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Advanced Settings
QoS
QoS (Quality of Service) functions to provide different quality of service for various
network applications and requirements and optimize the bandwidth resource distribution
so as to provide a network service experience of a better quality. The following two parts
are included:
QoS Configuration
: Provide different network applications with different quality of service.
Traffic Control
: Limit bandwidth and broadcast traffic for the switch to ensure normal
network operation.
1 QoS Configuration
Traditional IP network mainly involves business, like www, FTP, E-mail, etc. It can deliver
packets to the destination but ensures no guarantee of forwarding delay, jitter, packet loss
rate and reliability.
As IP technology develops rapidly and all kinds of new business, such as distance
education, teleconference, VOD, etc. emerge, IP network has turned into a multi-service
bearer network from a pure data network. Thus, QoS appears.
Briefly speaking, QoS provides network applications with different quality of service, like
provide dedicated bandwidth, decrease transmission delay and jitter, reduce packet loss
rate, etc.
How QoS works
This switch adopts DiffServ (Differentiated Service) QoS module. This switch classifies
the ingress packets, maps the packets to different priority queues and then forwards the
packets according to specified scheduling algorithms to implement QoS function. The
schematic diagram is shown below:
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