Lightweight Identifier-Locator Mapping Using FAST
draft-herbert-idloc-fast-00

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Last updated 2018-06-26
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INTERNET-DRAFT                                                T. Herbert
Intended Status: Informational                                Quantonium
Expires: December 2018                                                  
                                                                        
                                                           June 26, 2018

           Lightweight Identifier-Locator Mapping Using FAST 
                      draft-herbert-idloc-fast-00

Abstract

   This proposal provides a method to implement identifier to locator
   mapping in the datapath without the need to access an in-network
   mapping database or cache. Mappings are encoded in Firewall and
   Service Tickets (FAST) tickets as locator information. When a packet
   is sent by a mobile node, a ticket is attached that providers the
   locator to use in the return path. Peer nodes receive packets with
   these tickets, cache the tickets in a flow context, and then attach
   them to packets they send as reflected tickets. When a packet with a
   reflected ticket enters an identifier-locator domain, the ticket is
   parsed to extract the locator. That locator is then used to send the
   packet to the appropriate destination over a network overlay.

Status of this Memo

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Copyright and License Notice
 

T. Herbert             Expires December 28, 2018                [Page 1]
INTERNET DRAFT        draft-herbert-idloc-fast-00          June 26, 2018

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Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2  Background and motivation . . . . . . . . . . . . . . . . . . .  4
     2.1 Mapping Systems  . . . . . . . . . . . . . . . . . . . . . .  4
     2.2 hICN mobility proposal . . . . . . . . . . . . . . . . . . .  5
     2.3 Firewall and Service Tickets . . . . . . . . . . . . . . . .  5
   3  Solution Overview . . . . . . . . . . . . . . . . . . . . . . .  6
     3.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.2 Reference Topology . . . . . . . . . . . . . . . . . . . . .  7
     3.3 Basic packet flow  . . . . . . . . . . . . . . . . . . . . .  8
   4  Firewall and Service Tickets encoding . . . . . . . . . . . . .  9
     4.1 ILA locator encoding . . . . . . . . . . . . . . . . . . . . 10
     4.2 Locator index encoding . . . . . . . . . . . . . . . . . . . 10
   5  Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     5.1 Packet flow  . . . . . . . . . . . . . . . . . . . . . . . . 11
       5.1.1 Ticket requests  . . . . . . . . . . . . . . . . . . . . 11
         5.1.1.1 Fully qualified locators . . . . . . . . . . . . . . 12
         5.1.1.2 Unqualified locators . . . . . . . . . . . . . . . . 12
       5.1.2 First hop router processing  . . . . . . . . . . . . . . 12
       5.1.3 Transit to the peer  . . . . . . . . . . . . . . . . . . 12
       5.1.4 Peer reflection  . . . . . . . . . . . . . . . . . . . . 12
       5.1.5 Return path from peer  . . . . . . . . . . . . . . . . . 13
       5.1.6 Ingress into the origin network  . . . . . . . . . . . . 13
       5.1.7 Network overlay termination  . . . . . . . . . . . . . . 13
       5.1.8 Reception at origin of application . . . . . . . . . . . 14
     5.2 Fallback . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     5.3 Mobile events  . . . . . . . . . . . . . . . . . . . . . . . 14
     5.4 Interaction with expired tickets . . . . . . . . . . . . . . 15
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