Ip V 6 Basics; Ipv6 Overview - 3Com Switch 4800G 24-Port Configuration Manual

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IPv6 Overview

IPv6 Features
IP 6 B
V
When configuring IPv6 basics, go to these sections for information you are
interested in:
"IPv6 Overview" on page 499
■
"IPv6 Basics Configuration Task List" on page 508
■
"Configuring Basic IPv6 Functions" on page 508
■
"Configuring IPv6 NDP" on page 510
■
"Configuring PMTU Discovery" on page 513
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"Configuring IPv6 TCP Properties" on page 514
■
"Configuring ICMPv6 Packet Sending" on page 514
■
"Configuring IPv6 DNS" on page 515
■
"Displaying and Maintaining IPv6 Basics Configuration" on page 516
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"IPv6 Configuration Example" on page 517
■
"Troubleshooting IPv6 Basics Configuration" on page 520
■
n
The term "router" or the router icon in this document refers to a router in a
generic sense or a Layer 3 Ethernet switch running a routing protocol.
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.This section covers the
following:
"IPv6 Features" on page 499
■
"Introduction to IPv6 Address" on page 501
■
"Introduction to IPv6 Neighbor Discovery Protocol" on page 504
■
"IPv6 PMTU Discovery" on page 507
■
"Introduction to IPv6 DNS" on page 507
■
"Protocols and Standards" on page 508
■
Header format simplification
IPv6 cuts down some IPv4 header fields or move them to the IPv6 extension
headers to reduce the length of the basic IPv6 header. IPv6 uses the basic header
with a fixed length, thus making IPv6 packet handling simple and improving the
forwarding efficiency. Although the IPv6 address size is four times that of IPv4
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ASICS ONFIGURATION