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X.25 iX Network Link For HP 3000 Series 900, Technical Data
Product Numbers J2070A, J2079A, 36939A, D2355A, 2340A, 2343A
Introduction
The X.25 iX network link is a high performance networking solution
that provides connectivity to public and private X.25 packet switching
networks for HP 3000/900 computers.
[Figure: X.25 Network, Caption: none]
Based on the modular architecture of the Datacommunications and
Terminal Controller (DTC) product, X.25 iX network link offers an
integrated, flexible and scalable X.25 solution for HP 3000/ 900
computers in multi-systems, multi-vendors and PAD terminal access
environments.
For information on other DTC products, refer to the DTC family
datasheet (which presents the complete DTC family, the target
environments, and supported devices) and to the individual product
datasheets:
DTC 16TN: HP J2060A
DTC 72MX: HP J2070A
DTC 16iX: HP J2062A
DTC16: HP 2340A
DTC48: HP 2345A
DTC Management: HP D2355A
HP J2120A
X.25 iX Network Link: HP J2079A
HP 3000 Telnet Access: HP J2080A
(also included in the Networking Communications Specification Guide).
Product highlights
The X.25 iX network link for HP 3000/ 900 computers is a X.25
connectivity solution based on the DTC hardware and software
architecture, consisting of 3 separate components:
o DTC/X.25 network access card
o X.25 /iX system access
o DTC/X.25 management.
The X.25 iX network link achieves high performance networking by
offloading protocol processing from the HP 3000/ 900 host to an
optimized Network Access card in the DTC. The LAN-based architecture of
the DTC allows multiple HP 3000/900 hosts to share the same X.25 line,
making cost-effective use of the X.25 network subscription.
DTC/X.25 network access card
This product is available for DTC 16 and DTC 72MX. The product is based
on a high performance VLSI card residing in the DTC, used to process the
X.25 protocols. The necessary software is downloaded to the DTC by the
DTC management platform (HP 3000/900 or DTC management Openview Windows
workstation).
The DTC/X.25 Network Access card features:
o X.25 protocol handling.
o Support of remote PAD access function (CCITT X3, X28 and X29) allowing
access to multivendor hosts (HP 3000/900 and Telnet-TCP/IP hosts) for
terminals, PCs and printers attached to remote X.25 PADs. PAD access
can be either direct to a single host, or user-selectable to any host
on the LAN, through the DTC user interface.
Connectivity of remote PAD terminals can be secured and restricted using
PAD access lists, based on calling X.25 addresses and configured by the
DTC /X.25 management product. Security on remote X.25 host access is
implemented with Local User Group utility, which filters incoming and
outgoing calls based on calling and called X.25 addresses respectively.
X.25/iX System Access
This software product resides on the HP 3000/900 computer. It provides
interconnection of Defense Advanced Research Projects Agency (DARPA)
TCP/IP protocols (layers 3 & 4 of the OSI reference model) with X.25
layer 3 of the DTC/X.25 Network Access software across the IEEE 802.3
LAN. Note that X.25 iX System Access is not an X.25 protocol
implementation, but provides an X.25 addressing and facility interface
between the HP 3000/900 computer and the DTC.
This product allows system to system communication with remote
computers, either using NS/3000iX Network services (HP 36920A), ARPA FTP
service (HP 36957A), or OSI FTAM service (HP 36971A and HP 36972A).
SNA connectivity for HP 3000/900 to IBM communication over X.25 is
provided by the SNA/X.25 link/iX product (HP 30298A), which allows
HP SNA services to be supported over an X.25 network. (Refer to the
SNA/X.25 link/iX datasheet for more information).
Programmatic access to X.25 level 3 is included, to allow users to
develop their own protocols and services for communication with remote
HP or non-HP computers over X.25 link.
DTC/X.25 management
This product is part of the DTC Manager application. It performs the
X.25 iX network link configuration and management operations. Depending
on customer network topology and requirements, the DTC/X.25 management
product can be installed on two different platforms:
o On a HP 3000/900: in this case, the product can only manage DTC/X.25
network links dedicated to this HP 3000/900 computer.
o On an HP Openview Windows workstation. In this case, up to 60 X.25 iX
network links can be simultaneously managed by a single HP Openview
Windows workstation.
HP Openview (PC-based) DTC Manager software provides an easy to use
graphical user interface and the possibility of integrating management
applications for other network elements (Switch/Pad Manager for 2335 and
Model 45Plus, Openview Sysman) on the same Openview Windows workstation.
Product specifications
DTC 72MX / X.25 Network Access card specifications
o Up to 32 local HP 3000/900 hosts supported per DTC 72MX/X.25 Network
Access card.
o Up to three DTC 72MX/X.25 Network Access cards supported per DTC 72MX.
o Each X.25 Network Access card able to support up to 256 Switched or
Permanent Virtual Circuits (VC):
-256 VCs (packet size up to 512 bytes).
-150 VCs (packet size up to 1024 bytes).
-100 VCs (packet size up to 2048 bytes).
-54 VCs (packet size up to 4096 bytes).
o CCITT 1980 and 1984 compliance for X.25, X.3, X.28 and X.29 protocols.
o Compliance with standard Defense Data Network (DDN) specifications.
o Acceptance of all CCITT 1984 X.25 user and DTE facilities for host-to-
host connections for processing at the X.25/iX level.
o Closed User Groups (CCITT 1980) supported with PAD access.
o X.25 physical interfaces:
-RS232C (line speed up to 19.2 kb/s)
-V.35 (line speed up to 64 kb/s)
o X.25 LAP-B level 2 parameters:
-Modulo 8 or 128 frame sequence numbering.
-Window sizes: 1-7.
-Frame sizes: as required by Level 3.
o X.25 level 3 parameters:
-Modulo 8 sequence numbering.
-Window sizes: 1-7.
-Throughput classes: 7-12 (speed up to 64kb/s).
-D-bit and Q-bit.
-Switched Virtual Circuit.
-Permanent Virtual Circuit. PVC is only supported for customer-
designed applications using direct X.25 packet level 3 programmatic
access. (Remote PAD to Host connection is not supported over PVC)
-Packet sizes: 32 - 4096.
o PAD functionalities:
-Supported packet sizes: 128, 256 and 512.
-PAD support for HP 3000/900 connected to the same LAN as the DTC.
-PAD support for HP 3000 MPEV, HP 9000 and non-HP systems through DTC
extended switching and Telnet-TCP/IP protocol.
-PAD printers are only supported for system access via a LAN (no back-
to-back)
-Only character mode and VPlus block mode applications are supported
with PAD functionality.
-Multisession is not available for remote PAD users.
DTC 16 / X.25 Network Access card specifications
o Up to 32 local HP 3000/900 hosts supported per DTC 16/X.25 Network
Access card.
o One DTC 16/X.25 Network Access card supported per DTC 16.
o Each X.25 Network Access card able to support up to 32 Switched or
Permanent Virtual Circuits (VC).
o CCITT 1980 and 1984 compliance for X.25, X.3, X.28 and X.29 protocols.
o Compliance with standard Defense Data Network (DDN) specifications.
o Acceptance of all CCITT 1984 X.25 user and DTE facilities for host-to-
host connections for processing at the NSX.25/iX level.
o Closed User Groups (CCITT 1980) supported with PAD access.
o X.25 physical interface:
-RS-232C (line speed up to 19.2 kb/s)
o X.25 LAP-B level 2 parameters:
-Modulo 8 or 128 frame sequence numbering.
-Window sizes: 1-7.
-Frame sizes: as required by Level 3.
o X.25 level 3 parameters:
-Modulo 8 sequence numbering.
-Window sizes: 1-7.
-Throughput classes: 7-10 (speed up to 19.2 kb/s).
-D-bit and Q-bit.
-Switched Virtual Circuit.
-Permanent Virtual Circuit. PVC is only supported for customer
-Designed applications using direct X.25 packet level 3 programmatic
access. (Remote PAD to Host connection is not supported over PVC)
-Packet sizes: 32-4096.
o PAD functionalities:
-Supported packet sizes: 128, 256, and 512.
-PAD support for HP 3000/900 connected to the same LAN as the DTC.
-PAD support for HP 3000 MPEV, HP 9000 and non-HP systems through DTC
extended switching and Telnet-TCP/IP protocol.
-PAD printers are only supported for system access via a LAN (no back-
to-back)
-Only character mode and VPlus block mode applications are supported
with PAD functionality.
-Multisession is not available for remote PAD users.
X.25 / iX System Access specifications
o Supports Defense Advanced Research Projects Agency (DARPA) standard
Transmission Control Protocol / Internet Protocol (TCP/IP).
o Supports up to 11 Network Interfaces per HP 3000/900 host.
o Supports up to 11 DTC/X.25 Network Access cards per NI.
o Can reach up to 1024 remote HP or non-HP computers.
o Implements NetIPC and Berkeley Sockets for TCP and X.25 programmatic
access.
o Multiplexes TCP/IP traffic over one X.25 virtual circuit.
o Supports NS/3000 iX Network Services (HP 36920A) for HP 3000 to
HP 3000 communication.
o Supports ARPA FTP service (HP 36957A) for HP 3000/900 to HP or non-
HP system communication.
o Supports OTS transport and FTAM service (HP 36971A & HP 36972A) for
HP 3000/900 to HP or non-HP system communication.
o Supports SNA/X.25 link/iX (HP 30298A) for SNA connectivity between
HP 3000/900 to IBM systems over X.25 link.
o Includes NetTool, a set of tools to monitor, analyse and diagnose the
transport layer software.
DTC X.25 management specifications
------------------------------------------------------------------------
X.25 management product NMMGR utility HP Openview
DTC Manager
Platform HP 3000/900 systems PCs
User Interface ASCII Graphical (OpenView
(Vplus) (& MS-Windows)
Configuration management
Configuration X.25 levels 2 - 3 yes yes
Configuration X.25 system switching no yes*
Configuration X.25 PAD access & security yes yes*
Start/Stop X.25 card (& upload databases) yes yes
X.25/Padsup autorestart yes yes
X.25/Padsup profiles yes yes
Fault management
Reset X.25 card and X.25 LCI yes yes
Upload X.25 yes yes
Self Test X.25 card and Loopback yes yes
X.25 tracing & logging yes yes
X.25 site management no yes
------------------------------------------------------------------------
* Indicates parameters can be modified online
------------------------------------------------------------------------
Supported Essential Facilities
------------------------------------------------------------------------
1984 CCITT
X.25 Reference
------------------------------------------------------------------------
- Extended packet sequence numbering 6.2
- Incoming calls barred 6.5
- Outgoing calls barred 6.6
- Non-standard default packet size 6.9
- Non-standard default window size 6.10
- Flow control parameternegociation 6.12
- Throughput class negociation 6.13
- Closed User Group selection (1980 CCITT) 6.14
- Fast select request and acceptance 6.16/6.17
- Reverse-charging and acceptance 6.18/6.19
- Local charging prevention 6.20
- Hunt group 6.25
------------------------------------------------------------------------
Support Facilities with X.25 Level 3 Programmatic Access
------------------------------------------------------------------------
- Closed User Group related facilities 6.14
- Bilateral closed user groups 6.15
- Network user identification 6.21
- Chargin information 6.22
- Called line modified address notification 6.26
- Call redirection and notification 6.25/6.27
- Transit delay selection and indication 6.28
------------------------------------------------------------------------
Note: X.25 protocol implementation is provided by DTC/X.25 Network
Access.
Ordering Information
Ordering the DTC X.25 Network Access Card
For DTC 16
2340A opt. 310 When ordered with a DTC 16
2343D When ordered as add-on card
For DTC 72MX
J2070A opt. 1CW X.25 Network Access with RS232C interface when ordered
with a DTC 72MX
J2079A opt. 1CW X.25 Network Access with RS232C interface when ordered
as add-on card
J2070A opt. 1CX X.25 Network Access with V.35 interface when ordered
with a DTC 72MX
J2079A opt. 1CX X.25 Network Access with V.35 interface when ordered as
add-on card
Ordering the DTC X.25 Management
DTC manager running on an HP 3000/900:
Nothing to order
Integrated with the MPE/iX operating system (FOS)
DTC manager running on the HP OpenView Windows platform:
HP 32054D opt. 201 HP OpenView Windows Workstation (PC) preconfigured
with the DTC Manager application software
#ABA --> #ABZ Localization options (must order one)
Network connection options (must order one)
101 ThinLAN connection
102 ThickLAN connection
103 Ethertwist connection
D2355A DTC manager application software for an HP OpenView Windows (PC)
workstation
D1824D opt. 201 Update of an existing HP OpenView Windows Workstation
with the latest revision of software and DTC manager application
o The HP OpenView Windows workstation (HP 32054D) is an especially
configured HP Vectra, with PC software already installed. It includes
2Mb of additional memory, HP thinkjet printer, and MS-DOS, MS-Windows,
HP ARPA & Network Services /DOS, HP OpenView Windows, HP AdvanceLink
for Windows
Ordering the X.25/iX System Access
36939A X.25/ iX System Access
Right to use license option ( must order one)
0AF 20 Users License
UCY 40 Users License
UA9 64 Users License
UBD 100 Users License
UCN 160 Users License
UAT Unlimited Users License
Upgrade Credit options:
Use one of the following options when 36939A has been initially ordered
with Users License option:
UD8 Credit for 20 Users license
UCZ Credit for 40 Users license
UB9 Credit for 64 Users license
UDV Credit for 100 Users license
UBP Credit for 160 Users license
For installed base, use one of the following options when 36939A has
been initially ordered with Processor option:
0CD Credit for processor option 310
0GJ Credit for processor option 315
0CE Credit for processor option 320
0CF Credit for processor option 330
0GL Credit for processor option 335
0GM Credit for processor option 340
UEK Credit for processor option 350
Note 1: For system to system communication, this product must be
ordered in addition to X.25 Network Access card. 36939A is not required
if only X.25 PAD support functionality is needed.
Note 2: In order to receive the upgrade credit, customers must select,
on the same order, the upgrade credit option that pertains to their
current user license option in addition to the new user license option.
Certified X.25 Packet Switched Networks
The following public Packet Switched Networks (PSNs) have certified
the X.25 iX Network Link. This list is current as of February 1993.
Please consult your HP Sales Representative for an updated list of
certified PSNs.
-----------------------------------------------------------------------
Country Network
-----------------------------------------------------------------------
Austria Datex-P
Belgium DCS
Brazil Renpac*
Finland Datapak
France Transpac
Germany Datex-P
Hong Kong Intelpak
Italy Itapac
Luxembourg Luxpac
Netherlands Datanet1
Norway Datapak
Spain Iberpac*
Sweden Datapak
Switzerland Telepac
United Kingdom PSS*
U.S.A Telenet
U.S.A Tymnet
U.S.A DDN
----------------------------------------------------------------------
* in process
Recommended Networking devices
The following devices are fully certified and tested for operation
with the X.25/ iX Network link. Both devices can also be managed from
the DTC management Openview workstation with the HP Openview SwitchPad
Manager application.
o HP Model 45 Plus: X.25 Multi-protocol switch. This product features
traffic concentration in multilinks and multiprotocol environments
(SNA, X.25 and Async).
o HP 2335A: X.25 PAD/Statistical multiplexer. This product allows
connection of remote asynchronous terminals and printers to a central
computer via an X.25 link.
For detailed information on these products, refer to the individual
product datasheets.
X.25 / iX Network Link documentation
Included with X.25 iX System Access product (36939A):
36939-90001 X.25 iX system access configuration guide
5958-8600 NetIPC 3000/iX Programmer's guide Reference Manual
Additional orderable manuals:
36923-61001 Guide to NS3000/iX documentation
36922-90007 NS3000/iX configuration, planning and design guide
36922-90010 NS3000/iX operations and Maintenance reference manuals
32022-61005 Using the Node Management services utilities
36922-90008 NS3000/iX Screen reference manual
5959-2836 NS3000/iX Error Message reference manual
Installation and Configuration Support Policy
The customer is responsible for loading the X.25 iX Network Link onto
the system. Hewlett-Packard will provide installation of the
Datacommunications and Terminal Controller (DTC), the DTC/X.25 Network
Access cards and the HP OpenView DTC Manager (if PC-Based Network
Management) and will perform minimum configuration of X.25 iX Network
Link in order to verify minimum functionality. These activities are
included in the product purchase price. For product configuration
tailored to the customer's specific needs, or for a complete
HP implementation, HP offers a comprehensive range of integrated and
flexible support services. Please refer to the Network Support data
sheets for more information on these services.
Pre-Installation Customer Responsability
The customer is responsible for the following:
o Providing HP with the information necessary to complete the Network
Implementation and Support Plan (NISP), including: system
configurations, logical network map identifying relevant traffic flow
and physical network map identifying relevant network hardware
components.
o Installing and verifying the communications line between the DTC and
the X.25 network.
o Completing all tasks related to the DTC TIO installation.
o When necessary, subscribing to the appropriate administration for
access to the public PSN.
o Updating the HP 3000 system to the proper release level and installing
the X.25 iX Network Link system software using AUTOINST, if HP 36939A
X.25 iX System Access is purchased. Refer to the HP 3000 MPE iX
Installation and Update Manual.
o Verifying that all of the necessary software modules have been
successfully installed.
o Performing a full system backups.
HP Responsability
Following the installation of the X.25 iX System Access (HP 36939A)
software, if purchased, HP is responsible for performing the following
tasks for the various components of the X.25 iX Network Link. To
install the DTC, HP is responsible for the following:
o Attaching the communication line from the X.25 network to the DTC/X.25
Network Access card.
o Configuring the DTC/X.25 Network Access card via the OpenView DTC
Manager or NMMGR.
o Verifying that the DTC/Network Access card properly operates.
To install Add-on DTC/X.25 Network Access cards, HP is responsible for
the following:
o Inserting the Add-on card in the DTC and performing the self-test.
o Attaching the communication line from the X.25 network to the Add-on
card.
o Configuring the DTC/X.25 Network Access card via the OpenView DTC
Manager or NMMGR.
o Verifying that the DTC/Network Access card properly operates.
To install the HP 36939A X.25 iX System Access for system-to-system
communication, HP is responsible for the following:
o Confirming that all the necessary software modules for the X.25 iX
System Access software have been installed and are at the correct
version level.
o Configuring the X.25 link on the HP 3000 using the customer supplied
values and cross-validating the DTC-related configuration with the
system configuration.
o Verifying the X.25 Link between the HP 3000 and the X.25 network
properly operates.
Post-Installation Customer Responsability
After HP has completed its installation responsibilities, the customer
is responsible for fully integrating the new installation to the
existing customer network.
Product requirements
Refer to HPSL database for the supported DTC & Operating System releases
From HP Networking Communications Specification Guide, 5091-3821E, 9205,
addendum 0293
Associated files: .DTCX25IX.gal, DTCX25IX.plt, dtcx25ix.doc
X.25 iX Network Link For HP 3000 Series 900, Technical Data