[LARTC] Ceil Rate

[anderson at skyweb.co.ke]

Hi all,

I just recently began using HTB to try and manage bandwidth for my network.
This is the script I'm using:

/sbin/iptables -t mangle -A FORWARD -o eth1 -s ! 192.168.244.2 -j MARK --set-mark 53

tc qdisc add dev eth1 root handle 1: htb default 20

tc class add dev eth1 parent 1: classid 1:1 htb rate 100mbit burst 131072k quantum 59000

tc class add dev eth1 parent 1:1 classid 1:10 htb rate 64kbit quantum 1501
tc class add dev eth1 parent 1:1 classid 1:20 htb rate 1kbit ceil 100mbit burst 131072k quantum 1600

tc qdisc add dev eth1 parent 1:10 handle 10: sfq perturb 10
tc qdisc add dev eth1 parent 1:20 handle 20: sfq perturb 10

tc filter add dev eth1 protocol ip parent 1:0 prio 1 handle 53 fw flowid 1:10

The problem is I often find the rate exceeding the ceil which is 64kbit for 1:10 when I ran this
command:
	
		tc -s show class dev eth1

I'm also using a script that captures the output of the above command and
feeds it to rrdtool to plot a graph of the usage and it also shows that the
bandwidth being utilised exceeds 64kbit.

How can ensure that this doesn't happen? Where did I go wrong with my
config?

Any help would be appreciated.


Thanks.