Chapter 1 Ipv6 Configuration; Ipv6 Overview; Ipv6 Features - H3C S3100-52P Operation Manual

Operation Manual – IPv6 Management
H3C S3100-52P Ethernet Switch

Chapter 1 IPv6 Configuration

When configuring IPv6, go to these sections for information you are interested in:

IPv6 Overview

IPv6 Configuration Task List
IPv6 Configuration Example
Note:
The term "router" in this document refers to a router in a generic sense or an
Ethernet switch running a routing protocol.
H3C S3100-52P Ethernet Switch supports IPv6 management features, but do not
support IPv6 forwarding and related features.
1.1 IPv6 Overview
Internet Protocol Version 6 (IPv6), also called IP next generation (IPng), was designed
by the Internet Engineering Task Force (IETF) as the successor to Internet Protocol
Version 4 (IPv4). The significant difference between IPv6 and IPv4 is that IPv6
increases the IP address size from 32 bits to 128 bits.

1.1.1 IPv6 Features

I. Header format simplification
IPv6 cuts down some IPv4 header fields or moves them to extension headers to reduce
the overhead of the basic IPv6 header. IPv6 uses a fixed-length header, thus making
IPv6 packet handling simple and improving the forwarding efficiency. Although the IPv6
address size is four times that of IPv4 addresses, the size of the IPv6 header is only
twice that of the IPv4 header (excluding the Options field). For the specific IPv6 header
format, see Figure 1-1.
1-1
Chapter 1 IPv6 Configuration