Open Pluggable Edge Services (OPES) Treatment of IAB Considerations
RFC 3914

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 05

Network Working Group                                          A. Barbir
Request for Comments: 3914                               Nortel Networks
Category: Informational                                      A. Rousskov
                                                 The Measurement Factory
                                                            October 2004

           Open Pluggable Edge Services (OPES) Treatment of
                           IAB Considerations

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2004).

Abstract

   IETF Internet Architecture Board (IAB) expressed nine architecture-
   level considerations for the Open Pluggable Edge Services (OPES)
   framework.  This document describes how OPES addresses those
   considerations.

Babir & Rousskov             Informational                      [Page 1]
RFC 3914          OPES Treatment of IAB Considerations      October 2004

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Consideration (2.1) 'One-party consent'  . . . . . . . . . . .  3
   4.  Consideration (2.2) 'IP-layer communications'  . . . . . . . .  4
   5.  Notification Considerations  . . . . . . . . . . . . . . . . .  5
       5.1.  Notification versus trace. . . . . . . . . . . . . . . .  6
       5.2.  An example of an OPES trace for HTTP . . . . . . . . . .  8
       5.3.  Consideration (3.1) 'Notification' . . . . . . . . . . .  9
       5.4.  Consideration (3.2) 'Notification' . . . . . . . . . . . 10
   6.  Consideration (3.3) 'Non-blocking' . . . . . . . . . . . . . . 10
   7.  Consideration (4.1) 'URI resolution' . . . . . . . . . . . . . 11
   8.  Consideration (4.2) 'Reference validity' . . . . . . . . . . . 11
   9.  Consideration (4.3) 'Addressing extensions'  . . . . . . . . . 12
   10. Consideration (5.1) 'Privacy'  . . . . . . . . . . . . . . . . 12
   11. Consideration 'Encryption' . . . . . . . . . . . . . . . . . . 12
   12. Security Considerations  . . . . . . . . . . . . . . . . . . . 13
   13. Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . 13
   14. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
       14.1. Normative References . . . . . . . . . . . . . . . . . . 14
       14.2. Informative References . . . . . . . . . . . . . . . . . 14
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15
   Full Copyright Statement . . . . . . . . . . . . . . . . . . . . . 16

1.  Introduction

   The Open Pluggable Edge Services (OPES) architecture [RFC3835],
   enables cooperative application services (OPES services) between a
   data provider, a data consumer, and zero or more OPES processors.
   The application services under consideration analyze and possibly
   transform application-level messages exchanged between the data
   provider and the data consumer.

   In the process of chartering OPES, the IAB made recommendations on
   issues that OPES solutions should be required to address.  These
   recommendations were formulated in the form of a specific IAB
   considerations document [RFC3238].  In that document, IAB emphasized
   that its considerations did not recommend specific solutions and did
   not mandate specific functional requirements.  Addressing an IAB
   consideration may involve showing appropriate protocol mechanisms or
   demonstrating that the issue does not apply.  Addressing a
   consideration does not necessarily mean supporting technology implied
   by the consideration wording.

Babir & Rousskov             Informational                      [Page 2]
RFC 3914          OPES Treatment of IAB Considerations      October 2004

   The primary goal of this document is to show that all formal IAB
   recommendations are addressed by OPES, to the extent that those
   considerations can be addressed by an IETF working group.  The
   limitations of OPES working group to address certain aspects of IAB
   considerations are also explicitly documented.

   IAB considerations document [RFC3238] contains many informal
   recommendations.  For example, while the IAB informally requires OPES
   architecture to "protect end-to-end data integrity by supporting
   end-host detection and response to inappropriate behavior by OPES
   intermediaries", the IAB has chosen to formalize these requirements
   via a set of more specific recommendations, such as Notification
   considerations addressed in Section 5.3 and Section 5.4 below.  OPES
   framework addresses informal IAB recommendations by addressing
   corresponding formal considerations.

   There are nine formal IAB considerations [RFC3238] that OPES has to
   address.  In the core of this document are the corresponding nine