MT-Rate-Limit - Datarate limitation for clients. Format is: rx-rate[/tx-rate] [rx-burst-rate[/tx-burst-rate] [rx-burst-threshold[/tx-burst-threshold] [rx-burst-time[/tx-burst-time] [priority] [rx-rate-min[/tx-rate-min]]]] from the point of view of the router (so "rx" is client upload, and "tx" is client download). All rates should be numbers with optional 'k' (1,000s) or 'M' (1,000,000s). If tx-rate is not specified, rx-rate is as tx-rate too. Same goes for tx-burst-rate and tx-burst-threshold and tx-burst-time. If both rx-burst-threshold and tx-burst-threshold are not specified (but burst-rate is specified), rx-rate and tx-rate is used as burst thresholds. If both rx-burst-time and tx-burst-time are not specified, 1s is used as default. Priority takes values 1..8, where 1 implies the highest priority, but 8 - the lowest. If rx-rate-min and tx-rate-min are not specified rx-rate and tx-rate values are used. The rx-rate-min and tx-rate-min values can not exceed rx-rate and tx-rate values.
Rate-Limit takes precedence over all other ways to specify data rate for the client. Ascend data rate attributes are considered second; and WISPr attributes takes the last precedence.
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Here are some Rate-Limit examples(部分限速模板):
128k - rx-rate=128000, tx-rate=128000 (无突发限速)
64k/128M - rx-rate=64000, tx-rate=128000000（无突发限速）
64k 256k - rx/tx-rate=64000, rx/tx-burst-rate=256000, rx/tx-burst-threshold=64000, rx/tx-burst-time=1s （突发事件1S）
64k/64k 256k/256k 128k/128k 10/10 - rx/tx-rate=64000, rx/tx-burst-rate=256000, rx/tx-burst-threshold=128000, rx/tx-burst-time=10s
Radius Rate-Limit / Mikrotik Simple Queue
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tx/rx speed = Max Limit
tx/rx speed = Limit At
Burst Limit tx/rx = Burst Limit
Burst Threshold tx/rx = Burst Threshold (触发突发限速的临界值)
Burst Time = Burst Time 突发限速
max-limit------我们最常用的地方，最大速度
burst-limit--------突破速度的最大值
burst-thershold--------突破速度的阀值
burst-time-------突破速度的时间值
解释限制意义
当客户机在30秒（burst-time）内的平均值小于突破速度阀值（burst-thershold）180K时，客户机的最大下载速率可以超过最大限速值（max-limit）200K，达到突破最大值（burst-limit）400K，如果30秒内平均值大于180K，那客户机的最大速度只能达到200K。
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The value for my test user is the follow: 512k/2048k 512k/2048k 192k/960k 8/8 1 128k/128k
The mikrotik documentation say:
"Mikrotik-Rate-Limit - Datarate limitation for clients. Format is: rx-rate[/tx-rate] [rx-burst-rate[/tx-burst-rate] [rx-burst-threshold[/tx-burst-threshold] [rx-burst-time[/tx-burst-time] [priority] [rx-rate-min[/tx-rate-min]]]] from the point of view of the router (so "rx" is client upload, and "tx" is client download). All rates should be numbers with optional 'k' (1,000s) or 'M' (1,000,000s). If tx-rate is not specified, rx-rate is as tx-rate too. Same goes for tx-burst-rate and tx-burst-threshold and tx-burst-time. If both rx-burst-threshold and tx-burst-threshold are not specified (but burst-rate is specified), rx-rate and tx-rate is used as burst thresholds. If both rx-burst-time and tx-burst-time are not specified, 1s is used as default. Priority takes values 1..8, where 1 implies the highest priority, but 8 - the lowest. If rx-rate-min and tx-rate-min are not specified rx-rate and tx-rate values are used. The rx-rate-min and tx-rate-min values can not exceed rx-rate and tx-rate values."
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