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SNA/X.25 Link/iX, Technical Data
For HP 3000 Series 900 Computer Systems
Product Number 30298A
SNA/X.25 Link/iX allows standardization on a single X.25 backbone
network for multivendor communications, specifically, HP 3000-to-HP 3000
and HP 3000-to-IBM communications.
SNA/X.25 Link/iX is a software product that enables HP SNA Services to
be supported over an X.25 network. The HP 3000 Series 900 system
running SNA/X.25 Link/iX communicates with IBM systems via an HP Model
45 Plus Multiprotocol X.25 Switch as a host PAD or via IBM X.25 NCP
Packet Switching Interface (NPSI). SNA/X.25 Link/iX allows
communications between an HP 3000 and an IBM system to occur
simultaneously with NS traffic to another HP 3000 over a single X.25
link.
[Figure: SNA/X.25 Link/iX, Caption: none]
SNA/X.25 Link/iX requires the installation and use of the X.25/iX
Network Link hardware and software components. X.25/iX Network Link
provides access to public or private X.25 packet-switching networks.
Benefits and Features
With SNA/X.25 Link/iX, network costs are reduced and management and
control of the network is simplified with the following features:
o A single link is shared by both NS and SNA services.
o An HP 3000 Series 900 system accesses multiple hosts with one card,
one access line, one X.25 connection.
o All HP SNA Services (LU 6.2 API/iX, NRJE/iX, IMF/iX, DHCF/iX) are
supported.
o Connections may be established via permanent virtual circuits (PVC) or
switched (incoming and outgoing) virtual circuits (SVC).
o Error codes, tracing records, and logging records are provided to
facilitate troubleshooting and diagnosis of problems.
o Packet sizes of 4096 bytes are supported at a maximum line speed of 64
Kbps.
o Configuration is consistent with HP network products - via NMMGR.
Functional Description
SNA/X.25 Link/iX allows an HP 3000 Series 900 computer to communicate to
an IBM system over a public or private X.25 network. SNA/X.25 Link/iX
is a psuedo-link product that supports a link-level protocol (QLLC) but
does not actually control the hardware. The true link level product
that operates in conjunction with SNA/X.25 Link/iX is the X.25/iX
Network Link.
SNA/X.25 Link/iX supports the Qualified Logical Link Control (QLLC)
protocol. QLLC is a special protocol developed by IBM to resolve the
differences between SDLC and X.25. It uses qualified X.25 packets to
send link control messages in a format similar to SDLC link control
messages.
SNA/X.25 Link/iX enables the HP SNA Services (LU 6.2 API, NRJE, IMF,
DHCF) running on an HP 3000 to communicate with an IBM system through an
IBM 37xx communications controller running NPSI. Alternatively, an
HP Model 45 Plus Multiprotocol X.25 Switching Node can be used as an
SNA/SDLC PAD, eliminating the need for NPSI.
SNA/X.25 Link/iX supports the simultaneous operation of two or more SNA
services. With an SNA service, SNA/X.25 Link/iX allows the HP 3000 to
appear as a Node Type 2.0 (T2.0) device. Depending upon the SNA
service, SNA/X.25 Link/iX can support several logical unit types that
include LU 1, LU 2, LU 3, and LU 6.2.
SNA/X.25 Link/iX encapsulates SNA data inside X.25 packets on the
HP 3000. These packets are sent to the X.25/iX Network Link to access
the X.25 network. The destination IBM communications controller or the
HP Model 45 Plus removes the X.25 packet information, and the original
SNA data is sent to the IBM host.
Product Requirements
HP Hardware and Software Requirements
o An HP 3000 Series 900 computer system running MPE XL Release 2.2 or
MPE iX Release 4.0 or later operating system.
o The X.25/iX Network Link hardware and software components.
o An HP Model 45 Plus Multiprotocol X.25 Switch or IBM NPSI.
o A block mode terminal supported by VPLUS for Node Management
configuration.
o One or more HP SNA Services (LU 6.2 API, NRJE, IMF, DHCF)
Host Hardware and Software Requirements
o An IBM System/370 compatible host (ie, Model 370, 308x, 43xx) with an
IBM 37xx communications controller. The following software must be
running on the host and communications controller:
- MVS/SP, MVS/XA, MVS/ESA, VSE or VM
- ACF/NCP Network Control Program
- ACF/VTAM Telecommunications Access Method
- NPSI NCP Packet Switching Interface (Version 2 Release 1 or later
for the IBM 3725, and Version 3 or later for the IBM 3745) or an
HP Model 45 Plus Multiprotocol X.25 Switch
Installation and Configuration Policy
The customer is responsible for loading the SNA/X.25 Link/iX software
onto the system.
Hewlett-Packard will perform minimum configuration of SNA/X.25 Link/iX
in order to verify minimum product functionality. This activity is
included in the product purchase price.
Customer Responsibility
Prior to having HP personnel Onsite to perform minimum configuration of
SNA/X.25 Link/iX, 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
- physical network map identifying relevant network hardware
components.
o Verifying that the necessary host mainframe software is installed and
configured to support SNA/X.25 Link/iX.
The customer should contact their HP Sales Representative for typical
host parameter values or consult the "HP SNA Products: ACF/NCP and
ACF/VTAM Guide" (5958-8543) for details.
o Verifying that the DTC/X.25 Network Access option (P/N HP 2340A #310,
2345A #3XX, 2343D, 2346D, 2346E, J2070A #1CX, J2070A #1CW, or J2079A)
is installed, configured, and verified to include accommodation for
the installation of SNA/X.25 Link/iX.
o Verifying that the X.25/iX System Access product (P/N HP 36939A) is
installed, configured, and validated for proper operation prior to the
installation of SNA/X.25 Link/iX.
o Updating the HP 3000 system to the proper release level and installing
the SNA/X.25 Link/iX software using AUTOINST. Refer to the HP 3000
Installation and Update Manual (36123-90001).
o Verifying that all of the necessary software modules have been
successfully installed by AUTOINST and are at the correct version
levels using the NMMAINT.PUB.SYS utility.
o Performing full system backups as necessary, and ensuring that the
HP 3000 system and personnel with HP 3000 system management knowledge
are available when HP is Onsite to complete the installation/minimum
configuration of SNA/X.25 Link/iX.
The customer is also responsible for completing the configuration in
order to fully integrate SNA/X.25 Link/iX into the existing customer
network after HP has completed the minimum configuration of SNA/X.25
Link/iX.
HP Responsibility
Following the installation of SNA/X.25 Link/iX, HP is responsible for
the following:
o Confirming that all of the necessary software modules have been
installed and are at the correct version level.
o Configuring the SNA/X.25 Link/iX product to a minimum configuration (1
PU and 1 LU) necessary to verify software and hardware functionality.
o Verifying the SNA/X.25 Link/iX configuration by issuing the SNACONTROL
STATUS command and ensuring that the PU activates when the SNA/X.25
Link/iX subsystem is started.
These steps complete HP's portion of the installation and minimum
configuration of SNA/X.25 Link/iX.
Additional Implementation Assistance
For implementation needs that go beyond installation, the customer can
either provide self-support or can purchase additional services from HP.
These services include Network Startup and HP ConsultLine. In addition,
the customer can also purchase service from HP on a time-and-materials
basis.
Network Startup includes implementation scheduling and coordination
assistance, network configuration and verification testing, and network
documentation.
Ordering Information
HP 30298A SNA/X.25 Link/iX License to use
Must order one User License Option. The User License Option must align
with the MPE iX License. Upgrade credits may be used where applicable.
User License Options:
OAF 20-user license
UCY 40-user license
UA9 64-user license
UBD 100-user license
UCN 160-user license
UAT Unlimited user license
Upgrade Credit Options:
UD8 Credit for 20-user license
UCZ Credit for 40-user license
UB9 Credit for 64-user license
UD9 Credit for 100-user license
UDV Credit for 160-user license
UBP Credit for Unlimited user license
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
In order to receive the upgrade credit, customers must select, on the
same order, the upgrade credit option that pertains to their current
processor/user license option in addition to the new user license
option.
Support Products
HP offers a spectrum of support service products to help plan,
implement, operate, and manage your multivendor network throughout the
network lifecycle.
For more information, contact your HP Sales Representative, or refer
to the HP data sheets in this Guide for the specific support services.
Documentation
30291-61000 SNA Link/iX Node Manager's Guide
5958-8542 HP SNA Products: Manager's Guide
5958-8543 HP SNA Products: ACF/VTAM and ACF/NCP Guide
Related Products
Reference data sheets in this Guide for the following related products:
o X.25/iX Network Link (P/N 2340A #310, 2345A #3XX, 2343D, 2346D/E,
J2079A, J2070A #1CX, J2070A #1CW, 36939A)
o HP Model 45 Plus Multiprotocol X.25 Switch (P/N J2000B, J2001B)
o SNA DHCF/iX (P/N 36935A)
o SNA IMF/iX (P/N 30293A)
o SNA NRJE/iX (P/N 30292A)
o LU 6.2 API/iX (P/N 30294A)
From HP Networking Communications Specification Guide, 5091-3821E, 9205
modified 9307, p 419
Associated files: la3821bx.plt, la3821bx.gal, a3821419.doc
SNA/X.25 Link/iX, Technical Data