Describe each of them.
LSA Types supported include:
-LSA Type 1 - Router LSA: used by all routers in an area and includes all link information from that router
-LSA Type 2 - Network LSA: used by the DR (Designated Router) and advertise links from all routers in the area
-LSA Type 3 - Summary LSA: used by the ABR (Area Border Router) to advertise the networks within the respective area. You can summarize at the ABR as well.
-LSA Type 4 - ASBR Summary LSA: This is used to take type 5 LSA's and convert them to type 4 LSA's. This is used to ensure the next hop address to the area where the type 5 originated is known in the adjacent areas
-LSA Type 5 - External LSA: used to identify routes redistributed into an area
-LSA Type 7 - Used in NSSA to identify routes redistributed into the NSSA.
Here is a diagram that I found that is helpful in understanding the different LSA types
LSA Types supported include:
-LSA Type 1 - Router LSA: used by all routers in an area and includes all link information from that router
-LSA Type 2 - Network LSA: used by the DR (Designated Router) and advertise links from all routers in the area
-LSA Type 3 - Summary LSA: used by the ABR (Area Border Router) to advertise the networks within the respective area. You can summarize at the ABR as well.
-LSA Type 4 - ASBR Summary LSA: This is used to take type 5 LSA's and convert them to type 4 LSA's. This is used to ensure the next hop address to the area where the type 5 originated is known in the adjacent areas
-LSA Type 5 - External LSA: used to identify routes redistributed into an area
-LSA Type 7 - Used in NSSA to identify routes redistributed into the NSSA.
Here is a diagram that I found that is helpful in understanding the different LSA types
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