RFC 1112

Network Working Group
Request for Comments: 1112
Obsoletes: RFCs 988, 1054

S. Deering
Stanford University
August 1989

1. STATUS OF THIS MEMO

This memo specifies the extensions required of a host implementation of the Internet Protocol (IP) to support multicasting. It is the recommended standard for IP multicasting in the Internet. Distribution of this memo is unlimited.

Table of Contents

• 2. INTRODUCTION
• 3. LEVELS OF CONFORMANCE
• 4. HOST GROUP ADDRESSES
• 5. MODEL OF A HOST IP IMPLEMENTATION
• 6. SENDING MULTICAST IP DATAGRAMS
  • 6.1. Extensions to the IP Service Interface
  • 6.2. Extensions to the IP Module
  • 6.3. Extensions to the Local Network Service Interface
  • 6.4. Extensions to an Ethernet Local Network Module
  • 6.5. Extensions to Local Network Modules other than Ethernet
• 7. RECEIVING MULTICAST IP DATAGRAMS
  • 7.1. Extensions to the IP Service Interface
  • 7.2. Extensions to the IP Module
  • 7.3. Extensions to the Local Network Service Interface
  • 7.4. Extensions to an Ethernet Local Network Module
  • 7.5. Extensions to Local Network Modules other than Ethernet
• APPENDIX I. INTERNET GROUP MANAGEMENT PROTOCOL (IGMP)
• APPENDIX II. HOST GROUP ADDRESS ISSUES
• Author's Address

• Original text document
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