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IEEE Std International Standard ISO/IEC 10038 : 1993. ANSI/IEEE Std 802.1D, 1993 edition (This edition contains ANSI/IEEE Std 802.1D-1990, ANSI/IEEE 802.1i-1992 , and IEEE Std 802.5m-1993 ) -Description

Abstract: Abstract: An architecture for the interconnection of IEEE 802 Local Area Networks (LANs) below the level of the MAC Service,which is transparent to logical link control (LLC) and higher layer protocols, is defined. Transparent Bridging between Fibre Distributed Data Interface (FDDI) LANs and between FDDI LANs and IEEE 802 LANs is included. The operation and management of the connecting Bridges is specified. A Spanning Tree Algorithm and Protocol ensures a loop-free topology and provides redundancy. The Bridging method is not particular to any MAC Type; criteria for additional MAC-specific Bridging methods are defined. Source-Routing Transparent (SRT) Bridges are defined in an annex, and the -protocols for the operation of source routing in an SRT Bridge are specified.

Keywords: data processing, information interchange, local area networks, metropolitan area networks, fibre distributed data interface (FDDI), mode of data transmission , network interconnection , models, source routing, Source-Routing Transparent (SRT) Bridge

Content +

  • 1. Overview
    • 1.1 Scope.
  • References.
    • 1.3 Definition.
    • 1.4 Abbreviation.
    • 1.5 Conformance.
    • 1.6 Recommendations.
      • 1.6.1 Management.
    • 1.7 MAC-specific Bridging Methods.
  • 2. Support of the MAC Service
    • 2.1 Support of the MAC Service.
    • 2.2 Preservation of the MAC Service.
    • 2.3 Quality of Service Maintenance.
      • 2.3.1 Service Availability.
      • 2.3.2 Frame Loss.
      • 2.3.3 Frame Misordering.
      • 2.3.4 Frame Duplication.
      • 2.3.5 Transit Delay.
      • 2.3.6 Frame Lifetime.
      • 2.3.7 Undetected Frame Error Rate.
      • 2.3.8 Maximum Service Data Unit Size.
      • 2.3.9 Priority.
      • 2.3.10 Throughput.
    • 2.4 Internal Sublayer Service Provided within the MAC Bridge.
    • 2.5 Support of the Internal Sublayer Service by Specific MAC Procedures.
      • 2.5.1 Support by 8802-3 [5] (CSMA/CD).
      • 2.5.2 Support by 8802-4 [6] (Token-Passing Bus).
      • 2.5.3 Support by 8802-5 [7] (Token-Passing Ring).
      • 2.5.4 Support by Fibre Distributed Data Interface (FDDI).
  • 3. Principles of Operation
    • 3.1 Bridge Operation.
      • 3.1.1 Relay.
      • 3.1.2 Filtering Information.
      • 3.1.3 Bridge Management.
    • 3.2 Bridge Architecture.
    • 3.3 Model of Operation.
    • 3.4 Port State Information.
    • 3.5 Frame Reception.
    • 3.6 Frame Transmission.
    • 3.7 Frame Forwarding.
      • 3.7.1 Forwarding Conditions.
      • 3.7.2 LLC Duplicate Address Check.
      • 3.7.3 Queued Frames.
      • 3.7.4 Priority Mapping.
      • 3.7.5 FCS Recalculation.
      • 3.7.6 Model.
    • 3.8 The Learning Process.
    • 3.9 The Filtering Database.
      • 3.9.1 Static Entries.
      • 3.9.2 Dynamic Entries.
      • 3.9.3 Permanent Database.
      • 3.9.4 Model of Operation.
    • 3.10 Bridge Protocol Entity.
    • 3.11 Bridge Management.
    • 3.12 Addressing.
      • 3.12.1 End Stations.
      • 3.12.2 Bridge Ports.
      • 3.12.3 Bridge Protocol Entities.
      • 3.12.4 Bridge Management Entities.
      • 3.12.5 Unique Identification of a Bridge.
      • 3.12.6 Reserved Addresses.
  • 4. The Spanning Tree Algorithm and Protocol
    • 4.1 Requirements to be Met by the Algorithm.
    • 4.2 Requirements of the MAC Bridges.
    • 4.3 Overview
      • 4.3.1 The Active Topology and Its Computation.
      • 4.3.2 Propagating the Topology Information.
      • 4.3.3 Reconfiguration.
      • 4.3.4 Changing Port State.
      • 4.3.5 Notifying Topology Changes.
    • 4.4 Port States.
      • 4.4.1 Blocking.
      • 4.4.2 Listening.
      • 4.4.3 Learning.
      • 4.4.4 Forwarding.
      • 4.4.5 Disabled.
    • 4.5 Protocol Parameters and Timers.
      • 4.5.1 Configuration BPDU Parameters
      • 4.5.2 Topology Change Notification BPDU Parameters.
      • 4.5.3 Bridge Parameters
      • 4.5.4 Bridge Timers
      • 4.5.5 Port Parameters
      • 4.5.6 Port Timers
    • 4.6 Elements of Procedure
      • 4.6.1 Transmit Configuration BPDU
      • 4.6.2 Record Configuration Information
      • 4.6.3 Record Configuration Timeout Values
      • 4.6.4 Configuration BPDU Generation
      • 4.6.5 Reply to Configuration BPDU
      • 4.6.6 Transmit Topology Change Notification BPDU
      • 4.6.7 Configuration Update
      • 4.6.8 Root Selection
      • 4.6.9 Designated Port Selection
      • 4.6.10 Become Designated Port
      • 4.6.11 Port State Selection
      • 4.6.12 Make Forwarding
      • 4.6.13 Make Blocking
      • 4.6.14 Topology Change Detection
      • 4.6.15 Topology Change Acknowledged
      • 4.6.16 Acknowledge Topology Change
    • 4.7 Operation of the Protocol.
      • 4.7.1 Received Configuration BPDU
      • 4.7.2 Received Topology Change Notification BPDU.
      • 4.7.3 Hello Timer Expiry.
      • 4.7.4 Message Age Timer Expiry
      • 4.7.5 Forward Delay Timer Expiry
      • 4.7.6 Topology Change Notification Timer Expiry
      • 4.7.7 Topology Change Timer
      • 4.7.8 Hold Timer Expiry.
    • 4.8 Management of the Bridge Protocol Entity.
      • 4.8.1 Initialization
      • 4.8.2 Enable Port
      • 4.8.3 Disable Port
      • 4.8.4 Set Bridge Priority
      • 4.8.5 Set Port Priority
      • 4.8.6 Set Path Cost
    • 4.9 Procedural Model.
      • 4.9.1 Overview.
    • 4.10 Performance.
      • 4.10.1 Requirements.
      • 4.10.2 Parameter Values.
  • 5. Encoding of Bridge Protocol Data Units
    • 5.1 Structure
      • 5.1.1 Transmission and Representation of Octets.
      • 5.1.2 Components.
    • 5.2 Encoding of Parameter Types
      • 5.2.1 Encoding of Protocol Identifiers.
      • 5.2.2 Encoding of Protocol Version Identifiers.
      • 5.2.3 Encoding of BPDU Types.
      • 5.2.4 Encoding of Flags.
      • 5.2.5 Encoding of Bridge Identifiers.
      • 5.2.6 Encoding of Root Path Cost.
      • 5.2.7 Encoding of Port Identifiers.
      • 5.2.8 Encoding of Timer Values.
    • 5.3 BPDU Formats and Parameters
      • 5.3.1 Configuration BPDUs.
      • 5.3.2 Topology Change Notification BPDUs.
      • 5.3.3 Validation of Received BPDUs.
  • 6. Bridge Management
    • 6.1 Management Functions.
      • 6.1.1 Configuration Management.
      • 6.1.2 Fault Management.
      • 6.1.3 Performance Management.
      • 6.1.4 Security Management.
      • 6.1.5 Accounting Management.
    • 6.2 Managed Objects.
    • 6.3 Data Types.
    • 6.4 Bridge Management Entity.
      • 6.4.1 Bridge Configuration.
      • 6.4.2 Port Configuration.
    • 6.5 Media Access Control Entities.
    • 6.6 Forwarding Process.
      • 6.6.1 The Port Counters.
      • 6.6.2 Transmission Priority.
    • 6.7 Filtering Database.
      • 6.7.1 The Filtering Database.
      • 6.7.2 A Static Entry.
      • 6.7.3 A Dynamic Entry.
      • 6.7.4 Permanent Database.
      • 6.7.5 General Filtering Database Operations
    • 6.8 Bridge Protocol Entity.
      • 6.8.1 The Protocol Entity.
      • 6.8.2 Bridge Port.
  • 7. Management Protocol
    • 7.1 Specification of Operations.
      • 7.1.1 Specification of a Get Operation.
      • 7.1.2 Specification of a Set Operation.
      • 7.1.3 Specification of an Action Operation.
    • 7.2 Operations.
    • 7.3 Encoding.
  • 8. Bridge Performance
    • 8.1 Guaranteed Port Filtering Rate.
    • 8.2 Guaranteed Bridge Relaying Rate.
  • A1 Introduction.
  • A2 Abbreviations and Special Symbols: Option-status Symbols
    • A3. Instructions for Completing the PICS Proforma.
  • A4 Identification of Requirements.
    • B1. Overview.
    • B2. Abbreviations and Special Symbols
    • B3. Calculation
    • B3.1 Lifetime, Diameter, and Transit Delay
      • B3.1.1 Step.
      • B3.1.2 Basis of Choice.
      • B3.1.3 Recommended Values for IEEE 802 Bridged Local Area Networks
    • B3.2 Transmission of BPDUs
      • B3.2.1 Step.
      • B3.2.2 Basis of Choice.
      • B3.2.3 Recommended Values for IEEE 802 Bridged Local Area Networks.
    • B3.3 Accuracy of Message Age
      • B3.3.1 Step.
      • B3.3.2 Basis of Choice.
      • B3.3.3 Recommended Values for IEEE 802 Bridged Local Area Networks
    • B3.4 Hello Time
      • B3.4.1 Step.
      • B3.4.2 Basis of Choice.
      • B3.4.3 Recommended Values for IEEE 802 Bridged Local Area Networks
    • B3.5 Bridge Protocol Message Propagation
      • B3.5.1 Step.
      • B3.5.2 Basis of Choice.
      • B3.5.3 Recommended Values for IEEE 802 Bridged Local Area Networks.
    • B3.6 Hold Time
      • B3.6.1 Step.
      • B3.6.2 Basis of Choice.
      • B3.6.3 Recommended Values for IEEE 802 Bridged Local Area Networks
    • B3.7 Max Age
      • B3.7.1 Step.
      • B3.7.2 Basis of Choice.
      • B3.7.3 Recommended Values for IEEE 802 Bridged Local Area Networks
    • B3.8 Forward Delay
      • B3.8.1 Step.
      • B3.8.2 Basis of Choice.
      • B3.8.3 Recommended Values for IEEE 802 Bridged Local Area Networks
    • B4. Selection of Parameter Ranges
    • B4.1 Absolute Maximum Values.
    • B4.2 Hold Time.
    • B4.3 Range of Hello Time.
    • B4.4 Maximum Required Values of Max Age and Forward Delay.
    • B4.5 Minimum Values for Max Age and Forward Delay.
    • B4.6 Relationship Between Max Age and Forward Delay.
    • C1. Overview.
    • C1.1 Scope.
    • C1.2 Definitions
      • C1.2.1 Abbreviations.
  • References.
    • C1.4 Conformance.
      • C1.4.1 Static Conformance Requirements.
      • C1.4.2 Dynamic Conformance Requirements.
    • C2. Support of the MAC Service
    • C2.1 Support of the MAC Service.
    • C2.2 Preservation of the MAC Service.
    • C2.3 Quality of Service Maintenance.
      • C2.3.1 Frame Misordering.
      • C2.3.2 Frame Duplication
      • C2.3.3 Undetected Frame Error Rate.
      • C2.3.4 Maximum Service Data Unit Size Supported.
    • C2.4 Internal Sublayer Service.
      • C2.4.1 Interactions.
      • C2.4.2 Detailed Service Specification.
    • C2.5 Support of the Internal Sublayer Service.
      • C2.5.1 Support of Token Ring.
      • C2.5.2 Support of FDDI.
    • C3. Principles of Operation.
    • C3.1 Source-Routing Bridge Operation.
      • C3.1.1 Relay of Data Frames.
      • C3.1.2 Dissemination of Routing Information.
      • C3.1.3 Bridge Management.
    • C3.2 Bridge Architecture.
    • C3.3 Bridge Operation.
      • C3.3.1 Source-Routing Function Overview.
      • C3.3.2 Source-Routing Information Field.
      • C3.3.3 Source-Routing Frame Types.
      • C3.3.4 Bridge Processing of Source Routed Frames.
    • C3.4 Port State Information.
    • C3.5 Frame Reception.
    • C3.6 Frame Transmission.
    • C3.7 Frame Forwarding.
      • C3.7.1 Specifically Routed Data Frames (RT=0XX).
      • C3.7.2 All Routes Explorer Frames (RT=10X).
      • C3.7.3 Spanning Tree Explorer Frames (STE).
      • C3.7.4 Duplicate Bridge Number Test.
      • C3.7.5 Queued Frames.
      • C3.7.6 Priority Mapping.
    • C3.8 Addressing.
      • C3.8.1 LAN ID.
      • C3.8.2 Bridge Number.
      • C3.8.3 Route Descriptor.
    • C4. Bridge Management.
    • C4.1 Bridge Management Entity.
      • C4.1.1 Bridge Configuration
    • C4.2 Forwarding Process.
      • C4.2.1 The Port Counters.
    • C4.3 SRT Bridge Management Entity
      • C4.3.1 SRT Bridge Configuration.
      • C4.3.2 SRT Port Configuration.
    • C4.4 SRT Bridge Port Pair Database.
      • C4.4.1 SRT Bridge Port Pair Configuration
    • C5. Management Protocol.
    • C5.1 Operations.
    • C5.2 Encoding.
    • D1. Introduction.
    • D2. Abbreviations and Special Symbols: Option-Status Symbols
    • D3. Instructions for Completing the PICS Proforma.
    • D4. Identification of Requirements.
    • D.5 Conformance to IEEE 802 MAC and LLC Standards
    • D6. Relay and Filtering of Frames
    • D7. Bridge Numbers and LAN IDs
    • D8. Bridge Management

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