Appendix 6: Qos Settings - Acuity Brands Lighting Pathway VIA 12 Series User Manual

APPENDIX 6: QoS SETTINGS

Quality of Service priorities are determined by the Differentiated Services Code Point (DSCP) field contained in each data packet
header. DSCP values may range from 1 to 64, and are mapped to four egress (output) queues. The egress queues are, in turn,
numbered from 1 (Best Effort) to 4 (Highest Priority).
The DSCP mappings and related QoS settings used by VIA switches is shown in the following table:
QoS Setting
Disabled (default)
QoS Standard
Dante Strict
71
Disables QoS-based routing. All traffic is treated equally.
Queue 1: DSCP values 1-16
Queue 2: DSCP values 17-32
Queue 3: DSCP values 33-48
Queue 4: DSCP values 49-64
A weighted fair queuing algorithm is used to prevent the starvation of lower queues by
higher priority traffic.
Queue 1: All DSCP values except:
Queue 2: DSCP 8
Queue 3: DSCP 46
Queue 4: DSCP 56
Queue 3 and 4 are handled by strict priority, while the two lower queues are handled
by the weighted algorithm.
VIA12 [6750, 6750-P, 6752-P, 6754-P] - Manual
Description
REV 1.0 • June 2020