RSVP Operation Over IP Tunnels (RFC2746)
Original Publication Date: 2000-Jan-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
A. Terzis: AUTHOR [+4]
This document describes an approach for providing RSVP protocol services over IP tunnels. We briefly describe the problem, the characteristics of possible solutions, and the design goals of our approach. We then present the details of an implementation which meets our design goals.
Network Working Group A. Terzis
Request for Comments: 2746 UCLA
Category: Standards Track J. Krawczyk
RSVP Operation Over IP Tunnels
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright (C) The Internet Society (2000). All Rights Reserved.
This document describes an approach for providing RSVP protocol
services over IP tunnels. We briefly describe the problem, the
characteristics of possible solutions, and the design goals of our
approach. We then present the details of an implementation which
meets our design goals.
IP-in-IP "tunnels" have become a widespread mechanism to transport
datagrams in the Internet. Typically, a tunnel is used to route
packets through portions of the network which do not directly
implement the desired service (e.g. IPv6), or to augment and modify
the behavior of the deployed routing architecture (e.g. multicast
routing, mobile IP, Virtual Private Net).
Many IP-in-IP tunneling protocols exist today. [IP4INIP4] details a
method of tunneling using an additional IPv4 header. [MINENC]
describes a way to reduce the size of the "inner" IP header used in
[IP4INIP4] when the original datagram is not fragmented. The generic
tunneling method in [IPV6GEN] can be used to tunnel either IPv4 or
IPv6 packets within IPv6. [RFC1933] describes how to tunnel IPv6
datagrams through IPv4 networks. [RFC1701] describes a generic
routing encapsulation, while [RFC1702] applies this encapsulation to
IPv4. Finally, [ESP] describes a mechanism that can be used to
tunnel an encrypted IP datagram.
From the perspective of traditional best-effort IP packet delivery, a
tunnel behaves as any other link. Packets enter one end of the
tunnel, and are delivered to the other end unless resource overload
or error causes them to be lost.
The RSVP setup protocol [RFC2205] is one component of a framework
designed to extend IP to support multiple, controlled classes of
service over a wide variety of link-level technologies. To deploy
this technology with maximum flexibility, it is desi...