[Openvpn-users] OpenVPN utilized as a traffic compression mechanism

[Andrew Alston <aalston@xxxxxxxxxxxxx>]

Hi Guys,

This is a rather strange one.  I have the following scenario I'm 
considering, and Im curious to know if anyone else has tried something 
like this, or could give me some kind of indication as to thoughts on 
the idea, as well as hardware specifications I would need to actually do 
this.

We have a 112mbit international line, that is currently virtually 
saturated, the idea is to put 2 boxes on either side of that line, both 
running openvpn.  We would then form a tunnel between them, and turn on 
LZO compression, in effect providing us with compression over our line.  
The data carried over the line is general internet access (the line 
belongs to an NREN in South Africa, and is used to provide general 
internet to the entire higher education sector in south africa).

My questions are as follows,

a.) What kinda hardware would I need to real time compress this much 
traffic, considering the *VAST* number of tcp sessions being formed 
between the universities and various places on the internet, the high 
PPS rates we run on that line, the throughput etc.
b.) Would I see a huge latency increase doing this
c.) Any other general comments about a solution like this

Anyone who can give me some advice, please let me know

Thanks

Andrew Alston
TENET - Technical Officer

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