Hi, this is my Linux Box
---------------------------- LAN 1 -----|--eth1 <---br1--->eth0.1 | | \ | | eth0--|----- 802.1q tagged 1 Mbps link | / | LAN 2 -----|--eth2 <---br2--->eth0.2 | ----------------------------
I have to bridge the 2 lans in the left side of the diagram with my linux box running as a bridge. I have to tag the traffic of each lan so I created the 2 vlans interfaces on eth0 (tag 1 and tag 2). All works fine. But now I have to priorize LAN1 traffic so it leaves the bridge before LAN2. Also I need to shape the traffic to the 1 Mbps link.
I read about the "prio" qdisc but it honours the TOS field of the IP packets, and I don't want to unless it was really necessary. I read about the "prio" option of the htb qdisc and made some scripts, but they don't work as I expected.
Prio in htb setup like this only really affects the borrowing of excess - rate is guaranteed. Also you need to back off a bit from your link speed to allow for overheads.
HTB script:
tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:1 htb rate 1000kbit
tc class add dev eth0 parent 1:1 classid 1:11 htb rate 500kbit ceil 1000kbit prio 1
I would use something like rate 850kbit ceil 900kbit here
tc filter add dev eth0 parent 1: prio 1 protocol ip handle 1 fw classid 1:11 iptables -t mangle -A PREROUTING -i eth1 -j MARK --set-mark 1
tc class add dev eth0 parent 1:1 classid 1:12 htb rate 500kbit ceil 800kbit prio 2
and rate 50kbit ceil 900kbit here.
Andy.
tc filter add dev eth0 parent 1: prio 1 protocol ip handle 2 fw classid 1:12 iptables -t mangle -A PREROUTING -i eth2 -j MARK --set-mark 2
What do you suggest me? Thanks in advance. _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
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