Below is the setting column for CoS. Enter the VLAN ID of your switch (0~4095) and choose the priority for
each application (0~7).
Note
•
A VLAN Switch (802.1p) is required. The web browsing may fail if the CoS setting is incorrect.
•
Class of Service technologies do not guarantee a level of service in terms of bandwidth and delivery
time; they offer a "best-effort." Users can think of CoS as "coarsely-grained" traffic control and QoS as
"finely-grained" traffic control.
•
Although CoS is simple to manage; it lacks scalability and does not offer end-to-end guarantees since
it is based on L2 protocol.
QoS/DSCP (the DiffServ model)
DSCP-ECN defines QoS at Layer 3 (Network Layer). The Differentiated Services (DiffServ) model is based
on packet marking and router queuing disciplines. The marking is done by adding a field to the IP header,
called the DSCP (Differentiated Services Codepoint). This is a 6-bit field that provides 64 different class IDs.
It gives an indication of how a given packet is to be forwarded, known as the Per Hop Behavior (PHB). The
PHB describes a particular service level in terms of bandwidth, queuing theory, and dropping (discarding the
packet) decisions. Routers at each network node classify packets according to their DSCP value and give them
a particular forwarding treatment; for example, how much bandwidth to reserve for it.
Below are the setting options of DSCP (DiffServ Codepoint). Specify the DSCP value for each application
(0~63).
2.9.5 SNMP (Simple Network Management Protocol)
This section explains how to use the SNMP on the KX-NTV150/KX-NTV160. The Simple Network Management
Protocol is an application layer protocol that facilitates the exchange of management information between
network devices. It helps network administrators to remotely manage network devices and find, solve network
problems with ease.
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User’s Manual
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