NetComm NL20MESH User Manual page 64

The above screen creates a traffic class rule to classify the upstream traffic, assign queuing priority and
optionally overwrite the IP header TOS (type of service) byte. A rule consists of a class name and at least one
condition. All of the specified conditions in this classification rule must be satisfied for the rule to take effect.
Click the Apply/Save button to save and activate the rule.
QoS Port Shaping
Port Shaping allows the limiting of continuous network speed without affecting burst traffic. For example,
when your browser loads a web page, this is a type burst traffic as the browser aims to fetch small amounts
of data quickly and then leaves the connection idle. Limiting port speed alone will affect the speed at which
web pages are loaded, causing users to feel that their overall internet connection speed is slow.
By configuring QoS Port Shaping with a Burst size, web pages are allowed to load using the burst speed,
while continuous traffic such as file downloads will be shaped at a lower rate.
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.
Wi-Fi 6 CloudMesh Hybrid Gateway – User Guide
UG01445 v1.01 27 October 2023
Figure 90 – Advanced – QoS – Network Traffic Class settings
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