AWS VPN FROM VIETNAM TO HONGKONG

Question

We have done a few tests, the results I sent are in the link below.
https://docs.google.com/spreadsheets/d/110uMT5UEqmnSXB6KnPzDgk2w8uvLlBvu/edit?usp=sharing&ouid=104925185459521090885&rtpof=true&sd=true  
You can see that when traffic is pushed through the VPN service on AWS, the bandwidth drops to about 500- 600Mbps (Scenario 3 and 4) while in theory it can reach 1.25G.
(Traffic at GA we are pushing through HAN50). We have tried many times, but the results do not change?
Model or Software Version: 2.7.0-RELEASE (amd64)

Answer

AWS VPNs do support a maximum throughput of around 1.25Gbps.
https://docs.aws.amazon.com/vpn/latest/s2svpn/vpn-limits.html
The actual bandwidth you do get though can depend on a lot of different factors like packet size, MTU values on your VPN tunnels,  traffic mix (TCP/UDP), shaping or throttling policies on intermediate networks, internet weather, and specific application requirements.
Additionally, Try to see if there is a possibility for you to use IPERF or some other tool to send more than 1Gbps continuously for around 5 mins and check if you see any improvement or not.

Also give this a read : https://aws.amazon.com/blogs/networking-and-content-delivery/aws-site-to-site-vpn-choosing-the-right-options-to-optimize-performance/

AWS VPN FROM VIETNAM TO HONGKONG

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