IDPR as a Proposed Standard (RFC1477)
Original Publication Date: 1993-Jul-01
Included in the Prior Art Database: 2000-Sep-12
Internet Society Requests For Comment (RFCs)
This document contains a discussion of inter-domain policy routing (IDPR), including an overview of functionality and a discussion of experiments. The objective of IDPR is to construct and maintain routes between source and destination administrative domains, that provide user traffic with the services requested within the constraints stipulated for the domains transited.
Network Working Group M. Steenstrup
Request for Comments: 1477 BBN Systems and Technologies
IDPR as a Proposed Standard
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard. Distribution of this memo is
This document contains a discussion of inter-domain policy routing
(IDPR), including an overview of functionality and a discussion of
experiments. The objective of IDPR is to construct and maintain
routes between source and destination administrative domains, that
provide user traffic with the services requested within the
constraints stipulated for the domains transited.
Four documents describe IDPR in detail:
M. Steenstrup. An architecture for inter-domain policy routing.
RFC 1478. July 1993.
M. Steenstrup. Inter-domain policy routing protocol
specification: version 1. RFC 1479. July 1993.
H. Bowns and M. Steenstrup. Inter-domain policy routing
configuration and usage. Work in Progress. July 1991.
R. Woodburn. Definitions of managed objects for inter-domain
policy routing (version 1). Work in Progress. March 1993.
This is a product of the Inter-Domain Policy Routing Working Group of
the Internet Engineering Task Force (IETF).
2. The Internet Environment
As data communications technologies evolve and user populations grow,
the demand for internetworking increases. The Internet currently
comprises over 7000 operational networks and over 10,000 registered
networks. In fact, for the last several years, the number of
constituent networks has approximately doubled annually. Although we
do not expect the Internet to sustain this growth rate, we must
prepare for the Internet of five to ten years in the future.
Internet connectivity has increased along with the number of
component networks. Internetworks proliferate through
interconnection of autonomous, heterogeneous networks administered by
separate authorities. We use the term "administrative domain" (AD)
to refer to any collection of contiguous networks, gateways, links,
and hosts governed by a single administrative authority that selects
the intra-domain routing procedures and addressing schemes, specifies
service restrictions for transit traffic, and defines service
requirements for locally-generated traffic.
In the early 1980s, the Internet was purely hierarchical, with the
ARPANET as the single backbone. The current Internet possesses a
semblance of a hierarchy in the collection of backbone, regional,
metropolitan, and campus domains that compose it. However,
technological, economical, and political incentives have prompted the
introduction of inter-domain links outside of those in the strict
hierarchy. Hence, the Internet has the prop...