Re: Bandwidth..

 http://www.linuxdoc.org/HOWTO/Adv-Routing-HOWTO.html

David Luyer wrote:

> > Sorry for the off-topic post.
> > i was curious if anyone knows any solutions
> > for bandwidth limiting. etc. right now i have users
> > on our network. andi want to limit they're connection speeds
> > to 128k, 256k etc.. without them losing packets etc..
> > i tried using ciscos "Commited Access Rate" limiting.
> > but it seems to just drop packets that exceed the speed specifications
> > thus causing alot of problems.
>
> 1: Squid delay pools
>
> These work by reducing the rate at which data is permitted to flow, ie, at
> the TCP layer.
>
> 2: rate-limit command on Ciscos
>
> As you mentioned, this works at a lower layer - basically dropping packets.
>
> 3: FreeBSD "pipes" in ipfw
>
> These can work either by dropping packets or by adding artificial latency.
>
> I have had the purposes to use all of these and a number of other techniques
> (including SOCKS daemons communicating via shared memory and a Harvest cache
> parenting via SOCKS... long ago) and each definitely has its uses. They are
> all quite well documented so read about them and see... there are also ways
> to do bandwidth limiting in the Linux kernel, as well as commercial solutions
> which scale up to single boxes to rate limit all traffic to thousands of IP
> addresses to fixed per-user rates. However the Squid one is the only one
> I can think of that acts at the TCP layer to slow down the connections rather
> than just dropping the packets.
>
> David.
> --
> ----------------------------------------------
> David Luyer
> Senior Network Engineer
> Pacific Internet (Aust) Pty Ltd
> Phone: +61 3 9674 7525
> Fax: +61 3 9699 8693
> Mobile: +61 4 1064 2258, +61 4 1114 2258
> http://www.pacific.net.au NASDAQ: PCNTF
> << fast 'n easy >>
> ----------------------------------------------
Received on Wed Jul 19 2000 - 03:50:48 MDT