VPN Super Slow
Posted: Sun Jul 26, 2020 2:37 pm
Hello,
I have installed softether on OVH Public Cloud and they were running fine for years. However, since 2 days ago, my client reported slow VPN speed which is only 1 - 2 Mbps only regardless they are using SecureNAT or Local Bridge. We didn't make any changes on the server side and trying to figure out what slowing down the connection. Our server has 100 Mbps up and down and my client get 50 Mbps down and 10 Mbps up. In the past, they were getting around 48 Mbps when connected to softether VPN, which is reasonable. However, the problem occurred 2 days ago.
Here is what our test so far:
We tested use all kinds of protocol such as Softether VPN windows, L2TP, SSTP and OpenVPN, all of them are still giving slow speed
We changed the ports for VPN to see if there is anyway to improve it, still getting slow speed
We checked the CPU usage and they are not close to 30% of CPU utilization.
We created new instance on OVH then install softether, cient still getting slow speed
This issue only happened on all OVH datacenter and regardless which region they are, client still getting slow speed
We advised client to change their ISP, still getting slow throughput
We boot up instance in Amazon Light Sail and Linode, and install Softether there, no problem so far.
We created OpenVPN instance in OVH public cloud just to compare with Softether, OpenVPN is giving better throughput, around 49 Mbps
The reason we don't want to move to another vendor and stay with OVH is because they need to have access to their resource in OVH datacenter.
What I still can't figure out that why Softether all of sudden is slowing down in last 2 days and it was OK before that.
Yes, I know that VPN will not give 100% throughput of the ISP throughput, but getting 1 Mbps is just not acceptable for 50 Mbps ISP connection.
Any thought would be appreciated
Thank you
I have installed softether on OVH Public Cloud and they were running fine for years. However, since 2 days ago, my client reported slow VPN speed which is only 1 - 2 Mbps only regardless they are using SecureNAT or Local Bridge. We didn't make any changes on the server side and trying to figure out what slowing down the connection. Our server has 100 Mbps up and down and my client get 50 Mbps down and 10 Mbps up. In the past, they were getting around 48 Mbps when connected to softether VPN, which is reasonable. However, the problem occurred 2 days ago.
Here is what our test so far:
We tested use all kinds of protocol such as Softether VPN windows, L2TP, SSTP and OpenVPN, all of them are still giving slow speed
We changed the ports for VPN to see if there is anyway to improve it, still getting slow speed
We checked the CPU usage and they are not close to 30% of CPU utilization.
We created new instance on OVH then install softether, cient still getting slow speed
This issue only happened on all OVH datacenter and regardless which region they are, client still getting slow speed
We advised client to change their ISP, still getting slow throughput
We boot up instance in Amazon Light Sail and Linode, and install Softether there, no problem so far.
We created OpenVPN instance in OVH public cloud just to compare with Softether, OpenVPN is giving better throughput, around 49 Mbps
The reason we don't want to move to another vendor and stay with OVH is because they need to have access to their resource in OVH datacenter.
What I still can't figure out that why Softether all of sudden is slowing down in last 2 days and it was OK before that.
Yes, I know that VPN will not give 100% throughput of the ISP throughput, but getting 1 Mbps is just not acceptable for 50 Mbps ISP connection.
Any thought would be appreciated
Thank you