Internet Assigned Numbers Authority

Open Shortest Path First v2 (OSPFv2) Parameters

Created
2007-04-25
Last Updated
2022-10-21
Note
Please also see: 
    [https://www.iana.org/assignments/ospf-authentication-codes]
    [https://www.iana.org/assignments/bandwidth-constraints-model-ids]
    [https://www.iana.org/assignments/ospf-dd-packet-flags]
    [https://www.iana.org/assignments/ospf-lls-tlvs]
    [https://www.iana.org/assignments/ospf-opaque-types]
    [https://www.iana.org/assignments/ospf-mt-routing]
    [https://www.iana.org/assignments/ospf-sig-alg]
    [https://www.iana.org/assignments/ospf-traffic-eng-tlvs]
    [https://www.iana.org/assignments/ospf-parameters]
  
Available Formats

XML

HTML

Plain text

Registries included below

OSPFv2 Options Registry (8 bits)

Registration Procedure(s)
Standards Action
Reference
[RFC4940]
Available Formats

CSV
Value Description Reference
0x01 MT-bit [RFC4915]
0x02 E-bit [RFC2328]
0x04 MC-bit [RFC1584][RFC5110]
0x08 N/P-bit [RFC3101]
0x10 L-bit [RFC5613]
0x20 DC-bit [RFC1793]
0x40 O-bit [RFC5250]
0x80 DN-bit [RFC4576]

OSPF Packet Type (both v2 and v3)

Reference
[RFC2328][RFC4940]
Available Formats

CSV
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]
Available Formats

CSV
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]
Available Formats

CSV
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]

OSPFv2 Router Properties Registry

Registration Procedure(s)
Standards Action
Reference
[RFC4940]
Available Formats

CSV
Value Description Reference
0x01 B-bit [RFC2328]
0x02 E-bit [RFC2328]
0x04 V-bit [RFC2328]
0x08 W-bit [RFC1584][RFC5110]
0x10 Nt-bit [RFC3101]
0x80 Host (H-bit) [RFC8770]

OSPFv2 Grace LSA Top Level TLV

Reference
[RFC4940]
Available Formats

CSV
Range Registration Procedures Note
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
[RFC-ietf-lsr-pce-discovery-security-support-13]
Note
Moved to [https://www.iana.org/assignments/igp-parameters]  
per [RFC-ietf-lsr-pce-discovery-security-support-13].
    

OSPFv2 Instance IDs

Registration Procedure(s)
Standards Action
Reference
[RFC6549]
Available Formats

CSV
Value Designation Reference
0 Base IPv4 Unicast Instance [RFC6549]
1 Base IPv4 Multicast Instance [RFC6549]
2 Base IPv4 In-band Management Instance [RFC6549]
3-127 Private Use [RFC6549]
128-255 Unassigned

OSPFv2 Extended Prefix Opaque LSA TLVs

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC7684]
Available Formats

CSV
Value Description Reference
0 Reserved [RFC7684]
1 OSPFv2 Extended Prefix TLV [RFC7684]
2 OSPF Extended Prefix Range TLV [RFC8665]
3-32767 Unassigned
32768-33023 Reserved for Experimental Use [RFC7684]
33024-65535 Reserved [RFC7684]

OSPFv2 Extended Prefix TLV Sub-TLVs

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC7684]
Available Formats

CSV
Value Description Reference
0 Reserved [RFC7684]
1 SID/Label Sub-TLV [RFC8665]
2 Prefix-SID Sub-TLV [RFC8665]
3 Flexible Algorithm Prefix Metric (FAPM) [RFC-ietf-lsr-flex-algo-25, Section 9]
4 Prefix Source OSPF Router-ID [RFC9084]
5 Prefix Source Router Address [RFC9084]
6-8 Unassigned
9 BIER Sub-TLV [RFC8444]
10 BIER MPLS Encapsulation Sub-TLV [RFC8444]
11-32767 Unassigned
32768-33023 Reserved for Experimental Use [RFC7684]
33024-65535 Reserved [RFC7684]

OSPFv2 Extended Prefix TLV Flags

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC7684]
Available Formats

CSV
Value Description Reference
0x80 A [RFC7684]
0x40 N [RFC7684]
0x20 E-Flag (ELC Flag) [RFC9089]

OSPFv2 Extended Link Opaque LSA TLVs

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC7684]
Available Formats

CSV

OSPFv2 Extended Link TLV Sub-TLVs

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC7684]
Note
The column for the Applicability to L2 Bundle Member sub-TLV (L2BM)
may be marked as follows:
 
Y - sub-TLV MAY appear in L2 Bundle Member sub-TLV
N - sub-TLV MUST NOT appear in L2 Bundle Member sub-TLV
          
Available Formats

CSV

OSPFv2 Extended Inter-Area ASBR TLVs

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC-ietf-lsr-flex-algo-25]
Available Formats

CSV
Value Description Reference
0 Reserved [RFC-ietf-lsr-flex-algo-25]
1 Extended Inter-Area ASBR [RFC-ietf-lsr-flex-algo-25]
2-32767 Unassigned
32768-33023 Reserved for Experimental Use [RFC-ietf-lsr-flex-algo-25]
33024-65535 Reserved [RFC-ietf-lsr-flex-algo-25]

OSPFv2 Extended Inter-Area ASBR Sub-TLVs

Registration Procedure(s)
IETF Review or IESG Approval
Reference
[RFC-ietf-lsr-flex-algo-25]
Available Formats

CSV
Value Description Reference
0 Reserved [RFC-ietf-lsr-flex-algo-25]
1 OSPF Flexible Algorithm ASBR Metric [RFC-ietf-lsr-flex-algo-25]
2-32767 Unassigned
32768-33023 Reserved for Experimental Use [RFC-ietf-lsr-flex-algo-25]
33024-65535 Reserved [RFC-ietf-lsr-flex-algo-25]