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Moxa Managed Ethernet Switch (UI_2.0_FW_5.x) User Manual
70
Configuring Traffic Prioritization
Quality of Service (QoS) provides a traffic 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 information, to provide a consistent classification of the entire network. The Moxa switch’s QoS
capability improves your industrial network’s performance and determinism for mission critical applications.
CoS Classification
Scheduling Mechanism
Setting
Description
Factory Default
Weight Fair
The Moxa switch has 4 priority queues. In the weight fair
scheme, an 8, 4, 2, 1 weighting is applied to the four
priorities. This approach prevents the lower priority frames
from being starved of opportunity for transmission with only a
slight delay to the higher priority frames
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 for
transmitting frames but ensures that all high priority frames
will egress the switch as soon as possible.
TOS/DSCP Inspection
Setting
Description
Factory Default
Enable/Disable
Enables or disables the Moxa switch for inspecting Type of
Server (TOS) bits in the IPV4 frame to determine the priority
of each frame.
Enable
COS Inspection
Setting
Description
Factory Default
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