets need to communicate to the other routers, as previously
+        mentioned in this chapter.
+    \end{itemize}
+    \item \textbf{Host misconfiguration:}
+    \begin{itemize}
+        \item Host might not have the right IP address or subnet mask.
+        \item Each host has to have the default gateway that is the SVI or Layer 3 interface to communicate with other networks and VLAN.
+        \item Host might not be configured with the default gateway.
+    \end{itemize}
+\end{enumerate}

commands.tex

@@ -50,6 +50,16 @@
     {\footnotesize #2}}
 
 
+\newcommand{\myquote}[2]{%
+    \sbox0{#1}%
+    \ifdim\wd0=0pt
+        {\epigraph{#2}{\textit{{\tiny \theauthor}}}} %if #1 is empty
+    \else
+        {\epigraph{#2}{\textit{#1}}} %if quote is cited
+    \fi    
+}
+
+
 % Enviroment @var txt
 % changes code styling to: in frame, white bg.
 \lstnewenvironment{txt}{\lstset{style=plaintxt}}{}

structure.tex

@@ -37,6 +37,8 @@
 \usepackage{inconsolata} 
 \usepackage{blindtext}
 \usepackage{expdlist} 
+\usepackage{epigraph} % used to style quotes
+\usepackage{titling} % makes available \thetitle \theauthor \thedate
 
 
 \bibliographystyle{unsrtnat} %styles list https://www.sharelatex.com/learn/Natbib_bibliography_styles
@@ -101,8 +103,8 @@
     showstringspaces=false,
     showtabs=false,
     tabsize=4,
-    abovecaptionskip=5em,
+    abovecaptionskip=3em,
-    aboveskip=3em,
+    aboveskip=1em,
     belowcaptionskip=5em,
     belowskip=3em,
     upquote=true,
@@ -206,4 +208,8 @@
 \renewcommand\theadalign{cb}
 \renewcommand\theadfont{\bfseries}
 \renewcommand\theadgape{\Gape[4pt]}
-\renewcommand\cellgape{\Gape[4pt]}
+\renewcommand\cellgape{\Gape[4pt]}
+
+\def\tsq#1{\textquotesingle{#1}}
+\def\bsq#1{%both single quotes
+    \lq{#1}\rq}