Comtrol ES8510-XT - Manual (Page 95)

RocketLinx ES8510 and ES8510-XT User Guide: 2000513 Rev. H Traffic Prioritization - 95
Configuration Using the Web Interface
Traffic Prioritization
Quality of Service (QoS) provides a traffic prioritization mechanism which allows you to deliver better service
to certain flows. QoS can also help to alleviate congestion problems and ensure high-priority traffic is
delivered first. This section allows you to configure Traffic Prioritization settings for each port with regard to
setting priorities.
The ES8510 QoS supports four physical queues, weighted fair queuing (WRR) and Strict Priority scheme, that
follows the IEEE 802.1p CoS tag and IPv4 TOS/DiffServ information to prioritize the traffic of your industrial
network.
The following web pages are included in this group:
• QoS Setting
• CoS-Queue Mapping on Page 96
• DSCP-Queue Mapping on Page 97
Optionally, you can use the CLI for configuration, see Traffic Prioritization (CLI) on Page 163.
QoS Setting
Use this subsection to set up QoS settings for the ES8510.
QoS Setting Page
Queue Scheduling
Use an 8,4,2,1
weighted fair
queuing scheme
This is also known as WRR (Weight Round Robin). The ES8510 follows the 8:4:2:1 rate to
process the packets in a queue from the highest priority to the lowest. For example, the
system processes 8 packets with the highest priority in the queue, 4 with middle priority,
2 with low priority, and 1 with the lowest priority at the same time.
Use a strict
priority scheme Packets with higher priority in the queue are always processed first, except that there is
no packet with higher priority.