Quality of Service (QoS) in detail
Firmware version x.95 and later have granted the Deliberant APC series of devices QoS functionality for the iPoll proprietary protocol. It is a major improvement in the quality control applicable to the different kinds of traffic.
QoS allows users to adjust the distribution of the 4 different types of traffic. The process places the data into 4 queues that are then processed based on their priority levels. The prioritization policy is strict, which means that higher-priority data is sent first and lower priority is sent afterwards. Packets are prioritized using VLAN/CoS (layer 2) or IP/ToS/DSCP (layer 3) marks.
QoS allows LigoWave’s customers to provide higher-quality services with multiple types of traffic (data, voice, video, etc.) on the same network.
Figure 1. QoS graph
QoS can be adjusted using three sliders for the different kinds of traffic: voice, video, and best effort.
Voice traffic has the highest priority and will always be added to the queue first. Background traffic, which is without priority (priority 0) by default, is adjusted according to your preferences applicable to the other kinds of traffic. The background traffic margin is controlled by an algorithm that takes into account both the CPE currently connected to the access point and the current link capacity. The algorithm also automatically adjusts the values in accordance with the changing environments and user increase or decrease probability. The main control window is displayed in the picture below:
Figure 2. QoS control window
QoS is controlled over the access point, after which the settings are applied to all connected CPE.