RFC 995:End System to Intermediate System Routing ...
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End System to Intermediate System Routing Exchange Protocol for use in conjunction with ISO 8473


1. Introduction
2. Scope and Field of Application
3. References
4. Definitions
4.1. Reference Model Definitions
4.2. Network Layer Architecture Definitions
4.3. Network Layer Addressing Definitions
4.4. Local Area Network Definitions
4.5. Additional Definitions
5. Symbols and Abbreviations
5.1. Data Units
5.2. Protocol Data Units
5.3. Protocol Data Unit Fields
5.4. Parameters
5.5. Miscellaneous
6. Overview of the Protocol
6.1. Information Provided by the Protocol
6.2. Subsets of the Protocol
6.3. Addressing
6.4. Underlying Service Assumed by the Protocol
6.4.1. Subnetwork Addresses
6.4.2. Subnetwork User Data
6.5. Service Assumed from Local Environment
6.6. Subnetwork Types
6.6.1. Point-to-Point Subnetworks
6.6.2. Broadcast Subnetworks
6.6.3. General Topology Subnetworks
7. Protocol Functions
7.1. Protocol Timers
7.1.1. Configuration Timer
7.1.2. Holding Timer
7.2. Report Configuration Function
7.2.1. Report Configuration by End Systems
7.2.2. Report Configuration by Intermediate Systems
7.3. Record Configuration Function
7.4. Flush Old Configuration Function
7.5. Query Configuration Function
7.6. Configuration Response Function
7.7. Request Redirect Function
7.8. Record Redirect Function
7.9. Refresh Redirect Function
7.10. Flush Old Redirect Function
7.11. PDU Header Error Detection
7.12. Classification of Functions
8. Structure and Encoding of PDUs
8.1. Structure
8.2. Fixed Part
8.2.1. General
8.2.2. Network Layer Protocol Identifier
8.2.3. Length Indicator
8.2.4. Version/Protocol Identifier Extension
8.2.5. Type Code
8.2.6. Holding Time
8.2.7. PDU Checksum
8.3. Network Address Part
8.3.1. General
8.3.2. NPAI (Network Protocol Address Information) Encoding
8.3.3. Source Address Parameter for ESH PDU
8.3.4. Network Entity Title Parameter for ISH PDU
8.3.5. Destination Address Parameter for RD PDU
8.4. Subnetwork Address Part
8.4.1. Subnetwork Address Parameter for RD PDU
8.5. Options Part
8.5.1. General
8.5.2. Security
8.5.3. Quality of Service Maintenance
8.5.4. Priority
8.6. End System Hello (ESH) PDU
8.6.1. Structure
8.7. Intermediate System Hello (ISH) PDU
8.7.1. Structure
8.8. Redirect (RD) PDU
8.8.1. Structure
9. Formal Description
10. Conformance
11. ANNEX A. SUPPORTING TECHNICAL MATERIAL
11.1. A.1 Use of Timers
11.1.1. A.1.1 Example of Holding Time for Route Redirection
11.1.2. A.1.2 Example of Holding Timer for Configuration Information
11.2. A.2 Refresh and timeout of Redirection information
11.3. A.3 System Initialization Considerations
11.4. A.4 Optimizations for Flushing Redirects

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