Moxa Managed Ethernet Switch (UI_2.0_FW_5.x) User Manual
Configuring Traffic Prioritization
Quality of Service (QoS) provides a traf f ic prioritization capability to ensure that important data is delivered
consistently and predictably. The Moxa switch can inspect IEEE 802.1p/1Q layer 2 CoS tags, and even layer
3 TOS inf ormation, to provide a consistent classif ication of the entire network. The Moxa switch’s QoS
capability improves your industrial network’s perf ormance and determinism f or mission critical applications.
CoS Classification
Scheduling Mechanism
Weight Fair
The Moxa switch has 4 priority queues. In the weight f air
scheme, an 8, 4, 2, 1 weighting is applied to the f our
priorities. This approach prevents the lower priority frames
f rom being starved of opportunity f or transmission with only a
slight delay to the higher priority f rames
Weight Fair
Strict
In the Strict-priority scheme, all top-priority frames egress a
port until that priority’s frames egress. This approach can
cause the lower priorities to be starved of opportunity f or
transmitting f rames but ensures that all high priority f rames
will egress the switch as soon as possible.
TOS/DSCP Inspection
Enable/Disable
Enables or disables the Moxa switch for inspecting Type of
Server (TOS) bits in the IPV4 frame to determine the priority
Enable
COS Inspection
Enable/Disable
Enables or disables the Moxa switch for inspecting 802.1p COS
tags in the MAC frame to determine the priority of each frame.
Enable
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