3174-Workstation
Relationship
Adding the gateway feature
does
not affect normal 3174 functions
for
terminals
attached to the control
unit
terminal
(CUT) and distributed function
terminal
(OFT)
interface. (These
terms
are
explained in
"Terminals"
on page 2-19.)
Gateway
Feature Components
The gateway feature
is
made up of:
• A Type 3A Dual Speed (16/4Mbps) Communication adapter in the 3174
controller
• Utility and Control diskettes
for
Configuration Support-S (see note)
or
Configuration Support-B
• Cable.
Additional storage is needed with this feature.
The gateway feature can be ordered with the 3174 Establishment
Controllers,
or
it
can be
installed by the customer.
Note: Release 2
or
higher
of Configuration Support-S is required
for
remote 3174
Models
1R,
11R,
2R,
12R, 51R, and 62R.
Type 3A Dual Speed (16/4Mbps) Communication Adapter
Microcode
Program
Support
The type 3A adapter serves as the attachment between the 3174 and the
Token-Ring Network and provides for:
•
Transfer
of data to and from the ring
• Detection of ring and protocol errors.
Configuration
Support-S Utility and Control diskettes are provided with the gateway
feature. Configuration Support-B diskettes
may
be purchased.
All
configuration
support
for
3174 functions applicable to the SNA 3174 is included.
The
Utility
diskette provides the
ability
to:
• Customize the 3174 Establishment
Controller
• Assign a ring address
for
the
controller
containing the gateway feature
• Map the addresses of workstations
or
controllers
attached to the Token-Ring
Network to specific subchannel
or
SNA/SDLC addresses.
The Control diskette contains the
microcode
needed to connect and manage a
Token-Ring Network downstream from the controller.
The screen
images
used
for
customizing the gateway feature have the same
format
and interface used
for
customizing the 3174.
The gateway feature
is
supported by the
following
host-related programs:
• NetView
• Virtual
Telecommunications
Access Method (VTAM).
2-8 IBM 3270 Information Display System 3174
Establishment
Controller
Introduction
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