obsoletes

• rfc-2178 — OSPF Version 2

updated by

• rfc-5709 — OSPFv2 HMAC-SHA Cryptographic Authentication
• rfc-6549 — OSPFv2 Multi-Instance Extensions
• rfc-6845 — OSPF Hybrid Broadcast and Point-to-Multipoint Interface Type
• rfc-6860 — Hiding Transit-Only Networks in OSPF
• rfc-7474 — Security Extension for OSPFv2 When Using Manual Key Management
• rfc-8042 — OSPF Two-Part Metric
• rfc-9355 — OSPF Bidirectional Forwarding Detection (BFD) Strict-Mode
• rfc-9454 — Update to OSPF Terminology

also

• std-54