Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification
RFC 2463
Document | Type |
RFC - Draft Standard
(December 1998; No errata)
Obsoleted by RFC 4443
Obsoletes RFC 1885
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Authors | Steve Deering , Alex Conta | ||
Last updated | 2013-03-02 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 2463 (Draft Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | (None) | ||
Send notices to | (None) |
Network Working Group A. Conta Request for Comments: 2463 Lucent Obsoletes: 1885 S. Deering Category: Standards Track Cisco Systems December 1998 Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification Status of this Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The Internet Society (1998). All Rights Reserved. Abstract This document specifies a set of Internet Control Message Protocol (ICMP) messages for use with version 6 of the Internet Protocol (IPv6). Table of Contents 1. Introduction........................................2 2. ICMPv6 (ICMP for IPv6)..............................2 2.1 Message General Format.......................2 2.2 Message Source Address Determination.........3 2.3 Message Checksum Calculation.................4 2.4 Message Processing Rules.....................4 3. ICMPv6 Error Messages...............................6 3.1 Destination Unreachable Message..............6 3.2 Packet Too Big Message...................... 8 3.3 Time Exceeded Message....................... 9 3.4 Parameter Problem Message...................10 4. ICMPv6 Informational Messages......................11 4.1 Echo Request Message........................11 4.2 Echo Reply Message..........................12 5. Security Considerations............................13 6. References.........................................14 7. Acknowledgments....................................15 Conta & Deering Standards Track [Page 1] RFC 2463 ICMPv6 (ICMP for IPv6) December 1998 8. Authors' Addresses.................................16 Appendix A - Changes since RFC 1885...................17 Full Copyright Statement..............................18 1. Introduction The Internet Protocol, version 6 (IPv6) is a new version of IP. IPv6 uses the Internet Control Message Protocol (ICMP) as defined for IPv4 [RFC-792], with a number of changes. The resulting protocol is called ICMPv6, and has an IPv6 Next Header value of 58. This document describes the format of a set of control messages used in ICMPv6. It does not describe the procedures for using these messages to achieve functions like Path MTU discovery; such procedures are described in other documents (e.g., [PMTU]). Other documents may also introduce additional ICMPv6 message types, such as Neighbor Discovery messages [IPv6-DISC], subject to the general rules for ICMPv6 messages given in section 2 of this document. Terminology defined in the IPv6 specification [IPv6] and the IPv6 Routing and Addressing specification [IPv6-ADDR] applies to this document as well. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [RFC-2119]. 2. ICMPv6 (ICMP for IPv6) ICMPv6 is used by IPv6 nodes to report errors encountered in processing packets, and to perform other internet-layer functions, such as diagnostics (ICMPv6 "ping"). ICMPv6 is an integral part of IPv6 and MUST be fully implemented by every IPv6 node. 2.1 Message General Format ICMPv6 messages are grouped into two classes: error messages and informational messages. Error messages are identified as such by having a zero in the high-order bit of their message Type field values. Thus, error messages have message Types from 0 to 127; informational messages have message Types from 128 to 255. This document defines the message formats for the following ICMPv6 messages: Conta & Deering Standards Track [Page 2] RFC 2463 ICMPv6 (ICMP for IPv6) December 1998 ICMPv6 error messages: 1 Destination Unreachable (see section 3.1) 2 Packet Too Big (see section 3.2) 3 Time Exceeded (see section 3.3) 4 Parameter Problem (see section 3.4) ICMPv6 informational messages: 128 Echo Request (see section 4.1)Show full document text