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4.6 QoS
QoS pages include trust state, mapping, priority override, and CoS
function.
4.6.1 Trust State
The Ingress Policy block determines
the priority of each frame for the
Q u e u e C o n t r o l l e r. T h e s w i t c h
supports this on a per port basis
by setting the configuration in the
following fields:
• Port: Select the port to configure.
• Trust State: Trust DSCP or CoS.
a) Trust CoS: Use IEEE Tags.
Use IEEE 802.1p Traffic Class field for priority data if the frame is an
IEEE 802.3ac tagged frame. Otherwise, use port's default priority for
priority data.
b) Trust DSCP: Use IP for priority. Use IPv4 TOS and/or Diffserv fields if
the frame is IPv4 and use IPv6 Traffic Class fields if the frame is IPv6
for priority data. Otherwise, use port's default priority for priority data.
About Trust DSCP, The related setting is in the Mapping and the CoS
pages.
Click <OK> to send settings to the switch via the HTTP server. Click
<Reload> to refresh the settings. To permanently save the configuration,
go to the Save Configuration page, then click <Save>.
4.6.2 Mapping
This page is used to map DSCP
(Differentiated Services Code Point)
value to CoS (Classification of
Service) priority. The valid DSCP
value is from 0 to 63. For IPv6, 4
multiply by DSCP value are Traffic
Class value. For example, DSCP
value 4 means IPv6 Traffic Class
value is 16. The switch supports this
by setting the configuration in the
Chapter 4 - Configuration Management
ASUS GigaX 1024i+
Figure 41. Trust state
Figure 42. Mapping
39
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