Chapter 24 Differentiated Services

24.1.2 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 96) 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 96 DiffServ Network

A

S G P P

 

P G S B

S G P P

 

 

 

 

 

 

 

P - Platinum

 

 

 

 

 

 

S

G - Gold

 

 

B

 

 

S - Silver

 

 

 

B

 

B - Bronze

 

 

 

 

 

24.2 Activating DiffServ

Activate DiffServ to apply marking rules or IEEE 802.1p priority mapping on the selected port(s).

Click IP Application > DiffServ in the navigation panel to display the screen as shown.

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ES-2024 Series User’s Guide