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118 Chapter 5: Configuring PPP and Controlling Network Access
Scenarios
The following case studies and questions are designed to draw together the content of the
chapter and exercise your understanding of the concepts. There is not necessarily a right answer
to each scenario. The thought process and practice in manipulating the related concepts is the
goal of this section.
Scenario 5-1
Refer to Figure 5-7 for this scenario.
Figure 5-7
Network Environment for Scenario 5-1
These three routers need to be configured for dial-up access. Varying degrees of configuration
are performed on each router. Use the figure as the sole source of information for the following
tasks:
1
Configure the Central site router for CHAP authentication. The password in all instances
is "cisco". The interfaces in question are BRI 0 and BRI 1. Don't worry about the
intricacies of the ISDN configuration. The task here is the PPP configuration only. ISDN
is covered in Chapter 6.
Central site
Site A
Site B
BRI0
BRI0
BRI0
BRI1
ISDN