Scenario 4-3: Configuring Integrated IS-IS

This scenario shows you how to configure another link-state protocol, IS-IS, in a three-router topology. The topology for this scenario is displayed in Figure 4-6, with the routers named R4, R8, and R9.

Figure 4-6. IS-IS with VLSM

Where this scenario covers redistribution, you use these routers to connect to an OSPF router.

The IP addressing scheme is displayed in Figure 4-6. Note that VLSM is in use. IS-IS supports VLSM, and you configure the three routers to be in domain 1 using the network entity known as the simple format, which describes the area and system ID.


Three methods (referred to as network ...

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