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Power Tools 1993 October - Disc 2
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Power Tools (Disc 2)(October 1993)(HP).iso
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HP-DEC Networking Information
The following statement explains HP's strategy for providing
networking between HP and DEC computers. The statement is
intended for internal HP audiences and should NOT be distributed
to customers.
This statement has been revised to include the position of the
ASCENT*DNI product from Control Data Corporation (Integrated
Information Systems).
INTRODUCTION
HP's DEC Connectivity Strategy is based on the convergence we see
between the HP and DEC networking strategies and our belief that
industry standard networking is the best foundation for a multivendor
environment. We have been relying on our ability to convince customers
to act in their best long term interests by augmenting DECnet with
industry standard protocols. We have been quite successful with those
customers who have identified the benefits of standard networking and
are willing to take control of their network architecture by
implementing a network based on standards rather than DEC proprietary
protocols.
DECnet Phase IV Environment
Since our recommendations center around the coexistence of DECnet and
TCP/IP networks, the main implementation vehicle becomes establishing
one or more gateways between the two networks. These gateways are
nodes which exist on both networks, and can be implemented in many
different ways:
* Add TCP/IP support to an existing VMS VAX running DECnet
* Use an Ultrix VAX running TCP/IP and DECnet
* Use an Apollo division DN Series Workstation running DECnet
and TCP/IP
* Use an HP 9000 Series 300 or 800 Workstation running DECnet
and TCP/IP
* Add NS/VAX support to an existing VMS VAX running DECnet
For MPE V systems, this TCP/IP gateway can be a VAX/VMS system running
NS/VAX software, a VAX/VMS system running ARPA software, or a
VAX/Ultrix system running DECnet-ARPA gateway software. To utilize the
ARPA-based gateways, the MPE V systems must run the Wollongong ARPA
software.
For MPE XL systems, the best gateway is a VAX/VMS system running
NS/VAX. When ARPA services are available for MPE XL systems, the ARPA-
based gateways can be used as well. Apollo division DN Series systems
or HP 9000 workstations can be connected directly to DECnet Phase IV.
The DN Series systems use the Apollo TECHnet product (LA 620), and the
HP 9000 systems can use the ASCENT*DNI product available from Control
Data Corporation (Integrated Information Systems). A DN Series or HP
9000 Series workstation equipped with this software can act as a
gateway between the DECnet world and the TCP/IP world. The advantage
of these gateways is that they require no additional software on any
DEC system - the gateway could be provided completely by HP. For all
customers, MPE V, MPE XL, HP-UX, and Domain/OS, HP's recommended
approach is to utilize ARPA/TCP/IP today, with future migration to OSI.
Our message remains "Use industry standard networking to implement
multivendor environments." Not all customers are receptive to this
message. DECnet Phase IV does not include TCP/IP support. DEC and
several third parties do sell TCP/IP as a separate product, but DEC
strongly discourages its use. Customers who base their networking
architecture primarily on DEC's recommendations are thus reluctant to
install TCP/IP. It is very difficult to sell HP's DEC connect strategy
to these accounts prior to the release of DECnet Phase V. The Apollo
TECHnet and ASCENT*DNI products offer an additional alternative for
these accounts, and should be used in cases where the customer has a
very high commitment to DECnet Phase IV, or a short term need for
DECnet compatibility. Even with these customers we should point out
the benefits of moving to standards-based networking. DECnet Phase V
Environment Problem accounts will be much more receptive to the HP
strategy when they have installed DECnet Phase V, scheduled for
delivery within the next 6 months. The difference is that DECnet Phase
V includes OSI and DEC recommends it for connection to non DEC systems.
In fact, DEC is positioning DECnet Phase V as an OSI product. The HP
strategy thus aligns with DEC's strategic recommendations. Of course,
due to the anticipated long TCP/OSI coexistence period, many customers
will elect to keep their current TCP/IP connections in the Phase V
environment. HP will satisfy these customers by offering continued
support for TCP/IP and providing OSI products which gracefully coexist
with the TCP/IP products. Even in the Phase V environment, we will not
satisfy all potential customers with the OSI strategy. OSI currently
does not offer all the functionality of DECnet services. However, OSI
functionality will improve with time, making the HP strategy
progressively more acceptable. Other market forces, such as the GOSIP
mandate from the U.S. Government and similar directives abroad will
increase OSI appeal. We believe that DEC will be aggressive in
encouraging their installed base to move to DECnet Phase V. This
belief is supported by DEC statements at conferences and user group
meetings and plans of accounts such as DuPont. As this movement to
Phase V takes place, HP will be converging DOMAIN OS and HP-UX to a
common operating system. HP does not plan to support DECnet on the
converged operating system. We believe OSI will have evolved
substantially by that time, reducing the demand for DECnet services
enough that support will not be necessary. SUMMARY It is in the
customer's best interest to implement multivendor environments using
standard networking. In today's Phase IV environment we can connect
all HP-UX and MPE systems with a variety of TCP/IP gateways (TCP/IP on
VMS or Ultrix systems). DN Series and HP 9000 Series systems connect
directly via the Apollo TECHnet and ASCENT*DNI products as well as via
ARPA gateways. As DECnet Phase V becomes widely installed, the need
for gateways or direct support of DECnet services will decrease. The
HP Strategy of encouraging use of TCP/IP today and OSI in the future is
supported by the comments of numerous industry analysts. We firmly
believe that it best meets the needs of our customers.
###
For more information on the ASCENT*DNI product you may contact Randy
Barker at CDC at (513) 427-6379.