Zyxel MES-3528 [254/354] Diffserv network example

Chapter 29 Differentiated Services

MES-3528 User’s Guide

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kinds of traffic can be marked for different priorities of forwarding. Resources can

then be allocated according to the DSCP values and the configured policies.

29.1.2 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

138) 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 138 DiffServ Network

29.2 Activating DiffServ

Activate DiffServ to apply marking rules or IEEE 802.1p priority mapping on the

Switch.

P - Platinum

G - Gold

S - Silver

B - Bronze