iES26GF
User’s
Manual
UM-iES26GF-1.2.3-EN.docx
Pages 85 of 169
The following table describes the labels for the
QoS Ingress Port Classification
screen.
Label
Description
Port
The port number for which the configuration below applies
QoS Class
It controls the default QoS class
All frames are classified to a QoS class. There is a one to one mapping between
QoS class, queue, and priority. A QoS class of 0 (zero) has the lowest priority.
•
If the port is VLAN aware and the frame is tagged, then the frame is classified
to a QoS class that is based on the PCP value in the tag as shown below.
Otherwise the frame is classified to the default QoS class. PCP value: 0 1 2 3
4 5 6 7; QoS class: 1 0 2 3 4 5 6 7
•
If the port is VLAN aware, the frame is tagged, and Tag Class is enabled, then
the frame is classified to a QoS class that is mapped from the PCP and DEI
value in the tag. Otherwise the frame is classified to the default QoS class.
The classified QoS class can be overruled by a QCL entry.
Note: if the default QoS class has been dynamically changed, then the actual
default QoS class is shown in parentheses after the configured default QoS class.
DP level
Controls the default Drop Precedence Level All frames are classified to a
DP
Level
.
•
If the port is VLAN aware and the frame is tagged, then the frame is classified
to a DP level that is equal to the DEI value in the tag. Otherwise the frame is
classified to the default DP level.
•
If the port is VLAN aware, the frame is tagged, and Tag Class is enabled, then
the frame is classified to a DP level that is mapped from the PCP and DEI
value in the tag. Otherwise the frame is classified to the default DP level.
The classified DP level can be overruled by a QCL entry.
PCP
Controls the default PCP value
All frames are classified to a PCP value.
•
If the port is VLAN aware and the frame is tagged, then the frame is classified
to the PCP value in the tag. Otherwise the frame is classified to the default
PCP value.
DEI
Controls the default DEI value
All frames are classified to a DEI value.
•
If the port is VLAN aware and the frame is tagged, then the frame is classified
to the DEI value in the tag. Otherwise the frame is classified to the default DEI
value.
Tag Class
Shows the classification mode for tagged frames on this port.
•
Disabled
: Use default QoS class and DP level for tagged frames.
•
Enabled
: Use mapped versions of PCP and DEI for tagged frames.
Click on the mode to configure the mode and/or mapping.
Note: this setting has no effect if the port is VLAN unaware. Tagged frames
received on VLAN-unaware ports are always classified to the default QoS class
and DP level.
DSCP Based
Add a check mark to enable
DSCP Based
QoS Ingress Port Classification
Save
Click
Save
to save changes.
Reset
Click
Reset
to undo any changes made locally and revert to previously saved
values.
Note: DSCP stands for Differentiated Services (DiffServ)Code Point. The six most significant bits of
the DiffServ field are called DSCP.
