Falcon R-Class | User Guide
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4.7
Quality of Service (QoS)
QoS is an acronym for
Q
uality
o
f
S
ervice. It is a method to guarantee a bandwidth relationship
between individual applications or protocols. A communications network transports a multitude of
applications and data, including high-quality video and delay-sensitive data such as real-time voice.
Networks must provide secure, predictable, measurable, and sometimes guaranteed services.
Achieving the required QoS becomes the secret to a successful end-to-end business solution.
Therefore, QoS is the set of techniques to manage network resources
.
R Class series QoS mechanism integrates a set of techniques to determine how frames pass through
the switch. The different functions are briefly described below. See also
•
Scheduling
: this function is performed in the Scheduler block on the egress side. The egress
scheduler supports both Strict Priority scheduling and Weighted Fair Queuing (WFQ). Each egress
port has 8 queues.
•
Classification
: this function is performed in the Classifier block on the ingress side. The Classifier
checks the header of the frames to decide to which Class of Service to assign the frame. The class
of service is the queue number to which the frame is sent on egress (see Scheduling above). The
classification is based on L2 to L4 frame header fields. This enables dynamic and flexible QoS
based handling of the frames.
•
Rate Limiting
: this function enables control of the traffic flow rate, by policing and shaping using
the following techniques (See Rate Limiters for more details):
QoS Ingress Port Classification
This section allows you to configure the basic
Ingress Classification settings for all switch ports.
Web GUI: Configuration > QoS > Port Classification
Figure 4-47: QoS Ingress Port Classification settings
