LAB: TITLE

He're you'll be fooling around with and looking at Type 7 LSAs.

  1. Reconfigure areas 0.0.0.1, 0.0.0.2 and 0.0.0.3 as a stub area
  2. How many NSSA LSAs exist in the backbone, and the NSSA attached to your router?
  3. How many Network Summary LSAs exist in the NSSA attached to your router?
  4. Inspect one of the NSSA LSAs that contains routing information for the 3.3.3.0/24, 4.4.4.0/24, 5.5.5.0/24, 7.7.7.0/24, 11.11.11.0/24, or 12.12.12.0/24 networks in detail
  5. Find the corresponding External LSA present in the backbone, and in area 101.101.101.101
  6. What is the forwarding address set to?
  7. Is there an ASBR summary route announcing the presence of the NSSA ASBR that originated the route?
  8. Disable sending summary routes into areas 0.0.0.1, 0.0.0.2 and 0.0.0.3
  9. Finish configuration of both ABRs in each area and check how many Network Summary LSAs are in the area
  10. Check the routing table of one of the internal routers in the 0.0.0.1, 0.0.0.2 or 0.0.0.3 areas
  11. Inject a default route with a metric of 1000 into each NSSA area from the ABRs
  12. Again, configure both ABRs for each area and check how many Network Summary LSAs are in the area
  13. Again, check the routing table of one of the internal routers in the 0.0.0.1, 0.0.0.2 or 0.0.0.3 areas
  14. Locate the LSA announcing the default route
  15. Eliminate all of the Network Summary LSAs in areas 0.0.0.1, 0.0.0.2 and 0.0.0.3 by changing the announcement for the default route to a NSSA LSA that has a metric of 1000 and takes into consideration the cost from the NSSA ABR to the NSSA ASBR
  16. Because counting LSAs is so fun, how many Network Summary LSAs and are in your area now
  17. Reinspect the 0.0.0.0 LSAs in your area
  18. Consolidate all of the external route advertisements into the 3/8, 4/8, 5/8, 7/8, 11/8 and 12/8 networks
  19. Inspect an external LSA for one of the 3/8, 4/8, 5/8, 7/8, 11/8 and 12/8 networks
  20. What is the forwarding address in the External LSA?

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