OSPF Type 7 LSA (NSSA External Summary)
#CCNA #lsa #OSPF
The OSPF not-so-stubby area (NSSA) feature is a non-proprietary extension of the existing stub area feature that allows the injection of external routes in a limited fashion into the stub area.
Redistribution into an NSSA area creates a Type 7 LSA, which can only exist in an NSSA area. An NSSA ASBR (Autonomous System Boundary Router) generates this LSA and an NSSA ABR (Area Border translates it into a Type 5 LSA, which gets propagated into the OSPF domain.
Chapters:
00:00 Introduction
00:15 OSPF Link-State Advertisement (LSA) Type 7: NSSA External Summary
01:11 LSAs Propagation
02:17 OSPF Type 7 LSA Generic Output View
02:40 OSPF Type 7 LSA Detailed Output View
03:08 OSPF Type 7 LSA Practical Example
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