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APT: A Practical Transit Mapping Service

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Dan Jen , Michael Meisel , Dan Massey , Lan Wang , Beichuan Zhang , Lixia Zhang
Last updated 2007-11-19
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The size of the global routing table is a rapidly growing problem. Several solutions have been proposed. These solutions commonly divide the Internet into two address spaces, one for determining the delivery location, and one to use during transit. Packets destined for delivery addresses are tunneled through the default-free zone (DFZ), which uses only transit addresses. For this process to work, there must be a mapping service that can supply an appropriate destination transit address for any given delivery address. We present a design for such a mapping service. We adhere to a "do no harm" design philosophy: maintain all desirable features of the current architecture without negatively affecting its security or reliability. Our design aims to minimize delay and prevent loss in packet encapsulation, minimize the number of modifications to existing hardware, minimize the number of new devices, and keep the level of control traffic manageable.


Dan Jen
Michael Meisel
Dan Massey
Lan Wang
Beichuan Zhang
Lixia Zhang

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