This is a summary of OSPF LSA Types and where they are present:
| LSA Type/Name | Area 0 | Standard Area | Stub Area | NSSA | TSA |
| 1 – Router | x | x | x | x | x |
| 2 – Link | x | x | x | x | x |
| 3 – Network-Summary | x | x | x | x | blocked |
| 4 – ASBR Summary | x | x | not generated | blocked | blocked |
| 5 – AS External | x | x | blocked | blocked | blocked |
| 7 – NSSA external | 7 to 5 | n/a | n/a | x | n/a |
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