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

Zyxel MES-3528 [254/354] Diffserv network example
Chapter 29 Differentiated Services
MES-3528 User’s Guide
254
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.
G
S
B
P
S
B
B
G
P
P
S
P - Platinum
G - Gold
S - Silver
B - Bronze
G
P
P
S
A

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