IEEE 802.1s-2002

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IEEE Standards for Local and Metropolitan Area Networks – Amendment to 802.1Q Virtual Bridged Local Area Networks: Multiple Spanning Trees

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IEEE	2002

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Description

Amendment Standard – Superseded. This standard extends the architecture, protocols, and algorithms specified in IEEE Std 802.1Q, 1998 Edition, to allow data traffic belonging to different VLANs to be allocated to different spanning trees, while retaining interoperability with bridges conformant to that prior specification.

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PDF Pages	PDF Title
1	Cover Page
2	Title Page
4	Introduction
6	Participants
8	CONTENTS
12	1. Overview 1.1 Scope
13	1.3 Relationship with ISO/IEC 15802-3IEEE Std 802.1D
14	2. References 3. Definitions
15	4. Abbreviations
16	5. Conformance 5.1 Static conformance requirements
17	5.2 Options 6. Support of the MAC Service in VLANs 6.1 Support of the MAC service 6.2 Preservation of the MAC service
18	6.3 Quality of service maintenance
22	6.4 Enhanced Internal Sublayer Service provided within VLAN Bridges
26	6.5 Support of the Internal Sublayer Service by IEEE Std 802.3 (CSMA/CD)
27	7. Principles of network operation 7.1 Network Overview
28	7.2 Use of VLANs
29	7.3 VLAN Topology 7.4 Locating end stations
31	7.5 Ingress, Forwarding, and Egress Rules
32	8. Principles of bridge operation 8.1 Bridge operation
35	8.2 Bridge architecture
37	8.3 Model of operation
42	8.4 Port states and parameters
44	8.5 Frame reception
45	8.6 The Forwarding Process
51	8.7 Frame transmission
52	8.8 The Learning Process 8.9 VLAN classification
56	8.10 The Filtering Database
69	8.11 MST configuration information
70	8.12 Spanning Tree Protocol Entity and GARP Protocol Entities
71	8.13 Bridge Management 8.14 Addressing
80	10. Use of GMRP in VLANs 10.1 Definition of a VLAN context 11. VLAN topology management 11.2 GARP VLAN Registration Protocol (GVRP)
81	11.3 Conformance to GVRP 12. VLAN bridge management 12.1 Management functions
82	12.2 Managed objects
83	12.3 Data types 12.4 Bridge Management Entity
87	12.5 MAC entities 12.6 Forwarding process
91	12.7 Filtering Database
95	12.8 Bridge Protocol Entity
103	12.9 GARP Entities
106	12.10 Bridge VLAN managed objects
116	12.11 GMRP entities
118	12.12 MST configuration entities
122	13. The Multiple Spanning Tree Protocol (MSTP)
123	13.1 Protocol Design Requirements 13.2 Protocol Support Requirements
124	13.3 MSTP Overview
130	13.4 Relationship of MSTP to RSTP 13.5 Modelling an MST Region as a single RSTP Bridge
131	13.6 STP and RSTP compatibility
132	13.7 MST Configuration Identification
134	13.8 MST Regions 13.9 Spanning Tree Priority Vectors
135	13.10 CIST Priority Vector Calculations
137	13.11 MST Priority Vector Calculations
139	13.12 Port Role Assignments 13.13 Stable Connectivity
141	13.14 Communicating Spanning Tree Information
142	13.15 Changing Spanning Tree Information
143	13.16 Changing Port States
148	13.17 Updating Learned Station Location Information
149	13.18 MSTP and point-to-point links 13.19 Multiple Spanning Tree State Machines
151	13.20 Notational Conventions used in State Diagrams 13.21 State Machine Timers
152	13.22 State Machine Performance Parameters
153	13.23 Per-Bridge Variables
155	13.24 Per-Port Variables
160	13.25 State Machine Conditions
161	13.26 State Machine Procedures
169	13.27 The Port Timers state machine
170	13.28 Port Receive state machine 13.29 Port Protocol Migration state machine
171	13.30 Port Transmit state machine
172	13.31 Port Information state machine 13.32 Port Role Selection state machine
173	13.33 Port Role Transitions state machine
176	13.34 Port State Transition state machine 13.35 Topology Change state machine
177	13.36 Performance
179	14. Use of BPDUs by MSTP 14.1 BPDU Structure 14.2 Encoding of parameter types
181	14.3 BPDU formats and parameters 14.4 Validation of received BPDUs
182	14.5 Transmission of BPDUs 14.6 Encoding and decoding of STP Configuration, RST, and MST BPDUs
186	Annex A (normative) PICS proforma
213	Annex E (informative) Interoperability considerations
214	Annex G (informative) Differences between 802.1s and 802.1w state machines

Additional information

Standard Title	IEEE Standards for Local and Metropolitan Area Networks – Amendment to 802.1Q Virtual Bridged Local Area Networks: Multiple Spanning Trees
Published Code	IEEE
Publication Date	2002

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IEEE 802.1s-2002

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