Layer 3/4 Priority Settings; Mapping Layer 3/4 Priorities To Cos Values; Figure 3-134 Configuring Queue Scheduling - Samsung iES4028F Management Manual

Note:
This switch does not allow the queue service weights to be set. The weights are
1, 2, 4, 8, for queues 0 through 3 respectively.
fixed as
Command Attributes
• WRR Setting Table
• Weight Value – Set a new weight for the selected traffic class. (Range: 1-15)
Web – Click Priority, Queue Scheduling.
CLI – The following example shows how to display the WRR weights assigned to
each of the priority queues.
Console#show queue bandwidth
Queue ID Weight
-------- ------
0 1
1 2
2 4
3 8
Console

Layer 3/4 Priority Settings

Mapping Layer 3/4 Priorities to CoS Values

This switch supports one method of prioritizing layer 3/4 traffic to meet application
requirements. Traffic priorities can be specified in the IP header of a frame, using the
priority bits in the Type of Service (TOS) octet or the number of the TCP port. If the
priority bits are used, the TOS octet may contain six bits for Differentiated Services
Code Point (DSCP) service. When these service is enabled, the priorities are
mapped to a Class of Service value by the switch, and the traffic then sent to the
corresponding output queue.
Because different priority information may be contained in the traffic, this switch
maps priority values to the output queues in the following manner – The precedence
for priority mapping is IP DSCP Priority and then Default Port Priority.
20. CLI shows Queue ID.
20
– Displays a list of weights for each traffic class (i.e., queue).

Figure 3-134 Configuring Queue Scheduling

Class of Service Configuration
3
4-311
3-235