Port Classification

This page allows you to configure the basic QoS Ingress Classification settings for all switch ports.

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../Graphics/config_qos_port_classification.png
Object Description
Port The port number for which the configuration below applies.
CoS (Class of Service) Controls the default class of service.

All frames are classified to a CoS. There is a one to one mapping between CoS, queue and priority. A CoS of 0 (zero) has the lowest priority.

If the port is VLAN (Virtual LAN) aware, the frame is tagged and Tag Class is enabled, then the frame is classified to a CoS that is mapped from the PCP and DEI value in the tag. Otherwise the frame is classified to the default CoS.

The classified CoS can be overruled by a QCL entry.

If the default CoS has been dynamically changed, then the actual default CoS is shown in parentheses after the configured default CoS.

DPL Controls the default drop precedence level.

All frames are classified to a drop precedence level.

If the port is VLAN aware and the frame is tagged, then the frame is classified to a DPL that is equal to the DEI value in the tag. Otherwise the frame is classified to the default DPL.

If the port is VLAN aware, the frame is tagged and Tag Class. is enabled, then the frame is classified to a DPL that is mapped from the PCP and DEI value in the tag. Otherwise the frame is classified to the default DPL.

The classified DPL 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 CoS and DPL for tagged frames.
Enabled: Use mapped versions of PCP and DEI for tagged frames.

Click on the mode in order 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 CoS and DPL.
DSCP Based Click to Enable DSCP Based QoS Ingress Port Classification.
Address Mode The IP/MAC address mode specifying whether the QCL classification must be based on source (SMAC/SIP) or destination (DMAC/DIP) addresses on this port. This parameter is only used when the key type is Normal.

The allowed values are:

  • Source: Enable SMAC/SIP matching.
  • Destination: Enable DMAC/DIP matching.
Buttons
../_Common/../Graphics/save_new.png Save changes.
../_Common/../Graphics/reset_new.png Undo any changes and revert to previously saved values.