Q:

Multiple VPN tunnels between two hosts to increase bandwidth

I set up VPN tunnel between my web server and a proxy server to by pass some restrictions such as the country firewall.
The VPN tunnel works well. But when too many requests to my server, all the HTTP request trans between the single tunnel.
Though I've remove my server side restriction for each IP， but when the traffic is heavy, the page loads very slowly. So I want to know how to solve this. 
Now I try to set up multi tunnels, but I googles a while, with no progress.

A:

In the common case a bandwidth problem won't be solved by adding more tunnels.  
If you have traffic that is compressible and option in openvpn is adding:

comp-lzo  

on each VPN endpoints server.conf
This can decrease bandwidth usage by compressing data before sending it through the tunnel.
you can read more about it in the manpage

