Reducing Power Consumption using BGP path selection
draft-mjsraman-rtgwg-bgp-power-path-04

RTGWG Working Group                                        Shankar Raman
Internet-Draft                                Balaji Venkat Venkataswami
Intended Status: Experimental RFC                           Gaurav Raina
Expires: October 30, 2013                                    Vasan Srini
                                                              IIT Madras
                                                          April 28, 2013

          Reducing Power Consumption using BGP path selection
                 draft-mjsraman-rtgwg-bgp-power-path-04

Abstract

   In this paper, we propose a framework to reduce the aggregate power
   consumption of the Internet using a collaborative approach between
   Autonomous Systems (AS). We identify the low-power paths among the AS
   and then use suitable modifications to the BGP path selection
   algorithm to route the packets along the paths. Such low-power paths
   can be identified by using the consumed-power-to-available-bandwidth
   (PWR) ratio as an additional parameter in the BGP Path Selection
   Algorithm. For re-routing the data traffic through these low-power
   paths, the power based best path is selected and advertised as per
   the modified algorithm proposed in this document. Extensions to the
   Border Gateway Protocol (BGP) can be used to disseminate the PWR
   ratio metric among the AS thereby creating a collaborative approach
   to reduce the power consumption. The feasibility of our approaches is
   illustrated by applying our algorithm to a subset of the Internet.
   The techniques proposed in this paper for the Inter-AS power
   reduction require minimal modifications to the existing features of
   the Internet. The proposed techniques can be extended to other levels
   of Internet hierarchy, such as Intra-AS paths, through suitable
   modifications. A recent addition is the use of this method in AIGP
   domains and also the use of power source data in the calculation of
   low power paths using the BGP path selection algorithm.

Status of this Memo

   This Internet-Draft is submitted to IETF 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.

 

Shankar Raman.et.al     Expires October 30, 2013                [Page 1]
INTERNET DRAFT  Reducing power using BGP path selection   April 28, 2013

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Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1 Low-power routers and switches . . . . . . . . . . . . . . .  4
     1.2 Power reduction using routing and traffic engineering  . . .  4
     1.1  Terminology . . . . . . . . . . . . . . . . . . . . . . . .  5
   2.  Methodology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.1 Pre-requisites for the Proposed Method . . . . . . . . . . .  5
       2.1.1 PWR ratio calculation  . . . . . . . . . . . . . . . . .  5
         2.1.1.1 Power Sources as additional factor . . . . . . . . .  7
         2.1.1.2 Earlier method of computing numerator of PWR
                 ratio. . . . . . . . . . . . . . . . . . . . . . . .  8
     2.2 LOW-POWER PATHS  . . . . . . . . . . . . . . . . . . . . . .  9
         2.2.0.1 Current BGP Best Path Selection Algorithm  . . . . . 10
         2.2.0.2 Algorithm 1 on ASBR  . . . . . . . . . . . . . . . . 12
         2.2.0.3 Modified Algorithm 0 on all BGP routers  . . . . . . 13
     2.3 Implementation notes and Discussion  . . . . . . . . . . . . 14
     2.4 Applicability within ASes within a single Admin Domain . . . 16