QoS Traffic Shaping Basic Configuration

About this task

The WiNG software uses different Quality of Service (QoS) screens to define WLAN and device radio QoS configurations. The System Profiles → Network → QoS facility is separate from WLAN and radio QoS configurations, and is used to configure the priority of the different DSCP packet types.

QoS values are required to provide service priority to packets. For example, VoIP packets get higher priority than data packets to provide a better quality of service for high priority voice traffic.

The profile QoS screen maps the 6-bit Differentiated Service Code Point (DSCP) code points to the older 3-bit IP Precedent field located in the Type of Service byte of an IP header. DSCP is a protocol for specifying and controlling network traffic by class so that certain traffic types get precedence. DSCP specifies a specific per-hop behavior that is applied to a packet.

To define an QoS configuration for DSCP mappings:

Procedure

Go to Configuration → Devices → System Profile.
Expand Network and select Quality of Service (QoS).

The Traffic Shaping → Basic Configuration screen displays by default.

QoS - Traffic Shaping - Basic Configuration Screen
Select Enable to provide traffic shaping using the defined bandwidth, rate and class mappings.

Apply traffic shaping to specific applications to apply application categories. When application and ACL rules are conflicting, applications have priority, followed by application categories, then ACLs.
Set the Total Bandwidth configurable for the traffic shaper. Set the value from either 1 - 1,000 Mbps, or from 250 - 1,000,000 Kbps.
Select + Add Row within the Rate Configuration table to set the Class Index (1 - 4) and Rate (in either Kbps, Mbps or percentage) for the traffic shaper class. Use the rate configuration to control the maximum traffic rate sent or received on the device. Consider this form of rate limiting on interfaces at the edge of a network to limit traffic into or out of the network. Traffic within the set limit is sent and traffic exceeding the set limit is dropped or sent with a different priority.
Refer to the IP ACL Class Mapping table and select + Add Row to apply an IPv4 formatted ACL to the shaper class mapping. Select + Add Row to add mappings.
Refer to the IPv6 ACL Class Mapping table and select + Add Row to apply an IPv6 formatted ACL to the shaper class mapping. Select + Add Row to add mappings.

Note

For more information on creating IP based firewall rules, refer to Configuring IP Firewall Rules and Setting an IPv4 or IPv6 Firewall Policy.
Refer to the App-Category to Class Mapping table and select + Add Row to apply an application category to shaper class mapping. Select + Add Row to add mappings by selecting the application category and its traffic shaper class. For more information on creating an application category, refer to Create a Custom Application Definition.
Refer to the Application to Class Mapping table and select + Add Row to apply an application to shaper class mapping. Select + Add Row to add mappings by selecting the application and its traffic shaper class. For more information on creating an application, refer to Create a Custom Application Definition.
Select the OK button to save the traffic shaping basic configuration changes.

Select Reset to revert to the last saved configuration.