Date: Fri, 30 Dec 2005 15:24:22 +0100 From: Pavel Duda <element@email.cz> To: freebsd-questions@freebsd.org Subject: IPFW traffic shaping questions Message-ID: <dp3fus$6rv$1@sea.gmane.org>
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Hello, I have few questions for ipfw gurus.. 1) can I see what packets are matching my pipes/queues ? I'm using "ipfw pipe show" for example but there is always only one host so if I'm testing some rules I can't tell if they work or not (maybe there is some other way how to "trace" such things ?) 2) how to correctly setup ul/dl limits for clients ? I have 4096/256 line and I want primarily control upload because when someone starts uploading too much line become unusable for low latency apps (games, ip phone, audio broadcasting). I have created queues to limit upload, but then also download was affected and slowdown was very big. I have tried to add rule for ACK packets - no effect (I'm not network guru maybe this is not enough for speeding up download). Now I'm thinking that maybe I have wrong rules because as I remember pipes and queues are managed diferently then other ipfw rules and even when I put unlimited pipe for "ACK out" it is then limited by second rule for "all out" - pipes/queues are not "first match wins" right ? 3) this is similar to 1) - is there some tool for monitoring how packet "flows" through rules ? And I don't mean using "ipfw log" :-) ... Any advice or web tutorial for network-lama (ie. me :-) ) appreciated. Thanks & Happy New Year Pavel D.
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