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reformat eigrp section
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@ -54,27 +54,40 @@ Always remember the following points for Cisco devices:\cite{wiki:Administrative
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\section{EIGRP}
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\gls{eigrp} is Cisco's enhanced edition if \gls{igrp}. Dating back to 1993 and a leg for Cisco over other vendors back in the early days of the Internet. (.. hmm. And remember Cisco's implementation of \gls{ospf} was known to be unstable until the early 2000's.)
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\gls{eigrp} is Cisco's enhanced edition if \gls{igrp}. Dating back to 1993 and a
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leg for Cisco over other vendors back in the early days of the Internet. (..
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hmm. And remember Cisco's implementation of \gls{ospf} was known to be unstable
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until the early 2000's.)
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The change to \gls{eigrp} from \gls{igrp} was due to the support of classless routing. (\gls{igrp} only supported classful routing of class A (/8), B (/16), and C (/24) networks.)
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The change to \gls{eigrp} from \gls{igrp} was due to the support of classless
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routing. (\gls{igrp} only supported classful routing of class A (/8), B (/16),
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and C (/24) networks.)
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Cisco converted \gls{eigrp} to an open standard back in 2013 with \rfc{7868}.\cite{wiki:Enhanced_Interior_Gateway_Routing_Protocol}
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Cisco converted \gls{eigrp} to an open standard back in 2013 with
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\rfc{7868}.\cite{wiki:Enhanced_Interior_Gateway_Routing_Protocol}
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\gls{eigrp} adds support for \gls{vlsm} and the \gls{dual} with improved routing capabilities in comparison to \gls{igrp}. Overall \gls{eigrp} provides better capabilities compared to it's predecessor.
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\gls{eigrp} adds support for \gls{vlsm} and the \gls{dual} with improved routing
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capabilities in comparison to \gls{igrp}. Overall \gls{eigrp} provides better
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capabilities compared to it's predecessor.
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\subsection[Math]{The Math behind}
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\fig{math/eigrp-dual-long}{eigrp-dual-long}{\glspl{eigrp} \gls{dual} full formula}
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\fig{math/eigrp-dual-long}{eigrp-dual-long}{\glspl{eigrp} \gls{dual} full
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formula}
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By default $K_2$, and $K_4$ is set to zero. (The are user customizable!) And $K_5$ is set to 0.
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By default $K_2$, and $K_4$ is set to zero. (The are user customizable!) And
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$K_5$ is set to 0.
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In effect the resulting shorter formula is this:
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\fig{math/eigrp-dual-short}{eigrp-dual-short}{\glspl{eigrp} \gls{dual} short formula}
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\fig{math/eigrp-dual-short}{eigrp-dual-short}{\glspl{eigrp} \gls{dual} short
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formula}
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\subsection{How it actually works}
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\gls{eigrp} does it routing on a \texttt{next-hop} basis. Meaning it only stores information about a given routes next turn. And \textbf{not} about the destination itself. (Like \gls{ospf} does)
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\gls{eigrp} does it routing on a \texttt{next-hop} basis. Meaning it only stores
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information about a given routes next turn. And \textbf{not} about the
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destination itself. (Like \gls{ospf} does)
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\subsubsection{Defaults}
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