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Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 129 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01
Question #: 129
Topic #: 1
[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company hosts its IT infrastructure in an on-premises data center. The company wants to migrate the infrastructure to the AWS Cloud in phases. A network engineer wants to set up a 10 Gbps AWS Direct Connect dedicated connection between the on-premises data center and VPCs. The company's network provider needs 3 months to provision the Direct Connect connection.

In the meantime, the network engineer implements a temporary solution by deploying an AWS Site-to-Site VPN connection that terminates to a virtual private gateway. The network engineer observes that the bandwidth of the Site-to-Site VPN connection is capped at 1.25 Gbps despite a powerful customer gateway device.

What should the network engineer do to improve the VPN connection bandwidth before the implementation of the Direct Connect connection?

  • A. Contact AWS Support to request a bandwidth quota increase for the existing Site-to-Site VPN connection.
  • B. Discuss the issue with the hardware vendor. Buy a bigger and more powerful customer gateway device that has faster encryption and decryption capabilities.
  • C. Create several additional Site-to-Site VPN connections that terminate on the same virtual gateway. Configure equal-cost multi-path (ECMP) routing to use all the VPN connections simultaneously.
  • D. Create a transit gateway. Attach the VPCs to the transit gateway. Create several additional Site-to-Site VPN connections that terminate on the transit gateway. Configure equal-cost multi-path (ECMP) routing to use all the VPN connections simultaneously.
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Suggested Answer: D 🗳️
by devilman222 at June 15, 2023, 7:44 p.m.
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AzureDP900
3 weeks, 6 days ago
Selected Answer: D
Transit Gateway : A transit gateway is an AWS service that allows you to create a centralized network hub, making it easier to connect and manage multiple VPCs. Attaching VPCs to the transit gateway : By attaching the VPCs to the transit gateway, you can extend your existing Site-to-Site VPN connections across the different regions or accounts. Creating additional Site-to-Site VPN connections : Adding more Site-to-Site VPN connections that terminate on the transit gateway will increase the available bandwidth and improve overall network throughput. Equal-cost multi-path (ECMP) routing : By configuring ECMP routing, you can direct traffic across multiple VPN connections, increasing the utilization of each connection and improving the overall performance.
upvoted 1 times
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woorkim
1 month, 3 weeks ago
Selected Answer: D
• TGW – Enable BGP and ECMP for VPN connections. • 2 VPN connection x 2 Tunnels per connection x 1.25 Gbps/tunnel = ~5 Gbps • Single flow is still limited to 1.25Gbps
upvoted 1 times
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evargasbrz
1 year, 5 months ago
Selected Answer: D
D is the right ECMP is not supported for Site-to-Site VPN connections on a virtual private gateway. You can check this document: https://docs.aws.amazon.com/vpn/latest/s2svpn/VPNRoutingTypes.html
upvoted 1 times
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Certified101
1 year, 5 months ago
Selected Answer: D
D is correct
upvoted 1 times
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Neo00
1 year, 6 months ago
Selected Answer: D
D If you establish multiple VPN tunnels to an ECMP-enabled transit gateway, it can scale beyond the default maximum limit of 1.25 Gbps.
upvoted 3 times
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Balasmaniam
1 year, 7 months ago
D:- Ans why is high speed is need to below Per VPN connection, you can achieve 1.25 Gbps of throughput and 140,000 packets per second. When terminating the VPN connections in the Transit Gateway, you can use Equal Cost Multi-Path (ECMP) routing to get a higher VPN bandwidth by aggregating multiple VPN tunnels. To use ECMP, you need to configure dynamic routing in the VPN connections – ECMP is not supported using static routing. https://docs.aws.amazon.com/whitepapers/latest/aws-vpc-connectivity-options/aws-transit-gateway-vpn.html
upvoted 4 times
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tcp22
1 year, 7 months ago
D for sure
upvoted 1 times
tcp22
1 year, 7 months ago
https://repost.aws/knowledge-center/transit-gateway-ecmp-multiple-tunnels
upvoted 1 times
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devilman222
1 year, 7 months ago
The selected answer D, is actually correct this time.
upvoted 3 times
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