Registry included below
IETF Review
The Open Shortest Path First (OSPF) protocols has a provision for authentication, and the type of authentication can be indicated by a code number.
Code | Authentication Method | Reference |
---|---|---|
0 | No Authentication | [RFC1583] |
1 | Simple Password Authentication | [RFC1583] |
2 | Cryptographic authentication | [RFC2328][RFC5709] |
3 | Cryptographic Authentication with Extended Sequence Numbers | [RFC7474] |
4-255 | Unassigned | |
256-65535 | Deprecated | [RFC6549] |