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                                                                 MPLS Network Actions

Created
        2026-03-05

Last Updated
        2026-08-26

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Registries Included Below

  • Network Action Flags Without Ancillary Data
  • Network Action Opcodes
  • Post-Stack MPLS Header Types

Network Action Flags Without Ancillary Data

Reference
        [RFC9994]

Range  Registration Procedures
0-14   IETF Review
15-16  Experimental Use
17-19  Private Use
20-439 IETF Review

Bit Position Description Reference
No registrations at this time.

Network Action Opcodes

Reference
        [RFC9994][RFC-ietf-mpls-mna-ps-hdr-19]

Available Formats
        [IMG]
        CSV

 Range  Registration Procedures
1-110   IETF Review
111-114 Experimental Use
115-126 Private Use
127     IETF Review

Opcode                    Description                        Applicability                   Reference
   0    Reserved                                        Not Applicable          [RFC9994]
   1    Flag-Based Network Action Indicators without AD In-Stack Only           [RFC9994]
   2    No operation Opcode                             In-Stack and Post-Stack [RFC9994]
   3    13-bit NRP Selector                             In-Stack Only           [RFC-ietf-mpls-mna-nrp-selector-07]
   4    20-bit NRP Selector                             In-Stack Only           [RFC-ietf-mpls-mna-nrp-selector-07]
   5    20-bit Entropy and NRP Selector                 In-Stack Only           [RFC-ietf-mpls-mna-nrp-selector-07]
   6    Post-Stack MPLS Header Start Offset             In-Stack Only           [RFC-ietf-mpls-mna-ps-hdr-19]
   7    Post-Stack MPLS Header End Offset               In-Stack Only           [RFC-ietf-mpls-mna-ps-hdr-19]
 8-110  Unassigned                                      In-Stack and Post-Stack
111-114 Reserved for Experimental Use                   In-Stack and Post-Stack [RFC9994]
115-126 Reserved for Private Use                        In-Stack and Post-Stack [RFC9994]
  127   Opcode Range Extension Beyond 127               In-Stack and Post-Stack [RFC9994]

Post-Stack MPLS Header Types

Reference
        [RFC-ietf-mpls-mna-ps-hdr-19]

Available Formats
        [IMG]
        CSV

   Range    Registration Procedures
1-65520     IETF Review
65521-65524 Experimental Use
65525-65535 Private Use

   Type              Description                    Reference
     0      Reserved                      [RFC-ietf-mpls-mna-ps-hdr-19]
     1      MNA Post-Stack Header         [RFC-ietf-mpls-mna-ps-hdr-19]
  2-65520   Unassigned
65521-65524 Reserved for Experimental Use [RFC-ietf-mpls-mna-ps-hdr-19]
65525-65535 Reserved for Private Use      [RFC-ietf-mpls-mna-ps-hdr-19]

Licensing Terms