Layer 3/4 priority settings, Mapping layer 3/4 priorities to cos values – Asus GigaX2024SX User Manual

Page 152

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Figure 3-75. Configuring Queue Scheduling

ing example shows how to assign WRR weights to each of the

priority queues.

CLI – The follow

Layer 3/4 Priority Settings

Mapping Layer 3/4 Priorities to CoS Values

orts several common methods of prioritizing layer 3/4 traffic to

quirements. 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

t. If priority bits are used, the ToS octet may contain three bits for IP

Precedence or six bits for Differentiated Services Code Point (DSCP) service.
When these services are enabled, the priorities are mapped to a Class of Service

sponding output queue.

formation may be contained in the traffic, this switch

ueues in the following manner:

for priority mapping is IP Port Priority, IP Precedence or DSCP

n Default Port Priority.

nd DSCP Priority cannot both be enabled. Enabling one of

This switch supp
meet application re

of the TCP por

value by the switch, and the traffic then sent to the corre

Because different priority in
maps priority values to the output q

• The precedence
Priority, and the
• IP Precedence a

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