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| Open Shortest Path First (OSPF)× | Ohjelmistomääräinen verkkotekniikka (SDN)× | |
|---|---|---|
| Tieteenala | Tietoliikennetekniikka | Tietoliikennetekniikka |
| Menetelmäperhe | Process / pipeline | Process / pipeline |
| Syntyvuosi≠ | 1998 | 2008 |
| Kehittäjä≠ | John Moy | Nick McKeown et al. |
| Tyyppi≠ | link-state routing protocol | programmable network paradigm |
| Alkuperäislähde≠ | Moy, J. T. (1998). OSPF Version 2. RFC 2328. 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 ↗ |
| Rinnakkaisnimet | link-state routing, intra-domain routing | network virtualization, programmable networks |
| Liittyvät≠ | 2 | 4 |
| Tiivistelmä≠ | OSPF is a link-state interior gateway protocol (IGP) for routing within an autonomous system. Introduced by John Moy in 1998, OSPF converges faster than distance-vector protocols and supports equal-cost multipath (ECMP). It remains widely deployed in enterprise and ISP networks for intra-domain routing, though IS-IS is increasingly preferred in large backbones. | 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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