Advanced OSPF - Link-State Advertisements
6 important questions on Advanced OSPF - Link-State Advertisements
What is the function of the OSPF Type 1 Router LSA?
What is the function of the OSPF Type 2 Network LSA?
It identifies all the routers attached to that segment.
What is the function of the OSPF Type 3 Summary LSA?
They create OSPF Type 3 LSAs for on Area from Type 1 LSAs they receive on another area.
They als create OSPF Type 3 LSAs from Type 3 LSAs received from the Backbone Area 0
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What is the function of the OSPF Type 5 AS External LSA?
They use it to inject redistributed routes into OSPF.
Type 5 LSAs are flooded over different areas, through the whole OSPF Domain.
What is the function of the OSPF Type 4 ASBR Summary LSA?
They are created for each Type 5 LSA and it contains a route to the ASBR that created the original Type 5 LSA.
What is the function of the OSPF Type 7 NSSA External LSA?
ABR creates Type 5 LSA from Type 7 LSA
Next ABR adds Type 4 LSA
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