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IGS-9168GP User’s Manual
ORing Industrial Networking Corp
77
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
Click to enable DSCP-based QoS Ingress Port Classification
5.6.3 Port Tag Remaking
You can set QoS egress queues on a port such as classifying data and marking it according to
its priority and the policies. Packets will then travel across the switch’s internal paths carrying
their assigned QoS tag markers. At the egress port, these markers are read and used to
determine which queue each data packet is forwarded to. When the
traffic does not conform
to the conditions set in a policer command, you can remark the traffic.