ToughNet NAT Router User's Manual
TN-5916 Series Features and Functions
3-23
QoS
QoS Classification
The Moxa switch supports inspection of layer 3 ToS and/or layer 2 CoS tag information to determine how to
classify traffic packets.
Scheduling Mechanism
Setting
Description
Factory Default
Weight Fair
The Moxa ToughNet NAT Router 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 queue is empty, and then the next
lower priority queue’s frames egress. This approach can cause
the lower priorities to be starved of opportunity for transmitting
any frames but ensures that all high priority frames will egress
the switch as soon as possible.
Inspect ToS
Setting
Description
Factory Default
Enable/Disable
Enables or disables the Moxa ToughNet NAT Router for
inspecting Type of Service (ToS) bits in the IPV4 frame to
determine the priority of each frame.
Enabled
Inspect COS
Setting
Description
Factory Default
Enable/Disable
Enables or disables the Moxa ToughNet NAT Router for
inspecting 802.1p CoS tags in the MAC frame to determine the
priority of each frame.
Enabled
Port Priority
Setting
Description
Factory Default
Port priority
The port priority has 4 priority queues. Low, normal, medium,
high priority queue option is applied to each port.
3(Normal)
