NL1901ACV Enhanced Hybrid 4G LTE Gateway – User Guide
UG01063 v. 1.0 December 2018
To identify the best way to configure shaping rate and burst size, consider the equation below:
Time window = Burst size / rate
For example. if a 200 Mbps bandwidth limit is configured with a 5 ms burst window, the calculation becomes 200
Mbps x 5 ms = 125 Kbytes, which is approximately eighty-three (83) 1500-byte packets. If the 200 Mbps bandwidth
limit is configured on a Gigabit Ethernet interface, the burst duration is 125000 bytes / 1 Gbps = 1 ms at the
Gigabit Ethernet line rate.
After 1ms of burst data at full gigabit speed, the speed is shaped to 200Mbps.
Figure 75 – QoS Port Shaping settings
Identifies the interface type.
Identifies the connection type.
The speed you would limit the port to in Kbps (Kilobits per second)
Burst size should be more than 10x MTU (>=15000 bytes)
button
Click to save and apply your changes
Figure 76 – Advanced – QoS – Port Shaping settings
1 byte = 8 bits