Moxa Technologies 405A, EDS-408A Inspect TOS, Inspect COS, Inspect TOS, Inspect CoS, Queuing Mechanism, Default Port Priority

EDS-408A/405A Series User’s Manual				Featured Functions
	Queuing Mechanism
		Setting	Description		Factory Default
			EDS-408A/405A has 4 priority queues. In the weight
			fair scheme, an 8, 4, 2, 1 weighting is applied to the
		Weighted Fair	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
			In the Strict-priority scheme, all top-priority frames
			egress a port until that priority’s queue is empty, and
		Strict	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.
	Inspect TOS
		Setting	Description		Factory Default
		Enable/Disable	Select this setting to enable EDS-408A/405A to		Enable
			inspect the Type of Service (TOS) bits in IPV4 frame
			to determine the priority of each frame.
	Inspect COS
		Setting	Description		Factory Default
			Select this setting to enable EDS-408A/405A to
		Enable/Disable	inspect the 802.1p COS tag in the MAC frame to		Enable
			determine the priority of each frame.
	Default Port Priority
		Setting	Description		Factory Default
		Low/Normal/	Set the Port Default Priority of the ingress frames to
			different priority queues. If the received packets are		Normal
		Medium/High	not equipped with any tag information (CoS, TOS) the
			default port priority will take effect.
NOTE	The priority of an ingress frame is determined in order by:
	1.	Inspect TOS
	2.	Inspect CoS
	3.	Default Port Priority
NOTE	The designer can enable these classifications individually or in combination. For instance, if a
	‘hot’ higher priority port is required for a network design, Inspect TOS and Inspect CoS can be
	disabled. This setting leaves only port default priority active, which results in all ingress frames
	being assigned the same priority on that port.

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