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| Differentiated Services (DiffServ)× | Software-Defined Networking (SDN)× | |
|---|---|---|
| Fachgebiet | Telekommunikation | Telekommunikation |
| Familie | Process / pipeline | Process / pipeline |
| Entstehungsjahr≠ | 1998 | 2008 |
| Urheber≠ | IETF DiffServ Working Group | Nick McKeown et al. |
| Typ≠ | QoS architecture | programmable network paradigm |
| Wegweisende Quelle≠ | Blake, S., Black, D., Carlson, M., et al. (1998). An Architecture for Differentiated Services. RFC 2475. link ↗ | McKeown, N., Anderson, T., Balakrishnan, H., et al. (2008). OpenFlow: enabling innovation in campus networks. ACM SIGCOMM Computer Communication Review, 38(2), 69-74. DOI ↗ |
| Aliasnamen | quality of service, QoS architecture | network virtualization, programmable networks |
| Verwandt≠ | 3 | 4 |
| Zusammenfassung≠ | DiffServ is a QoS architecture providing scalable, class-based service differentiation in networks. Introduced by IETF (1998), DiffServ marks packets with a Differentiated Services Code Point (DSCP) in the IP header, enabling routers to apply per-hop-behaviors (PHBs) based on markings. Unlike IntServ (which reserves resources per-flow), DiffServ is stateless and scalable to Internet scale. DiffServ remains the primary QoS mechanism in ISP and enterprise networks. | Software-Defined Networking (SDN) is a network architecture paradigm that decouples the control plane (routing decisions) from the data plane (packet forwarding). Introduced by McKeown et al. (2008) with OpenFlow, SDN enables network programmability by centralizing control logic in software-based controllers that direct forwarding behavior of simple programmable switches. SDN has transformed network operations, enabling rapid service deployment, traffic engineering, and cloud integration. It is now foundational in data centers and service provider networks. |
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