7.13.6 Port DSCP Configuration
This page allows you to configure the basic QoS Port DSCP Configuration
settings for all switch ports.
You can configure DSCP ingress and egress settings. In Ingress settings you
can change ingress translation and classification settings for individual ports. In
egress settings, you can configure Rewriting or Remapping for individual ports.
About Ingress Translate ...
The ingress DSCP value can be translated to another DSCP value for QoS
operation when “Translate” is checked. The translation mapping is set at [DSCP
Translation] page and the translated DSCP value will be used for ingress DSCP
QoS operation.
About Ingress Classify ...
The DSCP ingress classify does not mean DSCP to QoS classification. (DSCP
to QoS mapping is done in the [DSCP-Based QoS] page.) Instead, Ingress
Classify in [Port DSCP] means QoS to internal DSCP mapping. When a QoS
class (either from port default or VLAN Tag or DSCP) is gotten, the Ingress
Classify can map this QoS class to internal DSCP.
This internal DSCP then can do another egress map to affect the DSCP value
when the frame is sent out. The QoS to internal DSCP mapping is set in [DSCP
Classification] page, and the mapping will be applied to egress packets when
“Egress Rewrite” in [Port DSCP] page is “enable”/”Remap”. And the original
DSCP value is lost.
The Ingress Classify could be ...
-
Disable: Disable ingress DSCP QoS class to internal DSCP mapping
operation.
-
DSCP=0: Classify if incoming (or translated if enabled) DSCP is 0.
-
Selected: Classify only selected DSCP for which classification is enabled as
specified in [DSCP Translation] page (select by checking “classify”).
-
All: works for all DSCP values.
About Egress Rewrite ...
This is used to set the DSCP Rewrite for egress packet.
-
Disable: No Egress rewrite.
-
Enable: Rewrite enabled with settings in [DSCP Classification] page without
remapping.
-
Remap: Rewrite enabled with remapping setting in [DSCP Translation] page
from the internal DSCP value.
Configuration by Web
:
[Configuration] -> [QoS] -> [Port DSCP]
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