Open Shortest Path First (OSPF) Authentication Codes

Registry included below

Authentication Codes

Registration Procedure(s)

IETF Consensus

Reference

[RFC2328][RFC6549]

Note

The Open Shortest Path First (OSPF) protocols has a provision for
authentication, and the type of authentication can be indicated by
a code number.

Available Formats

CSV

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]