KTI KS-2300, User Manual

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ToS Define the transmit priority and drop rate operation in
the switch for each priority value in ToS.
Profile Define the QoS operation profiles for packet transmit
scheduling of each priority queue on ports
Port
Configuration Assign the operation profile for each physical port
Rate Control Setup the traffic rate allowed on each port
u
Global Setting
Set the general configuration for the QoS operation.
1. QoS Status : Enable / Disable. This function can enable or disable the
QoS function of the switch.
2. DiffServ Expedite Forwarding : Enable / Disable. This function can
enable or disable the DiffServ EF function on the switch. This switch can
map IETF DifferServ classes to its priority classes and transfer DiffServ
packets with the following queue mapping.
Tx Queues P3 P2 P1 P0
IETF NM+EF AF0 AF1 BE0
Note: DiffServ" is the abbreviation of " Differentiated Service ".
Differentiated Services provides a simple and coarse method of classifying
services of various applications. And
Expedited Forwarding (EF) has a
single codepoint (DiffServ value). EF minimizes delay and jitter and
provides the highest level of aggregate quality of service. Any traffic that
exceeds some traffic limit may be discarded. The simplicity of DiffServ to
prioritize traffic belies its flexibility and power. When DiffServ uses
specific application types to identify and classify constant-bit-rate traffic, it
will be possible to establish well-defined aggregate flows that may be
directed to fixed bandwidth pipes. As a result, you could share resources
efficiently and still provide guaranteed service.