OSPF: Difference between revisions
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(→Areas) |
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Block Type 5 LSAs. |
Block Type 5 LSAs. |
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A default route is substituted for external routes. |
A default route is substituted for external routes. |
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Config: |
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# router ospf 1 |
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# area 2 stub |
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;Totally stubby areas |
;Totally stubby areas |
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Block LSAs Type 3,4,5. |
Block LSAs Type 3,4,5. |
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The type 3 LSA describes a default route, substituted for all external and inter-area routes. |
The type 3 LSA describes a default route, substituted for all external and inter-area routes. |
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Config: |
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# router ospf 1 |
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# area 2 stub no-summary |
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;Not- |
;Not-So-Stubby areas |
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Implement stub or totally stubby functionality yet contain an ASBR. |
Implement stub or totally stubby functionality yet contain an ASBR. |
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Type 7 LSAs generated by the ASBR are converted to type 5 by ABRs when entering Backbone Area to be flooded to the rest of the OSPF domain. |
Type 7 LSAs generated by the ASBR are converted to type 5 by ABRs when entering Backbone Area to be flooded to the rest of the OSPF domain. |
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Config: |
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# router ospf 1 |
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# area 2 nssa |
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;Not-So-Stubby Totally-Stubby areas |
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# router ospf 1 |
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# area 2 nssa no-summary |
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