rfc-7385

IANA Registry for P-Multicast Service Interface (PMSI) Tunnel Type Code Points

L. Andersson, G. Swallow

date2014-10 streamIETF areartg wgl3vpn statusPROPOSED STANDARD pages4 canonicalhttps://www.rfc-editor.org/rfc/rfc7385 doi10.17487/RFC7385

RFC 6514 created a space of Tunnel Type code points for a new BGP attribute called the "P-Multicast Service Interface Tunnel (PMSI Tunnel) attribute". However, the RFC did not create a corresponding IANA registry. There now is need to make further code point allocations from this name space. This document serves to update RFC 6514 in that it creates an IANA registry for that purpose.

updated by

rfc-8317 — Ethernet-Tree (E-Tree) Support in Ethernet VPN (EVPN) and Provider Backbone Bridging EVPN (PBB-EVPN)
rfc-8338 — Signaling Root-Initiated Point-to-Multipoint Pseudowire Using LDP

updates

rfc-6514 — BGP Encodings and Procedures for Multicast in MPLS/BGP IP VPNs

Extracted elements (8)

design-rationale §1

RFC 6514 allocated PMSI Tunnel Type code points 0–7 but omitted creating a corresponding IANA registry. The need to allocate additional code points (specifically for Inter-Area P2MP Segmented LSPs) made creating a formal registry necessary, prompting this update to RFC 6514.

registry, mpls, bgp, multicast

interoperability-note §1

This document updates RFC 6514 by establishing the formal IANA registry governance for PMSI Tunnel Type code points; all existing values defined in RFC 6514 are grandfathered into the new registry with their original meanings.

mpls, bgp, multicast, registry

normative-requirement §3 MUST

Allocation of values 0x00 to 0xFA in the PMSI Tunnel Tunnel Types registry requires IETF Review as defined in RFC 5226.

registry, bgp, mpls

normative-requirement §3 MUST

Value 0xFF is reserved; its status may only be changed through Standards Action as defined in RFC 5226.

registry, bgp, mpls

normative-requirement §3 MUST NOT

Values 0xFB to 0xFE are designated as experimental and are not to be assigned by IANA.

registry, bgp, mpls

protocol-element §3

The PMSI Tunnel attribute (defined in RFC 6514) uses a single octet field to specify the tunnel type. Initial assigned values are: 0x00 (no tunnel information present), 0x01 (RSVP-TE P2MP LSP), 0x02 (mLDP P2MP LSP), 0x03 (PIM-SSM Tree), 0x04 (PIM-SM Tree), 0x05 (BIDIR-PIM Tree), 0x06 (Ingress Replication), 0x07 (mLDP MP2MP LSP).

mpls, bgp, multicast

registry §3

RFC 7385 creates a new IANA registry called 'P-Multicast Service Interface Tunnel (PMSI Tunnel) Tunnel Types' within the 'Border Gateway Protocol (BGP) Parameters' registry, initially populated with values 0x00–0x07 from RFC 6514, unassigned range 0x08–0xFA, experimental range 0xFB–0xFE, and reserved value 0xFF.

registry, mpls, bgp, multicast

security-consideration §2

This document simply creates an IANA registry from a table in RFC 6514 and introduces no new security concerns.

security, registry