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Simple Protocol for Robust IP/*/IP Tunnel Endpoint MTU Determination (sprite-mtu)

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Fred Templin
Last updated 2007-11-16
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This Internet-Draft is no longer active.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 nominal Maximum Transmission Unit (MTU) of today's Internet has become 1500 bytes, but IP/*/IP tunneling mechanisms impose an encapsulation overhead that can reduce the effective path MTU to smaller values. Additionally, existing tunneling mechanisms are limited in their ability to support larger MTUs. This document specifies a simple protocol for robust IP/*/IP tunnel endpoint MTU determination (sprite-mtu).


Fred Templin

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