OSPF: Link State Advertisement (LSA) – 2

Read LSA1
Type 2 LSA generates for each transit broadcast or NBMA network in area. Transit network has at least attached two directly connected routers. Multiacess like ethernet is an example of transit network. Designated Router (DR) is responsible for advertising network LSA which includes the list of directly connected routers with subnet mask list. It floods only in area and doesn’t cross the Area Border Router(ABR). LSID for network LSA is the ip interface address of the DR that advertises it.


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