Re: priorizing vlans in a bridge

Linux Advanced Routing and Traffic Control

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Hi,

You should use eth0.1 and eth0.2 in your tc statements ...

ciao

charles


On Thu, 2005-02-10 at 23:05, mschonfeld@xxxxxxxxxx wrote:
> 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.
> 
> 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
> 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
> 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.
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