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Update qos.rst; add general example

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Add a general real-world (home-use perhaps) example of QoS with traffic prioritization by matched class.
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Matt W 2019-02-25 20:58:35 -08:00 committed by GitHub
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@ -54,6 +54,68 @@ Once a traffic-policy is created, you can apply it to an interface :
set interfaces ethernet eth0 traffic-policy in WAN-IN
set interfaces etherhet eth0 traffic-policy out WAN-OUT
A Real-World Example
^^^^^^^^^^^^^^^^^^^^
This policy sets download and upload bandwidth maximums (roughly 90% of the speeds possible), then divvies
up the traffic into buckets of importance, giving guaranteed bandwidth chunks to types of
traffic that are necessary for general interactive internet use, like web browsing, streaming, or gaming.
After identifying and prioritizing that traffic, it drops the remaining traffic into a general-priority
bucket, which it gives a lower priority than what is required for real-time use. If there is no real-time
traffic that needs the bandwidth, the lower-priority traffic can use most of the connection. This ensures
that the connection can be used fully by whatever wants it, without suffocating real-time traffic or
throttling background traffic too much.
.. code-block:: sh
set traffic-policy shaper download bandwidth '175mbit'
set traffic-policy shaper download class 10 bandwidth '10%'
set traffic-policy shaper download class 10 burst '15k'
set traffic-policy shaper download class 10 ceiling '100%'
set traffic-policy shaper download class 10 match dns ip source port '53'
set traffic-policy shaper download class 10 match icmp ip protocol 'icmp'
set traffic-policy shaper download class 10 match ssh ip source port '22'
set traffic-policy shaper download class 10 priority '5'
set traffic-policy shaper download class 10 queue-type 'fair-queue'
set traffic-policy shaper download class 20 bandwidth '10%'
set traffic-policy shaper download class 20 burst '15k'
set traffic-policy shaper download class 20 ceiling '100%'
set traffic-policy shaper download class 20 match http ip source port '80'
set traffic-policy shaper download class 20 match https ip source port '443'
set traffic-policy shaper download class 20 priority '4'
set traffic-policy shaper download class 20 queue-type 'fair-queue'
set traffic-policy shaper download default bandwidth '70%'
set traffic-policy shaper download default burst '15k'
set traffic-policy shaper download default ceiling '100%'
set traffic-policy shaper download default priority '3'
set traffic-policy shaper download default queue-type 'fair-queue'
set traffic-policy shaper upload bandwidth '18mbit'
set traffic-policy shaper upload class 2 bandwidth '10%'
set traffic-policy shaper upload class 2 burst '15k'
set traffic-policy shaper upload class 2 ceiling '100%'
set traffic-policy shaper upload class 2 match ack ip tcp ack
set traffic-policy shaper upload class 2 match dns ip destination port '53'
set traffic-policy shaper upload class 2 match icmp ip protocol 'icmp'
set traffic-policy shaper upload class 2 match ssh ip destination port '22'
set traffic-policy shaper upload class 2 match syn ip tcp syn
set traffic-policy shaper upload class 2 priority '5'
set traffic-policy shaper upload class 2 queue-limit '16'
set traffic-policy shaper upload class 2 queue-type 'fair-queue'
set traffic-policy shaper upload class 5 bandwidth '10%'
set traffic-policy shaper upload class 5 burst '15k'
set traffic-policy shaper upload class 5 ceiling '100%'
set traffic-policy shaper upload class 5 match http ip destination port '80'
set traffic-policy shaper upload class 5 match https ip destination port '443'
set traffic-policy shaper upload class 5 priority '4'
set traffic-policy shaper upload class 5 queue-type 'fair-queue'
set traffic-policy shaper upload default bandwidth '60%'
set traffic-policy shaper upload default burst '15k'
set traffic-policy shaper upload default ceiling '100%'
set traffic-policy shaper upload default priority '3'
set traffic-policy shaper upload default queue-type 'fair-queue'
Traffic policies in VyOS
------------------------
An overview of QoS traffic policies supported by VyOS.