Moxa Technologies EDS-405A User Manual

Page of 82
EDS-408A/405A Series User’s Manual 
Featured Functions 
 
3-38
Configuring Traffic Prioritization 
QoS Classification 
 
The EDS supports inspection of layer 3 TOS and/or layer 2 QoS tag information to determine how 
to classify traffic packets. (NOTE: The user interface for the EDS-408A shows 8 ports.) 
Queuing Mechanism 
Setting 
Description 
Factory Default 
Weighted Fair 
The EDS-408A/405A 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. 
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 all high priority frames to egress the switch as 
soon as possible. 
Weight Fair 
Inspect TOS 
Setting 
Description 
Factory Default 
Enable/Disable 
Select this setting to enable the EDS-408A/405A to 
inspect the Type of Service (TOS) bits in IPV4 frame 
to determine the priority of each frame. 
Enable