Lightweight Identifier-Locator Mapping Using FAST

Document Type Expired Internet-Draft (individual)
Last updated 2018-12-28 (latest revision 2018-06-26)
Stream (None)
Intended RFC status (None)
Expired & archived
plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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.


Tom Herbert (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)