Q34 — AWS ANS-C01 Ch.1

Question 34 of 100 | ← Chapter 1

A company is migrating its on-premises network from its data center in Virginia to its data center in New York. The AWS Direct Connect Connections for the Virginia and New York data center locations are both associated to the us-east-1 Region. The company needs to migrate a Private VIF on an existing Direct Connect hosted connection from Virginia to New York. The company's on-premises network uses the connection To access VPCs through a Direct Connect gateway in us-east-1. The company has already requested a new Direct Connect hosted connection from the new data center to the New York Direct Connect location. Which solution will meet these requirements with the LEAST downtime?

Correct Answer: B. Create a new private VIF on the new Direct Connect hosted connection. Attach the new private VIF to the existing Direct Connect gateway. Configure BGP routing on the new private VIF as a backup route. Perform the switchover during a maintenance window by shutting down BGP On the existing private VIF. Decommission the existing Direct Connect connection.

Explanation

该题目涉及AWS Direct Connect迁移场景，要求将私有VIF从弗吉尼亚迁移至纽约，同时最小化停机时间。根据AWS Direct Connect架构，私有VIF可通过Direct Connect网关连接到多个VPC，同一网关支持跨不同物理位置的连接。题目关键点在于利用现有网关，避免额外配置，并利用BGP路由机制实现平滑切换。AWS文档指出，通过将新私有VIF附加到已有的Direct Connect网关，并配置BGP路由优先级（如AS Path预置或本地优先级），可实现流量逐步切换。选项B通过新VIF附加到现有网关，并配置BGP备份路由，维护窗口仅需关闭旧VIF的BGP会话，无需网关重建或VIF删除，符合最小停机要求。选项A创建新网关会导致冗余配置，选项C/D涉及维护期中断操作，均不符合要求。