[LARTC] htb traffic shaping problem

[Bugzilla-Redirect <bugzilla@sysreset.com>]

Hello.
I have a linux server connected to a gigabit lan, and though that lan to a 
768kbps/768kbps DSL modem.

I'm trying to shape my webserver running on port 80/443 down to 512kbps, 
while leaving all other ports alone.  The current configuration script that 
I'm using is as follows:
tc qdisc del dev eth0 root
tc qdisc add dev eth0 root handle 1: htb default 99
tc class add dev eth0 parent 1: classid 1:1 htb rate 1000mbit ceil 1000mbit
tc class add dev eth0 parent 1:1 classid 1:10 htb rate 512kbit ceil 512kbit
tc qdisc add dev eth0 parent 1:10 handle 10: sfq
tc class add dev eth0 parent 1:1 classid 1:99 htb rate 900mbit ceil 1000mbit
tc qdisc add dev eth0 parent 1:99 handle 99: sfq
tc filter add dev eth0 protocol ip parent 1: u32 match ip sport 80 0xffff 
flowid 1:10
tc filter add dev eth0 protocol ip parent 1: u32 match ip sport 443 0xffff 
flowid 1:10

1:10 seems to be getting the correct traffic from port 80 and 443 while 
everything else is run to 1:99.  The problem is that, while 1:10 is slowing 
the connection down to a degree, it's nowhere near the set limit.  For 
example: the connection will start out around 50kBps, and then suddenly 
bounce to over 1MBps, far exceeding it's 64kBps setting.

Setting the parent down to 512kbits seems to work correctly, but it 
cripples the local network.

Can anyone point out what I've done incorrectly, or is this a bug?
Thank you.

-Ryan Power 

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