HP-UX IPv6 Porting Guide (September 2004)
Table Of Contents
- About This Document
- 1 Introduction
- 2 IPv6 Addressing
- 3 Data Structure Changes
- 4 Migrating Applications from IPv4 to IPv6
- 5 Overview of IPv4 and IPv6 Call Set-up
- 6 Function Calls Converting Names to Addresses
- 7 Function Calls Converting IP addresses to Names
- 8 Reading Error Messages
- 9 Freeing Memory
- 10 Converting Binary and Text Addresses
- 11 Testing for Scope and Type of IPv6 addresses using Macros
- 12 Identifying Local Interface Names and Indexes
- 13 Configuring or Querying an Interface using IPv6 ioctl() Function Calls
- 14 Verifying IPv6 Installation
- 15 Sample Client/Server Programs
- A IPv4 to IPv6 Quick Reference Guide
Introduction
Terminology
Chapter 14
Terminology
This section provides brief definitions of some common general IP and IPv6 terms.
General IP Terminology
Node: A device that implements IP (either IPv4 or IPv6 or both).
Router: A node that forwards IP packets not explicitly addressed to itself.
Host: Any node that is not a router.
Link: A logical connection between two nodes. Here, a link is the layer below IP such as
Ethernet, PPP, or ATM networks. A link also includes IPv6 traffic encapsulated within IPv4
packets, also known as tunneling.
Name Service: A database that maps host names to IP addresses. Common Name Services are
Domain Name System (DNS) or the /etc/hosts file.
Site: An organization’s Intranet, perhaps geographically disbursed.
IPv6 Terminology
IPv4 Address: A 32-bit IPv4 address
IPv6 Address: An 128-bit IPv6 address
IPv4-only node: A node that implements only IPv4. An IPv4-only node does not understand
IPv6.
IPv6-only node: A node configured for IPv6 only. An IPv6-only node does not understand IPv4.
IPv4/IPv6 node: A node that implements both IPv4 and IPv6.
IPv6 node: A node that implements IPv6. IPv4/IPv6 and IPv6-only nodes are both IPv6 nodes.
IPv4 node: A host that implements IPv4. IPv4/IPv6 and IPv4-only nodes are both IPv4 nodes.