VPN Tweaks
VPN Tweaks
Hi Philip!
I have a question on VPN:
UDP Connection
Speed is initially fast, almost 100% of my subscribed speed. However, it would burst down to around 50% of my subscribed speed then it gets stuck in there. It doesn't burst back to 100%. I think it's suppose to burst up and down. This is using Internet download manager for large files. 1G and above
TCP Connection
Speed is fast. It would burst down then back to 100% of my subscribed speed. It bursts up and down
All a long I thought UDP connection is suppose to be faster. Is there something that I'm missing here? Is there something that needs to be tweaked? Is there a setting in NIC that needs to be changed?
Thanks a lot
I have a question on VPN:
UDP Connection
Speed is initially fast, almost 100% of my subscribed speed. However, it would burst down to around 50% of my subscribed speed then it gets stuck in there. It doesn't burst back to 100%. I think it's suppose to burst up and down. This is using Internet download manager for large files. 1G and above
TCP Connection
Speed is fast. It would burst down then back to 100% of my subscribed speed. It bursts up and down
All a long I thought UDP connection is suppose to be faster. Is there something that I'm missing here? Is there something that needs to be tweaked? Is there a setting in NIC that needs to be changed?
Thanks a lot
Hi Mark,
Some networks restrict the speed on certain protocols... Generally you are right, UDP is supposed to be faster with stable connections, as it does not wait for acknowledgements, it is a stateless protocol.
It is very dependent on what type of client and OS you use also, if you use OpenVPN increasing the "sndbuf" and "rcvbuf" may help.
As far as the Network Adapter tweaks, I would look into generally turning off any "Offloads" and "Power Saving" features, there is some info on tweaking network adapter settings on the main site here: http://www.speedguide.net/articles/netw ... ation-3449
I hope this helps
Some networks restrict the speed on certain protocols... Generally you are right, UDP is supposed to be faster with stable connections, as it does not wait for acknowledgements, it is a stateless protocol.
It is very dependent on what type of client and OS you use also, if you use OpenVPN increasing the "sndbuf" and "rcvbuf" may help.
As far as the Network Adapter tweaks, I would look into generally turning off any "Offloads" and "Power Saving" features, there is some info on tweaking network adapter settings on the main site here: http://www.speedguide.net/articles/netw ... ation-3449
I hope this helps
Interesting... Not sure, DNS is theoretically used only for name resolution, i.e. when domains you are downloading from need to be resolved to IP addresses, not during transfers. The information is then cached locally as well.
There could be some type of prioritization by your VPN provider, they may give lower priority to clients using different DNS servers. Can you replicate this, i.e. what happens if you go back and forth between Google, your ISP's DNS, and your VPN provider's DNS ?
What about these third party DNS servers ? (you don't have to test all, just some other options for testing)
Level3
209.244.0.3
209.244.0.4
Open DNS
208.67.222.222
208.67.220.220
There could be some type of prioritization by your VPN provider, they may give lower priority to clients using different DNS servers. Can you replicate this, i.e. what happens if you go back and forth between Google, your ISP's DNS, and your VPN provider's DNS ?
What about these third party DNS servers ? (you don't have to test all, just some other options for testing)
Level3
209.244.0.3
209.244.0.4
Open DNS
208.67.222.222
208.67.220.220
Philip,
VyperVPN app allows you to have openvpn mtu optimized by using their app. Their default is 1500. I ran mtu optimization feature 3x and I'm getting 1569. Is this unusual? So far website are snappier but the download speed for really large files is the same as mtu=1500
What are your thoughts? I though MTU is up to 1500 only
VyperVPN app allows you to have openvpn mtu optimized by using their app. Their default is 1500. I ran mtu optimization feature 3x and I'm getting 1569. Is this unusual? So far website are snappier but the download speed for really large files is the same as mtu=1500
What are your thoughts? I though MTU is up to 1500 only
Philip,
I just need to be clarified. "OS /Router MTU" vs "tun MTU" are 2 different things? Is it possible to have bigger value for "tun MTU" and maintain the 1500 value for "OS & ROUTER"?
I have been experimenting with the Vypr VPN MTU. If I set the 'tun MTU" to 1500 I sometimes get incomplete websites. On the other hand if I set the "Vypr VPN MTU" to the optimized value of 1569 as the app suggested, I get complete website.
I'm kinda confuse with these two "MTUs"
I just need to be clarified. "OS /Router MTU" vs "tun MTU" are 2 different things? Is it possible to have bigger value for "tun MTU" and maintain the 1500 value for "OS & ROUTER"?
I have been experimenting with the Vypr VPN MTU. If I set the 'tun MTU" to 1500 I sometimes get incomplete websites. On the other hand if I set the "Vypr VPN MTU" to the optimized value of 1569 as the app suggested, I get complete website.
I'm kinda confuse with these two "MTUs"