HP 3000 Manuals

General Information Manual

HP 3000-to-IBM Communications 

Hewlett-Packard offers a broad range of communications products that
connect HP and IBM systems, which provide interactive, batch, and
programmatic communications capabilities.  Multiple alternatives exist
for HP to IBM interoperability, including SNA, binary synchronous
communications (BSC), and X.25.

BSC communication 

BSC Remote Job Entry.   

BSC Remote Job Entry (BSC RJE) software emulates IBM 2780 and
3780 workstations on HP 3000 systems.  BSC Link manages the data
communications protocol and link between the HP 3000 and the
IBM-compatible mainframe and communications controller.  BSC RJE users
can transmit batch jobs and receive output from a host processor
supporting standard IBM 2780/3780 devices.  Also BSC RJE users can
exchange files with another HP 3000 or other processors that emulate
standard IBM 2780/3780 devices.


          Figure 5-12.  BSC Communication 

SNA communication 

The HP 3000 supports a broad range of SNA services providing interactive,
batch, and program-to-program communication.  These services work in
conjunction with SNA Link, which provides the physical interface and
lower layer SNA software for SNA network communication.  A single SNA
Link can concurrently support all SNA services.  Products with an XL
suffix are available only on the HP 3000 900 Series.

SNA IMF.   

SNA Interactive Mainframe Facility (IMF) resides on an HP 3000 and allows
access to 3270 applications on the IBM mainframe.  In programmatic mode,
application programs on the HP 3000 emulate IBM 3270 terminals and
printers, exchanging data with the IBM host using intrinsics
(user-callable procedures).  In PassThru mode, users of HP terminals and
printers can access 3270 applications on the host as if they were using
IBM 3270 displays and printers.

SNA NRJE.   

SNA NRJE allows HP 3000 users to submit batch jobs and transfer files
between the IBM mainframe and the HP 3000 system.  Additionally, SNA NRJE
allows routing of the job output from the IBM host to any standard output
device on the HP 3000 , such as tape units, disk files, and printers.
SNA NRJE emulates an IBM 8100 DPPX/RJE workstation.

SNA LU6.2 API.   

SNA Logical Unit 6.2 Application Program Interface (LU6.2 API) gives HP
3000 users program-to-program communication between an HP 3000 and an IBM
mainframe in an SNA environment.  With SNA LU6.2, HP 3000s and IBM
mainframes can automatically prompt each other to start a program or send
data.  LU6.2 API also allows customers and third-parties to develop HP
3000 applications that use the LU6.2 protocol.  Peer-to-peer
communications (LU6.2 over PU2.1) will be supported on the HP 3000 900
Series system in 1991.

SNA DHCF/XL.   

SNA Distributed Host Command Facility/XL (DHCF/XL) allows users with IBM
3270 terminals to access interactively many applications on a 900 Series
system through their SNA network.  SNA DHCF is supported with both
TTY-line-mode and HP VPLUS block-mode applications.  SNA DHCF/XL can
support up to 120 concurrent sessions.


          Figure 5-13.  SNA Communications 

X.25 or SNA backbone 

HP SNA/X.25 Link/XL (SNA over an X.25 backbone) and HP NS over SNA/XL (NS
over an SNA backbone) provide the choice of supporting and managing only
one network backbone for HP-to-HP, IBM-to-IBM, and HP-to-IBM
communications.  If the environment is primarily IBM, NS over SNA/XL
provides an economical way to leverage an existing SNA network.  If the
environment is multivendor and includes a variety of systems, SNA/X.25
Link/XL provides standardization on an X.25 network, the OSI/ARPA
standard.

NS SNA/XL.   

NS over SNA/XL is a cost-effective way for HP 3000 900 Series users to
implement NS services over an existing IBM SNA backbone network.  NS over
SNA/XL requires NS3000/XL Network Services and SNA/SDLC Link/XL. SNA/SDLC
Link/XL manages the physical link to the IBM host and implements the
lower three SNA protocol levels.  Running both SNA/XL and NS/XL services
over the same SNA network connection reduces overall networking costs by
using the SNA network for NS backbone traffic.  NS can run over SNA/XL
simultaneously with other HP SNA service products, such as SNA IMF or SNA
DHCF/XL over the same network connection.

HP SNA X.25 Link/XL.   

HP SNA X.25 Link/XL reduces networking costs by consolidating NS and SNA
services on one X.25 link, while allowing access to multiple destination
host systems.  Fewer communication links are needed, resulting in
decreased monthly telecom costs and a simpler, more manageable network.
SNA X.25 Link/XL software supports HP SNA Services over an X.25 network.
The HP 3000 900 Series systems communicate with the X.25 network using
the DTC. The target IBM system can be accessed from either the X.25
network using an HP Model 45 Multiprotocol X.25 Switch or using the IBM
X.25 Network Packet Switching Interface (NPSI).

NetView integration 

The SNA/SDLC Link/XL product provides link-level alerts to IBM's network
management product, NetView.  If an HP 3000 900 Series system goes down,
the SNA/SDLC Link/XL will send a delayed link-level alert to the NetView
console when the link comes back up.  This feature also allows an
operator on the HP node to send an operator-generated alert to the
NetView Console.

Electronic mail integration 

HP SNA Distribution Services/XL (HP SNADS/XL) allows users on HP systems
to exchange electronic messages between HP DeskManager and IBM Office
Vision/MVS (DISOSS). HP SNADS/XL is required on only one HP 3000 Series
900 system in an HP DeskManager network.  HP Desk users on the HP 3000
can transparently send messages and documents of PC files to IBM DISOSS
users.  Messages can also be exchanged with users of other vendor's
electronic mail systems who are connected to the corporate IBM host using
IBM SNA/DS.

IBM does not support SNA/DS for PROFS on VM mainframes; however, HP
Deskmanager can access PROFS through HP X.400.  Please refer to the "OSI
services" section for more detail on X.400 connectivity.

MPE/iX 5.0 Documentation