From de166a04064c1c41392ee663ea5db50385b00929 Mon Sep 17 00:00:00 2001
From: hadeshyp <hadeshyp>
Date: Thu, 31 Mar 2011 09:03:11 +0000
Subject: [PATCH] *** empty log message ***

---
 daqcontrol.tex |  2 ++
 generaldaq.tex | 18 +++++++++++++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/daqcontrol.tex b/daqcontrol.tex
index 6746e64..71097fe 100644
--- a/daqcontrol.tex
+++ b/daqcontrol.tex
@@ -60,3 +60,5 @@ All main scripts to control DAQ are available on the desktop of all DAQ computer
  \item[StartEbStart](Re-)Starts the eventbuilders in default configuration, writing files with prefix st.
 
 \end{description}
+
+
diff --git a/generaldaq.tex b/generaldaq.tex
index 6ce00ef..36e6369 100644
--- a/generaldaq.tex
+++ b/generaldaq.tex
@@ -42,4 +42,20 @@ solutions for your DAQ problems. Please follow the procedure below accurately.
   name prefix.
 
 \paragraph*{7: Trigger Rates} Check the trigger rates, compare the current readings with the usual ones seen during
- the shift.
\ No newline at end of file
+ the shift.
+
+\subsection{10 Gbit Ethernet Switch Died}
+It happened several times that the main 10 Gbe switch died. This means that all Eventbuilder are not reachable any more
+neither from the internal network nor from the main GSI network.
+
+The following actions should only be done by an expert or with support from an expert by phone!
+
+\begin{itemize}
+ \item Check that the switch is the real cause of the problem.
+ \item Unplug all 10 connections (copper wires). Keep them in order, they have to be plugged back to the same plug!
+ \item Unplug optical up-link
+ \item Wait 10 seconds
+ \item Re-plug all 10 connections
+ \item Re-plug up-link
+\end{itemize}
+
-- 
2.43.0