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CCNP: Building Scalable Internetworks v5.0 - Case Study 2 OSPF Four Routers Copyright

© 2006, Cisco Systems, Inc

Case Study 2 OSPF Four Routers

Topology Diagram

Using a Cisco router as the Frame Relay switch (FRS):

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CCNP: Building Scalable Internetworks v5.0 - Case Study 2 OSPF Four Routers Copyright

© 2006, Cisco Systems, Inc

Using an Adtran Atlas 550 as the Frame Relay switch:

Instructions

Plan, design and implement the International Travel Agency network shown in
the diagram, and described below. Verify that all configurations are operational
and functioning according to the guidelines.

Scenario

The International Travel Agency needs its core network set up for OSPF with
the specifications indicated in the diagram and shown below.

• Use the addressing scheme shown in the diagram.

• Use OSPF with various networks shown in the diagram.

• Configure the OSPF backbone area to be on Loopback0 on Headquarters.

• Configure the Frame Relay subnets as point-to-point subinterfaces. The link

between Headquarters and East should be in area 100, and the link between
Headquarters and West should be in area 300.

• Area 300 should be configured as an NSSA.

• Configure East’s loopback interfaces to be in area 200. Summarize this area

with the most efficient summary.

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CCNP: Building Scalable Internetworks v5.0 - Case Study 2 OSPF Four Routers Copyright

© 2006, Cisco Systems, Inc

• Redistribute the loopback network on West into OSPF.

• Create virtual links as necessary for full connectivity.

• Make sure that all loopback interfaces get advertised with the correct subnet

mask.