From bdf7dec8904d546ed441736bc00dc91a9dc94a40 Mon Sep 17 00:00:00 2001
From: chhan11 <zbcchhan11@zbc.dk>
Date: Thu, 29 Jun 2017 18:52:07 +0200
Subject: [PATCH] NEW: QoS early stage content

---
 acronyms.tex    |  3 +++
 chapter/qos.tex | 21 +++++++++++++--------
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/acronyms.tex b/acronyms.tex
index b893bee..9fcbc7d 100644
--- a/acronyms.tex
+++ b/acronyms.tex
@@ -15,6 +15,7 @@
 \newacronym{bpdu}{BPDU}{Bridge Protocol Data Unit}
 \newacronym{bsd}{BSD}{Berkeley Software Distribution}
 \newacronym{carp}{CARP}{Common Address Redundancy Protocol}
+\newacronym{cbwfq}{CBWFQ}{Class-based Weighted Fair Queueing}
 \newacronym{cdn}{CDN}{Cat Delivery Network}
 \newacronym{cdp}{CDP}{Cisco Discovery Protocol}
 \newacronym{cest}{CEST}{Central European Summer Time}
@@ -26,6 +27,7 @@
 \newacronym{cq}{CQ}{Custom Queueing}
 \newacronym{cst}{CST}{Common Spanning Tree}
 \newacronym{cwdm}{CWDM}{}
+\newacronym{dcbwfq}{DCBWFQ}{Distributed Class-based Weighted Fair Queueing}
 \newacronym{db}{DB}{Database}
 \newacronym{dhcp}{DHCP}{Dynamic Host Control Protocol}
 \newacronym{dknog}{DKNOG}{Danish Network Operators' Group}
@@ -34,6 +36,7 @@
 \newacronym{dsl}{DSL}{Digital Subscriber Line}
 \newacronym{dst}{dst}{destination}
 \newacronym{dwdm}{DWDM}{}
+\newacronym{dwfq}{DWFQ}{Distributed Weighted Fair Queueing}
 \newacronym{eapol}{EAPoL}{Extensible Authentication Protocol over Local Area Network}
 \newacronym{eap}{EAP}{Extensible Authentication Protocol}
 \newacronym{ecn}{ECN}{Explicit Congestion Notification}
diff --git a/chapter/qos.tex b/chapter/qos.tex
index 2ab7c0b..0a98c5a 100644
--- a/chapter/qos.tex
+++ b/chapter/qos.tex
@@ -19,11 +19,12 @@ Different mechanisms of handling access to network ressorces is used.
 
 \section{Concepts}
 
+\gls{qos}\tsq{s} goal is a differentiated prioritazion of packets parsing thorugh the network based upon the following concepts:
 \begin{enumerate}
     \item Bandwidth,
     \item latency,
-    \item jitter,
-    \item realiability.
+    \item jitter\footnote{Latency Variation}
+    \item realiability\footnote{Pct. of packets discarded by any a router}.
 \end{enumerate}
 
 \section[Congestion Mgmt]{Congestion Management}
@@ -31,16 +32,20 @@ Different mechanisms of handling access to network ressorces is used.
 There are different ways to do congestion management. Which is in it\tsq{s} essence sorting of packets when a link reaches full capacity usage in the outgoing direction.
 
 \begin{enumerate}
-    \item \gls{fifo}
-    \item \gls{pq}
-    \item \gls{cq}
-    \item \gls{wfq}
+    \item \gls{fifo}: Classic store-and-forward. Oftentimes the default algorithm.
+    \item \gls{pq}: Made to give stict priority to important traffic at each point \gls{pq} in the network where \gls{pq} is used.
+    \item \gls{cq}: 
+    \item \gls{wfq}: Traffic is diveded into flow based upon charactaristics \begin{mylist} \item \gls{dst} address, \item \gls{src} address, \item protocol, \item port number, \item socket. \end{mylist}. Flows is then allocated a part of the bandwidth relative to the number of ongoing conversations/flows.
     \begin{enumerate}
         \item Flow-based \gls{wfq},
-        \item class-based \gls{wfq},
-        \item distributed \gls{wfq}.
+        \item \gls{cbwfq},
+        \item \gls{dwfq}.
     \end{enumerate}
     \item distributed class-based \gls{wfq}
     \item \gls{ip} \gls{rtp} priority
     \item \gls{llq}
+    \begin{enumerate}
+        \item \gls{llq}
+        \item Distributed \gls{llq}: 
+    \end{enumerate}
 \end{enumerate}