Network Service Header (NSH) Parameters

Created

  • 2017-11-08

Last Updated

  • 2023-11-21

Available Formats

NSH Base Header Bits

Registration Procedure(s)

  • Standards Action

Reference

Available Formats

Bit Description Reference
2 O (OAM) bit RFC 8300
3 Unassigned
16-19 Unassigned

NSH Version

Registration Procedure(s)

  • Standards Action

Reference

Available Formats

Version Description Reference
00b Protocol as defined by RFC 8300 RFC 8300
01b Reserved RFC 8300
10b Unassigned
11b Unassigned

NSH MD Types

Registration Procedure(s)

  • IETF Review

Reference

Available Formats

MD Type Description Reference
0x0 Reserved RFC 8300
0x1 NSH MD Type 1 RFC 8300
0x2 NSH MD Type 2 RFC 8300
0x3-0xE Unassigned
0xF Experimentation RFC 8300

NSH MD Class

Expert(s)

  • Carlos Pignataro, Joel Halpern, Jim Guichard

Reference

Available Formats

Range Registration Procedures
0x0000-0x01FF IETF Review
0x0200-0xFFF5 Expert Review
Value Meaning Reference Change Controller
0x0000 IETF Base NSH MD Class RFC 8300
0x0001-0x01FF Unassigned
0x0200 BBF Specific NSH Metadata https://www.broadband-forum.org/assignments Broadband Forum
0x0201-0xFFF5 Unassigned
0xFFF6-0xFFFE Experimental RFC 8300
0xFFFF Reserved RFC 8300

NSH IETF-Assigned Optional Variable-Length Metadata Types

Registration Procedure(s)

  • Standards Action

Reference

Available Formats

Value Description Reference
0x00 Subscriber Identifier RFC 8979
0x01 Performance Policy Identifier RFC 8979
0x02 MAC and Encrypted Metadata #1 RFC 9145
0x03 MAC and Encrypted Metadata #2 RFC 9145
0x04 Forwarding Context RFC 9263
0x05 Tenant ID RFC 9263
0x06 Ingress Network Node ID RFC 9263
0x07 Ingress Network Interface RFC 9263
0x08 Flow ID RFC 9263
0x09 Source and/or Destination Groups RFC 9263
0x0A Policy ID RFC 9263
0x0B-0xFF Unassigned

NSH Next Protocol

Registration Procedure(s)

  • Expert Review

Expert(s)

  • Carlos Pignataro, Joel Halpern, Jim Guichard

Reference

Note

If the actual assignment of the Next Protocol field allocation reaches half of the range (that is, when there are 128 unassigned values), IANA needs to alert the IESG. At that point, a new more strict allocation policy SHOULD be considered.

Available Formats

Next Protocol Description Reference
0x00 None RFC 8393
0x01 IPv4 RFC 8300
0x02 IPv6 RFC 8300
0x03 Ethernet RFC 8300
0x04 NSH RFC 8300
0x05 MPLS RFC 8300
0x06 IOAM (Next protocol is an IOAM header) RFC 9452
0x07 SFC Active OAM RFC 9516
0x08-0xFD Unassigned
0xFE Experiment 1 RFC 8300
0xFF Experiment 2 RFC 8300

Forwarding Context Types

Registration Procedure(s)

  • IETF Review

Reference

  • RFC 9263: Network Service Header (NSH) Metadata Type 2 Variable-Length Context Headers

Available Formats

Value Forwarding Context Header Types Reference
0x0 12-bit VLAN identifier RFC 9263
0x1 24-bit double tagging identifiers RFC 9263
0x2 20-bit MPLS VPN label RFC 9263
0x3 24-bit virtual network identifier (VNI) RFC 9263
0x4 32-bit Session ID RFC 9263
0x5-0xE Unassigned
0xF Reserved RFC 9263

Flow ID Context Types

Registration Procedure(s)

  • IETF Review

Reference

  • RFC 9263: Network Service Header (NSH) Metadata Type 2 Variable-Length Context Headers

Available Formats

Value Flow ID Context Header Types Reference
0x0 20-bit IPv6 Flow Label RFC 9263
0x1 20-bit entropy label in the MPLS network RFC 9263
0x2-0xE Unassigned
0xF Reserved RFC 9263

Contact Information

Name Contact URI Last Updated
Broadband Forum help&broadband-forum.org 2019-12-23