OpenVPN performance of the RT-AC86U

CaptainSTX

Part of the Furniture
The destination port does not matter. Same reason why you are able to connect to multiple websites at the same time despite all of them being on port 80/443. What matters most is that the subnet must be different for each client.
Good insight as always from you.

I did some tests first using PIA where I was able to connect to two VPN servers, each server in its own subnet. Could connect with both clients using either the same port or different ports. It worked as you said it should.

Repeated the same test using two Astrill servers unable to connect to more than one server. When connected to the first server and then trying to connect to the second server I received an authentication error.

So it is a function of how the VPN provider runs their service and if they will allow multiple client/server connections.

Thanks.
 

RMerlin

Asuswrt-Merlin dev
So it is a function of how the VPN provider runs their service and if they will allow multiple client/server connections.
That is another factor indeed. VPN providers will usually mention how many simultaneous connections are allowed per account.
 

CaptainSTX

Part of the Furniture
That is another factor indeed. VPN providers will usually mention how many simultaneous connections are allowed per account.
Both Astrill and PIA allow 5 or 6 connections on your subscribed account. Astrill seems to enforce this to mean on a single connection per device.

Don't know if other VPN providers permit multiple server/client connections from a single router. I seem to remember that StrongVPN was also restrictive.
 

cplay

Regular Contributor
Good insight as always from you.

I did some tests first using PIA where I was able to connect to two VPN servers, each server in its own subnet. Could connect with both clients using either the same port or different ports. It worked as you said it should.

Repeated the same test using two Astrill servers unable to connect to more than one server. When connected to the first server and then trying to connect to the second server I received an authentication error.

So it is a function of how the VPN provider runs their service and if they will allow multiple client/server connections.

Thanks.
Yeah, they dont allow you to run multiple tunnels on one device.

Expressvpn do though but Astril is more stable which is why I use their more expensive, awful customer service, service.
 

unclebuk

Regular Contributor
Speedtest_OpenVPN-Se.jpg Hello,

Is it possible to achieve a download speed of 375Mbps using OpenVPN Client on the AC86U?
I am perplexed as I just conducted an ookla cli speed test on a macbook (policy routed) connected by Cat5 to an Asus86U thru a switch with a OpenVPN connection on Client 1 and the speed reached 375Mbps from my loaction in SE Asia. My ISP supplies 500/500Mbps fiber service.
Server is Sweden, SHA256. cipher AES-128-CBC, etc. Can anyone explain what could an this anomaly? Is it even possible. Also, YESTERDAY, I checked the speed to the same server with the OpenVPN connection on the macbook with SHIMO Client and the speed was >600Mbps.
Any thoughts, explanations? This IS NOT possible?!

Thank you in advance.
 

RMerlin

Asuswrt-Merlin dev
SHIMO Client and the speed was >600Mbps.
Any thoughts, explanations? This IS NOT possible?!
Your traffic is not going through the VPN.
 

unclebuk

Regular Contributor
Your traffic is not going through the VPN.
Makes sense. What about the other scenario with the router speed of 375Mbps, same?
Do you know why/how my traffic is not in the tunnel but DNS leak checks and IP location checks out in Sweden? Any way to verify the route my traffic is taking?
Thanks.
 
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CaptainSTX

Part of the Furniture
It is possible that you got that speed but the best most people report is 225 - 275 Mbps using OpenVPN on an AC86. Also just the shear distance from your location to the Swedish server is another reason your speeds seem unbelievable good.

Who is your VPN provider?

Connect to other VPN servers from your provider and see what IPs you get as well as the speeds. Also install the VPN app from your VPN provider if that wasn't what you used before. Pay attention to the Ping times. The shear distance from your location to Sweden will substantially increase the Ping times.

Finally use a couple of different speed tests to see if they all show speeds over 300 Mbps.

Also see what happens when you turn off any ad blockers you are running on the PC and the router and then when you browse to a site are some or all the ads in Swedish?
 
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RMerlin

Asuswrt-Merlin dev
Makes sense. What about the other scenario with the router speed of 375Mbps, same?
If you are way above the benchmarked results reported by others, then expect that your traffic isn't going through the VPN tunnel.

Do you know why/how my traffic is not in the tunnel but DNS leak checks and IP location checks out in Sweden?
Using the DNS server is separate from routing through the tunnel. Do a traceroute to any outside site, and make sure the route does go through the VPN tunnel (quite often it will include 10.x.x.x IP address, with a notably higher ping time then normal traffic).
 

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