Qcn; Qcn Cnpv Status; Qcn Cnpv Settings - D-Link DXS-3400 SERIES Web Ui Reference Manual

DXS-3400 Series Lite Layer 3 Stackable 10GbE Managed Switch Web UI Reference Guide

QCN

QCN CNPV Status

This window is used to display and configure the Quantized Congestion Notification (QCN) Congestion Notification
Priority Value (CNPV) status on the Switch.
QCN is a form of end-to-end congestion management defined in IEEE 802.1.Qau. The purpose of QCN is to ensure
that congestion is controlled from the sending device to the receiving device in a dynamic fashion that can deal with
changing bottlenecks.
When an IEEE 802.1p priority is assigned as a CNPV globally, the CNPV configuration for all interfaces will be
created with a default value. When a priority is deleted from CNPV, the CNPV configuration for all interfaces will be
deleted.
To view the following window, click QoS > QCN > QCN CNPV Status, as shown below:
The fields that can be configured are described below:
Parameter
QCN Status
CNM Transmit Priority
Click the Apply button to accept the changes made.

QCN CNPV Settings

This window is used to display and configure the QCN feature's CNPV settings.
To view the following window, click QoS > QCN > QCN CNPV Settings, as shown below:
Figure 7-32 QCN CNPV Status Window
Description
Select to globally enable or disable the QCN feature here.
Select the IEEE 802.1p priority value for all Congestion Notification Messages
(CNMs) here. The range is from 0 to 7. By default, this value is 6.
254