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---
title: "TGW Peering"
type: concept
tags: [AWS, Networking, Transit Gateway, Multi-Region]
sources: [ctp-topic-18-wide-area-networking-in-aws-cloud]
last_updated: 2026-05-07
---
## TGW Peering
TGW PeeringTransit Gateway Peering是在不同区域Region或同一区域Region内的两个 AWS Transit Gateway 之间建立的点对点连接,用于跨网段流量传输和跨区域 VPC 互联。
## Definition
- **连接对象**: 两个 Transit Gateway可跨区域或同区域
- **流量类型**: VPC-to-VPC、Transit Gateway-to-On-prem、跨区域互联
- **路由控制**: 通过路由表Transit Gateway Route Table配置支持静态路由和关联/传播机制
## In CTP Global Architecture
在 [[ctp-topic-18-wide-area-networking-in-aws-cloud]] 中描述的架构:
- **连接模式**: 所有 Landing Zones 通过 TGW Peering 接入各自地理区域的区域 Hub Transit Gateway
- **跨区域连接**: 各区域 Hub Transit Gateway 之间通过 Full Mesh全网状TGW Peering 连接,确保全球流量可达
- **地理分区**: APJ/EMEA/AMS 三大区域,每个区域有独立的 Hub Transit Gateway如 EMEA 伦敦、AMS 俄勒冈)
## Key Properties
| 属性 | 值 |
|------|-----|
| 连接类型 | 点对点Peer-to-Peer |
| 跨区域支持 | ✅ 支持跨 Region Peering |
| 带宽限制 | 受限于 AWS 全球网络基础设施 |
| 路由方式 | Transit Gateway Route Table可关联多个路由表 |
| 与 TGW Peering 对比 | 跨区域连接 vs 区域内连接 |
## Relationship to Related Concepts
| 概念 | 关系 |
|------|------|
| [[AWS-Transit-Gateway-TGW]] | TGW Peering 的连接主体 |
| [[Hub-and-Spoke]] | Landing Zone 作为 Spoke 通过 TGW Peering 接入 Hub |
| [[Static-Routing]] | 当前 TGW Peering 间路由依赖静态前缀列表 |
## Connections
- [[ctp-topic-18-wide-area-networking-in-aws-cloud]] ← 连接机制 ← [[TGW-Peering]]
- [[AWS-Transit-Gateway-TGW]] ← 连接对象 ← [[TGW-Peering]]
- [[Hub-and-Spoke]] ← 实现方式 ← [[TGW-Peering]]
## Sources
- [[ctp-topic-18-wide-area-networking-in-aws-cloud]]