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To minimize real time resource reservation overhead without loss of
dynamic resource allocation capability, we decompose an end-to-end
path into some independently managed segments
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| Entrance Stub network | Core network 1 | Core network 2 | Core network 3 | Exit Stub network
| Originating Path
| Short Path 1
| Short Path 2
| Short Path 3
| Terminating Path
| | Long Path
| | End-to-End Path
| | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Real Time End-to-End Path Set Up
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Global Admission Controller only has to reserve:
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Originating path
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Terminating path
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A few short paths
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Overhaed is much less than RSVP
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Short paths are pre-computed by each core network
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