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Bit of HSRP

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chhan11 2017-06-09 21:55:42 +02:00
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chapter/mgmt.tex
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@ -500,4 +500,49 @@ Go all the way and do consider if Supervisor Redundancy is a necessary requireme
\subsection[VRRP]{Virtual Router Redundancy Protocol}
\subsection[HSRP]{Hot-Standby Routing Protocol}
\subsection[GLBP]{Gateway Load Balancing Protocol}
\begin{itemize}
\item \itemhead[]{Defaults}
\begin{itemize}
\item Priority 100\footnote{Higher is better. Range is 0x00--0xFF}
\item Hello time 3s
\item Dead time 10s
\item Multicast grp 224.0.0.2 port udp 1985 \textit{(all routers)} {\scriptsize \textbf{v1}}
\item Multicast grp 224.0.0.102 port udp 1985 {\scriptsize \textbf{v2}}
\item \gls{hsrp} group mac 00-00-0c-07-ac-xx\footnote{The last 2 octets is the group ID in hex. E.g. 11 is 0x0b, 30 is 0x1e.}
\end{itemize}
\item \itemhead[]{States}
\begin{enumerate}
\item \textbf{Initial} \gls{hsrp} is not running yet
\item \textbf{Listen}
\begin{itemize}
\item Learned the Virtual \gls{ip},
\item neither active or standby yet,
\item listens for hellos.
\end{itemize}
\item \textbf{Speak}
\begin{itemize}
\item Sends hello msg\tsq{s},
\item participates in active/standby election,
\item requires Virtual \gls{ip} to enter speak state.
\end{itemize}
\item \textbf{Standby}
\begin{itemize}
\item Candidate for active router role,
\item still sending hello from time-to-time.
\end{itemize}
\item \textbf{Active}
\begin{itemize}
\item The forwarding router for the grp Virtual \gls{mac},
\item still sending hellos.
\end{itemize}
\end{enumerate}
\end{itemize}
Remember use of \textbf{pre-emption} when configuring the \gls{hsrp} routers with all \textit{but} the lowest priority.
\subsubsection[Blncd]{Load Sharing}
When configuring
\subsection[GLBP]{Gateway Load Balancing Protocol}