Can I Restrict the Bit Rate per Device?

Yes, from the Advanced Network Settings page, you can define the maximum bit rate that is applied per device. Please note:

  • Bit rate limit is enforced per second
  • Bursts are allowed where the maximum burst size is always set to double the value of the bit rate limit (e.g. if the bit rate limit is 100 kbps the max burst size is 200 kb).

When this rate limit is configured, two parameters are set, the bit rate and burst (always double the value to the burst parameter). Short momentary bursts above bit rate will be allowed.

When a device is connected, every second, bit rate value is added to a token bucket up to a maximum of the burst value, as traffic is passing through tokens are used up from this bucket

Burst value is, therefore, the maximum amount of tokens that a device can accumulate when it is not sending any traffic. For example, if a device is not sending any traffic, it will accumulate up to burst amount of tokens and then when it starts sending data, it can use them all up, in a burst, but then if it keeps sending traffic, then it will settle at the bit rate limit.