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Cost per second
of transmission is very high, so…
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Don’t
waste transmission opportunities.
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Intra-backbone
connectivity might never be end-to-
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end, so…
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Don’t
rely on end-to-end connectivity for protocol
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operations. Use store-and-forward techniques.
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End-to-end round
trip time may vary from minutes to
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weeks, so…
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Don’t
rely on negotiation or
other conversational protocol
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mechanisms; by
the time a conversation converges, the
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reason for it may
have passed. Make protocol
decisions
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autonomously,
locally.
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