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IntServ 與DiffServ 之比較
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| IntServ | DiffServ
| Granularity
| Individual flow
| Aggregate of flow
| State in router
| Per-flow
| Per-aggregate
| Traffic classification basis
| Several header fields
| DS field in IP header
| Signaling protocol
| Required (RSVP)
| Not Required
| Coordination for service differentiation
| End-to-End
| Local (per-hop)
| Scalability
| Limited by the number of flow
| Limited by the number of classes of Service
| Network management
| Similar to circuit-switched networks
| Similar to existing IP networks
| Inter-domain deployment
| Multilateral agreement
| Bilateral agreement
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RSVP based
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Integrated Serivce (IntServ)
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Per flow QoS
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Scability Problem
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DiffServ Based
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Differentiated Service (DiffServ)
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Per Hop QoS
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Preferred
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How to offer End-to-End QoS?
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