Ipv6 Configuration; Ipv6 Overview; Ipv6 Features - 3Com E4500-24 Cli Configuration Manual

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IPv6 Configuration

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

IPv6 Overview

IPv6 Configuration Task List
IPv6 Configuration Example
The term "router" in this document refers to a router in a generic sense or an Ethernet switch
running a routing protocol.
The 3com switch 4500 supports IPv6 management features, but does not support IPv6 forwarding
and related features.
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.

IPv6 Features

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.
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