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ST2+ over ATM Protocol Specification - UNI 3.1 Version (RFC2383)

IP.com Disclosure Number: IPCOM000002955D
Original Publication Date: 1998-Aug-01
Included in the Prior Art Database: 2019-Feb-15
Document File: 50 page(s) / 53K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Suzuki: AUTHOR

Related Documents

10.17487/RFC2383: DOI

Abstract

This document specifies an ATM-based protocol for communication between ST2+ agents. This memo provides information for the Internet community. It does not specify an Internet standard of any kind.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 4% of the total text.

Network Working Group M. Suzuki Request for Comments: 2383 NTT Category: Informational August 1998

ST2+ over ATM Protocol Specification - UNI 3.1 Version

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 (1998). All Rights Reserved.

Abstract

This document specifies an ATM-based protocol for communication between ST2+ agents. The ST2+ over ATM protocol supports the matching of one hop in an ST2+ tree-structure stream with one ATM connection. In this document, ATM is a subnet technology for the ST2+ stream.

The ST2+ over ATM protocol is designed to achieve resource- reservation communications across ATM and non-ATM networks, to extend the UNI 3.1/4.0 signaling functions, and to reduce the UNI 4.0 LIJ signaling limitations.

The specifications of the ST2+ over ATM protocol consist of a revision of RFC 1819 ST2+ and specifications of protocol interaction between ST2+ and ATM on the user plane, management plane, and control plane which correspond to the three planes of the B-ISDN protocol reference model.

1. Introduction

1.1 Purpose of Document

The purpose of this document is to specify an ATM-based protocol for communication between ST2+ agents.

The ST2+ over ATM protocol is designed to support the matching of one hop in an ST2+ tree-structure stream with one ATM connection; it is not designed to support an entire ST2+ tree-structure stream with a point-to-multipoint ATM connection only.

Suzuki Informational [Page 1]

RFC 2383 ST2+ over ATM August 1998

Therefore, in this document, ATM is only a subnet technology for the ST2+ stream. This specification is designed to enable resource- reservation communications across ATM and non-ATM networks.

1.2 Features of ST2+ over ATM Protocol

o Enables resource-reservation communications across ATM and non-ATM networks.

ATM native API supports resource-reservation communications only within an ATM network; it cannot support interworking with non-ATM networks. This is because

- ATM native API cannot connect terminals without an ATM interface.

- ATM native API does not support IP addressing and SAP (port) addressing systems.

o Extends UNI 3.1/4.0 signaling functions.

ST2+ SCMP supports MTU-size negotiation at all hops in an ST2+ tree-structure stream. UNI 3.1/4.0 supports only max CPCS_SDU (i.e., MTU) negotiation with the called party of a point-to-point call or with the first leaf of a point-to-multipoint call.

o Reduces UNI 4.0 LIJ signaling limitations.

The ST2+ over ATM protocol supports UNI 4.0 LIJ Call Identifier notification from the root to the leaf by using an ST2+ SCMP extension. LIJ Call Identifier discovery at the leaf is one of the major unsolved problems of UNI 4.0, and the ST2+ over ATM protocol provides a solution.

Note: The UNI 3.1 version of the ST2+ over ATM protocol does not support the above feature. It will be supported...

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