Multi-domainn Information Exposure using ALTO
draft-lachos-alto-md-info-exposure-00
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2020-07-13
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ALTO WG D. Lachos
Internet-Draft C. Rothenberg
Intended status: Informational Unicamp
Expires: January 14, 2021 Q. Xiang
Y. Yang
Yale University
B. Ohlman
Ericsson Research
S. Randriamasy
Nokia Bell Labs
F. Boten
Sprint
LM. Contreras
Telefonica
J. Zhang
Tongji University
K. Gao
Sichuan University
July 13, 2020
Multi-domainn Information Exposure using ALTO
draft-lachos-alto-md-info-exposure-00
Abstract
A common setting in emerging applications (e.g., data-intensive
science applications, flexible inter-domain routing, multi-domain
service function chaining) is that the traffic from a source to a
destination traverses multiple networks domains. Such multi-domain
applications can benefit from network information exposure using
ALTO. This document summarizes the benefits of using such multi-
domain information and discusses the ALTO design issues for gathering
it. Besides, it also presents key design requirements to be
addressed in order to realize the proposal of providing multi-domain
information by ALTO services. Finally, another important objective
of this document is to begin discussions into the ALTO WG concerning
potential new items to be considered for the re-charter.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Lachos, et al. Expires January 14, 2021 [Page 1]
Internet-Draft Multi-domain Info Exposure using ALTO July 2020
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on January 14, 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. What does "multi-domain information exposure" mean? . . . . . 3
3. What Information do Multi-domain applications need? . . . . . 5
3.1. Basic Formulation . . . . . . . . . . . . . . . . . . . . 6
4. What are the ALTO issues of gathering multi-domain
information? . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1. Communication Mechanisms . . . . . . . . . . . . . . . . 8
4.1.1. Server-to-Client ALTO communication . . . . . . . . . 8
4.1.2. Domain connectivity discovery . . . . . . . . . . . . 8
4.1.3. ALTO server discovery . . . . . . . . . . . . . . . . 8
4.2. Conceptual Query Interfaces and Data Representation . . . 8
4.2.1. Single-domain composition . . . . . . . . . . . . . . 8
4.2.2. Simple resource query language . . . . . . . . . . . 9
4.3. Computation Model . . . . . . . . . . . . . . . . . . . . 9
4.3.1. Scalability . . . . . . . . . . . . . . . . . . . . . 9
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