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DELL N3000 User Manual

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Configuring Differentiated Services
1307
DiffServ Configuration Examples
This section contains the following examples:
Providing Subnets Equal Access to External Network
This example shows how a network administrator can provide equal access to 
the Internet (or other external network) to different departments within a 
company. Each of four departments has its own Class B subnet that is 
allocated 25% of the available bandwidth on the port accessing the Internet.
Figure 40-17. DiffServ Internet Access Example Network Diagram
Finance
Marketing
Test
Development
Internet
Layer 3 Switch
Port 1/0/5 
Outbound
1/0/1
1/0/2
1/0/3
1/0/4
Source IP:
172.16.10.0
255.255.255.0
Source IP:
172.16.20.0
255.255.255.0
Source IP:
172.16.30.0
255.255.255.0
Source IP:
172.16.40.0
255.255.255.0