Simple Virtual Aggregation (S-VA)
draft-ietf-grow-simple-va-09

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Document Type Active Internet-Draft (grow WG)
Last updated 2012-06-21 (latest revision 2012-06-05)
Stream IETF
Intended RFC status Informational
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Send notices to grow-chairs@tools.ietf.org, draft-ietf-grow-simple-va@tools.ietf.org
GROW Working Group                                             R. Raszuk
Internet-Draft                                                   NTT MCL
Intended status: Informational                                  J. Heitz
Expires: December 7, 2012                                       Ericsson
                                                                   A. Lo
                                                                  Arista
                                                                L. Zhang
                                                                    UCLA
                                                                   X. Xu
                                                                  Huawei
                                                            June 5, 2012

                   Simple Virtual Aggregation (S-VA)
                    draft-ietf-grow-simple-va-09.txt

Abstract

   The continued growth in the Default Free Routing Table (DFRT)
   stresses the global routing system in a number of ways.  One of the
   most costly stresses is Forwarding Information Base (FIB) size: ISPs
   often must upgrade router hardware simply because the FIB has run out
   of space, and router vendors must design routers that have adequate
   FIB.

   FIB suppression is an approach to relieving stress on the FIB by NOT
   loading selected RIB entries into the FIB.  Simple Virtual
   Aggregation (S-VA) is a simple form of Virtual Aggregation (VA) that
   allows any and all edge routers to shrink their RIB and FIB
   requirements substantially and therefore increase their useful
   lifetime.

   S-VA does not increase FIB requirements for core routers.  S-VA is
   extremely easy to configure considerably more so than the various
   tricks done today to extend the life of edge routers.  S-VA can be
   deployed autonomously by an ISP (cooperation between ISPs is not
   required), and can co-exist with legacy routers in the ISP.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

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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
   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 December 7, 2012.

Copyright Notice

   Copyright (c) 2012 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
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   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.

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Scope of this Document . . . . . . . . . . . . . . . . . .  5
     1.2.  Requirements notation  . . . . . . . . . . . . . . . . . .  5
     1.3.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  6
   2.  Operation of S-VA  . . . . . . . . . . . . . . . . . . . . . .  6
   3.  Deployment considerations  . . . . . . . . . . . . . . . . . .  8
   4.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  9
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   6.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . .  9
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     7.1.  Normative References . . . . . . . . . . . . . . . . . . . 10
     7.2.  Informative References . . . . . . . . . . . . . . . . . . 10
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 10

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