Configuring Traffic Prioritization - Weidmuller IE-SW-VL08M Series User Manual

IE-SW-VL08M Series User's Manual

Configuring Traffic Prioritization

QoS Classification
The IE-SW-VL08M 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 IE-SW-VL08M shows
8 ports.)
Queuing Mechanism
Setting
Weighted Fair
Strict
Inspect TOS
Setting
Enable/Disable
Description
The Ethernet 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.
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.
Description
Select this setting to enable the IE-SW-VL08M to
inspect the Type of Service (TOS) bits in IPV4 frame
to determine the priority of each frame.
3-44
Featured Functions
Factory Default
Weight Fair
Factory Default
Enable