Generic Autonomic Signaling Protocol Application Program Interface (GRASP API)
draft-ietf-anima-grasp-api-02
Network Working Group B. Carpenter
Internet-Draft Univ. of Auckland
Intended status: Informational B. Liu, Ed.
Expires: January 1, 2019 Huawei Technologies
W. Wang
X. Gong
BUPT University
June 30, 2018
Generic Autonomic Signaling Protocol Application Program Interface
(GRASP API)
draft-ietf-anima-grasp-api-02
Abstract
This document is a conceptual outline of an application programming
interface (API) for the Generic Autonomic Signaling Protocol (GRASP).
Such an API is needed for Autonomic Service Agents (ASA) calling the
GRASP protocol module to exchange autonomic network messages with
other ASAs.
Status of This Memo
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. GRASP API for ASA . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Design Principles . . . . . . . . . . . . . . . . . . . . 4
2.2. Asynchronous Operations . . . . . . . . . . . . . . . . . 5
2.3. API definition . . . . . . . . . . . . . . . . . . . . . 6
2.3.1. Parameters and data structures . . . . . . . . . . . 6
2.3.2. Registration . . . . . . . . . . . . . . . . . . . . 9
2.3.3. Discovery . . . . . . . . . . . . . . . . . . . . . . 12
2.3.4. Negotiation . . . . . . . . . . . . . . . . . . . . . 12
2.3.5. Synchronization and Flooding . . . . . . . . . . . . 17
2.3.6. Invalid Message Function . . . . . . . . . . . . . . 21
3. Example Logic Flows . . . . . . . . . . . . . . . . . . . . . 21
4. Security Considerations . . . . . . . . . . . . . . . . . . . 21
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 22
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 22
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.1. Normative References . . . . . . . . . . . . . . . . . . 22
7.2. Informative References . . . . . . . . . . . . . . . . . 22
Appendix A. Error Codes . . . . . . . . . . . . . . . . . . . . 23
Appendix B. Change log [RFC Editor: Please remove] . . . . . . . 24
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 26
1. Introduction
As defined in [I-D.ietf-anima-reference-model], the Autonomic Service
Agent (ASA) is the atomic entity of an autonomic function, and it is
instantiated on autonomic nodes. When ASAs communicate with each
other, they should use the Generic Autonomic Signaling Protocol
(GRASP) [I-D.ietf-anima-grasp].
As the following figure shows, a GRASP implementation could contain
two major sub-layers. The bottom is the GRASP base protocol module,
which is only responsible for sending and receiving GRASP messages
and maintaining shared data structures. The upper layer contains
some extended functions based upon GRASP basic protocol. For
example, [I-D.liu-anima-grasp-distribution] describes a possible
extended function.
It is desirable that ASAs can be designed as portable user-space
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