Re: [BEHAVE] Port Management To Reduce Logging In Large-Scale NATs

[Olivier Vautrin <[e-mail]>]

Hello Med,

Does that mean you don't expect providers to Compress/Optimize the logs information sent per CGN device at all? 

In my understanding, this proposition will have an effect on the storage of log files only if the logs are kept *as is*. This is because the ports are randomly choosen in draft-tsou-behave-natx4-log-reduction-01, range are not created with contiguous ports so the amount of information sent by the CGN is not decreasing only the syslog message has changed.

Regards,
Olivier.

> > (3) As an aside effect, when port ranges are used the size of the log
> file is optimised (FWIW, see http://tools.ietf.org/html/draft-
> boucadair-port-range-02#section-15.2 for a simplified exercise). Of
> course this optimisation depends on length of the port range.
> 
> I understand that ranges shorten the log file. The point I was trying
> to make is that even on very large CGNs (large enough so that they'd
> need an insane amount of bandwidth to forward all the traffic they're
> seeing), the log sizes are not unmanageable. Sure, they can always be
> reduced, but that's an optional optimization.
> 
> Med: When the factor is 1000, then optimisation can not be seen as a
> luxe.