Figure 4.88 Qos > General > Qos Scheduling - Advantech EKI-7428 Series User Manual

The following table describes the items in the previous figure.
Item
Port
CoS Value
Remark CoS
Remark DSCP
Remark IP
Precedence
Apply
The ensuing table for QoS Status settings are informational only: Port, CoS value,
Remark CoS, Remark DSCP and Remark IP Precedence.
4.8.1.3 Queue Scheduling
The switch support eight CoS queues for each egress port. For each of the eight
queues, two types of scheduling can be configured: Strict Priority and Weighted
Round Robin (WRR).
Strict Priority scheduling is based on the priority of queues. Packets in a high-priority
queue are always sent first and packets in a low-priority queue are only sent after all
the high priority queues are empty.
Weighted RoundRobin (WRR) scheduling is based on the user priority specification
to indicate the importance (weight) of the queue relative to the other CoS queues.
WRR scheduling prevents low-priority queues from being completely ignored during
periods of high priority traffic. The WRR scheduler sends some packets from each
queue in turn.
To access this page, click QoS > General > QoS Scheduling.
EKI-7428 Series User Manual
Description
Enter the port number to associate with the QoS setting.
Click the drop-down menu to designate the Class of Service (CoS)
value (0 to 7) for the Port entry.
Click Disabled or Enabled to setup the Remark CoS function. When
enabled the LAN (preassigned priority values) is marked at Layer 2
boundary to CoS values.
Click Disabled or Enabled to setup the DSCP remark option for the
QoS function.
Click Disabled or Enabled to setup the Remark IP Precedence for
the QoS function.
Click Apply to save the values and update the screen.
Figure 4.88 QoS > General > QoS Scheduling
88