Re: Bandwidth Management - By MAC Address

[Michele Petrazzo - Unipex srl <michele.petrazzo@unipex.it>]

Eric Estes wrote:
> I'm hoping someone could shed some light on this.
> 
> I'm trying to throttle a specific MAC Address to 200Kbits but it only
> seems to work for outgoing traffic. Can anyone see anything wrong with
> the code below?
> 

At first sight, you make a mistake here:

> /sbin/tc qdisc add dev eth1 handle 1: root htb default 1
> /sbin/tc qdisc add dev eth0 handle 1: root htb default 1

You have to add two differents handle for the incoming and outgoing data.

/sbin/tc qdisc add dev $OUT_IF handle 5: root htb default 5
/sbin/tc qdisc add dev $IN_IF handle 1: root htb default 5

/sbin/tc class add dev $OUT_IF parent 5: classid 5:1 htb rate 5320Kbit
/sbin/tc class add dev $OUT_IF parent 5: classid 5:5 htb rate 100Kbit
/sbin/tc class add dev $OUT_IF parent 5:1 classid 5:11 htb rate 200Kbit

/sbin/tc class add dev $IN_IF parent 1: classid 1:1 htb rate 5320Kbit
/sbin/tc class add dev $IN_IF parent 1: classid 1:5 htb rate 100Kbit
/sbin/tc class add dev $IN_IF parent 1:1 classid 1:11 htb rate 200Kbit

iptables -t mangle -F FORWARD -m mac --mac-source -o $OUT_IF -j CLASSIFY 
--set-class 5:11
iptables -t mangle -F FORWARD -d $PC_IP -i $IN_IF -j CLASSIFY 
--set-class 1:11

P.s. For incoming traffic you can't base your rules on the mac. See 
iptables(8)

Hope this help,
Michele