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| OSPF（Open Shortest Path First）× | Multiprotocol Label Switching (MPLS)× | |
|---|---|---|
| 分野 | 通信工学 | 通信工学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1998 | 2001 |
| 提唱者≠ | John Moy | IETF MPLS Working Group |
| 種類≠ | link-state routing protocol | label-based forwarding paradigm |
| 原典≠ | Moy, J. T. (1998). OSPF Version 2. RFC 2328. link ↗ | Rosen, E. C., Viswanathan, A., & Callon, R. (2001). Multiprotocol Label Switching Architecture. RFC 3031. link ↗ |
| 別名 | link-state routing, intra-domain routing | label switching, traffic engineering |
| 関連≠ | 2 | 4 |
| 概要≠ | 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. | Multiprotocol Label Switching (MPLS) is a forwarding paradigm that prepends a short label to packets, enabling routers to make forwarding decisions based on the label rather than IP destination address. Introduced by IETF (2001), MPLS was designed to enable traffic engineering, VPN creation, and fast rerouting in IP networks. While MPLS complexity is high, it remains foundational in service provider backbones for traffic engineering and Quality of Service (QoS) provisioning. |
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