From 47eeaf6fd05ddfe30ff54aed4f275bebbfaa3ebd Mon Sep 17 00:00:00 2001
From: chhan11 <zbcchhan11@zbc.dk>
Date: Wed, 31 May 2017 15:23:46 +0200
Subject: [PATCH] Finished up on spanning tree. Continueing with Inter Vlan
 routing

---
 chapter/layer3protocols.tex          |  7 ++++---
 chapter/section/intervlanrouting.tex |  1 +
 chapter/section/spanningtree.tex     | 12 ++++++------
 3 files changed, 11 insertions(+), 9 deletions(-)
 create mode 100644 chapter/section/intervlanrouting.tex

diff --git a/chapter/layer3protocols.tex b/chapter/layer3protocols.tex
index 3227f5d..71a2db9 100644
--- a/chapter/layer3protocols.tex
+++ b/chapter/layer3protocols.tex
@@ -1,6 +1,7 @@
+\chapter{Layer-2-to-Layer-3}
+
+\input{chapter/section/intervlanrouting}
+
 \chapter{Protocols Layer 3}
 
 \input{chapter/section/routednetwork}
-
-\newpage
-
diff --git a/chapter/section/intervlanrouting.tex b/chapter/section/intervlanrouting.tex
new file mode 100644
index 0000000..7eed6ba
--- /dev/null
+++ b/chapter/section/intervlanrouting.tex
@@ -0,0 +1 @@
+\section{Vlan-to-vlan routing}
\ No newline at end of file
diff --git a/chapter/section/spanningtree.tex b/chapter/section/spanningtree.tex
index 87e0c26..7746964 100644
--- a/chapter/section/spanningtree.tex
+++ b/chapter/section/spanningtree.tex
@@ -396,9 +396,9 @@ It is the network admins job to propagate an even configuration to all switches
 \subsection{Common Troubleshooting}
 
 \begin{itemize}
-    \item Wrong duplex settings: Mismatch half/full duplex.
-    \item Failure on uni-directional links
-    \item Frame corruption
-    \item Resource errors
-    \item Wrong/Error with PortFast configuration
-\end{itemize}
\ No newline at end of file
+    \item Duplex mismatch: Mismatch half/full duplex.
+    \item Unidirectional link failure
+    \item Frame corruption: Physical interfaces can be defective/with errors.
+    \item Resource errors: High compute usage in the Control Plane. {\scriptsize Remember the Spanning Tree Process in fx. Cisco Catalyst switches is handled in software.}
+    \item PortFast configuration error: Can lead to bridging loops when mis-wiring happens together with logical port configuration errors.
+\end{itemize}