Re: [LARTC] basic htb setup

From: Stef Coene <stef.coene@docum.org>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] basic htb setup
Date: Thu, 28 Feb 2002 09:04:36 +0000	[thread overview]
Message-ID: <marc-lartc-101488724706487@msgid-missing> (raw)
In-Reply-To: <marc-lartc-101486691503767@msgid-missing>

On Thursday 28 February 2002 04:25, Ben wrote:
> Hey all. I'm trying to set up QoS using the HTB qdisc in a very basic
> setup, but it the example shown in the howto doesn't seem to be working.
> While the packets show up in the correct classes, they appear to be
> completely ignoring the rates, meaning nothing gets shaped.
>
> My setup is that I've got a a bunch of machines behind my firewall/router:
>
>
> 1.2.3.1      +----------------------------+    10.0.0.1
> 1.2.3.2 -----+eth0  firewall/router   eth1+--- 10.0.0.2
> 1.2.3.3      +----------------------------+    10.0.0.3
>
>
> 10.0.0.1 is nat'd to 1.2.3.1, 10.0.0.2 to 1.2.3.2, etc. eth0 is attached
> to a 768Kbit DSL line, and eth1 to a 100Mb ethernet.
>
> I want to limit the output of 10.0.0.1, but let it borrow from everybody
> else's bandwidth when the bandwidth would go unused. HTB seems ideal for
> this, and the TC stuff is pretty much identical to the basic one in the
> howto:
>
> tc qdisc add dev eth0 handle 1: root htb default 11
>
> tc class add dev eth0 parent 1: classid 1:1 htb rate 768kbit ceil 768kbit
> burst 15k tc class add dev eth0 parent 1:1 classid 1:10 htb rate 160kbit
> ceil 768kbit burst 15k tc class add dev eth0 parent 1:1 classid 1:11 htb
> rate 608kbit ceil 768kbit burst 15k
>
> tc qdisc add dev eth0 parent 1:10 handle 10: sfq perturb 10
> tc qdisc add dev eth0 parent 1:11 handle 10: sfq perturb 10
You use twice handle 10:.  Typo ?

>
> tc filter add dev eth0 protocol ip parent 1:0 prio 1 u32 match ip src
> 1.2.3.1 flowid 1:10
>
>
> When I start sucking a lot of data from 10.0.0.1 and 10.0.0.2 from outside
> the firewall, the packets end up in the correct classes (judging by tc -s
> -d show dev eth0). But they also are processed at equal rates, not at the
> 160:608 ratio I've specified.
Do you use the full 768kbit ?
When you do tc -s -d class show dev eth0, do you see any packets in class 
1:11? 
Or better, post the output of that command.

Stef

-- 

stef.coene@docum.org
 More QOS info : http://www.docum.org/
 Title : "Using Linux as bandwidth manager"
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