User manual

C HAPTER 4 | Configuring the Switch
Quality of Service
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CONFIGURING PORT
CLASSIFICATION
Use the QoS Ingress Port Classification page to set the basic QoS
parameters for a port, including the default traffic class, DP level (IEEE
802.1p), and DSCP-based QoS classification.
PATH
Advanced Configuration, QoS, Port Classification
PARAMETERS
These parameters are displayed:
QoS Ingress Port Classification
◆ Port – Port identifier.
◆ QoS class – Controls the default QoS class, i.e., the QoS class for
frames not classified in any other way. There is a one to one mapping
between QoS class, queue and priority. A QoS class of 0 (zero) has the
lowest priority. (Range: 0-7; Default: 0)
◆ DP level – Controls the default drop priority for frames not classified in
any other way. (Range: 0-1; Default: 0)
◆ DSCP Based – Click to Enable DSCP Based QoS Ingress Port
Classification (see page 196).
WEB INTERFACE
To set the basic QoS parameters for a port:
1. Click Advanced Configuration, QoS, Port Classification.
2. Set any of the ingress port QoS classification parameters.
3. Click Save.
Figure 75: Configuring Ingress Port QoS Classification
CONFIGURING PORT
POLICIERS
Use the QoS Ingress Port Policers page to limit the bandwidth of frames
entering the ingress queue. This function allows the network manager to
control the maximum rate for traffic received on an port. Port policing is
configured on interfaces at the edge of a network to limit traffic into of the
network. Packets that exceed the acceptable amount of traffic are dropped.
Port policing can be applied to individual ports. When an port is configured
with this feature, the traffic rate will be monitored by the hardware to