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Transmission of IPv6 Packets over Ethernet Networks (RFC2464)

IP.com Disclosure Number: IPCOM000003043D
Original Publication Date: 1998-Dec-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 5 page(s) / 12K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Crawford: AUTHOR

Abstract

This document specifies the frame format for transmission of IPv6 packets and the method of forming IPv6 link-local addresses and statelessly autoconfigured addresses on Ethernet networks. It also specifies the content of the Source/Target Link-layer Address option used in Router Solicitation, Router Advertisement, Neighbor Solicitation, Neighbor Advertisement and Redirect messages when those messages are transmitted on an Ethernet.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 25% of the total text.

Network Working Group M. Crawford

Request for Comments: 2464 Fermilab

Obsoletes: 1972 December 1998

Category: Standards Track

Transmission of IPv6 Packets over Ethernet Networks

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.

1. Introduction

This document specifies the frame format for transmission of IPv6

packets and the method of forming IPv6 link-local addresses and

statelessly autoconfigured addresses on Ethernet networks. It also

specifies the content of the Source/Target Link-layer Address option

used in Router Solicitation, Router Advertisement, Neighbor

Solicitation, Neighbor Advertisement and Redirect messages when those

messages are transmitted on an Ethernet.

This document replaces RFC 1972, "A Method for the Transmission of

IPv6 Packets over Ethernet Networks", which will become historic.

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. Maximum Transmission Unit

The default MTU size for IPv6 [IPV6] packets on an Ethernet is 1500

octets. This size may be reduced by a Router Advertisement [DISC]

containing an MTU option which specifies a smaller MTU, or by manual

configuration of each node. If a Router Advertisement received on an

Ethernet interface has an MTU option specifying an MTU larger than

1500, or larger than a manually configured value, that MTU option may

be logged to system management but must be otherwise ignored.

For purposes of this document, information received from DHCP is

considered "manually configured" and the term Ethernet includes

CSMA/CD and full-duplex subnetworks based on ISO/IEC 8802-3, with

various data rates.

3. Frame Format

IPv6 packets are transmitted in standard Ethernet frames. The

Ethernet header contains the Destination and Source Ethernet

addresses and the Ethernet type code, which must contain the value

86DD hexadecimal. The data field contains the IPv6 header followed

immediately by the payload, and possibly padding octets to meet the

minimum frame size for the Ethernet link.

0 1

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

| Destination |

+- -+

| Ethernet ...