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---
-title: "SD-WAN"
-type: concept
-tags:
-  - networking
-  - wan
---
-
-## Aliases
- SD-WAN
- Software-Defined Wide Area Network
- 软件定义广域网
-
-## Description
-软件定义广域网（SD-WAN）是一种通过软件控制层对物理网络进行抽象的技术，实现动态路径选择和负载均衡。在企业云架构中，SD-WAN 通常作为 Overlay Network（叠加网络）部署在 AWS 等公有云上，解决静态路由的局限性。
-
-## Use Cases
- 多分支机构网络互联
- 动态路径选择和流量调度
- 替代传统 MPLS 专线
- Silver Peak 等 SD-WAN 方案集成
-
-## Related Concepts
- [[Hub-and-Spoke]]
- [[Overlay Network]]
- [[Transit Gateway]]
-
-## Related Entities
- [[AWS]]
-
-## Sources
- [[ctp-topic-18-wide-area-networking-in-aws-cloud]]