3Com 4210G Series, Руководство по настройке, Страница: 290 / 1133

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IPv6 Basics Configuration
When configuring IPv6 basics, go to these sections for information you are interested in:
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IPv6 Overview
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IPv6 Basics Configuration Task List
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Configuring Basic IPv6 Functions
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Configuring IPv6 NDP
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Configuring PMTU Discovery
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Configuring IPv6 TCP Properties
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Configuring ICMPv6 Packet Sending
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Configuring IPv6 DNS Client
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Displaying and Maintaining IPv6 Basics Configuration
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IPv6 Configuration Example
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Troubleshooting IPv6 Basics Configuration
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.
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.
This section covers the following:
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IPv6 Features
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Introduction to IPv6 Address
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Introduction to IPv6 Neighbor Discovery Protocol
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IPv6 PMTU Discovery
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Introduction to IPv6 DNS
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Protocols and Standards
IPv6 Features
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