41 lines
2.1 KiB
TeX
41 lines
2.1 KiB
TeX
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\begin{table}
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\centering
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\caption{InfiniBand Architecture's service types.}
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\label{tab:service_types}
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\vspace{3mm}
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\begin{tabular}{ p{5.2cm} | p{9.1cm}}
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\hlineB{3}
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\Tstrut
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\textbf{Service Type} & \textbf{Description}\\
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\hhline{=|=}
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\Tstrut
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\acrfull{rc} & In this mode, one \acrshort{qp} on a local node is connected to one \acrshort{qp} on a remote node. This service type ensures message delivery to---thus not consumption by---the remote node. Messages are sent in order and a combination of hardware and channel adapter software resends at communication failure.
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\Bstrut\\
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\hline
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\Tstrut
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\acrfull{uc} & Like \gls{rc}, this service type connects one local \acrshort{qp} with one remote \acrshort{qp}\@. It is unreliable and thus does not support acknowledgment of delivery and simply drops undelivered messages.
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\Bstrut\\
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\hline
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\Tstrut
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\acrfull{ud} & This service type allows a local \acrshort{qp} to communicate with any other unreliable datagram \acrshort{qp} without connecting to it. Like \gls{uc}, this mode is unreliable and thus simply drops packets if they get lost.\newline
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The ability to send data to another \acrshort{qp} without connecting to it is beneficial for scalability.
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\Bstrut\\
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\hline
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\Tstrut
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\acrfull{rd} & Reliable datagram enables a local \acrshort{qp} to communicate with any other \gls{rd} \acrshort{qp} without connecting to it. Contrary to \gls{ud}, this service type is reliable and thus tries to resend messages when they get lost.\newline
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Since reliable datagram is not implemented in the \acrshort{ofed} stack (\autoref{sec:iblibs}), hence not practically usable, it will not be further discussed in the present work.
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\Bstrut\\
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\hline
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\Tstrut
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Raw Datagram & This allows a \acrshort{qp} to send raw datagram messages, which means that \gls{iba} specific headers are stripped from the packets. This service type can be divided into IPv6 raw datagram and EtherType raw datagram.\newline
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This service type will not be further discussed in the present work.
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\Bstrut\\
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\hlineB{3}
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\end{tabular}
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\newpage
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\end{table}
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