SWT
GIGABIT/FAST ETHERNET SWITCH TYPE SWT
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USER GUIDE - M0SWTA1903Iv09 - V09 March 2019
DSCP:
This section establishes the classification conditions of the frames in each one the
three existing queues according to the DSCP field value of the main IP. A discreet
value range is admitted for the DSCP field.
•
#.
This identifies the value of the DSCP field being processed.
•
Queue.
This establishes the queue priority in which the traffic coinciding with the
DSCP value indicated by the # field will be inserted. The values permitted identify
the three internal priorities:
High
,
Medium
or
Low.
QoS Port Table:
This section establishes the conditions to obtain or assign the priority to each one of the
ports.
•
#.
The physical interface identifier.
•
Priority.
Value of the priority assigned to frame 802.1 received through the
interface indicated by #. This priority is assigned when the frames received do not
include an 802.1p tag. The assigning of internal priorities is done based on the
values established in the section entitled
Priority
.
•
Use IEEE 802.1p.
The enabled option indicates that the priority field present in the
frames must be used when they include tag 802.1p. The assigning of internal
priorities is done based on the values established in the section entitled
Priority.
•
Use DSCP.
The enabled option indicates that the DSCP field of the frames
received must be processed, to assign the internal frame priority of the frame,
based on the values established in the section entitled
DSCP.
The options
Use IEEE 802.1p
and
Use DSCP
may be activated simultaneously.
The hierarchy for the final priority assigned to the frame is the following:
DSCP
,
IEEE 802.1p
and
Priority
(user); so that:
- The priority established by the user will be associated with an untagged frame.
- The priority present in the frame will be maintained in a tagged frame, provided
the DSCP field is not present (traffic or IP) or does not coincide with any of the
specified values.
