Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
5 Basic principles
6 DQDB layer service model
7 Functional architecture
  7.1 Access method
  7.2 Slot generation function at the HOB
  7.3 Functions at a DQDB node supporting a CBR
      interface
8 Protocol data unit format
  8.1 PA slot
  8.2 PA segment
9 Protocol performance constraints
  9.1 Delay constraints
  9.2 Jitter constraints
  9.3 Synchronisation constraints
  9.4 Reconfiguration constraints
10 DQDB layer management interface in support of CBR
   service
Annex A (informative): Applications
  A.1 Identified applications
  A.2 Delay considerations
  A.3 Feasibility of bandwidth allocation
Annex B (normative): Protocol implementation
                     conformance statement
  B.1 Introduction
  B.2 Identification of the Implementation
  B.3 Identification of the protocol
  B.4 Global statement of conformance
  B.5 Major capabilities and features
Annex C (informative): Bibliography
History

Abstract

Details enhancements to the Distributed Queue Dual Bus (DQDB) access method as defined in IEEE Standard 802.6 [1] in order to provide Constant Bit Rate (CBR) connection types for the support of existing services (guaranteed constant bandwidth, specified transfer delay) on MANs, using semi-permanent connections in the range of n x 64 kbit/s to 2 Mbit/s bit rate capability.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	NA 5
Supersedes	PRETS 300278 : DEC 92