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More bgp updates

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chhan11 2017-06-18 21:06:08 +02:00
parent 8e50a4c628
commit a4400723f0
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chapter/layer3.tex
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@ -22,16 +22,25 @@ The protocol of the internet used since 1994.\cite{wiki:Border_Gateway_Protocol}
\end{itemize}
\item \itemhead{Route exchange}
\begin{itemize}
\item Routes can be aggregated between \Glspl{as} by use of route-maps mechanism.
\item \itemhead{Route-maps mechanism}
\begin{itemize}
\item Routes can be aggregated between \Glspl{as}.
\item Properties can be changed on the fly by mathing
\begin{enumerate*}[label={\alph*)}]
\item \Gls{bgp} communities,
\item \Gls{ip} prefix,
\item \Gls{bgp} as-path,
\end{enumerate*}
\end{itemize}
\item
\end{itemize}
\item \itemhead{States}
\begin{enumerate}
\item Idle: \Gls{bgp} while initializing refuses all incoming connections. Will initiate \Gls{tcp} connection to peer.
\item Connect: Waits for \Gls{tcp} connection. If \Gls{tcp} is established goes to state OpenSent. If \Gls{tcp} is \textit{un}successful ConnectRetry timer is started and then goes to Active state.
\item Active
\item OpenSent
\item OpenConfirm
\item Established
\item Active: When ConnectRetry counter reaches 0 goes to state Connect.
\item OpenSent: Sends \gls{msg} to remote node. Waits for reply \gls{msg} before going to OpenConfirm.
\item OpenConfirm: Nodes exchange keepalive \glspl{msg} and goes to Established state if successful.
\item Established: Nodes can now exchange KeepAlive, Updates, and Notification \glspl{msg}.
\end{enumerate}
\end{itemize}
\end{itemize}