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\subsection[UDLD]{Unidirectional Link Detection}
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\subsection[UDLD]{Unidirectional Link Detection}
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\chapter{Management}
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\gls{udld} at work does the detection of the link is forwarding traffic in both directions. This is important when operating with Fiberoptic links\footnote{Normal Ethernet links is not as susceptible running traffic in only one direction}. Fiberoptic links has the potential for
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\begin{enumerate}
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\item bent and damages cables,
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\item damaged connectors,
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\item damaged ports,
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\item impurities between connector and port.
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\end{enumerate}
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\section{Network Mgmt}
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\fig{udld/malfunction}{udldmalfunction}{UDLD not working ?}
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Other things can go wrong, too. Such as
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\begin{itemize}
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\item hardware failures,
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\item software defects,
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\item abnormal interface converter \textit{behaviour},
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\item abnormal interface converter \textit{failure},
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\item cabling done wrong,
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\item inline sniffer/tap \textit{gone wrong},
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\item inline sniffer/tap \textit{misconfigured}
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\end{itemize}
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\chapter[Mgmt]{Management}
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\section[Network Mgmt]{Network Management}
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\subsection{Routers}
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\subsection{Routers}
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\subsection{Firewall}
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\subsection{Firewall}
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\section{OOB Mgmt}
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\section[OOB Mgmt]{Out-of-Band Management}
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\subsection{Console Server}
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\subsection{Console Server}
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img/udld/malfunction.png
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img/udld/malfunction.png
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