altq and max number of classes on xBSD

[Nickola Kolev]

Hello,

Currently I have a GNU/Linux based router, which is serving as a
traffic control gateway for a /19 network. Right now, there are about
6000 classes in a hierarchy, built upon the hierarchycal token bucket
qdisc.

I'd like to build a Free/Open/NetBSD router, utilizing ALTQ+pf, to
replace the linux machine, but as far as I know, the maximum number of
classes (at least in the FreeBSD implementation) is limited to 256 for
CBQ and 64 for HSFC, which is absolutely insufficient for my needs.

Finally, my question is is there a way to raise the maximum number of
classes in a hierarchy (besides the artificial change in altq_hfsc.h
and altq_cbq.h)? How stable would a system like that be?

If you have any suggestions for a setup, which can do the job of
traffic controlling /19 with a hierarchy of classes, each with
different guaranteed and maximum rates, I'd be very grateful.

Regards,
Nickola
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