Configuring Access Point Services; Configuring Quality Of Service (Qos); Understanding Qos - D-Link DWL-3500AP - AirPremier Wireless Switching 108G Access Point Administrator's Manual

Configuring Access Point Services

This chapter describes how to configure services on the DWL-3500AP and DWL-8500AP and
contains the following sections:
•

Configuring Quality of Service (QoS)

• Enabling the Network Time Protocol Server
Configuring Quality of Service (QoS)
Quality of Service (QoS) provides you with the ability to specify parameters on multiple
queues for increased throughput and better performance of differentiated wireless traffic like
Voice-over-IP (VoIP), other types of audio, video, and streaming media as well as traditional
IP data over the Unified Access Point.

Understanding QoS

A primary factor that affects QoS is network congestion due to an increased number of clients
attempting to access the air waves and higher traffic volume competing for bandwidth during a
busy time of day. The most noticeable degradation in service on a busy, overloaded network
will be evident in time-sensitive applications like Video, Voice-over-IP (VoIP), and streaming
media.
Unlike typical data files which are less affected by variability in QoS, Video, VoIP and
streaming media must be sent in a specific order at a consistent rate and with minimum delay
between packet transmission. If the quality of service is compromised, the audio or video will
be distorted.
QoS and Load Balancing
By using a combination of load balancing (see
QoS techniques, you can provide a high quality of service for time-sensitive applications even
on a busy network. Load balancing sets thresholds for client associations and AP utilization.
QoS is a means of allocating bandwidth and network access based on transmission priorities
for different types of wireless traffic within a single access point.
"Configuring Load Balancing"
Configuring Quality of Service (QoS)
6
on page 68) and
69