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| Connection |
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| Management |
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| ä | Connection-oriented
services have three phases |
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| ä | connection
establishment |
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| ä | data
transfer |
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| ä | connection
termination |
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| ä | Connection
establishment: |
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| ä | allows
each end to ensure other exists |
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| ä | allows
negotiation of optional parameters |
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| ä | triggers
allocation of resources |
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| ä | In
unreliable network, connection establishment |
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| non-trivial
(2-army problem): |
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