[LARTC] ADSL/Ethernet differentiation

[LARTC] ADSL/Ethernet differentiation

[tc]

Hi all,

I am new to traffic management and I am having some difficulty working out
how to differentiate between my ADSL link and LAN.

Background: I recently purchased an "Audiotron", which is a networked device
that allows me to play MP3's over my LAN and also allows me to listen to
Internet Radio, through my ADSL link (512Kb/s) and then over the LAN.
I discovered, however, that when I am doing large downloads, the Internet
Radio on the Audiotron suffers (no bandwidth), so I have started looking
into traffic shaping.
Seeing as I am doing this, I decided that I would also like to give priority
to web, news and mail, over any other service, so that large FTP downloads
would not affect web browsing speed.
My LAN consists of a Linux box with a USB ADSL modem (ppp) and a 100Mb/s
network card (eth0). The other machines on my network are all 100Mb/s

To sum it up simply: Top priority is Audiotron, which should never take up
ALL of the bandwidth (it should never need to), but I would like it to have
256 Kb/s if needed.
Next up is web, news and mail, which should take priority over everything
else, so I reckon 248Kb/s, leaving 8Kb/s for the rest (which will borrow
from the others alot :)

I have read the documentation and I think that the rules included at the
bottom of this email should work. However, I am not sure whether this would
also restrict the bandwidth between machines, which I would like to remain
at 100Mb/s.

I would appreciate opinions from more experienced people as to how I can
manage this. Also, if there are any flaws (read: stupid mistakes) in my
rules, I would appreciate comments!

Cheers,

Ben

Rules:

# Add HTB as the queue discipline on eth0.
tc qdisc add dev eth0 root handle 1: htb default 20

# Add a root class rated at 512kbit (the speed of my adsl downloads)
tc class add dev eth0 parent 1: classid 1:1 htb rate 512kbit burst 2k

# Add a class with a guaranteed rate of 256kbit and ceiling of 512kbit for
the Audiotron
tc class add dev eth0 parent 1:1 classid 1:10 htb rate 256kbit ceil 512kbit
burst 2k

# Add a class for all web, news and mail traffic, rated at 248kbit with
512kbit ceiling
tc class add dev eth0 parent 1:1 classid 1:15 htb rate 248kbit ceil 512kbit
burst 2k

# Add default class for all other traffic, rated at 8kbit with 512kbit
ceiling
tc class add dev eth0 parent 1:1 classid 1:20 htb rate 8kbit ceil 512kbit
burst 2k

# OK, we have our classes, now add some filters.

# First the Audiotron
tc filter add dev eth0 protocol ip parent 1: prio 1 u32 match ip dst
192.168.0.9/32 flowid 1:10

# Next for Web, News and Mail
# http/https
tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 80
0xffff flowid 1:15
tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 443
0xffff flowid 1:15
# pop3/smtp
tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 25
0xffff flowid 1:15
tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 110
0xffff flowid 1:15

# news/home news
tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 119
0xffff flowid 1:15

# Everything else comes under the default.
tc filter add dev eth0 protocol ip parent 1: prio 3 flowid 1:20


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Re: [LARTC] ADSL/Ethernet differentiation

[Stef Coene]

On Monday 28 January 2002 00:35, tc@bens-house.org.uk wrote:
> Hi all,
>
> I am new to traffic management and I am having some difficulty working out
> how to differentiate between my ADSL link and LAN.
>
> Background: I recently purchased an "Audiotron", which is a networked
> device that allows me to play MP3's over my LAN and also allows me to
> listen to Internet Radio, through my ADSL link (512Kb/s) and then over the
> LAN. I discovered, however, that when I am doing large downloads, the
> Internet Radio on the Audiotron suffers (no bandwidth), so I have started
> looking into traffic shaping.
> Seeing as I am doing this, I decided that I would also like to give
> priority to web, news and mail, over any other service, so that large FTP
> downloads would not affect web browsing speed.
> My LAN consists of a Linux box with a USB ADSL modem (ppp) and a 100Mb/s
> network card (eth0). The other machines on my network are all 100Mb/s
>
> To sum it up simply: Top priority is Audiotron, which should never take up
> ALL of the bandwidth (it should never need to), but I would like it to have
> 256 Kb/s if needed.
> Next up is web, news and mail, which should take priority over everything
> else, so I reckon 248Kb/s, leaving 8Kb/s for the rest (which will borrow
> from the others alot :)
>
> I have read the documentation and I think that the rules included at the
> bottom of this email should work. However, I am not sure whether this would
> also restrict the bandwidth between machines, which I would like to remain
> at 100Mb/s.
>
> I would appreciate opinions from more experienced people as to how I can
> manage this. Also, if there are any flaws (read: stupid mistakes) in my
> rules, I would appreciate comments!
The script is OK, except :
The last filter is not needed since all not-matched packets will ended up in 
1:20 by default (you specified this when you added the qdisc).
Is this script for the internet NIC or for the LAN NIC?  
If it's for the LAN nic, you will end up with all traffic (also LAN) traffic 
bounded to 512 kbit.  Solution : create an extra class with 2 subclasses.  
Put all LAN traffic in the first class and all internet traffic in the other. 
 Give the second class a bounded rate of 512 kbit and attach all the other 
classes to this class.  And the filter uses dport.  But you have to use sport.

>
> Cheers,
>
> Ben
>
> Rules:
>
> # Add HTB as the queue discipline on eth0.
> tc qdisc add dev eth0 root handle 1: htb default 20
>
> # Add a root class rated at 512kbit (the speed of my adsl downloads)
> tc class add dev eth0 parent 1: classid 1:1 htb rate 512kbit burst 2k
>
> # Add a class with a guaranteed rate of 256kbit and ceiling of 512kbit for
> the Audiotron
> tc class add dev eth0 parent 1:1 classid 1:10 htb rate 256kbit ceil 512kbit
> burst 2k
>
> # Add a class for all web, news and mail traffic, rated at 248kbit with
> 512kbit ceiling
> tc class add dev eth0 parent 1:1 classid 1:15 htb rate 248kbit ceil 512kbit
> burst 2k
>
> # Add default class for all other traffic, rated at 8kbit with 512kbit
> ceiling
> tc class add dev eth0 parent 1:1 classid 1:20 htb rate 8kbit ceil 512kbit
> burst 2k
>
> # OK, we have our classes, now add some filters.
>
> # First the Audiotron
> tc filter add dev eth0 protocol ip parent 1: prio 1 u32 match ip dst
> 192.168.0.9/32 flowid 1:10
>
> # Next for Web, News and Mail
> # http/https
> tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 80
> 0xffff flowid 1:15
> tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 443
> 0xffff flowid 1:15
> # pop3/smtp
> tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 25
> 0xffff flowid 1:15
> tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 110
> 0xffff flowid 1:15
>
> # news/home news
> tc filter add dev eth0 protocol ip parent 1: prio 2 u32 match ip dport 119
> 0xffff flowid 1:15
>
> # Everything else comes under the default.
> tc filter add dev eth0 protocol ip parent 1: prio 3 flowid 1:20
Not needed.  Class 1:10 wil allready contain all not matched packets.

Stef

-- 

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