[LARTC] FW: Rate goes over setting

[Allan Gee <AllanG@Equation.co.za>]

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-----Original Message-----
From: Allan Gee 
Sent: Tuesday, March 12, 2002 3:27 PM
To: 'lartc-request@mailman.ds9a.nl'
Subject: Rate goes over setting


Hi guys I have a small problem that I want to limit each network behind us
to different rates. The box sits between our router to the internet and the
clients. I have attached a mrtg graph to show the stats and one can see that
every now and then the rate goes over the limit. This is the code I use for
that client who has 64kbit from us and we give him 16kbit only with no
borrowing. As you can see from the script I have tried to set the burst rate
to as low as possible but it still goes over.
What am I doing wrong?

#!/bin/sh
cbq stop
/home/allang/resetFW
TCHTB="/sbin/tc"
BURS="burst 0.1kbit cburst 0.1kbit"

# Destination
TCCLASSDST="/sbin/tc class add dev eth1 parent"
TCQDISCDST="/sbin/tc qdisc add dev eth1 parent"
TCFILTERDST="/sbin/tc filter add dev eth1 parent 1:0 protocol ip prio 1 u32"

# Source
TCCLASSSRC="/sbin/tc class add dev eth0 parent"
TCQDISCSRC="/sbin/tc qdisc add dev eth0 parent"
TCFILTERSRC="/sbin/tc filter add dev eth0 parent 1:0 protocol ip prio 1 u32"
#
# For Transparent Proxy
#
iptables -A PREROUTING -t nat -s 192.168.178.0/24 -p tcp --dport 80 -j DNAT
--to 192.168.177.231:3128 
iptables -A POSTROUTING -t nat -s 192.168.178.0/24 -d 192.168.177.231 -j
SNAT --to 192.168.177.15

# Root & Default Class 
$TCHTB qdisc add dev eth1 root handle 1: htb default 11
$TCCLASSDST 1: classid 1:10 htb rate 100Mbit 
$TCCLASSDST 1:10 classid 1:11 htb rate 100Mbit ceil 100Mbit 
$TCQDISCDST 1:11 handle 12: sfq perturb 10

$TCHTB qdisc add dev eth0 root handle 1: htb default 11
$TCCLASSSRC 1: classid 1:10 htb rate 100Mbit 
$TCCLASSSRC 1:10 classid 1:11 htb rate 100Mbit ceil 100Mbit 
$TCQDISCSRC 1:11 handle 12: sfq perturb 10

# The 16kbit client
$TCCLASSDST 1: classid 1:20 htb rate 16kbit ceil 16kbit $BURS
$TCCLASSDST 1:20 classid 1:21 htb rate 16kbit ceil 16kbit $BURS
$TCQDISCDST 1:21 handle 22: sfq perturb 10
$TCFILTERDST match ip dst 129.0.0.0/24 flowid 1:21

$TCCLASSSRC 1: classid 1:20 htb rate 16kbit ceil 16kbit $BURS
$TCCLASSSRC 1:20 classid 1:21 htb rate 16kbit ceil 16kbit $BURS
$TCQDISCSRC 1:21 handle 22: sfq perturb 10
$TCFILTERSRC match ip src 129.0.0.0/24 flowid 1:21

Regards Allan Gee
Equation
021 4181777



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