Salatiel Filho wrote:
Hi Andy , thanks again , but i am not understanding very well how to
do it [still newbie in this]. Let`s try to change to some real code
here. This is part of my setup to shape download:
eth0 = EXTIF
eth1 = LOCALIF
# SHAPE DOWNLOAD to LOCALNET NOT COMING FROM THE ROUTER ITSELF [samba
for example]
iptables -t mangle -s ! 192.168.254.254 -A POSTROUTING -o eth1 -j IMQ
--todev 1
If you shape your wan - eth0 using ifb on ingress or imq from prerouting
then you do not need any rules on eth1, the wan traffic will already be
shaped.
If you do not plan on seperating users or interactive traffic from bulk
traffic, it would actually be much nicer to use a policer for ingress
wan traffic. Policing doesn't buffer traffic just drops it when a
virtual buffer is full, so you won't be delaying interactive traffic by
queuing with bulk.
When you shape ingress wan, however you do it, you will need to
sacrifice about 20% of your bandwidth, possibly more depending on
needs/traffic/wan speed. Shaping from the wrong end of the bottleneck is
better than doing nothing, but you can't do it perfectly.
tc qdisc add dev imq1 root handle 1: htb default 3 r2q 1 //
DOWNLOAD SHAPER ROOT
tc class add dev imq1 parent 1: classid 1:1 htb rate 2048kbit quantum
1500 //KNOWN TRAFFIC GOES HERE
tc class add dev imq1 parent 1: classid 1:3 htb rate 8kbit quantum
1500 // DEFAULT CLASS VERYYYYY SLOWWWWWWW
If this were eth rather than imq you would be sending arp to a slow
class - not nice.
Andy.
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