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8 Cards in this Set
- Front
- Back
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LSA Type 1 |
Router LSA Type 1s (“ Router Link States”) are generated by each router for every area the router has a link in. These are flooded to a single area only. The name is the recipe, as LSA Type 1s contain the “router link states” for this particular router. |
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LSA Type 2 |
Network LSA Type 2 LSAs are sent out only by DRs. The only Type 2 LSA in R3’ s OSPF database for Area 0 is from Advertising Router 1.1.1.1, the OSPF RID of R1. |
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LSA Type 3 |
Summary LSA These summary link advertisements are generated by ABRs and describe interarea routes. They summarize the networks from one area to another and are not flooded into a total stub area. |
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LSA Type 4 |
Summary ASBR LSA Type 4s are generated only by ABRs and describe the path to the ASBR. Type 4 LSAs are not flooded into a total stub area. |
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LSA Type 5 |
Autonomous system external LSA Type 5 LSAs describe links external to the OSPF domain. This link describes the network injected into the OSPF domain via route redistribution on R1, verified by the address listed as the advertising router. Type 5 LSAs are generated only by ASBRs, and they’re flooded to all areas except stub and total stub areas. |
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LSA Type 6 |
Multicast OSPF LSA Type 6 LSAs are a specialty LSA type generated only by routers using multicast extensions to OSPF (MOSPF) |
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LSA Type 7 |
Not-so-stubby area LSA Type 7s are generated only by an ASBR and sent into a not-so-stub stub area. NSSAs act as stub areas, but some of the more-specific routes are advertised, rather than just a default route. Type 7 LSAs are flooded throughout the NSSA, but they don’t get to leave! Instead, they’re converted to Type 5 LSAs and are then sent out of the NSSA. |
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LSA Type 8 |
External attribute LSA for BGP |
