Constructing power optimal P2MP TE-LSPs within an AS
draft-mjsraman-pce-power-replic-00

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PCE Working Group                                          Shankar Raman
Internet-Draft                                Balaji Venkat Venkataswami
Intended Status: Experimental RFC                           Gaurav Raina
Expires: September 1, 2012                                  I.I.T Madras
                                                       February 29, 2012

          Constructing power optimal P2MP TE-LSPs within an AS
                   draft-mjsraman-pce-power-replic-00

Abstract

   Power consumption in multicast replication operations is an area of
   concern and choosing suitable replication points that can decrease
   power consumption overall assumes importance. Multicast replication
   capacity is an attribute of every line card of major routers and
   multi-layer switches that support multicast in the core of an
   Internet Service Provider (ISP) or an enterprise network.  

   Currently multicast replication points on Point-to-Multipoint Traffic
   Engineering Label-Switched-Paths (P2MP TE-LSPs) consume power while
   delivering multiple output streams of data from a given input stream.
   The multicast distribution trees are constructed without any regard
   for a proper placement of the replication points and consequent
   optimal power consumption at these points. 

   This results in overloading certain routers while under-utilizing
   others. An optimal usage of these replication resources could
   substantially reduce power consumption on these routers. In this
   paper, we propose a mechanism by which P2MP TE-LSPs are constructed
   for carrying multicast traffic across multiple areas within a given
   AS. We propose that these LSPs be built by using the advertisements
   of the power-replication capacity ratio advertised by fine grained
   components such as multicast capable line-cards of routers and multi-
   layer switches deployed within an AS. 

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
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   Internet-Drafts are working documents of the Internet Engineering
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Shankar Raman et.al.   Expires September 1, 2012                [Page 1]
INTERNET DRAFT    Constructing Power Optimal P2MP-LSPs February 29, 2012

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Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Methodology of the proposal  . . . . . . . . . . . . . . . . .  4
     2.1 Discussion of this scheme  . . . . . . . . . . . . . . . . .  6
   3 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
   3  Security Considerations . . . . . . . . . . . . . . . . . . . . 10
   4  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 10
   5  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     5.1  Normative References  . . . . . . . . . . . . . . . . . . . 10
     5.2  Informative References  . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 11

 

Shankar Raman et.al.   Expires September 1, 2012                [Page 2]
INTERNET DRAFT    Constructing Power Optimal P2MP-LSPs February 29, 2012

1  Introduction

   Multicast traffic across multiple areas within a given AS, may be
   carried using P2MP TE-LSPs. The traffic may be carried from a ingress
   Provider Edge (PE) router to several egress PEs, example in a
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