QoS (Quality of Service) 3 Planes
In
network functions related to Quality of Service (QoS), the three primary planes
are the Control Plane (making decisions about traffic prioritization and
switching), the Data Plane (handling the actual switching of traffic), and the
Management Plane (monitoring traffic conditions).
Control Plane:
This
plane is responsible for determining the best path for data packets based on
factors like network topology, routing protocols, and QoS policies. It
essentially decides which traffic should be prioritized and where it should be
routed, updating routing tables accordingly.
Data
Plane:
Once
the Control Plane has made its decisions, the Data Plane executes those
instructions by forwarding packets according to the established routing paths.
This is the part of the network that actually moves data across the network.
Management
Plane:
This
plane is used to configure and monitor the network device itself, including
managing QoS settings, viewing traffic statistics, and performing
administrative tasks.
Key
points to remember:
QoS
implementation:
The
Control Plane is where QoS policies are defined, determining which traffic
should receive preferential treatment based on factors like delay sensitivity
or bandwidth requirements.
Separation
of concerns:
By
separating these functions into different planes, network devices can
efficiently manage traffic flow while maintaining clear separation between
decision-making (Control Plane) and data forwarding (Data Plane).
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