[LARTC] Re: HTB and metro+int. limits

["Alex" <alex@hostingcenter.ro>]

Thanks for your replay, it really helps, but to take the question further,
from what you have seen in my sample script, how should I classify packets
with "tc" ? I don't know  how to put them in separate classes,. What I have
in my script will only shape metro traffic, but for international how would
the "tc" command be?
Something like:
/sbin/tc class add dev eth2 parent 1:2 classid 2:11 htb rate 50kbit ceil
100kbit prio 5
/sbin/tc filter add dev eth2 parent 1:0 protocol ip prio 5 u32 match ip dst
192.168.254.10 flowid 1:11
Would this be the correct commands?

Thanks again.

Alex
---begin my script----
sbin/tc qdisc add dev eth2 root handle 1: htb default 10
/sbin/tc class add dev eth2 parent 1: classid 1:1 htb rate 10M
#metro
/sbin/tc class add dev eth2 parent 1:1 classid 1:10 htb rate 10M
/sbin/tc filter add dev eth2 protocol ip parent 1:10 prio 3 handle 6 flowid
1:10
#international
/sbin/tc class add dev eth2 parent 1:1 classid 1:2 htb rate 10M
/sbin/tc filter add dev eth2 protocol ip parent 1:10 prio 3 handle 5 flowid
1:2

/sbin/tc class add dev eth2 parent 1:1 classid 1:11 htb rate 50kbit ceil
100kbit prio 5
/sbin/tc filter add dev eth2 parent 1:0 protocol ip prio 5 u32 match ip dst
192.168.254.10 flowid 1:11

/sbin/tc class add dev eth2 parent 1:1 classid 1:12 htb rate 50kbit ceil
100kbit prio 5
/sbin/tc filter add dev eth2 parent 1:0 protocol ip prio 5 u32 match ip dst
192.168.254.11 flowid 1:12
....etc
--end--
----- Original Message ----- 
From: <cmulcahy@avesi.com>
To: "Alex" <alex@hostingcenter.ro>
Sent: Tuesday, September 30, 2003 9:07 PM
Subject: Re: HTB and metro+int. limits


> Alex
>
> Alex writes:
>
> > Hello,
> > I need to setup HTB to limit the bandwidth, but I need to have 2 types
of
> > limits, because my ISP gives me more bandwith for sites located in my
> > country, than others located outside. I have setup the following script
in
> > which I mark packets with mark 6 for the ip clasess for the sites in my
> > country. What I don't know is how to continue the script with assigning
> > lower limits to everything else not going from ip's in --set-mark 6.
> > Maybe some of can enlighten me about this.
> > Thanks,
> >
> > Alex
> >
> <snip>
> ......
> > /sbin/iptables -t mangle -A PREROUTING -i eth2 -d 193.231.15.0/24 -j
> > MARK --set-mark 6
> > #end metro
> > #
> > #2. Anything else
> > /sbin/iptables -t mangle -A PREROUTING -i eth2 -d 0/0 -j MARK --set-mark
5
>
> </snip>
>
> This will not differentiate your traffic.  Everything "-i eth2" will end
up
> marked '5' because iptables will evaluate against every rule in order,
> eventually marking them '5' whether they have previously been marked '6'
or
> not.
>
> You need to create a new table with two commands for each address range.
> ie:
>
> /sbin/iptables -t mangle -N MYMARKER
> /sbin/iptables -t mangle -A PREROUTING -i eth2 -j MYMARKER
>
> # and ...
> /sbin/iptables -t mangle -A MYMARKER -d 193.231.15.0/24 -j MARK --set-mark
6
> /sbin/iptables -t mangle -A MYMARKER -d 193.231.15.0/24 -j RETURN
> # for each metro range, and finally ....
> /sbin/iptables -t mangle -A MYMARKER -j MARK --set-mark 5
> /sbin/iptables -t mangle -A MYMARKER -j RETURN
>
> The separate table and the 'RETURN' statements give you the
"short-circuit"
> evaluation you require.
>
> BTW: You might be able to consolidate your metro class-C's into fewer
> (larger) CIDR ranges to speed evaluation. ( Your upstream provider has
> likely been allocated them in this manner )
>
> mulc
>


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