MPLS Payload Protocol Identifier

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Last updated 2019-09-26 (latest revision 2019-03-25)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The MPLS label stack has no explicit protocol identifier field to indicate the protocol type of the MPLS payload. This document proposes a mechanism for containing a protocol identifier field within the MPLS packet, which is useful for any new encapsulation header which may need to be encapsulated with an MPLS header.


Xiaohu Xu (
Hamid Assarpour (
Shaowen Ma (
Francois Clad (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)