NERD: A Not-so-novel EID to RLOC Database
draft-lear-lisp-nerd-08

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Network Working Group                                            E. Lear
Internet-Draft                                        Cisco Systems GmbH
Intended status: Experimental                              March 6, 2010
Expires: September 7, 2010

               NERD: A Not-so-novel EID to RLOC Database
                      draft-lear-lisp-nerd-08.txt

Abstract

   LISP is a protocol to encapsulate IP packets in order to allow end
   sites to multihome without injecting routes from one end of the
   Internet to another.  This memo presents an experimental database and
   a discussion of methods to transport the mapping of EIDs to RLOCs to
   routers in a reliable, scalable, and secure manner.  Our analysis
   concludes that transport of of all EID/RLOC mappings scales well to
   at least 10^8 entries.

Status of this Memo

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Copyright Notice

   Copyright (c) 2010 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

Lear                    Expires September 7, 2010               [Page 1]
Internet-Draft       NERD LISP EID Mapping Transport          March 2010

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Lear                    Expires September 7, 2010               [Page 2]
Internet-Draft       NERD LISP EID Mapping Transport          March 2010

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Base Assumptions . . . . . . . . . . . . . . . . . . . . .  3
     1.2.  What is NERD?  . . . . . . . . . . . . . . . . . . . . . .  4
     1.3.  Glossary . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Theory of Operation  . . . . . . . . . . . . . . . . . . . . .  5
     2.1.  Database Updates . . . . . . . . . . . . . . . . . . . . .  5
     2.2.  Communications between ITR and ETR . . . . . . . . . . . .  6
     2.3.  Who are database authorities?  . . . . . . . . . . . . . .  6
   3.  NERD Format  . . . . . . . . . . . . . . . . . . . . . . . . .  7
     3.1.  NERD Record Format . . . . . . . . . . . . . . . . . . . .  9
     3.2.  Database Update Format . . . . . . . . . . . . . . . . . . 10
   4.  NERD Distribution Mechanism  . . . . . . . . . . . . . . . . . 10
     4.1.  Initial Bootstrap  . . . . . . . . . . . . . . . . . . . . 10
     4.2.  Retrieving Changes . . . . . . . . . . . . . . . . . . . . 11
   5.  Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
     5.1.  Database Size  . . . . . . . . . . . . . . . . . . . . . . 13
     5.2.  Router Throughput Versus Time  . . . . . . . . . . . . . . 14
     5.3.  Number of Servers Required . . . . . . . . . . . . . . . . 14
     5.4.  Security Considerations  . . . . . . . . . . . . . . . . . 16
       5.4.1.  Use of Public Key Infrastructures (PKIs) . . . . . . . 17
       5.4.2.  Other Risks  . . . . . . . . . . . . . . . . . . . . . 19
   6.  Why not use XML? . . . . . . . . . . . . . . . . . . . . . . . 20
   7.  Other Distribution Mechanisms  . . . . . . . . . . . . . . . . 20
     7.1.  What About DNS as a retrieval model? . . . . . . . . . . . 21
     7.2.  Use of BGP and LISP+ALT  . . . . . . . . . . . . . . . . . 22
     7.3.  Perhaps use a hybrid model?  . . . . . . . . . . . . . . . 22
   8.  Deployment Issues  . . . . . . . . . . . . . . . . . . . . . . 23
     8.1.  HTTP . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
   9.  Open Questions . . . . . . . . . . . . . . . . . . . . . . . . 23
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