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HP-UX IPv6 Porting Guide: HP-UX 11i v2 September 2004 > Chapter 1 Introduction
Terminology |
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This section provides brief definitions of some common general IP and IPv6 terms. 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. 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. |
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