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I want to build a "network simulator", to create scenarios such as delayed packets, lost packets, low bandwidth, or combinations of such. This document has been helpful for everything except the bandwidth: http://linux-net.osdl.org/index.php/Netem There is some documentation here regarding bandwidth: http://luxik.cdi.cz/~devik/qos/htb/ What''s the best documentation to read

Hi, I need to set filter-hash and use source-port as hashkey. It seems that I can''t use "hashkey" without using "match". I am using following commands: tc qdisc add ... root handle 1:0 htb # Loop to add 1000 classes (i = 1 to 1000) tc class add ... parent 1:0 classid 1:$i #set filters tc filter add ... protocol ip parent 1:0 u32 tc filter add ...

Hi, Can anyone point me out where the script below is wrong? All I want is that host 172.31.1.1 can only use 10 megabit. If I run this script on the in-between router nothing happens (the host uses still the full 100 mbit, tested with iperf) , so i assume that something must be wrong.... #!/bin/sh # LAN1 NIC tc qdisc del dev eth0 root tc qdisc add dev eth0 root handle 1: htb tc class add dev

Hi, I find this diagram which details the kernel packet traveling : http://www.docum.org/docum.org/kptd/ Is it up to date ? I made some test and I put a DNAT rules in the PREROUTING table of an interface and I attach it a ingress policy, the dst IP wasn''t changed. the DNAT it isn''t yet make. I''ve another question (I''m not sure is it the good mailing list), for