pf ALTQ bandwidth limited to a 32bit value (4294Mb)

Greg Hennessy Greg.Hennessy at
Wed Jul 6 23:09:49 UTC 2011

> ALTQ using hfsc is limited to a maximum parent bandwidth of 4294Mb.
> This value is 2^32 or 4,294,967,296 bits. If you set the bandwidth any higher,
> altq will flip back to zero. This "bug" was found when trying to test 10 gigabit
> and 40 gigabit bandwidth models. 

What a problem to have :-) 

On a side note out of pure curiousity, what's PF performance like up in the stratosphere under those sort of loads/packet rates ? :-)


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