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===Description===
===Description===
The HTBWondershaper script implements traffic shaping by filtering outgoing traffic into classes and setting limits/priorities for these classes. Each class gets a lower and upper bandwidth limit. Each class also has a priority, and if the priority is lower, the traffic goes first.
The HTBWondershaper script implements traffic shaping/QoS by filtering outgoing traffic into classes and setting limits/priorities for these classes. Each class gets a lower and upper bandwidth limit. Each class also has a priority, and if the priority is lower, the traffic goes first. The script as designed only shapes upward (outgoing) traffic.
Design Benefits
'''Design Benefits'''
It uses HTB filter: this guarantees minimum bandwidth per class and divides surplus bandwidth evenly
It uses HTB filter - this guarantees minimum bandwidth per class and divides surplus bandwidth evenly
It uses "iptables marks" to filter traffic into classes. This means you can use the rather simple iptables language to put specific traffic into TC classes rather than the complex non-documented TC stuff.
It uses "iptables marks" to filter traffic into classes - this means you can use the rather simple iptables language to put specific traffic into TC classes rather than the complex non-documented TC stuff.
Nomenclature
'''Nomenclature'''
Shaping: The process of delaying packets before they go out to make traffic confirm to a configured maximum rate. Shaping is performed on egress (outgoing traffic). Colloquially, dropping packets to slow traffic down is also often called Shaping.
''Shaping'' - The process of delaying packets before they go out to make traffic confirm to a configured maximum rate. Shaping is performed on egress (outgoing traffic). Colloquially, dropping packets to slow traffic down is also often called Shaping.
Policing: Delaying or dropping packets in order to make traffic stay below a configured bandwidth. In Linux, policing can only drop a packet and not delay it - there is no 'ingress queue'.
''Policing'' - Delaying or dropping packets in order to make traffic stay below a configured bandwidth. In Linux, policing can only drop a packet and not delay it - there is no 'ingress queue'.
pico -w /opt/scripts/htbw/HTBWondershaper
pico -w /opt/scripts/htbw/HTBWondershaper
As a minimum adjust the variables DOWNLINK, CEIL, EXTDEV & LANDEV to suit yuour situation
As a minimum adjust the variables DOWNLINK, CEIL, EXTDEV & LANDEV to suit your situation
DOWNLINK should be your actual (not rated) download speed in Kb
DOWNLINK should be your actual (not rated) download speed in Kb
CEIL should be 75% of your actual (not rated) upstream bandwidth in Kb
CEIL should be 75% of your actual (not rated) upstream bandwidth in Kb
EXTDEV is your external internet device usually eth1
EXTDEV is your external internet device usually eth1
LANDEV is your local device usually eth0
LANDEV is your local device usually eth0
Typical settings for a "real world" ADSL connection that is 2 or 3 km from a telephone exchange
Typical settings for a "real world" ADSL connection that is 2 or 3 km from a telephone exchange
on line 99
DOWNLINK=4000
DOWNLINK=4000
on line 103
on line 103
rm /opt/scripts/htbw/HTBWondershaper
rm /opt/scripts/htbw/HTBWondershaper
Remove the starup entry from /etc/rc.d/rc.local
Remove the startup entry from /etc/rc.d/rc.local
pico -w /etc/rc.d/rc.local
pico -w /etc/rc.d/rc.local
Please read the information at the authors website http://www.hanscees.com/sme7/wondershaperbeefedup.html
Please read the information at the authors website http://www.hanscees.com/sme7/wondershaperbeefedup.html
Also read information provided in the forum posts shown in the References section for additional configuration tips.
Also read information provided in the forum posts (linked in the References section) for additional & very informative configuration & customisation tips.
http://forums.contribs.org/index.php?topic=29546.0
http://forums.contribs.org/index.php?topic=29546.0
http://forums.contribs.org/index.php?topic=29495.0
http://forums.contribs.org/index.php?topic=29495.0
http://www.hanscees.com/sme7/wondershaperbeefedup.html
http://www.hanscees.com/sme7/wondershaperbeefedup.html
http://www.hanscees.com/sme7/HTBWondershaper
http://www.hanscees.com/sme7/HTBWondershaper
http://lartc.org/
http://lartc.org/
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[[Category:Howto]]
[[Category: Administration]]
