Laimis wrote:
If in one time 3 IP adresses using internet. TC script:
DEV=eth0 # LAN
SERVER_IP=192.168.1.2 # eth0 ip address
tc qdisc add dev $DEV root handle 1: htb default 255
tc class add dev $DEV parent 1: classid 1:1 htb rate 384Kbit quantum
1500
tc class add dev $DEV parent 1:1 classid 1:20 htb rate 128Kbit ceil
384Kbit prio 0 quantum 1500
tc class add dev $DEV parent 1:1 classid 1:21 htb rate 128Kbit ceil
384Kbit prio 0 quantum 1500
tc class add dev $DEV parent 1:1 classid 1:22 htb rate 128Kbit ceil
384Kbit prio 0 quantum 1500
tc qdisc add dev $DEV parent 1:20 handle 20: sfq perturb 6
tc qdisc add dev $DEV parent 1:21 handle 21: sfq perturb 6
tc qdisc add dev $DEV parent 1:22 handle 22: sfq perturb 6
tc filter add dev $DEV parent 1:0 prio 0 protocol ip handle 20 fw
flowid 1:20
tc filter add dev $DEV parent 1:0 prio 0 protocol ip handle 21 fw
flowid 1:21
tc filter add dev $DEV parent 1:0 prio 0 protocol ip handle 22 fw
flowid 1:22
iptables -t mangle -I POSTROUTING -o $DEV -s ! $SERVER_IP -d 192.168.
1.20 -j MARK --set-mark 20
iptables -t mangle -I POSTROUTING -o $DEV -s ! $SERVER_IP -d 192.168.
1.21 -j MARK --set-mark 21
iptables -t mangle -I POSTROUTING -o $DEV -s ! $SERVER_IP -d 192.168.
1.22 -j MARK --set-mark 22
If we swiched on 2 PC's (192.168.1.20 & 192.168.1.21) many p2p
programs, FTP with many conections, and on 3d PC
(192.168.1.22) FTP downloading with one conection. then 3d PC getin
less than 128kbit. If i want that all 3 PC's get
NOT LESS than 128kbit, what should I do with my script?
You need to back off from your line rates. For ingress so you can shape
at all and for egress to allow for overheads (you can get patches for
dsl overheads).
Quantum should be 1514 as you shape on eth and sfq is really meant for
bulk traffic. It would be better to mark say small tcp and udp and give
them priority with the rest going to sfq. I would also limit the length
of the sfqs default of 128 is far too long for shaping at these rates -
you want to drop packets especially for ingress.
Perturb causes packet reordering so it's best set higher than 6 - I use 20.
Andy.
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