Internet Engineering Task Force (IETF) S. Gundavelli
Request for Comments: 6085 M. Townsley
Updates: 2464 O. Troan
Category: Standards Track W. Dec
ISSN: 2070-1721 Cisco
January 2011
Internet Engineering Task Force (IETF) S. Gundavelli
Request for Comments: 6085 M. Townsley
Updates: 2464 O. Troan
Category: Standards Track W. Dec
ISSN: 2070-1721 Cisco
January 2011
Address Mapping of IPv6 Multicast Packets on Ethernet
以太网上IPv6多播数据包的地址映射
Abstract
摘要
When transmitting an IPv6 packet with a multicast destination address, the IPv6 destination address is mapped to an Ethernet link-layer multicast address. This document clarifies that a mapping of an IPv6 packet with a multicast destination address may in some circumstances map to an Ethernet link-layer unicast address.
传输具有多播目标地址的IPv6数据包时，IPv6目标地址映射到以太网链路层多播地址。本文档澄清了IPv6数据包与多播目的地地址的映射在某些情况下可能映射到以太网链路层单播地址。
Status of This Memo
关于下段备忘
This is an Internet Standards Track document.
这是一份互联网标准跟踪文件。
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
本文件是互联网工程任务组（IETF）的产品。它代表了IETF社区的共识。它已经接受了公众审查，并已被互联网工程指导小组（IESG）批准出版。有关互联网标准的更多信息，请参见RFC 5741第2节。
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6085.
有关本文件当前状态、任何勘误表以及如何提供反馈的信息，请访问http://www.rfc-editor.org/info/rfc6085.
Copyright Notice
版权公告
Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved.
版权所有（c）2011 IETF信托基金和确定为文件作者的人员。版权所有。
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
本文件受BCP 78和IETF信托有关IETF文件的法律规定的约束(http://trustee.ietf.org/license-info)自本文件出版之日起生效。请仔细阅读这些文件，因为它们描述了您对本文件的权利和限制。从本文件中提取的代码组件必须包括信托法律条款第4.e节中所述的简化BSD许可证文本，并提供简化BSD许可证中所述的无担保。
"Transmission of IPv6 Packets over Ethernet Networks" ([RFC2464], Section 7) specifies how an IPv6 packet with a multicast destination address is mapped into an Ethernet link-layer address. This document extends this mapping to explicitly allow for a mapping of an IPv6 packet with a multicast destination address into an Ethernet link-layer unicast address, when it is clear that only one address is relevant.
“通过以太网传输IPv6数据包”（[RFC2464]，第7节）规定了具有多播目标地址的IPv6数据包如何映射到以太网链路层地址。本文档扩展了此映射，以明确允许将具有多播目标地址的IPv6数据包映射到以太网链路层单播地址，前提是只有一个地址是相关的。
This mapping does not replace the mapping described in [RFC2464], Section 7. The determination of the unicast Ethernet link-layer address and the construction of the outgoing IPv6 packet are out of scope for this document.
此映射不替换[RFC2464]第7节中描述的映射。单播以太网链路层地址的确定和传出IPv6数据包的构造超出了本文档的范围。
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 [RFC2119].
本文件中的关键词“必须”、“不得”、“要求”、“应”、“不应”、“应”、“不应”、“建议”、“可”和“可选”应按照RFC 2119[RFC2119]中所述进行解释。
An IPv6 node receiving an IPv6 packet with a multicast destination address and an Ethernet link-layer unicast address MUST NOT drop the packet as a result of the use of this form of address mapping.
接收具有多播目标地址和以太网链路层单播地址的IPv6数据包的IPv6节点不得由于使用这种形式的地址映射而丢弃该数据包。
This document does not introduce any new security vulnerabilities.
本文档未引入任何新的安全漏洞。
The authors would like to acknowledge Bernard Aboba, Fred Baker, Wes Beebee, Ron Bonica, Olaf Bonness, Jean-Michel Combes, Ralph Droms, Alain Durand, Suresh Krishnan, Eric Levy-Abegnoli, Phil Roberts, Behcet Sarikaya, Hemant Singh, Mark Smith, Dave Thaler, Pascal Thubert, Stig Venaas, and Eric Voit for their contributions and discussions on this topic.
作者要感谢伯纳德·阿博巴、弗雷德·贝克、韦斯·比比、罗恩·博尼卡、奥拉夫·邦尼斯、让·米歇尔·库姆斯、拉尔夫·德罗姆斯、阿兰·杜兰德、苏莱什·克里希南、埃里克·利维·阿贝格诺利、菲尔·罗伯茨、贝塞特·萨里卡亚、赫曼特·辛格、马克·史密斯、戴夫·泰勒、帕斯卡尔·苏伯特、斯蒂格·维纳斯、，以及Eric Voit，感谢他们在这个话题上的贡献和讨论。
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC2119]Bradner，S.，“RFC中用于表示需求水平的关键词”，BCP 14，RFC 2119，1997年3月。
[RFC2464] Crawford, M., "Transmission of IPv6 Packets over Ethernet Networks", RFC 2464, December 1998.
[RFC2464]克劳福德，M.，“通过以太网传输IPv6数据包”，RFC2464，1998年12月。
Authors' Addresses
作者地址
Sri Gundavelli Cisco 170 West Tasman Drive San Jose, CA 95134 USA
美国加利福尼亚州圣何塞市西塔斯曼大道170号，邮编95134
EMail: sgundave@cisco.com
EMail: sgundave@cisco.com
Mark Townsley Cisco L'Atlantis, 11, Rue Camille Desmoulins ISSY LES MOULINEAUX, ILE DE FRANCE 92782 France
马克·汤斯利·思科亚特兰蒂斯，法兰西岛卡米尔·德斯莫林街11号伊西·莱斯莫莱诺，邮编92782
EMail: townsley@cisco.com
EMail: townsley@cisco.com
Ole Troan Cisco Oslo, Norway
奥斯陆，挪威
EMail: ot@cisco.com
EMail: ot@cisco.com
Wojciech Dec Cisco Haarlerbergweg 13-19 Amsterdam, Noord-Holland 1101 CH Netherlands
Wojciech Dec Cisco Haarlerbergweg 13-19阿姆斯特丹，荷兰诺德1101 CH
EMail: wdec@cisco.com
EMail: wdec@cisco.com