ZyXEL Communications GS1500-24P - Diffserv Network Example; Port-Based Priority

Chapter 10 QoS
GS1500-24P User’s Guide
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10.3.3 DiffServ Network Example
The following figure depicts a DiffServ network consisting of a group of directly
connected DiffServ-compliant network devices. The boundary node (A in Figure
36) in a DiffServ network classifies (marks with a DSCP value) the incoming
packets into different traffic flows (Platinum, Gold, Silver, Bronze) based on the
configured marking rules. A network administrator can then apply various traffic
policies to the traffic flows. An example traffic policy, is to give higher drop
precedence to one traffic flow over others. In our example, packets in the Bronze
traffic flow are more likely to be dropped when congestion occurs than the packets
in the Platinum traffic flow as they move across the DiffServ network.
Figure 36 DiffServ Network
10.4 Port-based Priority
You can configure the Switch to assign a IEEE 802.1p priority to packets based on
the ingress (incoming) port of the packet.