DXS-3400 Series Lite Layer 3 Stackable 10GbE Managed Switch Web UI Reference Guide
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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:
Figure 7-32 QCN CNPV Status Window
The fields that can be configured are described below:
Parameter
Description
QCN Status
Select to globally enable or disable the QCN feature here.
CNM Transmit Priority
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.
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:
Summary of Contents for DXS-3400 SERIES
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