From 3cf1872d60407962ed8617067058d6abcdcf1211 Mon Sep 17 00:00:00 2001 From: chhan11 Date: Tue, 6 Jun 2017 13:09:28 +0200 Subject: [PATCH] Added DORA sentence to dhcp notes --- chapter/dhcp.tex | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/chapter/dhcp.tex b/chapter/dhcp.tex index 5741923..0f6b2c3 100644 --- a/chapter/dhcp.tex +++ b/chapter/dhcp.tex @@ -2,6 +2,14 @@ \section[DHCP Process]{Dynamic Host Control Protocol Process} +You can always remember the \gls{dhcp} handshake process by DORA\footnote{Discover, Offer, Request, Acknowledgement}: +\begin{enumerate} + \item DHCP\textbf{D}ISCOVER: Client request to get a lease. + \item DHCP\textbf{O}FFER: Server sends an offer to the client containing a \gls{ip}, domain name, and lease period. + \item DHCP\textbf{R}EQUEST: Client formally request to get the assignment from the server. + \item DHCP\textbf{A}CK: Server acknowledges the assignment to the client. +\end{enumerate} + \fig{dhcp/dhcpdiscoverprocess}{dhcpdiscoverprocess}{DHCP Discover Process} \subsection[DHCP Messages]{Dynamic Host Control Protocol Messages} @@ -26,19 +34,19 @@ \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} +\begin{cisco} +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{cisco} 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} +\begin{cisco} +interface GigabitEthernet 0/3 + ip helper-address 192.168.220.220 + ip helper-address 192.168.222.222 +\end{cisco}