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- Posts: 6
- Joined: Fri Mar 06, 2015 1:14 pm
Hi,
I have a very weird issue.
My setup:
Server side: OpenVPN Access Server on a Ubuntu 14 VPS (Tagadab UK). I'm the only user of that server, i've setted it up.
Client side: Windows 7 64 bit running Viscosity as a VPN client. No antivirus, no antimalware and no firewall running.
Apparently i've no performance, bandwidth or latency issues at all...90% of the times at least.
But now and then the connection slows down dramatically with very high ping times between server and client.
Just look (pinging from server to client):
1480 bytes from 172.27.224.10: icmp_seq=128 ttl=128 time=76.4 ms
1480 bytes from 172.27.224.10: icmp_seq=129 ttl=128 time=60.5 ms
1480 bytes from 172.27.224.10: icmp_seq=130 ttl=128 time=70.9 ms
1480 bytes from 172.27.224.10: icmp_seq=131 ttl=128 time=74.0 ms
1480 bytes from 172.27.224.10: icmp_seq=132 ttl=128 time=75.4 ms
1480 bytes from 172.27.224.10: icmp_seq=133 ttl=128 time=10926 ms
1480 bytes from 172.27.224.10: icmp_seq=134 ttl=128 time=9920 ms
1480 bytes from 172.27.224.10: icmp_seq=135 ttl=128 time=8912 ms
1480 bytes from 172.27.224.10: icmp_seq=136 ttl=128 time=7906 ms
1480 bytes from 172.27.224.10: icmp_seq=137 ttl=128 time=6900 ms
1480 bytes from 172.27.224.10: icmp_seq=138 ttl=128 time=5892 ms
1480 bytes from 172.27.224.10: icmp_seq=139 ttl=128 time=4884 ms
1480 bytes from 172.27.224.10: icmp_seq=140 ttl=128 time=3877 ms
1480 bytes from 172.27.224.10: icmp_seq=141 ttl=128 time=2869 ms
1480 bytes from 172.27.224.10: icmp_seq=142 ttl=128 time=1861 ms
1480 bytes from 172.27.224.10: icmp_seq=143 ttl=128 time=854 ms
1480 bytes from 172.27.224.10: icmp_seq=144 ttl=128 time=71.1 ms
1480 bytes from 172.27.224.10: icmp_seq=145 ttl=128 time=70.3 ms
1480 bytes from 172.27.224.10: icmp_seq=146 ttl=128 time=65.7 ms
1480 bytes from 172.27.224.10: icmp_seq=147 ttl=128 time=66.5 ms
This is happening random, sometimes after 2 hours of VPN connection, sometimes it doesn't happen at all, sometimes after 30 minutes. Unfortunately when it happens, it's going to happen again and again, a few seconds or minutes later and disconneting and reconnecting doesn't solve it. Sometimes rebooting may work. Sometimes not.
You may wonder it's a network problem: networking/routing is having a temporary issue and so the ping is high. NOT, unfortunately. Cause it doesn't look random at all.
Those pings happen exactly when I load a new webpage or I pause or "unpause" a video stream and so on. When it happens It's clearly related to the user activity. The same activities just before had no influence but suddenly they have...
I did a lot of monitoring and researching and I'm almost sure the problem is client side. One time, for example, I had total relief just changing the VPN client. Unluckily that was just a temporary workaround. In any case the server is not overloaded and its networking is working regularly and at full efficiency.
Someone told me It may be a Windows 7 64 issue/bug, someone suggested me to disable IPV6 (and i did) or to set a different MTU size both on server and client and i did...but no luck.
I'm desperate
Please help...
I have a very weird issue.
My setup:
Server side: OpenVPN Access Server on a Ubuntu 14 VPS (Tagadab UK). I'm the only user of that server, i've setted it up.
Client side: Windows 7 64 bit running Viscosity as a VPN client. No antivirus, no antimalware and no firewall running.
Apparently i've no performance, bandwidth or latency issues at all...90% of the times at least.
But now and then the connection slows down dramatically with very high ping times between server and client.
Just look (pinging from server to client):
1480 bytes from 172.27.224.10: icmp_seq=128 ttl=128 time=76.4 ms
1480 bytes from 172.27.224.10: icmp_seq=129 ttl=128 time=60.5 ms
1480 bytes from 172.27.224.10: icmp_seq=130 ttl=128 time=70.9 ms
1480 bytes from 172.27.224.10: icmp_seq=131 ttl=128 time=74.0 ms
1480 bytes from 172.27.224.10: icmp_seq=132 ttl=128 time=75.4 ms
1480 bytes from 172.27.224.10: icmp_seq=133 ttl=128 time=10926 ms
1480 bytes from 172.27.224.10: icmp_seq=134 ttl=128 time=9920 ms
1480 bytes from 172.27.224.10: icmp_seq=135 ttl=128 time=8912 ms
1480 bytes from 172.27.224.10: icmp_seq=136 ttl=128 time=7906 ms
1480 bytes from 172.27.224.10: icmp_seq=137 ttl=128 time=6900 ms
1480 bytes from 172.27.224.10: icmp_seq=138 ttl=128 time=5892 ms
1480 bytes from 172.27.224.10: icmp_seq=139 ttl=128 time=4884 ms
1480 bytes from 172.27.224.10: icmp_seq=140 ttl=128 time=3877 ms
1480 bytes from 172.27.224.10: icmp_seq=141 ttl=128 time=2869 ms
1480 bytes from 172.27.224.10: icmp_seq=142 ttl=128 time=1861 ms
1480 bytes from 172.27.224.10: icmp_seq=143 ttl=128 time=854 ms
1480 bytes from 172.27.224.10: icmp_seq=144 ttl=128 time=71.1 ms
1480 bytes from 172.27.224.10: icmp_seq=145 ttl=128 time=70.3 ms
1480 bytes from 172.27.224.10: icmp_seq=146 ttl=128 time=65.7 ms
1480 bytes from 172.27.224.10: icmp_seq=147 ttl=128 time=66.5 ms
This is happening random, sometimes after 2 hours of VPN connection, sometimes it doesn't happen at all, sometimes after 30 minutes. Unfortunately when it happens, it's going to happen again and again, a few seconds or minutes later and disconneting and reconnecting doesn't solve it. Sometimes rebooting may work. Sometimes not.
You may wonder it's a network problem: networking/routing is having a temporary issue and so the ping is high. NOT, unfortunately. Cause it doesn't look random at all.
Those pings happen exactly when I load a new webpage or I pause or "unpause" a video stream and so on. When it happens It's clearly related to the user activity. The same activities just before had no influence but suddenly they have...
I did a lot of monitoring and researching and I'm almost sure the problem is client side. One time, for example, I had total relief just changing the VPN client. Unluckily that was just a temporary workaround. In any case the server is not overloaded and its networking is working regularly and at full efficiency.
Someone told me It may be a Windows 7 64 issue/bug, someone suggested me to disable IPV6 (and i did) or to set a different MTU size both on server and client and i did...but no luck.
I'm desperate
