[shaper]
Accel-ppp support many ways customisation rate-limit. Also limiting clients bandwidths sometimes called as QoS (Quality of Service), but QoS has more possibilities. For enable rate-liniter, we can sets shaper in section [modules].
Config overview
- attr=name
By default:
attr=Filter-Id.Specifies which radius attribute contains rate information. RADIUS server can transmit
Filter-Id=1000, means 1000Kbit both up-stream and down-stream rate orFilter-Id=2000/3000, means 2000Kbit down-stream rate and 3000Kbit up-stream rate.- attr-up=name
By default is not defined.
Specifies which radius attribute contains rate information for upstream. Often used if needs separate upstream and downstream attributes.
- attr-down=name
By default is not defined.
Specifies which radius attribute contains rate information for downstream. Often used if needs separate upstream and downstream attributes.
- vendor=name
By default is not defined.
Specifies vendor name for support attributes of other vendors like Cisco-AVPair or Mikrotik.
Example for Cisco:
vendor=Cisco
attr=Cisco-AVPair
Example for Mikrotik:
vendor=Mikrotik
attr=Mikrotik-Rate-Limit
- burst-factor=n
By default is not defined.
Burst will be calculated as rate multiply burst-factor. Common
burst-factorfor upstream calculated asburst-factor*10.- up-burst-factor=n
By default is
up-burst-factor=1Specifies burst factor for upstream.
- down-burst-factor=n
By default is
down-burst-factor=0.1Specifies burst factor for downstream.
- cburst=n
By default is
cburst=1534Specifies amount of bytes that can be burst at ‘infinite’ speed. Recommendation: cburst should be equal to at most one average packet
- latency=n
By default is
latency=0.05Specifies latency (in milliseconds) parameter of tbf qdisc which set maximum amount of time a packet can sit in the TBF.
- mpu=n
By default is
mpu=0Specifies mpu parameter in bytes of tbf qdisc and policer. Determines the minimal token usage for a packet.
- r2q=n
By default is
r2q=10Specifies r2q parameter of root htb qdisc.
- quantum=n
By default is
quantum=1500Specifies quantum parameter of htb classes. Amount of bytes a flow is allowed to dequeue before the scheduler moves to the next class.
- moderate-quantum=1|0
By default is disabled
moderate-quantum=0If fixed quantum is not specified and this option is specified then shaper module will check for quantum value is valid (in range 1000-200000).
- fwmark=n
By default is disabled:
fwmark=0Specifies the fwmark for traffic that won’t be passed through shaper.
- up-limiter=police|htb
By default is:
up-limiter=policeSpecifes upstream rate limiting method.
- down-limiter=tbf|htb
By default is:
down-limiter=tbfSpecifies downstream rate limiting method.
- ifb=ifb_ifname
By default
ifb=ifb0Specifies name of ifb interface, used only for
up-limiter=htb- leaf-qdisc=qdisc parameters
By default is not defined.
In case if htb is used as up-limiter or down-limiter specified leaf qdisc can be attached automaticaly. At present sfq and fq_codel qdiscs are implemented. CoDel (the name comes from “controlled delay”) is Active Queue Manager. Parameters are same as for tc:
sfq [limit NUMBER] [perturb SECS] [quantum BYTES]fq_codel [limit PACKETS] [flows NUMBER] [target TIME] [interval TIME] [quantum BYTES] [[no]ecn]- rate-multiplier=n
By default is
rate-multiplier=1Due to accel-ppp operates with rates in kilobit basis if you send rates in different basis then you can use this option to bring your values to kilobits. For
vendor=Mikrotikoften setsrate-multiplier=0.001- rate-limit=downstream/upstream
By default is not defined.
Specifies default speed if there are no radius attributes.
- time-range=range_id,time_start-time_end
By default is not defined.
Specifies time ranges for automatic rate reconfiguration. You can specify multiple such options.
Configuration example:
[shaper]
time-range=1,1:00-3:00
time-range=2,3:00-5:00
time-range=3,5:00-7:00
The first number is time range identifier. To define a specific rates uses following format of radius attributes: range-id,rate, range-id,down-rate/up-rate or cisco-like.
As an example:
Filter-Id=1000
Filter-Id=1,2000
Filter-Id=2,3000
Filter-Id=3,4000
That means: set 1000Kbit by default, set 2000Kbit in time range 1, set 3000Kbit in time range 2 and set 4000Kbit in time range 3. You have to pass multiple Filter-Id attributes to utilize this functionality.