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                                                 Bidirectional Forwarding Detection (BFD) Parameters

   Created
   2010-03-29

   Last Updated
   2025-11-20

   Available Formats
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   Registries Included Below

     • BFD Diagnostic Codes
     • BFD Authentication Types

BFD Diagnostic Codes

   Registration Procedure(s)

 Expert Review

   Expert(s)

 Jeff Haas, Les Ginsberg

   Reference
   [RFC5880]

   Note

 Updates to this registry must be mirrored in MIB module
 [IANA-BFD-TC-STD-MIB] and YANG module [iana-bfd-types].
 See [RFC7730] and [RFC9127].


   Available Formats
   [IMG]
   CSV

   Value    BFD Diagnostic Code Name    Reference
     0   No Diagnostic                  [RFC5880]
     1   Control Detection Time Expired [RFC5880]
     2   Echo Function Failed           [RFC5880]
     3   Neighbor Signaled Session Down [RFC5880]
     4   Forwarding Plane Reset         [RFC5880]
     5   Path Down                      [RFC5880]
     6   Concatenated Path Down         [RFC5880]
     7   Administratively Down          [RFC5880]
     8   Reverse Concatenated Path Down [RFC5880]
     9   mis-connectivity defect        [RFC6428]
   10-31 Unassigned

BFD Authentication Types

   Registration Procedure(s)

 Expert Review

   Expert(s)

 Jeff Haas, Les Ginsberg

   Reference
   [RFC5880]

   Note

 Updates to this registry must be mirrored in MIB module
 [IANA-BFD-TC-STD-MIB] and YANG module [iana-bfd-types].
 See [RFC7730] and [RFC9127].


   Available Formats
   [IMG]
   CSV

   Address             BFD Authentication Type Name                             Reference
      0    Reserved                                             [RFC5880]
      1    Simple Password                                      [RFC5880]
      2    Keyed MD5                                            [RFC5880]
      3    Meticulous Keyed MD5                                 [RFC5880]
      4    Keyed SHA1                                           [RFC5880]
      5    Meticulous Keyed SHA1                                [RFC5880]
      6    NULL                                                 [RFC-ietf-bfd-stability-21]
      7    Optimized MD5 Meticulous Keyed ISAAC Authentication  [RFC-ietf-bfd-secure-sequence-numbers-27]
      8    Optimized SHA1 Meticulous Keyed ISAAC Authentication [RFC-ietf-bfd-secure-sequence-numbers-27]
    9-255  Unassigned

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