2010-03-29 2025-11-20 Expert Review Jeff Haas, Les Ginsberg Updates to this registry must be mirrored in MIB module IANA-BFD-TC-STD-MIB and YANG module iana-bfd-types. See and . 0 No Diagnostic 1 Control Detection Time Expired 2 Echo Function Failed 3 Neighbor Signaled Session Down 4 Forwarding Plane Reset 5 Path Down 6 Concatenated Path Down 7 Administratively Down 8 Reverse Concatenated Path Down 9 mis-connectivity defect 10-31 Unassigned Expert Review Jeff Haas, Les Ginsberg Updates to this registry must be mirrored in MIB module IANA-BFD-TC-STD-MIB and YANG module iana-bfd-types. See and . 0 Reserved 1 Simple Password 2 Keyed MD5 3 Meticulous Keyed MD5 4 Keyed SHA1 5 Meticulous Keyed SHA1 6 NULL 7 Optimized MD5 Meticulous Keyed ISAAC Authentication 8 Optimized SHA1 Meticulous Keyed ISAAC Authentication 9-255 Unassigned