OSPF Auth – Cryptographic

• HMAC-SHA
  • OSPFv2 enhancement
  • For Type 2 Cryptographic Auth
    • Keyed-md5
    • SHA-1
    • SHA-256
    • SHA-384
    • SHA-512
• OSPF Auth now supports multiple keys, automatic time-based key rotation, and singel key chain for multiple interfaces.
• Backwards compatible with interface level MD5
  • Keys still must match.

Configuration:

Key Chain:

Interface:

When applying/upgrading the key chain and interface configurations, make sure the message-digest configuration is removed.