Re: htb and iptables marked packets question

Linux Advanced Routing and Traffic Control

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Hi.

Felipe Ceglia wrote:
Hi folks,

I have a strange situation. When I add branches to the tree, everything goes to the default class.
The error might be obvious, but I cannot find it. I would really appreciate your help.

I think it's the expected behaviour.


this works, nothing goes to "1:9999":

perhaps all the traffic you generate to test was marked by the iptables rules and then classified by that.
btw in this order the rule for 192.168.200.0/24 never matches, because the rule for 192.168.0.0/16 matches always first.


#############################################################################

/sbin/iptables -F -t mangle
/sbin/tc qdisc del dev eth1 root > /dev/null 2>&1
/sbin/tc qdisc add dev eth1 root handle 1: htb default 9999

That's whats the default parameter is for ^^^^ Traffic not classified goes to the default.

/sbin/tc class add dev eth1 parent 1: classid 1:1 htb rate 100Mbit ceil 100Mbit
/sbin/tc class add dev eth1 parent 1:1 classid 1:9999 htb rate 128kbit
/sbin/tc class add dev eth1 parent 1:1 classid 1:4 htb rate 100Mbit
/sbin/tc class add dev eth1 parent 1:4 classid 1:28 htb rate 510kbit
#
/sbin/iptables -A POSTROUTING -o eth1 -t mangle -d 192.168.0.0/16 -j MARK --set-mark 4
/sbin/tc filter add dev eth1 protocol ip parent 1:0 prio 3 handle 4 fw flowid 1:4
#
/sbin/iptables -A POSTROUTING -o eth1 -t mangle -d 192.168.200.0/24 -j MARK --set-mark 28
/sbin/tc filter add dev eth1 protocol ip parent 1:0 prio 3 handle 28 fw flowid 1:28
#############################################################################





when I add subclasses to "1:28", traffic goes to "1:34" and "1:35", but exceeding traffic goes to "1:9999" instead of being placed at "1:28":
#############################################################################


/sbin/tc qdisc add dev eth1 root handle 1: htb default 9999

That's whats the default parameter is for ^^^^

Regards,
Francisco.
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