VIVOTEK IP8364-C Manuale Utente

 

 

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, queueing 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).