Self-tuning Distributed Hash Table (DHT) for REsource LOcation And Discovery (RELOAD)
draft-ietf-p2psip-self-tuning-09

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P2PSIP Working Group                                          J. Maenpaa
Internet-Draft                                              G. Camarillo
Intended status: Standards Track                                Ericsson
Expires: February 11, 2014                               August 10, 2013

   Self-tuning Distributed Hash Table (DHT) for REsource LOcation And
                           Discovery (RELOAD)
                  draft-ietf-p2psip-self-tuning-09.txt

Abstract

   REsource LOcation And Discovery (RELOAD) is a peer-to-peer (P2P)
   signaling protocol that provides an overlay network service.  Peers
   in a RELOAD overlay network collectively run an overlay algorithm to
   organize the overlay, and to store and retrieve data.  This document
   describes how the default topology plugin of RELOAD can be extended
   to support self-tuning, that is, to adapt to changing operating
   conditions such as churn and network size.

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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   This Internet-Draft will expire on February 11, 2014.

Copyright Notice

   Copyright (c) 2013 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
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Maenpaa & Camarillo     Expires February 11, 2014               [Page 1]
Internet-Draft         Self-tuning DHT for RELOAD            August 2013

   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Introduction to Stabilization in DHTs . . . . . . . . . . . .   5
     3.1.  Reactive vs. Periodic Stabilization . . . . . . . . . . .   5
     3.2.  Configuring Periodic Stabilization  . . . . . . . . . . .   6
     3.3.  Adaptive Stabilization  . . . . . . . . . . . . . . . . .   7
   4.  Introduction to Chord . . . . . . . . . . . . . . . . . . . .   7
   5.  Extending Chord-reload to Support Self-tuning . . . . . . . .   9
     5.1.  Update Requests . . . . . . . . . . . . . . . . . . . . .   9
     5.2.  Neighbor Stabilization  . . . . . . . . . . . . . . . . .  10
     5.3.  Finger Stabilization  . . . . . . . . . . . . . . . . . .  11
     5.4.  Adjusting Finger Table Size . . . . . . . . . . . . . . .  11
     5.5.  Detecting Partitioning  . . . . . . . . . . . . . . . . .  11
     5.6.  Leaving the Overlay . . . . . . . . . . . . . . . . . . .  11
   6.  Self-tuning Chord Parameters  . . . . . . . . . . . . . . . .  12
     6.1.  Estimating Overlay Size . . . . . . . . . . . . . . . . .  12
     6.2.  Determining Routing Table Size  . . . . . . . . . . . . .  13
     6.3.  Estimating Failure Rate . . . . . . . . . . . . . . . . .  13
       6.3.1.  Detecting Failures  . . . . . . . . . . . . . . . . .  14
     6.4.  Estimating Join Rate  . . . . . . . . . . . . . . . . . .  15
     6.5.  Estimate Sharing  . . . . . . . . . . . . . . . . . . . .  15
     6.6.  Calculating the Stabilization Interval  . . . . . . . . .  16
   7.  Overlay Configuration Document Extension  . . . . . . . . . .  17
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  17
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
     9.1.  Message Extensions  . . . . . . . . . . . . . . . . . . .  18
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  18
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  18
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     11.2.  Informative References . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  21

1.  Introduction

   REsource LOcation And Discovery (RELOAD) [I-D.ietf-p2psip-base] is a
   peer-to-peer signaling protocol that can be used to maintain an
   overlay network, and to store data in and retrieve data from the