CHAPTER 12
QoS
Quality of service (QoS) is used to optimize network traffic management in order to improve the user's
experience. QoS is a defined measure of performance in a communication network. It prioritizes one type of
transmission over another. QoS increases the network's ability to achieve bandwidth and deal with other
network performance elements such as latency, error rate and uptime.
QoS also involves controlling and managing network resources by setting priorities for specific type of data
(video, audio, files) on the network. It is exclusively applied to network traffic generated for video on demand,
IPTV, VoIP, streaming media, videoconferencing and on-line gaming.
This section describes the device's QoS features and contains the following topics:
• Traffic Classes, on page 109
• WAN Queuing, on page 110
• WAN Policing, on page 111
• WAN Bandwidth Management, on page 112
• Switch Classification, on page 112
• Switch Queuing, on page 113
Traffic Classes
Traffic classes allow you to classify the traffic to a desired queue based on the service. The service can be
Layer 4 TCP or UDP port application, Source or Destination IP Address, DSCP, Receive interface, OS, and
Device type. You can also rewrite the DSCP value of the incoming packets. By default, all network traffic
match the default traffic class.
To configure the Traffic Classes, follow these steps:
Step 1 Click QoS > Traffic Classes.
Step 2 In the Traffic Table, click Add (or select the row and click Edit) and enter the following:
• Class Name – Enter the name of the class.
• Description – Enter the description of the class.
• In Use – Traffic class record is being used by a queuing policy.
Step 3 In the Service Table, click Add (or select the row and click Edit) and enter the following information:
RV260x Administration Guide
109
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