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Types of OSPF LSA's

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beef410's version from 2018-02-05 13:49

Section

Question Answer
Type 1Router Link Advertisement - Per area
Type 2Network Link Advert. Generated by DR's - Same area has DR/BDR info
Type 3Summary Link Advert. Generated by ABR's - Sends to area external to where they were generated. Provides inter-area routes to backbone
Type 4Generated by ABR's informs how to reach ASBR
Type 5AS External Link Advert. - Sent by ASBR's to advertise routes external to the OSPF AS, one per external network, flooded everywhere
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