mLDP In-Band Signaling with Wildcards
draft-ietf-mpls-mldp-in-band-wildcard-encoding-01

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Last updated 2014-03-04 (latest revision 2014-03-03)
Replaces draft-wijnands-mpls-mldp-in-band-wildcard-encoding
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MPLS Working Group                                     IJ. Wijnands, Ed.
Internet-Draft                                                  E. Rosen
Intended status: Standards Track                                   Cisco
Expires: September 4, 2014                                      A. Gulko
                                                         Thomson Reuters
                                                               U. Joorde
                                                        Deutsche Telekom
                                                             J. Tantsura
                                                                Ericsson
                                                           March 3, 2014

                 mLDP In-Band Signaling with Wildcards
           draft-ietf-mpls-mldp-in-band-wildcard-encoding-01

Abstract

   There are scenarios in which an IP multicast tree traverses an MPLS
   domain.  In these scenarios, it can be desirable to convert the IP
   multicast tree "seamlessly" to an MPLS multipoint label switched path
   (MP-LSP) when it enters the MPLS domain, and then to convert it back
   to an IP multicast tree when it exits the MPLS domain.  Previous
   documents specify procedures that allow certain kinds of IP multicast
   trees (either "Source-Specific Multicast" trees or "Bidirectional
   Multicast" trees) to be attached to an MPLS Multipoint Label Switched
   Path (MP-LSP).  However, the previous documents do not specify
   procedures for attaching IP "Any Source Multicast" trees to MP-LSPs,
   nor do they specify procedures for aggregating multiple IP multicast
   trees onto a single MP-LSP.  This document specifies the procedures
   to support these functions.  It does so by defining "wildcard"
   encodings that make it possible to specify, when setting up an MP-
   LSP, that a set of IP multicast trees, or a shared IP multicast tree,
   should be attached to that MP-LSP.  Support for non-bidirectional IP
   "Any Source Multicast" trees is subject to certain applicability
   restrictions that are discussed in this document.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any

Wijnands, et al.        Expires September 4, 2014               [Page 1]
Internet-Draft    mLDP In-Band Signaling with Wildcards       March 2014

   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 4, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology and Definitions . . . . . . . . . . . . . . . . .   5
   3.  Wildcards in mLDP Opaque Value TLVs . . . . . . . . . . . . .   7
     3.1.  Encoding the Wildcards  . . . . . . . . . . . . . . . . .   7
     3.2.  Wildcard Semantics  . . . . . . . . . . . . . . . . . . .   7
     3.3.  Backwards Compatibility . . . . . . . . . . . . . . . . .   8
     3.4.  Applicability Restrictions with regard to ASM . . . . . .   8
   4.  Some Wildcard Use Cases . . . . . . . . . . . . . . . . . . .   9
     4.1.  PIM shared tree forwarding  . . . . . . . . . . . . . . .   9
     4.2.  IGMP/MLD Proxying . . . . . . . . . . . . . . . . . . . .  10
     4.3.  Selective Source mapping  . . . . . . . . . . . . . . . .  11
   5.  Procedures for Wildcard Source Usage  . . . . . . . . . . . .  11
   6.  Procedures for Wildcard Group Usage . . . . . . . . . . . . .  12
   7.  Determining the MP-LSP Root (Ingress LSR) . . . . . . . . . .  13
   8.  Anycast RP  . . . . . . . . . . . . . . . . . . . . . . . . .  13
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  13
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  13
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