Contents
About TCP/IP Configuration and Reference (SC41-5420) ........xv
TCP/IP Topicsin the Information Center ...............xv
Who should read this book .................... xv
AS/400 Operations Navigator ...................xvi
Installing Operations Navigator..................xvi
Prerequisite and related information.................xvii
How to send your comments ...................xvii
Chapter 1. TCP/IP on AS/400 ................... 1
Linking Networks Together .................... 1
Internetwork Communications ................... 2
Internet Addresses ....................... 2
Accessing the Internet..................... 3
IP Security ......................... 4
Classes of Networks ..................... 4
IP Subnets .......................... 5
Subnetworks and Subnet Masks .................. 6
Broadcast Addresses ...................... 8
Domain Name System (DNS) ................... 9
Domain and Host Name .................... 9
Naming Conventions for Domain Names and Host Names .......10
Routing ...........................12
Introduction to TCP/IP Protocols on AS/400 ..............12
Application Protocols ......................13
Application Protocol Standards..................13
OS/400 Network File System Support ...............15
Application Program Interfaces (APIs) ............... 15
Transport Protocol ....................... 16
Transmission Control Protocol (TCP) ................16
User Datagram Protocol (UDP) ..................17
TCP and UDP Ports ..................... 17
Point-to-Point TCP/IP .....................17
Internetwork Protocol ...................... 18
Internet Protocol .......................18
Internet Control Message Protocol ................19
Internet Group Management Protocol ...............19
Address Resolution Protocol ..................19
AnyNet/400......................... 19
Chapter 2. Configuring TCP/IP .................. 21
What you need to know before you can configure TCP/IP.........21
Planning for TCP/IP Installation and Configuration ...........22
Gathering Information About your Network .............22
Installing the TCP/IPApplication Programs ..............23
TCP/IP Addressing .......................24
Using the TCP/IPAdministration Menu ................26
Using the Configure TCP/IP Menu .................27
Configuring TCP/IP using the Command Line Interface..........29
Step 1—Configuring a Line Description ..............30
Step 2—Configuring a TCP/IP Interface ..............30
Step 3—Configuring TCP/IP Routes................32
Step 4—Configuring TCP/IP attributes ...............36
Step 5—Configuring TCP/IP Remote System Information (X.25) .....36
© Copyright IBM Corp. 1997, 1999 iii