Learn how to speed up slow uploads over VPNs by adding tunnels, enabling ECMP and leveraging built-in TCP acceleration offered by AWS VPN connections.
Table of Contents
Question
Which actions should a network engineer recommend to reduce the upload times? (Choose two.)
A. Create a second VPN tunnel from each office location to the transit gateway. Activate equal-cost multi-path (ECMP) routing.
B. Modify the transit gateway to activate Jumbo MTU on the VPN tunnels to each office location.
C. Replace the existing VPN tunnels with new tunnels that have acceleration activated.
D. Upgrade each EC2 instance to a modern instance type. Activate Jumbo MTU in the operating system.
E. Replace the existing VPN tunnels with new tunnels that have IGMP activated.
Answer
A. Create a second VPN tunnel from each office location to the transit gateway. Activate equal-cost multi-path (ECMP) routing.
C. Replace the existing VPN tunnels with new tunnels that have acceleration activated.
Explanation
The two actions that will help reduce upload times are:
A. Create a second VPN tunnel from each office location to the transit gateway. Activate equal-cost multi-path (ECMP) routing.
C. Replace the existing VPN tunnels with new tunnels that have acceleration activated.
This combination will:
A – Provide additional bandwidth and load balance traffic across tunnels using ECMP
C – Leverage TCP optimization and packet pacing offered by VPN acceleration
The other options do not fully address the issue:
B – Jumbo frames alone may not help uploads
D – Changing instance types does not improve network performance
E – IGMP is for multicast traffic, not relevant here
Adding a second VPN tunnel and enabling ECMP for better bandwidth utilization along with activating acceleration features built into VPN connections will work to optimize network throughput in both directions.
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