Date: Thu, 1 Apr 1999 03:26:46 +0200 From: "Martin Dvorak" <mdvorak@ninell.cz> To: <freebsd-net@FreeBSD.org> Subject: dynamic intelligent traffic shaping Message-ID: <000901be7bde$b5285cb0$5c1971c3@uvulium>
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Hi, I've carefully read all messages about shaping the traffic on FreeBSD system on this mailing list and have two questions: 1. What is the best solution (dummynet or altq or something else) in the following situation: FreeBSD system on Internet server (on T1), each customer has its own IP address(es), each customer's monthly traffic has to be kept at some level (probably by using some clever algorithm (in a script probably), which dynamically (I suppose every hour) changes the traffic limit on customer's IP address(es) to reach as close as possible to monthly limit set by administrator)? That means I need to change shaping speed for each IP address quite often but also need the system to be stable as much as possible. 2. What is the best solution (dummynet or altq or something else) in the following situation: large Internet intranet (I do not know how it is called officialy but I mean an intranet with only one link to Internet (512kb or more) but each computer on this intranet has its own worldwide (non-intranet) IP address and normal (non-limited) access to Internet) with thousands computers on this intranet, a bridge/router on the link between the intranet and Internet. This bridge/router works like this: every intranet packet routes in the intranet with no traffic shaping (of course), but as for packets comming to/from Internet it should shape the traffic of each IP to give every computer on the intranet the same speed to/from Internet. That is the algorithm for shaping the speed of each IP address has to be much more clever than in the first case, it has to be able to change to shaping speed much more frequently (I guess every 5 minutes or even fewer) while changing the speed of much more IP addresses. If not talking about the algorithm (I will describe my idea shortly on the end of this message), I don't even know if it is possible to do it on some acceptable hardware configuration because I guess that only the changing of speed on each IP address so frequently would put very high load on the system, or not? Thank you very much for any though, suggestion or advice. I will appreciate it very much because I really do not have very much experience with these shaping/routing and related matters. Regards, Martin PS: Maybe it will be easier for you to understand what I need in the second case, if I describe why I need it. So, I need it because I want to give each regular user on the intranet the same conditions. I am afraid of people, who would put a proxy on their connection to our intranet and then used this connection for all other computers in their company or even for somebody else. That would mean that these people would steal some part of the link to Internet from the regular users and they would have worse connection to Internet even though they have not broken any rule. That is why I think of this algorithm which would shape the speed of every user (IP address) by their usual traffic. That means: if the line is free, any packet can pass, if it is not, packets from the users which generate smaller traffic will have higher priority. I hope, it could work this way, because I do not want to limit each user's monthly traffic or something like that. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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