RE: IPCOMP and IPSEC

[Eric Dean <[e-mail]>]

> 
> Using the Calgary files benchmark with LZS algorithm, the compression ratio
> of IP datagrams with MTU of 1500 octets was 1.82:1, not that far from the
> max the algorithm can offer 2.2:1.  Stateless compression is a must in IP,
> so the overall performance gain is pretty significant.  And, stateless
> compression has its implementation advantages.

Streaming a contiguous file through a compression device is not 
indicative of real Internet traffic.  Packets of various application are 
interleaved within flows.  The Calgary files may be a good benchmark for 
comparing different compression algorithms in a stateful environment; 
however, they do not represent the stateless environment that the 
Internet represents.

-eric