On Friday 29 November 2002 17:13, James Ma wrote:
> Hi, All,
>
> I went through the HTB test section on www.docum.org. One thing I am very
> interested in is the scripts Stef was using:
>
> BW1=$1'kbps'
> BW2=`expr 100 - $1`
> BW2=$BW2'kbps'
>
> tc qdisc del dev eth0 root handle 1:
>
> tc qdisc add dev eth0 root handle 1: htb default 12
> tc class add dev eth0 parent 1: classid 1:1 htb rate 100kbps ceil 100kbps
> burst 2k tc class add dev eth0 parent 1:1 classid 1:10 htb rate $BW1 ceil
> 100kbps burst 2k tc class add dev eth0 parent 1:1 classid 1:11 htb rate
> $BW2 ceil 100kbps burst 2k
>
> tc filter add dev eth0 parent 1: protocol ip prio 3 handle 1 fw classid
> 10:10 tc filter add dev eth0 parent 1: protocol ip prio 3 handle 2 fw
> classid 10:11
>
> iptables -F
> iptables -X
> iptables -N acc_0
> iptables -N acc_1
> iptables -A OUTPUT -t mangle -p tcp --dport 2000 -j MARK --set-mark 1
> iptables -A OUTPUT -t mangle -p tcp --dport 2001 -j MARK --set-mark 2
> iptables -A OUTPUT -p tcp --dport 2000 -j acc_0
> iptables -A OUTPUT -p tcp --dport 2001 -j acc_1
>
> It seems we could dynamically change the bandwidth allocation between
> children. But can we use dynamic bandwidth for the parent? I mean can I use
> a variable to replace 100kbps in the parent queue defination and change it
> whenever this script file is called? This way, the scripts will work with
> dynamic bandwidth environment, I can monitor the bandwidth I have
> currently, and give it to the scripts dynamically by calling the script
> file with the bandwidth parameter. Is this practical? Has anybody tried it
> before?
I never tried it but why not?
But how can you know the maximum bandwidth ?? If you limit all the traffic to
200kbit, and suddenly you can use 250kbit, how will you notice this?
Stef
--
stef.coene@docum.org
"Using Linux as bandwidth manager"
http://www.docum.org/
#lartc @ irc.oftc.net
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