Vivotek FD8161 User Manual - Use-IP

VIVOTEKQoS/DSCP (the DiffServ model)DSCP-ECN defines QoS at Layer 3 (Network Layer). The Differentiated Services (DiffServ) model isbased on packet marking and router queuing disciplines. The marking is done by adding a field to theIP header, called the DSCP (Differentiated Services Codepoint). This is a 6-bit field that provides 64different class IDs. It gives an indication of how a given packet is to be forwarded, known as the Per HopBehavior (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 accordingto their DSCP value and give them a particular forwarding treatment; for example, how much bandwidthto reserve for it.Below are the setting options of DSCP (DiffServ Codepoint). Specify the DSCP value for each application(0~63).User's Manual - 43