RFC 4182: Removing a Restriction on the use of MPLS Explicit NULL

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…

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Outgoing relationships (2 related RFCs)

Updates, Normative reference — RFC 3032: MPLS Label Stack Encoding
Informative reference — RFC 3270: Multi-Protocol Label Switching (MPLS) Support of Differentiated Services

Incoming relationships (3 related RFCs)

Updated by, Normatively referenced by — RFC 5462: Multiprotocol Label Switching (MPLS) Label Stack Entry: "EXP" Field Renamed to "Traffic Class" Field
Updated by, Normatively referenced by — RFC 7274: Allocating and Retiring Special-Purpose MPLS Labels
Normatively referenced by — RFC 7325: MPLS Forwarding Compliance and Performance Requirements