Scenario 5-1: Configuring EIGRP

In this scenario, you configure eight Cisco routers for IP routing using a Class B (/16) network 131.108.0.0 with a Class C subnet mask (255.255.255.0 or /24). The serial links will use a two-host subnet to demonstrate the use of VLSM with EIGRP.

Assume the core backbone network resides on the Ethernet between R1 and R2.

Figure 5-2 displays a network with seven routers in AS1 and one remote router in AS2.

Figure 5-2. EIGRP in AS 1 and AS 2

The IP address assignment for the WAN links is described in Table 5-3. Note the use of VLSM across the WAN Links.

Table 5-3. IP Address Assignments
Router IP Address Range
R1

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