OSPF (v2 and v3) - Describe packet types - LSA types
5 important questions on OSPF (v2 and v3) - Describe packet types - LSA types
What are the OSPF LSA types?
-Network LSA (type 2)
-Summary LSA (type 3&4)
-External LSA (type 5&7)
What is the description of OSPF LSA type 2?
describe the networks attached to an OSPF router.
Type 2 LSAs are network link advertisements that are flooded within an area by the Designated Router. They describe ALL the routers attached to specific networks including the DR. These LSAs are flooded only in the originating area.
What is the description of OSPF LSA type 3&4?
describe condense routing information at area borders.
Type 3 LSAs are summary link advertisements that are passed between areas. They describe the networks within an area.
Type 4 LSAs are summary link advertisements that are passed
between areas. They describe the path to the ASBR. Type 4
LSAs do not get flooded into stub areas.
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What is the description of OSPF LSA type 7?
What is the description of OSPF LSA type 9?
Type 9 LSAs are used with OSPFv3/IPv6 and are intra-area
prefix LSAs. A router originates intra-area prefix LSAs for
each router or transit network. Each has a unique linkstate
ID which describes it’s association to the router LSA
or the network LSA and contains prefixes for stub and
transit networks.
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