IBM AS/400E Conguration Steps, Creating the Line Description

(CHGDEVNET) commands. For more information on changing controller or device
descriptions, see
CL Reference (Abridged) .
Configuration Steps
Toconnect any of the communications adapters listed in Table 48 on page 505 to
the network, perform the following steps:
1. Create a line description (see “Creating the Line Description”).
2. Set the line description maximum frame size or SSAP maximum frame size. You
must consider this value when setting the maximum transmission unit (MTU) of
the TCP/IP interface (see “Setting the Maximum TransmissionUnit” on
page 507). This is not a required step because there are default MTU values for
all line types.
Creating the Line Description
If you have already configured a physical line, this existing line can be shared
between TCP/IP data and data from other protocols like SNAor OSI at the same
time. There is no need for a separate physical line to support TCP/IP.If a line
description does not exist for a physical IOP,you must create a new one. Use one
of the commands mentioned in Table48 on page 505 to create a line description or
network interface appropriate for your communications adapter. For more
information on creating line descriptions, see
LAN, Frame-Relay and ATMSupport ,
X.25 Network Support , and Communications Configuration . Pay particular attention
to the following items when creating or changing a line description for TCP/IP
communications:
vLine description name.
vSource Service Access Point (SSAP).
Line Description Name
Youneed the name of the line description when you configure TCP/IP on your
system (see “Step 1—Configuring a Line Description” on page30). Remember the
name you choose when you create the line description, or use the
Work with
Con��guration Status
(WRKCFGSTS) command to find the name of an existing line.
Source Service Access Point
If the line type supports source service access points (SSAP), you must specify
X'AA' as entries in the SSAP list. SSAP examples include Token-ring,Ethernet
IEEE802.3, DDI, and wireless. This occurs by default when you create a new line
description and leave the SSAP parameter at its default value of *SYSGEN.Ifyou
have an existing line description, use the appropriate change line description
command and add X'AA' to the SSAP list.
If the Ethernet standard prompt value is *ALL or IEEE8023, then you must specify
X'AA' as entries in the SSAP list. This occurs by default when you create a new line
description and leave the SSAP parameter at its default value of *SYSGEN.
If the Ethernet standard prompt is *ETHV2, the system sends and receives all
TCP/IP data in Ethernet Version 2 frames.You do not need to configure any
additional SSAPs for TCP/IP.
506 OS/400 TCP/IPConfiguration and Reference V4R4