IBM SC41-5420-04 User Manual

Page 89

Appendix A. Configuring a Physical Line for TCP/IP
Communication

On the iSeries 400, communication occurs through objects called lines, controllers,
and devices. The communications objects for iSeries TCP/IP are the line
descriptions, the network controller descriptions, and the network device
descriptions.

TCP/IP communicates over a variety of physical line types and network interfaces
(NWI). The command that defines the characteristics of the physical line
connection or network interface depends on the type of communications adapter,
as shown in Table 8.

Table 8. Line Types and Network Interfaces Supported by TCP/IP

Line type

Configuration command

Asynchronous

Create Line Description (Async) (CRTLINASC) See Link
Configuration
(http://publib.boulder.ibm.com/pubs/html/as400/v5r1/ic2924/info/
rzaiy/rzaiylinkline.htm) in the Information Center. If you are using
the Supplemental Manuals CD, then switch to the iSeries
Information Center CD to access this information.

DDI

Create Line Description (DDI Network) (CRTLINDDI)

Ethernet

Create Line Description (Ethernet) (CRTLINETH)

Frame relay

Create Line Description (Frame Relay Network) (CRTLINFR)

Frame relay NWI
using a frame relay,
token ring, Ethernet,
or DDI line
description

The frame relay NWI is created using the Create Network Interface
Frame Relay Network (CRTNWIFR) command.

The line description is created using the appropriate Create Line
Description command and attached to the frame relay NWI by
specifying the NWI and NWIDLCI parameters.

ISDN NWI using an
X.25 line description

The ISDN NWI is created using the Create Network Interface ISDN
(CRTNWIISDN) command.

The X.25 line is created using the Create Line X.25 (CRTLINX25)
command and attached to the ISDN NWI by specifying the NWI,
NWICHLTYPE, NWICHLNBR, and SWTNWILST parameters.

Point-to-Point

Create Line Description (PPP) (CRTLINPPP) See Link Configuration
(http://publib.boulder.ibm.com/pubs/html/as400/v5r1/ic2924/info/
rzaiy/rzaiylinkline.htm) in the Information Center. If you are using
the Supplemental Manuals CD, then switch to the iSeries
Information Center CD to access this information.

Token-ring

Create Line Description (Token-Ring Network) (CRTLINTRN)

Twinax

Create Line Description (TDLC) (CRTLINTDLC)

Wireless

Create Line Description (Wireless Network) (CRTLINWLS)

X.25

Create Line Description (X.25) (CRTLINX25)

You can describe the characteristics of the communications controllers by using the
Create Controller Description (Network) (CRTCTLNET) command or by letting the
system create the controller automatically when you activate TCP/IP. You only
need one network controller to describe all the systems with which you
communicate over any given line description.