This chapter contains the following sections:
Quality of Service
describes the configurable Cisco NX-OS Quality of Service (QoS) features. You
use the QoS features to provide the most desirable flow of traffic through a
network. QoS allows you to classify the network traffic,
prioritize the traffic flow, and provide congestion avoidance. The
control of traffic is based on the fields in the packets that flow through the
system. You use the Modular QoS CLI (MQC) to create the traffic classes and
policies of the QoS features.
QoS features are
applied using QoS policies and queuing policies, as follows:
include classification and marking features.
use the queuing and scheduling features
at egress. At ingress, they are used to configure buffer threshold
and priority group mapping.
policies include configuring maximum transmission unit (MTU),
pause no-drop, and queue-limit. It is also used to configure explicit congestion notification (ECN) and weighted random early detection (WRED).
Priority flow control.