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IEEE standards for local and metropolitan area networks: distributed queue dual bus (DQDB) subnetwor - IEEE Std 802.6-1990

[pdf]

Status: Archived , Withdrawn

Local and Metropolitan Area Networks Collection: [Description Index] - [PDF index]

Content

  • 1 Introduction   ▶
    • 1.1 Scope
    • 1.2 Applicability
    • 1.3 Definitions
    • 1.4 Acronyms
    • 1.5 References
    • 1.6 Conformance
    • 1.7 Notation   ▶
      • Service Specification Method and Notation
      • 1.7.2 State Machine Notation
    • 1.8 Organization of the Standard
  • Overview   ▶
    • 2.1 DQDB Subnetwork   ▶
      • Dual Bus Architecture
      • Access Control to the Dual Bus Subnetwork
      • Provision of DQDB Layer Services
      • Performance of the Distributed Queue
      • DQDB Subnetwork Configuration Control
    • Node Functional Architecture   ▶
      • Physical Layer Functions
      • DQDB Layer Functions
  • DQDB Layer Service Definition   ▶
    • MAC Service Provided to the LLC Sublayer   ▶
      • 3.1.1 MA-UNITDATA request
      • 3.1.2 MA-UNITDATA indication
      • 3.1.3 MA-STATUS indication
    • 3.2 Isochronous Service   ▶
      • 3.2.1 ISU-DATA request
      • 3.2.2 ISU-DATA indication
    • Connection-Oriented Data Service
  • Physical Layer Service Definition   ▶
    • 4.1 Ph-DATA request
    • 4.2 Ph-DATA indication
    • indication primitives   ▶
      • Node Not Performing Head of Bus Functions
      • Node Performing Head of Bus Functions
    • 4.4 Ph-TIMING-SOURCE request
    • 4.5 Ph-TIMING-MARK indication
    • 4.6 Ph-STATUS indication
  • 5 DQDB Node Functional Description   ▶
    • Provision of MAC Service to LLC   ▶
      • MAC Convergence Function (MCF) Block
      • Queued Arbitrated (QA) Functions Block
      • MAC Sublayer Service Management Functions
    • Provision of Isochronous Service   ▶
      • Isochronous Convergence Function (ICF) Block
      • Pre-Arbitrated (PA) Functions Block
      • Isochronous Service Provider Management Functions
    • Provision of Other Services   ▶
      • Connection-Oriented Data Service
    • 5.4 Common Functions   ▶
      • Octets
      • Subnetwork Configuration Control Function
      • 5.4.3 Head of Bus Functions
      • 5.4.4 MID Page Allocation Functions
    • DQDB Layer Protocol Data Unit (PDU) Formats   ▶
      • 6.1 Ordering Principles
      • 6.2 Slot   ▶
        • Access Control Field (ACF)
      • Queued Arbitrated (&A) Slot   ▶
        • 6.3.1 QA Segment
      • 6.4 Pre-Arbitrated (PA) Slot   ▶
        • 6.4.1 PA Segment
      • 6.5 Transfer of MAC Service Data Unit (MSDU)   ▶
        • 6.5.1 Initial MAC Protocol Data Unit (IMPDU)
        • Derived MAC Protocol Data Unit (DMPDU)
      • Protocol Data Unit (PDU) Hierarchy for MAC Service
    • DQDB Layer Facilities   ▶
      • 7.1 Timers   ▶
        • Reassembly IMPDU Timer (RIT)
        • Head of Bus Arbitration Timer (Timer-H)
      • 7.2 Counters   ▶
        • Request Counter (REQ-1-CNTR)
        • Countdown Counter (CD-I-CNTR)
        • Local Request Queue Counter (REQJ-Q)
        • Page Counter (PAGE-CNTR)
        • Bandwidth Balancing Counter (BWB-CNTR)
        • (TX-SEQUENCE-NUM)
      • 7.3 System Parameters   ▶
        • Reassembly IMPDU Timer Period (RIT-PERIOD)
        • (Timer-H-PERIOD)
        • 7.3.3 Quality of Service Map (QOS-MAP)
        • (RESERVED-MID-PAGES)
        • Maximum Number of MID Pages (MAX-MID-PAGES)
        • Bandwidth Balancing Modulus (BWB-MOD)
      • 7.4 Flags   ▶
        • Configuration Control Flag (CC-12-CONTROL)
        • Default Configuration Control Flag (CC-D2-CONTROL)
        • CRC32 Generation Flag (CRC32-GEN-CONTROL)
        • CRC32 Checking Flag (CRC32-CHECK-CONTROL)
      • Resource Status Indicators   ▶
        • Configuration Control Status Indicator (CC-STATUS)
        • Head of Bus Operation Indicator (HOB-OPERATION)
        • Link Status Indicator (LINK-STATUS)
        • External Timing Source Status Indicator (ETS-STATUS)
  • 8 DQDB Layer Operation   ▶
    • 8.1 Distributed Queue Operation   ▶
      • Distributed Queue State Machine (DQSM)
      • 8.1.2 REQ Queue Machine (RQM)
      • Bandwidth Balancing Machine (BWBM)
    • 8.2 Reassembly Operation   ▶
      • Reassembly State Machine (RSM)
    • Segment Header Check Sequence Processing
  • DQDB Layer Management Interface (LMI)   ▶
    • DQDB Layer Management Interface (LMI) Model   ▶
      • DQDB LMI Primitives
    • VCI Management Functions   ▶
      • 9.2.1 LM-ACTION invoke (CL-VCI-ADD)
      • 9.2.2 LM-ACTION invoke (CL-VCI-DELETE)
      • LM-ACTION invoke (OPEN-CE-ICF)
      • LM-ACTION invoke (OPEN-CE-COCF)
      • LM-ACTION invoke (CLOSE-CE)
      • LM-ACTION invoke (PA-VCI-ADD-HOB)
      • LM-ACTION invoke (PA-VCI-DELETE-HOB)
    • Header Extension Management Functions   ▶
      • LM-ACTION invoke (HEXT-INSTAL)
      • LM-ACTION invoke (NEXT-PURGE)
    • Message Identifier (MID) Management Functions   ▶
      • LM-ACTION invoke (MID-PAGE-GET)
      • LM-ACTION reply (MID-PAGE-GET)
      • LM-ACTION invoke (MID-PAGE-RELEASE)
      • LM-ACTION reply (MID-PAGE-RELEASE)
      • LM-EVENT notify (MID-PAGE-LOST)
    • 9.5 Address Management Functions   ▶
      • 9.5.1 LM-ACTION invoke (ADDRESS-ADD)
      • 9.5.2 LM-ACTION invoke (ADDRESS-DELETE)
      • System Parameter Management Functions
      • Configuration Control Function Management Functions   ▶
        • LM-SET invoke (CC-FLAG)
      • CRC32 Control Flag Management Functions   ▶
        • 9.8.1 LM-SET invoke (CRC32-FLAG)
      • Other Management Functions   ▶
        • LM-ACTION invoke (RESET)
      • Primitives
  • 10 DQDB Layer Management Protocol   ▶
    • 10.1 DQDB Layer Management Information Octets   ▶
      • Bus Identification Field (BIF)
      • SubNetwork Configuration Field (SNCF)
      • MID Page Allocation Field (MPAF)
    • 10.2 Configuration Control Protocol   ▶
      • Functions in a Node
      • Function Type
      • Generation of Subnetwork Configuration Field Subfields
      • Default Configuration Control State Machine
      • Configuration Control Type 2 State Machine
      • Configuration Control Type 1 State Machine
    • 10.3 MID Page Allocation Protocol   ▶
      • Page Counter State Machine (PCSM) for Head of Bus A
      • Page Reservation State Machine for Head of Bus A
      • Page Counter Modulus Operation for Head of Bus A
      • Page Counter State Machine (PCSM) for Bus A or Bus B
      • 10.3.5 Keep Page State Machine (KPSM)
      • Get Page State Machine (GPSM)
  • 11 Physical Layer Principles of Operation   ▶
    • 11.1 Architectural Considerations
    • 11.2 Node Configuration
    • 11.3 Duplex Operation of the Transmission Link   ▶
      • Physical Layer Connection State Machine (PLCSM)
    • 11.4 Node Synchronization
    • 11.5 Physical Layer Maintenance Functions   ▶
      • Fault Detection within Nodes
      • 11.5.2 Node Isolation
      • Fault Detection on Transmission Links
      • 11.5.4 Nodes Not Supporting Head of Bus Functions
    • 11.6 Physical Layer Facilities   ▶
      • Control Flag
      • Head of Bus Capable Flag (HOB-CAPABLE)
    • Systems
    • 12.1 Introduction   ▶
      • DS3 Relationship to the PLCP
      • Transmission System Relationship to the PLCP
    • 12.2 The PLCP Frame Format
    • 12.3 PLCP Field Definitions   ▶
      • Framing Octets Al, A2)
      • Path Overhead Identifier (P11-PO)
      • 12.3.3 PLCP Path Overhead Octets
      • 12.3.4 Trailer Nibbles
    • 12.4 PLCP Behavior During Faults
    • 12.5 PLCP Behavior During DQDB Layer out of Service
    • 12.6 PLCP Framing   ▶
      • Link Status Signal Operations Table
      • 12.6.2 Physical Layer Frame Timing Operations Table
  • Scope of IEEE Std
  • Layer Service Model
  • Time Sequence Diagram
  • Dual Bus Architecture
  • Example Access Unit Attachment
  • Queue Formation on Bus A
  • Queueing for Access (Bus A)
  • Gaining Access (Bus A)
  • DQDB Layer Services
  • IMPDU
  • Format of a DMPDU
  • Transfer of an IMPDU
  • Looped Bus Topology
  • DQDB Node Functional Architecture
  • Physical Layer Services (at each node)
  • Node Not Performing Head of Bus Functions
  • Node Performing Head of Bus A Function
  • Node Performing Head of Bus B Function
  • Node Performing Head of Bus A and Head of Bus B Functions
  • DQDB Node Functional Architecture
  • DQDB Layer Functions to Support LLC Service
  • MCF Transmit Functions
  • Segmentation of an IMPDU of Greater than 88 Octets Length   ▶
    • Block
  • MCF Receive Functions
  • Receive Interaction between QA Functions Block and MCF Block
  • QA Functions Block Transmit Functions   ▶
    • QA Functions Block
    • Common Functions Block
  • QA Functions Block Receive Functions   ▶
    • QA Functions Block
    • Convergence Function Block
  • DQDB Layer Functions to Support Isochronous Service
  • DQDB Node Functional Architecture Showing ICF Block   ▶
    • Block
    • Functions Block
    • PA Functions Block
    • Service
  • DQDB Node Functional Architecture Showing COCF Block   ▶
    • Block
    • COCF Block
    • Functions Block
    • Functional Data Path for the Common Functions Block
  • Fig   ▶
    • Common Functions Block
    • QA Functions Block
    • Common Functions Block
    • PA Functions Block
    • Default Slot Generator Function
    • Valid Bus Identification at Start-up
    • Default Slot Generator Function
    • Key to Functional Data Path Diagrams
  • Fig   ▶
    • Function
    • Bus A Function
    • Bus B Function
    • Head of Bus B Functions
    • Slot Format
  • Fig   ▶
    • Access Control Field
  • Fig   ▶
    • REQUEST Field
  • Fig   ▶
    • QA Segment Format
  • Fig   ▶
    • QA Segment Header Fields
  • Fig   ▶
    • PA Segment Format
  • Fig   ▶
    • PA Segment Header Fields
  • Fig   ▶
    • IMPDU Format
  • Fig   ▶
    • Common PDU Header Format
  • Fig   ▶
    • Address Field
  • Fig   ▶
    • Format
  • Fig   ▶
    • PVPL Field Format
  • Fig   ▶
    • QOS/CIB/HEL Field Format
  • Fig   ▶
    • Common PDU Trailer Format
  • Fig   ▶
    • Segmentation of an IMPDU into DMPDUs
  • Fig   ▶
    • DMPDU Format
  • Fig
  • DMPDU Header Format
  • DMPDU Trailer Format
  • (a) MAC Connectionless Service PDU Hierarchy   ▶
    • (b) MAC Connectionless Service PDU Hierarchy (continued;)
  • DQSM for Bus x at Priority Level I L
  • Instance of Reassembly State Machine (RSM)
  • Functional Diagram for HCS Decoder
  • HCS Decoder State Machine
  • DQDB Layer Management Interaction
  • DQDB Layer Management Information Octets
  • SNCF Subfield Formats
  • MPAF Subfield Formats   ▶
    • the Default Slot Generator Function
    • the Default Slot Generator Function
    • Diagram
  • (CC-2 Function)
  • (CC-1 Function)
  • MID Page Allocation Protocol Information Flow
  • Fig 10-11 Page Counter State Machine for Bus x (PCSM-x)
  • Fig 10-12 Get Page State Machine (GPSM)
  • Physical Layer Connection State Machine
  • The PLCP Frame Format
  • Path Overhead Identifier (POI) Octet
  • PLCP Path Status (Gl)
  • PLCP Framing State Machine Transition Diagram
  • Node Not Performing Head of Bus Functions
  • Slot Access Control Field Codings
  • Coding of ADDRESS-TYPE Subfield
  • Coding of the PI Field
  • Coding of QOS-DELAY
  • DMPDU Type
  • Access Control Field Conformance
  • Queued Arbitrated Segment Conformance
  • Pre-Arbitrated Segment Conformance
  • IMPDU Conformance
  • DMPDU Conformance
  • Table 10-1 BIF Codes
  • DSGS Codes
  • Table 10-3 HOBS Codes
  • ETSS Codes
  • PR Codes
  • PCM Codes
  • PCC Codes   ▶
    • Received at a Node Containing the Default Slot Generator
    • Received at a Node Not Containing the Default Slot Generator
    • Head of Bus Function Operations Table
    • Source Function Operations Table
  • Table 10-11 Configuration Control Type 2 Function Operations Table
  • Table 10-12 Configuration Control Type 1 Function Operations Table
  • Physical Layer Connection State Machine (PLCSM)
  • Abstract Encoding of LSS
  • Al and A2 Codes
  • Path Overhead Identifier (POI) Codes
  • LSS Codes
  • Table 12-4 Cycle/Stuff Counter Codes
  • Table 12-5 Link Status Signal Operations Table   ▶
    • Table
    • Requirements for Supporting Connection Setup
    • A1 Introduction
    • Call Establishment Model
    • Call Establishment Procedures
    • A4 Call Clearing Procedures
    • A5 References
    • Bus Selection for Connectionless Service
    • B1 Introduction
    • Bothways Transmission
    • Bus Selection Tables
    • Self-Learned Tables
    • B5 Table Maintenance by Aging Out
    • A Distributed Scheme for Table Maintenance
    • B7 References
    • Requirement for Equal Slot Rates on Both Buses
    • Relationship between DQSM and RQM
    • Common Functions Block Architecture
  • Rationale for the Subnetwork Timing Reference Selection Hierarchy   ▶
    • F1 Introduction
    • Rationale for the Hierarchy
    • Example Stable Subnetwork Configurations
    • Undergoing Configuration Changes
    • H1 Introduction
    • H2 Configuration Control Protocol Facilities
    • Rationale for the Head of Bus Arbitration Timer
    • H4 Example of Configuration Control Protocol
  • Functional Elements for Call Setup   ▶
    • Call
  • Layer Management Message Flows at the Originating Side
  • Layer Management Message Flows at the Terminating Side
  • Layer Management Message Flows at the Terminating Side
  • Open Dual Bus Topology
  • Looped Dual Bus Topology
  • Looped Topology Reconfigured into Open Topology   ▶
    • Local Request Queue
    • Slot Generator Function
    • Default Slot Generator Function
  • Key to Subnetwork Configuration Diagrams
  • Looped Configuration: External Timing at Node with SG-D   ▶
    • One Other Node
  • Looped Configuration: Local Timing at Node with SG-D   ▶
    • with SG-D
    • Externally Timed
    • Externally Timed
    • Externally Timed
    • Locally Timed
    • Locally Timed
    • Locally Timed
  • (and Upstream on Bus B) from Node with SG-D
  • (and Upstream on Bus A) from Node with SG-D   ▶
    • (Node with SG-D at Head of Bus A)
    • Head of Bus B)
    • Remote from Node with SG-D
    • Remote from Node with SG-D
  • Island Configuration: No External Timing
  • Island Configuration: External Timing in Middle of Bus
  • Island Configuration: External Timing at Head of Bus B
  • Island Configuration: External Timing at Head of Bus A
  • Looped Configuration of Four Nodes
  • Failed Link Between Nodes Q and S
  • Arbitration Completed
  • Reconfigured to Open Configuration

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