ISIS MPLS Explicit NULL Label

Document Type Expired Internet-Draft (individual)
Last updated 2012-04-26 (latest revision 2011-10-24)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


There is need to support IP interfaces on the top of GMPLS packet Label Switched Paths (LSPs), and enable IP routing (e.g., OSPF-TE, ISIS-TE) and MPLS protocols on these interfaces. Traffic on an IP/MPLS interface can be user traffic or control traffic. In addition, it can be MPLS, IP or ISIS. Multiplexing IP and MPLS packets over the same LSP is supported in the current MPLS architecture. However, multiplexing IP, MPLS, and ISIS packets over the same LSP is not currently supported. This draft proposes the definition of an explicit ISIS NULL label to enable this type of multiplexing to take place.


George Swallow (
Himanshu Shah (
Nabil Bitar (

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