3.8 QoS
Total Internet traffic has increased rapidly as the demand for mobile applications including games, messaging apps, voice
over IP, peer-to-peer file transfers and video use goes up. To enable the smooth operation of all of these services, the entire
network must ensure them via a connection service guarantee.
The main goal of QoS (Quality of Service) is prioritizing incoming data, and preventing data loss due to factors such as jitter,
delay and dropping. Another important aspect of QoS is ensuring that prioritizing one data flow doesn’t interfere with other
data flows. So, QoS helps to prioritize data as it enters your router. By attaching special identification marks or headers to
incoming packets, QoS determines which queue the packets enter, based on priority. This is useful when there are certain
types of data you want to give higher priority to, such as voice packets given higher priority than Web data packets.
To utilize your network throughput completely, the administrator must define bandwidth control rules carefully to balance
the utilization of network bandwidth for all users to access. An access gateway must satisfy the requirements of latency-
critical applications, minimum access right guarantee, fair bandwidth usage for the same subscribed condition and flexible
bandwidth management.
3.8.1 QoS Configuration
The NTC-400 Series Router provides lots of flexible rules for you to set QoS policies. You need to know who needs to be
managed, what kind of service needs to be managed and how should traffic be prioritized before you create your own
policies. Once you have this information, you can continue to learn functions in this section in more detail.
3.8.1.1 QoS Rule Configuration
To add a new QoS rule or edit an existing one, navigate to the "QoS Rule Configuration" window. The parameters in a rule
include the applied WAN interfaces, the dedicated host group based on MAC address or IP address, the dedicated kind of
service packets, the system resource to be distributed, the corresponding control function for your specified resource, the
packet flow direction, the sharing method for the control function, the integrated time schedule rule and the rule activation.
Following diagram illustrates how to organize a QoS rule.
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