Qos, and HTB stuff... A lots of doubts

[johnny_martins00]

Hi. im trying to use Qos in a Lan, with HTB.. I have a some questions and if someone could anwser me i'll be apreciated

First of all, i have allready the classes of htb defined but my doubt is if i need to use iptables and define rules for the trafic with iptables??

Code: Select all

tc qdisc add dev eth0 parent 1:20 handle 200: sfq perturb 10

what does this command do??

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tc filter add dev etho parent 10:0 protocol ip prio 1 u32 \ match ip protocol 50 0xff  \ match ip src xxx.xxx.xxx.xxx/32 flowid 10:200

Does this command allready creats a rule and filter teh trafic???

Thk, Regards

[darken]

What do you use to create the htb classes?
I would recommend you to emerge net-misc/htbinit. When installed, it has a lot of examples.
To classify traffic, I recommend a combination of iptables and htb, using iptables to mark the packets, and use the MARK rule in htb config files.

[johnny_martins00]

Hi, thk for the reply.

I allready have my classes and subclasses defined, but im still with one question...

Whats the main diference between the tc filter command and the iptables ???
Doesnt the iptables and the tc filter marks teh packet and gives him a priority???

Thk, Regards

[darken]

The workflow is mainly this: first, you mark the packets that you want to limit the speed for with iptables, then you use the filter option from tc to associate those packets with a class that you created in advance, hence the flowid option in the filter syntax.

[johnny_martins00]

hi, thk for your reply, but doesnt the tc command, when creating class, gives the band with and the priority to the packets allready???

Thk,
Regards

[darken]

No, you have to associate to that class packets by some rule, whether it is the source ip, the port number, or the mark of the packets.