Date: Thu, 03 Jul 2003 09:27:22 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: Michael Sierchio <kudzu@tenebras.com> Cc: net@freebsd.org Subject: Re: ipprecedence Message-ID: <3F03867A.79F82968@kuzbass.ru> References: <20030703002247.A2097@grosbein.pp.ru> <3F0310CE.5070302@tenebras.com>
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Michael Sierchio wrote: > > Eugene Grosbein wrote: > > > Then, if prioritized packed arrives when FIFO is not empty, > > it will not be allowed to go out before packets without ipprecedence > > that are already in FIFO. That's bad. > > That's not quite right. The prioritized packet will presumably be > handled by a different (dummynet) queue, and that queue will have > a higher weight than the other queue (for lower priority traffic). In addition to dummynet WFQ queue there is interface FIFO queue. Always, even in the absence of dummynet :-) It keeps packets that cannot be transmitted immediately because device is busy. And FIFO, by definition, will not allow prioritized packets to go out before others. Eugene
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