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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
Asynchronous
DDI
Ethernet
Frame relay
Frame relay NWI
using a frame relay,
token ring, Ethernet,
or DDI line
description
ISDN NWI using an
X.25 line description
Point-to-Point
Token-ring
Twinax
Wireless
X.25
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.
© Copyright IBM Corp. 1997, 2001
Configuration command
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.
Create Line Description (DDI Network) (CRTLINDDI)
Create Line Description (Ethernet) (CRTLINETH)
Create Line Description (Frame Relay Network) (CRTLINFR)
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.
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.
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.
Create Line Description (Token-Ring Network) (CRTLINTRN)
Create Line Description (TDLC) (CRTLINTDLC)
Create Line Description (Wireless Network) (CRTLINWLS)
Create Line Description (X.25) (CRTLINX25)
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