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RFC 4182

"Removing a Restriction on the use of MPLS Explicit NULL", September 2005

Canonical URL:
http://www.rfc-editor.org/rfc/rfc4182.txt
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Status:
PROPOSED STANDARD
Updates:
RFC 3032
Updated by:
RFC 5462
Author:
E. Rosen
Stream:
IETF
Source:
mpls (rtg)

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Abstract

The label stack encoding for Multi-protocol Label Switching (MPLS) defines a reserved label value known as "IPv4 Explicit NULL" and a reserved label value known as "IPv6 Explicit NULL". Previously, these labels were only legal when they occurred at the bottom of the MPLS label stack. This restriction is now removed, so that these label values may legally occur anywhere in the stack. This document updates RFC 3032. [STANDARDS-TRACK]


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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