4.19 QoS
Network traffic is always unpredictable and the only basic assurance that can be offered is the best effort traffic delivery.
To overcome this challenge, Quality of Service (QoS) is applied throughout the network. This ensures that network traffic
is prioritized according to specified criteria and receives preferential treatments.
QoS enables you to assign various grades of network service to different types of traffic, such as multi-media, video,
protocol-specific, time critical, and file-backup traffic. To set up the priority of packets in this switch, go to “Port
Classification” page.
The “QoS” menu contains the following sub menus.
4.19.1 Port Classification
Port: The port number. “All” rules will apply to all ports.
QoS class: Indicate the default QoS class. A QoS class of 0 has the lowest priority. By Default, 0 is used.
DP Level: Select the default Drop Precedence Level.
PCP: Select the appropriate value for the default Priority Code Point (or User Priority) for untagged frames.
DEI: Select the appropriate value for the default Drop Eligible Indicator for untagged frames.
Tag Class: This field displays classification mode for tagged frames on this port:
Disabled: Use the default QoS class and DP level for tagged frames.
Enabled: Use the mapped versions of PCP and DEI for tagged frames.
DSCP Based: Select the checkbox to enable DSCP based QoS (Ingress Port).
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