6.x, 4.x ipfw/dummynet pf/altq - network performance issues

[Geraint Edwards]

Justin Robertson <justin at sk1llz.net> said
		(on Mon, Feb 05, 2007 at 01:52:19PM -0800):
>  6.x;
> Normal traffic isn't a problem. The second you get into the realm of 
> abusive traffic, such a DoS/DDoS (over 100mbps) UDP floods the machine 
> falls over. Little packets with ip lengths of 28-29 bytes seem to do the 
> most damage. I've tried playing with various sysctl values and have seen 
> no difference at all. By "falls over" I mean "stops sending all traffic 
> in any direction".

Just a thought (may not be related) but did you see 'known problems' at
	http://www.uk.freebsd.org/releases/6.2R/errata.html ?

-- 
Geraint A. Edwards (aka "Gedge")