Applicability of the Babel routing protocol
draft-chroboczek-babel-applicability-00

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Network Working Group                                      J. Chroboczek
Internet-Draft                         IRIF, University of Paris-Diderot
Intended status: Informational                         February 15, 2016
Expires: August 18, 2016

              Applicability of the Babel routing protocol
                draft-chroboczek-babel-applicability-00

Abstract

   This document describes some application areas where the Babel
   routing protocol [RFC6126] has been found useful.

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   This Internet-Draft will expire on August 18, 2016.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Existing deployments of Babel . . . . . . . . . . . . . . . .   2
     2.1.  Hybrid networks . . . . . . . . . . . . . . . . . . . . .   2
     2.2.  Large scale overlay networks  . . . . . . . . . . . . . .   2
     2.3.  Small unmanaged networks  . . . . . . . . . . . . . . . .   3
   3.  Potential deployments of Babel  . . . . . . . . . . . . . . .   3
     3.1.  Pure mesh networks  . . . . . . . . . . . . . . . . . . .   3
   4.  Application Areas where Babel is not recommended  . . . . . .   3
     4.1.  Large, stable networks  . . . . . . . . . . . . . . . . .   3
     4.2.  Low-power networks  . . . . . . . . . . . . . . . . . . .   3
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   Babel [RFC6126] is a loop-avoiding distance-vector routing protocol
   that aims to be robust in a variety of environments.

   This document describes a few areas where Babel has been found
   useful.  It is structured as follows.  In Section 2, we describe
   application areas where Babel has been successfully deployed.  In
   Section 3, we describe application areas where Babel has not been
   deployed, but is likely to work well.  In Section 4, we describe
   application areas where deployment of Babel is not recommended
   because better alternatives are available.

2.  Existing deployments of Babel

2.1.  Hybrid networks

   Babel is able to deal with both classical, prefix-based ("Internet-
   style") routing and flat ("mesh-style") routing.  Because of that, it
   has seen a number of succesful deployments in medium-sized hybrid
   networks, networks that combine a wired, aggregated backbone with
   meshy wireless bits.  No other routing protocol known to us is
   similarly robust and efficient in this particular type of network.

2.2.  Large scale overlay networks

   The algorithms used by Babel allow it to remain relatively stable in
   the presence of unstable metrics, even in the presence of a feedback
   loop.  For this reason, it has been successfully deployed in large
   scale overlay networks, built out of thousands of tunnels spanning
   continents, where it is used with a metric computed from links'
   latencies [DELAY-BASED].

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2.3.  Small unmanaged networks

   Because of its small size and simple configuration, Babel has been
   deployed in small, unmanaged networks (three to five routers), where
   it serves as a more efficient replacement for RIP [RFC2453].

3.  Potential deployments of Babel

   There are a number of areas where Babel has not seen much deployment
   yet, but where we expect it to be applicable.
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