Question

Difficulty: HardInfrastructure Migration with AWS Application Migration Service (MGN)

An enterprise is planning to migrate 50 physical servers from an on-premises data center to AWS using AWS Application Migration Service (MGN). The hybrid network infrastructure includes a 10 Gbps AWS Direct Connect connection terminated on a Transit Gateway in a central shared services VPC. Strict security policies dictate that all replication traffic must be private and cannot traverse the public internet. The staging area VPC has no Internet Gateway attached. After installing the AWS Replication Agent on several on-premises servers, the Solutions Architect notes that the replication status is 'Stalled' and the agents cannot connect to the replication servers. Which two configuration steps must the Solutions Architect perform to resolve this issue and establish private replication? (Select TWO.)

  1. Configure the AWS Application Migration Service replication settings to use private IP routing, and ensure that the on-premises firewall and the staging VPC security groups permit outbound and inbound traffic on TCP Port 1500 respectively.Answer
  2. Create interface VPC endpoints for AWS Application Migration Service in the staging VPC, and associate the resulting Route 53 Private Hosted Zone with the staging VPC and any peer VPCs that handle DNS resolution for the hybrid network.Answer
  3. C
    Deploy a single NAT Gateway in the staging VPC to route the data replication traffic, allowing the replication servers to communicate with the AWS Application Migration Service public endpoints over the public internet.
  4. D
    Configure the AWS Replication Agent to route block-level data replication over TCP Port 443 to the MGN control plane interface endpoint, eliminating the need to open port 1500 on the on-premises firewall.
  5. E
    Configure a Direct Connect Gateway to enable transitive VPC-to-VPC routing between the staging VPC and the central shared services VPC without using a Transit Gateway to resolve DNS queries.

Answer

The correct actions are to configure the AWS Application Migration Service replication settings to use private IP routing while ensuring port 1500 is open, and to create interface VPC endpoints for AWS Application Migration Service while associating the private hosted zone with the relevant VPCs.
To establish private replication using AWS Application Migration Service (MGN) over Direct Connect, you must configure the service to use private IP routing and ensure TCP Port 1500 is allowed through both the local firewall and the staging area security groups. Additionally, you must provision interface VPC endpoints for the MGN service endpoint in the staging VPC, and associate the resulting Route 53 Private Hosted Zone with the staging VPC and any peer VPCs that resolve DNS queries, ensuring that the replication agents can resolve the service endpoint to private IP addresses.

Step-by-Step Solution

1
Verify control plane connectivity requirements for the replication agent.
Determine that the agent needs to reach the MGN service control plane privately via com.amazonaws.<region>.mgn using interface VPC endpoints and associated Route 53 Private Hosted Zones.
The agent requires control plane access to receive instructions and coordinate migration, which must go over Direct Connect in a private architecture.
2
Configure replication data path settings in the MGN replication template.
Enable private IP routing in the replication template to ensure data replicates over the Direct Connect connection rather than the public internet.
Private IP routing forces the replication servers to use private IP addresses, satisfying the security requirements.
3
Open the necessary network paths for data replication.
Open TCP Port 1500 on the on-premises firewall and the staging VPC security groups.
Replication agents stream block-level data to replication servers specifically over port 1500, which is distinct from control plane communications.

Key Concept

Establishing private, secure replication for AWS Application Migration Service (MGN) using Direct Connect, VPC endpoints, and appropriate port configurations.
Estimated Time:2m 30s
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