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Status:

PROPOSED STANDARD

Updates:

RFC 3032,RFC 4023

Authors:

T. Eckert
E. Rosen, Ed.
R. Aggarwal
Y. Rekhter

Stream:

IETF

Source:

mpls (rtg)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC5332

Discuss this RFC: Send questions or comments to the mailing listmpls@ietf.org

Other actions:Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 5332

Abstract

RFC 3032 established two data link layer codepoints for MPLS, used todistinguish whether the data link layer frame is carrying an MPLSunicast or an MPLS multicast packet. However, this usage was neverdeployed. This specification updates RFC 3032 by redefining themeaning of these two codepoints. Both codepoints can now be used tocarry multicast packets. The second codepoint (formerly the"multicast codepoint") is now to be used only on multiaccess media,and it is to mean "the top label of the following label stack is anupstream-assigned label".

RFC 3032 does not specify the destination address to be placed in the"MAC DA" (Medium Access Layer Destination Address) field of anethernet frame that carries an MPLS multicast packet. This documentprovides that specification.

This document updates RFC 3032 and RFC 4023. [STANDARDS-TRACK]

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.