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From: Andy Furniss <andy.furniss@dsl.pipex.com>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] packet shaping bridge
Date: Thu, 05 May 2005 22:51:28 +0000	[thread overview]
Message-ID: <427AA370.8000108@dsl.pipex.com> (raw)
In-Reply-To: <427A4932.7000002@ckua.org>

Jason Bath wrote:

> I'm currently tweaking but this is what I have for now:
> -----------------------
> #!/bin/sh
> 
> DEV=eth0
> #setup the root
> 
> #tc qdisc add dev $DEV root handle 1: htb default 11

Remember arp traffic will go to default unless you filter elsewhere.

> tc class add dev $DEV parent 1: classid 1:1 htb rate 100kbps ceil 100kbps
> #Tokyo class
> tc class add dev $DEV parent 1:1 classid 1:10 htb rate 50kbps ceil 100kbps

I would use rate 90 ceil 100 prio 0

> #Everything else
> tc class add dev $DEV parent 1:1 classid 1:11 htb rate 50kbps ceil 100kbps

rate 10 ceil 100 prio 1 quantum 1500 (or your mtu) burst 10b cburst 10b

> 
> #filter for streaming
> tc filter add dev $DEV parent 1:1 protocol ip prio 0 u32 match ip src 
> 10.2.1.7 match ip dport 2001 0xffff flowid 1:10

Filters don't work as you need to add them to 1:0 also prio 0 is not 
highest for a filter - use 1

> tc filter add dev $DEV protocol ip parent 1:1 prio 0 u32 match ip src 
> 10.2.1.5 match ip dport 2001 0xffff flowid 1:10
> 
> #filter for my workstation
> tc filter add dev $DEV protocol ip parent 1:1 prio 3 u32 match ip src 
> 10.2.1.251 flowid 1:10

If your workstation generates bulk traffic don't put it with stream - 
make another class.

> 
> #all other traffic sent to the other queue
> tc filter add dev $DEV protocol ip parent 1:1 prio 3 u32 match ip src 
> 0.0.0.0/0 flowid 1:11

Not really needed if you use default 11 but remember arp - if you omit 
default 11 then leave this and arp will pass unshaped.


> tc qdisc add dev $DEV parent 1:10 handle 10: pfifo limit 2

two packets seems a bit low - maybe use a short bfifo to limit to a 
couple big packets (3k) but still allow more small.

> tc qdisc add dev $DEV parent 1:11 handle 11: sfq perturb 2

perturb causes packet reordering 2 is too low use min 10 or higher.

Andy.
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  parent reply	other threads:[~2005-05-05 22:51 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-05 16:26 [LARTC] packet shaping bridge Jason Bath
2005-05-05 21:58 ` Jason Bath
2005-05-05 22:20 ` Andreas Klauer
2005-05-05 22:51 ` Andy Furniss [this message]
2005-05-06 17:49 ` Jason Bath
2005-05-09 22:26 ` Andy Furniss

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