Cisco CCNP and CCIE Study Notes

Consider the above network which is a slightly modified version of the network used in Problem #72 where the area numbering has been swapped. The admin for the network made the following changes in succession to the network

1. Configured area 1 as a Normal area.
2. Configured area 1 as a NSSA area.
3. Configured area 1 as a Totally Stubby NSSA area.

After each of the steps above, she also captured the output from the show ip ospf database database-summary command. The output from her captures are shown below in scrambled order. Your task in this problem is to match the outputs A/B/C below with the area type for area 1 when the output was captured, i.e. normal/nssa/totally stubby nssa.

Output A

R3#sh ip ospf database database-summary

            OSPF Router with ID (3.3.3.3) (Process ID 100)

Area 1 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   2        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    0        0        0
    Prefixes redistributed in Type-7  0
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Subtotal      5        0        0

Process 100 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   2        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    0        0        0
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Type-5 Ext    1        0        0
      Prefixes redistributed in Type-5  1
  Opaque AS     0        0        0
  Total         6        0        0
R3#

Output B

R3#sh ip ospf database database-summary

            OSPF Router with ID (3.3.3.3) (Process ID 100)

Area 1 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   1        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    1        0        0
    Prefixes redistributed in Type-7  1
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Subtotal      5        0        0

Process 100 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   1        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    1        0        0
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Type-5 Ext    0        0        0
      Prefixes redistributed in Type-5  0
  Opaque AS     0        0        0
  Total         5        0        0
R3#

Output C

R3#sh ip ospf database database-summary

            OSPF Router with ID (3.3.3.3) (Process ID 100)

Area 1 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   2        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    1        0        0
    Prefixes redistributed in Type-7  1
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Subtotal      6        0        0

Process 100 database summary
  LSA Type      Count    Delete   Maxage
  Router        3        0        0
  Network       0        0        0
  Summary Net   2        0        0
  Summary ASBR  0        0        0
  Type-7 Ext    1        0        0
  Opaque Link   0        0        0
  Opaque Area   0        0        0
  Type-5 Ext    0        0        0
      Prefixes redistributed in Type-5  0
  Opaque AS     0        0        0
  Total         6        0        0
R3#