Hi Carlos,

Try HTB. It is better than CBQ, requires less CPU and have a better help:

http://luxik.cdi.cz/~devik/qos/htb/

Daniel

Carlos Arnt wrote:

Hi all,

 

Reading about CBQ on internet i can say "I dont understand well"  ;)

So anyone that has a good background can help me out with this simple question ?

 

I just want priorize my UDP packets to always has 90% of my link when use a VOIP

connection with asterisk.

 

My asterisk run in the same machine then my firewall.

 

How then can i :

 

1 - Mark the packets with iptables then i will know TCP and UDP packets then come in and out

2 - Use CBQ to put a prio=1 in the UDP Packets then i will always know that when a VOIP conn start will

always have the best rate of my link.

 

I think i know how mark the packets with the Iptables.

 

iptables -t mangle -A PREROUTING -p tcp -j MARK --set-mark 9000

iptables -t mangle -A PREROUTING -p udp -j MARK --set-mark 9002

 

and

 

iptables -t mangle -A OUTPUT -p tcp -j MARK --set-mark 9001

iptables -t mangle -A OUTPUT -p udp -j MARK --set-mark 9003

 

I think that i mark all UDP and TCP packets.

 

So i just need use a CBQ RUle (Now it's the worst)

Honestly i dont know ..

 

So let's see.

 

DEVICE=eth0,10Mbit,1Mbit

RATE=112Kbit

WEIGHT=1Kbit

MARK=9000

 

etc etc

 

I use an 256kbits(Down) - 128Kbits(Up) ADSL connection

 

Then i have PPP0 and my eth1 for my internet net.

 

Just need put the best priority to all UDP Packets forcing the rest of services like

SMTP/POP3./HTTP etc that use TCP in the low priority

 

Can anyone help me ? Because i think my Voip has a poor quality because this (Heavy use of mail and http services).

 

Thanks alot for helping out.

 

Carlos

 

 

I

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