                                                   Open Shortest Path First v2 (OSPFv2) Parameters

   Created
           2007-04-25

   Last Updated
           2009-04-16

   This registry is also available in XML and plain text formats.

   Registries included below

     * OSPFv2 Options Registry (8 bits)
     * OSPF Packet Type (both v2 and v3)
     * OSPFv2 Link State (LS) Type
     * OSPFv2 Router LSA Link Type (Value 1)
     * OSPF Router Information (RI) TLVs
     * OSPF Router Informational Capability Bits
     * OSPFv2 Router Properties Registry
     * OSPFv2 Grace LSA Top Level TLV
     * Path Computation Element (PCE) Capability Flags

OSPFv2 Options Registry (8 bits)

   Reference
           [RFC4940]

   Registration Procedures
           Standards Action

   Value Description     Reference
   0x01  MT-bit      [RFC4915]
   0x02  E-bit       [RFC2328]
   0x04  MC-bit      [RFC1584][RFC5110]
   0x08  N/P-bit     [RFC3101]
   0x10  Reserved
   0x20  DC-bit      [RFC1793]
   0x40  O-bit       [RFC5250]
   0x80  DN-bit      [RFC4576]

OSPF Packet Type (both v2 and v3)

   Reference
           [RFC2328][RFC4940]

    Range  Registration Procedures
    1-127  Standards Action
   128-255 Reserved

    Value      Description      Reference
      0    Reserved
      1    Hello                [RFC2328]
      2    Database Description [RFC2328]
      3    Link State Request   [RFC2328]
      4    Link State Update    [RFC2328]
      5    Link State Ack       [RFC2328]
    6-127  Unassigned
   128-255 Reserved

OSPFv2 Link State (LS) Type

   Reference
           [RFC2328][RFC4940]

    Range  Registration Procedures
    1-127  Standards Action
   128-255 Reserved

    Value        Description            Reference
      0    Reserved                 [RFC4940]
      1    Router-LSA               [RFC2328]
      2    Network-LSA              [RFC2328]
      3    Summary-LSA (IP network) [RFC2328]
      4    Summary-LSA (ASBR)       [RFC2328]
      5    AS-external-LSA          [RFC2328]
      6    Group-membership-LSA     [RFC1584][RFC5110]
      7    NSSA AS-external LSA     [RFC3101]
      8    Reserved
      9    Link-scoped Opaque LSA   [RFC5250]
     10    Area-scoped Opaque LSA   [RFC5250]
     11    AS-scoped Opaque LSA     [RFC5250]
   12-127  Unassigned
   128-255 Reserved

OSPFv2 Router LSA Link Type (Value 1)

   Reference
           [RFC4940]

    Range  Registration Procedures
    1-127  Standards Action
   128-255 Reserved

   Value                 Description                 Reference
     0   Reserved                                    [RFC4940]
     1   Point-to-Point connection to another router [RFC2328]
     2   Transit Network                             [RFC2328]
     3   Stub Network                                [RFC2328]
     4   Virtual Link                                [RFC2328]

OSPF Router Information (RI) TLVs

   Reference
           [RFC4970]

      Range    Registration Procedures        Notes
     1-32767   Standards Action
   32768-32777 Experimentation         IANA does not assign
   32778-65535 Reserved                IANA does not assign

   Type Value          Capabilities          Reference
        0      Reserved                      [RFC4970]
        1      RI Informational Capabilities [RFC4970]
        2      Unassigned
        3      TE-MESH-GROUP TLV (IPv4)      [RFC4972]
        4      TE-MESH-GROUP TLV (IPv6)      [RFC4972]
        5      TE Node Capability Descriptor [RFC5073]
        6      PCED                          [RFC5088]
     7-32767   Unassigned
   32768-32777 Experimentation               [RFC4970]
   32778-65535 Reserved                      [RFC4970]

OSPF Router Informational Capability Bits

   Reference
           [RFC4970]

   Registration Procedures
           Standards Action

   Bit            Capabilities                                                           Reference
    0   OSPF graceful restart capable    [RFC3623]
    1   OSPF graceful restart helper     [RFC3623]
    2   OSPF Stub Router support         [RFC3137]
    3   OSPF Traffic Engineering support [RFC3630]
    4   OSPF point-to-point over LAN     [N. Shen, A. Zinin, "Point-to-point operation over LAN in link-state routing protocols", Work in Progress,
                                         April 2006.]
    5   OSPF Experimental TE             [RFC4973]
   6-31 Unassigned

OSPFv2 Router Properties Registry

   Reference
           [RFC4940]

   Registration Procedures
           Standards Action

   Value Description     Reference
   0x01  B-bit       [RFC2328]
   0x02  E-bit       [RFC2328]
   0x04  V-bit       [RFC2328]
   0x08  W-bit       [RFC1584][RFC5110]
   0x10  Nt-bit      [RFC3101]

OSPFv2 Grace LSA Top Level TLV

   Reference
           [RFC4940]

      Range    Registration Procedures        Notes
      1-255    Standards Action
    256-65519  Reserved                IANA does not assign
   65520-65527 Experimentation         IANA does not assign
   65528-65535 Vendor Private Use      IANA does not assign

      Value          Description       Reference
        0      Reserved
        1      Grace Period            [RFC3623]
        2      Graceful Restart reason [RFC3623]
        3      IP Interface Address    [RFC3623]
      4-255    Unassigned
    256-65519  Reserved
   65520-65527 Experimentation
   65528-65535 Vendor Private Use

Path Computation Element (PCE) Capability Flags

   Reference
           [RFC5088]

   Registration Procedures
           IETF consensus

    Bit                    Capability Description                                       Reference
     0   Path computation with GMPLS link constraints                [RFC5088]
     1   Bidirectional path computation                              [RFC5088]
     2   Diverse path computation                                    [RFC5088]
     3   Load-balanced path computation                              [RFC5088]
     4   Synchronized paths computation                              [RFC5088]
     5   Support for multiple objective functions                    [RFC5088]
     6   Support for additive path constraints (max hop count, etc.) [RFC5088]
     7   Support for request prioritization                          [RFC5088]
     8   Support for multiple requests per message                   [RFC5088]
     9   Global Concurrent Optimization (GCO)                        [RFC-ietf-pce-global-concurrent-optimization-10]
   10-31 Unassigned
