Transition Networks SISGM-CHAS L2, Руководство пользователя

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Transition Networks SISGM
–CHAS L2/L3 Switch User Guide
33625 Rev. B https://www.transition.com/ Page 111 of 234
5.6.2 Port Classification
QoS (Quality of Service) is a method to achieve efficient bandwidth utilization between individual
applications or protocols.
The QoS Ingress Port Classification parameters are described below.
Label Description
Port The port number for which the configuration below applies
QoS class
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.