Re: [LARTC] Shaping with Monthly traffic limits

[Nathan Muise <nmuise@node-alpha.homeip.net>]

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On Wed, 2001-11-14 at 12:37, Don Cohen wrote:
> I don't see to be ale to post to the list, so a personal response:
> 
>  I'm currently living in university housing, and they provide an network
>  connection.  The only limit on transfer speed is link saturation,
>  however there are monthly and daily limits for all data transfered to
>  and from the internet.  Is it currently possible to shape traffic so
>  that there is:
>  - no limit on local transfers
>  - 5G/month, 200/day, 800/night limit on external transfers
>  - the ability to still do transfers as fast as the link will allow
>  (until it bumps up against transfer limits).
> 
> The university does enforce these limits?
> I guess they just stop forwarding when the limits are reached.
> So you don't need to enforce them.  You just want to allocate
> them more evenly over time?  The easy way would be to limit the
> rate at a finer granularity.  Otherwise we get into details of 
> the limit - like when do the limited period start/end.

They track, but never stop forwarding; they just start charging at
$0.05/meg ($50/gig).  I'd rather avoid that.  What I really want to do
is allow uneven allocation, but stay inside the limits.  After looking
at the docs, I think I need something like a Token Bucket Filter, but at
large scale: hours and days rather than seconds.  The only problem is
that I haven't seen anything that even says if this sort of thing is
possible.  

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