site2site VPN througput limited 100mbps?

[chris-doro]

We have hub and spoke Meraki solution.
Hub is MX95 and 2 spokes MX95 and 2 spokes MX75.
All connected to 1Gbit/s switchports.
And provider-internet-bandwidth at least 200Mbit/s on all WAN-ports.
But I only get max. 95 Mbit/s through my VPN-tunnels.
I could not find any limitation in SDWAN-config etc.
Any ideas?
Thanks.

[ww]

How do you test the vpn speed?

Behind al mx you get over 200Mbps internet speed?

[chris-doro]

Testing with iperf3. Works fine. 
I also get approx. 250Mbit/s with the Meraki tool "Dashboard throughput".
But I've seen approx 120Mbit/s VPN-throughput after business-hours.
So I think it's ok, however Meraki divides the throughput to the sites...

[DarrenOC]

Hi @chris-doro - you say at least 200mbps provided by your ISP?  As per @ww ‘s comment what do you get direct out to the internet?

[chris-doro]

Testing with iperf3. Works fine. 
I also get approx. 250Mbit/s with the Meraki tool "Dashboard throughput".
But I've seen approx 120Mbit/s VPN-throughput after business-hours.
So I think it's ok, however Meraki divides the throughput to the sites...

[chakshu]

You will need to consider the latency as a variable as well. Check this document as it might be helpful:

https://bradhedlund.com/2008/12/19/how-to-calculate-tcp-throughput-for-long-distance-links/

[chris-doro · Accepted solution]

Testing with iperf3. Works fine. 
I also get approx. 250Mbit/s with the Meraki tool "Dashboard throughput".
But I've seen approx 120Mbit/s VPN-throughput after business-hours.
So I think it's ok, however Meraki divides the throughput to the sites...