Hello,
i want to implement dynamic bandwidth management, i mean if i assign a user 20kb/s but if there is low traffic in network he could use more than 20k ,
if it's possible for all protocol not only http...


Thanks.

i found tc is a good tools for traffic shaping , also good example from lartc.org , but i dont really sure about it's performance for 200 user.....

need more information about your hardware,network configuration,level of expertise.
do u have a good knowledge about bash scripting?
do u use ubuntu?
what book do u have about networking?

kernel-patch-wrr
Extension to traffic Control/network bandwidth management
The WRR scheduler is an extension to the Traffic Control/network bandwidth management part of the Linux 2.2, 2.4 and 2.6 kernels. The scheduler was developed to support distributing bandwidth on a shared Internet connection fairly between local machines.
-As a default all local machines will get equally much of the bandwidth if they have sufficient demand. This is obtained by doing so-called weighted round robin (wrr) scheduling.
-It is possible to give machines transferring much data over a long or short period of time less bandwidth.
-It can work on a bridge, a router or on a firewall.
-Supports accounting locally generated masqueraded packets to the correct local machine.
-On the WRR home page an extension is available which includes patches for Squid and the Nec socks5 proxy servers so that proxied packets can also be accounted to the correct local machine.
-Includes a configuration file based set of scripts that will setup everything without changing your basic network setup. The scripts will allow you to shape both incoming and outgoing traffic.

http://www.zz9.dk/wrr

The iproute suite, also known as iproute2, is a collection of utilities for networking and traffic control

http://tldp.org/HOWTO/Traffic-Control-HOWTO/


http://lartc.org/lartc.html

http://blog.edseek.com/~jasonb/artic...affic_shaping/

Thank you All,
I implement traffic shaping (fairness) on my network but now i have other problem , some users are using IDM or other internet downloader so there are unequal demand for internet , now i want to know, is there any way to equal internet demand (port 80)....

best regards.

need more information about your hardware,network configuration.
do u have a good knowledge about bash scripting?
do u use ubuntu?

thanks for your help,
i have debian lenny server as default gateway ,and iptables as firewall , i use MASQUERADE for internet sharing and also have enough knowledge about writing bash script(not complex).

for info , i can replace iptables with other firewalls(inclulde Microtik)

Trickle is a voluntary, cooperative bandwidth shaper. it works entirely in userland and is very easy to use.
The most simple application is to limit the bandwidth usage of programs.

hi,
Trickle is good app for limiting bandwidth but it does not work with windows base downloaders, exp IDM,.. , well i was thinking about assigning every user a specific bandwidth but according to current active users (connected to port 80) in gateway, for example i count current users connected to internet and with dividing internet bandwidth(exp. 128kbit) by current users , i split bandwidth equally between users. the problem is i have to do it every for example 3 hours

any suggestion....

you didn't tell what your network hardware components are..

i have max 80 users in network and using HP server (debian lenny) for gateway and firewall and samba,mail,.. also have Lease line for internet....

i implement it using mikrotik , using CPQ feature , now i want to know is it possible in linux ?????

Best Regards.