Contents

About TCP/IP Configuration and Reference (SC41-5420) . . . . . . . . v

Prerequisite and related information . . vii

Operations Navigator . . . . . . . . . . . vii

How to send your comments . .

. .

. ix

Summary of changes

. .

. xi

Chapter 1. Configuring TCP/IP . .

.

. . 1

What you need to know before you can configure TCP/IP . . . . . . . . . . . . . . . . 1

Planning for TCP/IP Installation and Configuration

. 2

Gathering Information About your Network . . . 2

TCP/IP Planning Checklists

. 3

Line Description Parameters Checklist . . . .

. 3

Local TCP/IP Host Information Checklist. . .

. 4

Installing the TCP/IP Application Programs . . .

. 5

Using the TCP/IP Administration Menu . . . .

. 6

Using the Configure TCP/IP Menu

. 7

Configuring TCP/IP using the EZ-Setup Wizard .

. 9

Configuring TCP/IP using the Command Line

 

Interface

. 9

Step 1—Configuring a Line Description . . .

. 10

Step 2—Configuring a TCP/IP Interface . . .

. 10

Step 3—Configuring TCP/IP Routes . . . .

. 12

Step 4—Configuring TCP/IP attributes . . .

. 16

Step 5—Configuring TCP/IP Remote System

 

Information (X.25)

. 16

Step 6—Configuring TCP/IP Host Table Entries

18

Adding an Entry to the Host Table . . .

. 18

Work with TCP/IP Host Table Display . .

. 19

AnyNet/400: APPC over TCP/IP . . . .

. 22

Step 7—Configuring the Local Domain and Host Name . . . . . . . . . . . . . . . 22

Domain Name System (DNS) Server . . . . 23

Step 8—Starting TCP/IP and TCP/IP Servers .

. 24

TCP/IP Jobs

.

25

End TCP/IP (ENDTCP)

. 26

Step 9—Verifying the TCP/IP Connection . .

. 26

Verifying Additional TCP/IP Connections . .

.

27

Verifying TCP/IP Connections with Host

Name—Example. . . . . . . . . . . 29 Verifying TCP/IP Connections with Internet Address—Example . . . . . . . . . . 30

Step 10—Saving Your TCP/IP Configuration . . 30

Chapter 2. TCP/IP: Operation,

 

 

Management, and Advanced Topics

. . 33

Network Status

.

. 33

Work with TCP/IP Network Status Menu .

.

. 33

Work with TCP/IP Interface Status . . .

.

. 34

Starting TCP/IP Interfaces

.

. 35

Ending TCP/IP Interfaces

.

36

Route-to-Interface Binding

.

36

Display TCP/IP Route Information . . . .

. 37

Work with TCP/IP Connection Status . . .

. 38

Ending TCP/IP Connections

. 40

Working with Configuration Status . . . .

. 41

Displaying TCP/IP Network Status Information

 

42

Display Multicast Groups

.

42

Displaying TCP/IP Interfaces

.

43

Displaying Associated Routes

. 44

Displaying Route Details Option . . . .

. 45

Displaying TCP/IP Route Information . .

. 46

Displaying TCP/IP Connections . . . .

. 48

Displaying Connection Totals

.

49

TCP/IP Host Tables

.

50

Managing TCP/IP Host Tables

. 51

Host File Formats

.

51

Host Table Information with *AIX Files . .

. 51

Host Table Information with *NIC Files . . . 51

Host Table Information with *AS400 Files .

. 52

Tips for Merging Host Tables

.

52

Merging TCP/IP Host Tables

. 52

Example: Successful Host Table Merge . .

. 53

Example: Partly Successful Host Table Merge

 

53

Managing the Host Table from a Central Site .

. 53

Step 1—Create the Host Table on Your Central

 

System

.

53

Step 2—Start FTP to a Remote System . .

. 53

Step 3—Tell FTP to Send the Host File to the

 

 

Remote System

.

53

Step 4—Merge the File

.

54

IP Routing and Internet Control Message Protocol

 

 

(ICMP) Redirecting

.

54

Dead Gateway Processing

.

55

Negative Advice from TCP or the Data Link

 

 

Layer

.

55

How IP Responds to Negative Advice . . .

. 56

Multihoming Function

.

56

Example: A Single Host on a Network over a

 

 

Communications Line

.

57

Example: Multiple Hosts on the Same Network

 

 

over the Same Communications Line . . . .

. 57

Example: Multiple Hosts on the Same Network

 

 

over Multiple Communications Lines . . . .

. 57

Example: Multiple Hosts on Different Networks

 

 

over the Same Communications Line . . . .

. 58

Example: Multiple Hosts on Different Networks

 

 

over Multiple Communications Lines . . . .

. 58

Example: The Multihoming function

. 59

Type of Service (TOS)

.

60

TOS Example

.

61

Multiple Routes

.

61

TCP/IP Port Restriction

.

62

Configuring TCP/IP Port Restrictions . . .

. 63

Related Tables and the Host Table

.

65

Using X.25 PVC instead of SVC

. 67

© Copyright IBM Corp. 1997, 2001

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IBM SC41-5420-04 manual Contents