RFC 2460 IPv 6 w 1035501 w 1035504

RFC 2460 ——IPv 6协议 黄双 w 1035501 王为娟 w 1035504 1

Outline 1 Introduction 2 Terminology 3 IPv 6 Header Format 4 IPv 6 Extension Headers 5 Packet Size Issues 6 Flow Labels 7 Traffic Classes 8 Upper-Layer Protocol Issues 2

Introduction IP 第 6 版 (IPv 6) 是继 IP 第 4 版 (IPv 4) [RFC-791] 以后， Internet 协议一个新版本。 由 IPv 4 到 IPv 6 的改变主要集中在以下几个方面: *Expanded Addressing Capabilities *Header Format Simplification *Improved Support for Extensions and Options *Flow Labeling Capability *Authentication and Privacy Capabilities 3

IPv 6 Header Format 5

IPv 6 Extension Headers 8

IPv 6 Extension Headers 一个完整的 IPv 6 实现应包含以下扩展首部的处理程序: >Hop-by-Hop Options >Routing (Type 0) >Fragment >Destination Options >Authentication >Encapsulating Security Payload 9

IPv 6 Extension Headers The Type 0 Routing header has the following format: 12

IPv 6 Extension Headers 源节点 S 给目的节点 D 发送一个包， 用路由首部来使这个包经过中间节点 I 1， I 2 和 I 3。 S -->I 1 Source Address=S Destination Address = I 1 -->I 2 Source Address = S Destination Address = I 2 Hdr Ext Len = 6 Segments Left = 3 Address[1] = I 2 Address[2] = I 3 Address[3] = D Hdr Ext Len = 6 Segments Left = 2 Address[1] = I 1 Address[2] = I 3 Address[3] = D I 2 -->I 3 Source Address = S Hdr Ext Len = 6 Destination Address = I 3 Segments Left = 1 Address[1] = I 1 Address[2] = I 2 Address[3] = D I 3 -->D Source Address = S Destination Address = D Hdr Ext Len = 6 Segments Left = 0 Address[1] = I 1 Address[2] = I 2 Address[3] = I 3 13

The end! 22