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| Differentiated Services (DiffServ)× | Open Shortest Path First (OSPF)× | |
|---|---|---|
| Lĩnh vực | Viễn thông | Viễn thông |
| Họ | Process / pipeline | Process / pipeline |
| Năm ra đời | 1998 | 1998 |
| Người khởi xướng≠ | IETF DiffServ Working Group | John Moy |
| Loại≠ | QoS architecture | link-state routing protocol |
| Công trình gốc≠ | Blake, S., Black, D., Carlson, M., et al. (1998). An Architecture for Differentiated Services. RFC 2475. link ↗ | Moy, J. T. (1998). OSPF Version 2. RFC 2328. link ↗ |
| Tên gọi khác | quality of service, QoS architecture | link-state routing, intra-domain routing |
| Liên quan≠ | 3 | 2 |
| Tóm tắt≠ | 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. | 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. |
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