JNCIS-ENT JN0-352 · OSPF

OSPF on Junos: LSDB, areas and router roles

How the link-state database is built from LSA types 1–5 and 7, what ABRs, ASBRs, DRs and BDRs do, how an adjacency walks from Down to Full, and how stub, totally stubby and NSSA areas behave on Junos — including the default-route rule that surprises engineers who come from other platforms.

44 min read9 chapters3 labs15 quiz7 scenarios15 interview Q&A

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Inside this module

  • Lab · Two regions, one backbone
  • Lab · Stub and NSSA the Junos way
  • Lab · Wrong DR, stuck neighbour
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