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XX-97398-63

September 1978

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Document:	10.78.02 7809 DECnet Phase II Products
Order Number:	XX-97398-63
Revision:
Pages:	4
Original Filename:	http://bitsavers.org/pdf/dec/spd/10.78.02_7809_DECnet_Phase_II_Products.pdf

OCR Text

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Software Product Description
PRODUCT NAME: OeCnet Phase II Products, Version 1.0
DESCRIPTION:
DECnet Phase II is the collective name for the set of
software products that extend various DIGITAL operating systems by enabling the user to interconnect
these systems with each other to form computer networks. The DECnet Phase II products include DECnet-11M Version 2, DECnet-11S Version 2, DECnet110 Version 2, DECnet-IAS Version 2, DECnetiE Version 1, DECnet-RT Version 1, DECnet-VAX, Version 1
and DECnet-20, Version 1.0. The DECnet user can
configure a variety of networks, to satisfy a variety of
applications, by choosing the appropriate CPUs, line
interface (and speeds), and operating system
software.
In order to satisfy these widely varying applications,
DEC net allows the user to build networks from a
range of systems and communications components.
DECnet allows users to interconnect systems using
serial asynchronous, serial synchronous, and parallel
facilities. When configuring DECnet systems, both
ends of any given link must use the same type of
communications discipline (e.g., synchronous, asynchronous or parallel) running at the same line speed.
DIGITAL Network Architecture:
DECnet includes a set of network protocols, each of
which is designed to fulfill specific functions within the
network. Collectively, these protocols are known as
the DIGITAL Network Architecture, or DNA. The major
protocols, and their functions, are:
DIGITAL Data Communications Message Protocol
:DDCMP) - DDMCP handles the physical link traffic
control and phYSical link error recovery within DECnet. DDCMP operates over both full and half duplex
facilities, using serial synchronous or serial asynchronous facilities in a point-to-point mode. DDCMP has
~he following important characteristics:
• operates over a wide variety of hardware types
• makes efficient use of full-duplex channel capacity
• allows transmission of all data types (including binary) with low overhead
• allows standard (character-oriented) communications hardware to be used
• uses CRC-16 for error detection, with recovery by
retransmission
• effective on earth/satellite links (or other links) with
long signal propagation delays

A full specification for DDCMP Version 4.0 is available
on request. DIGITAL does not regard DDCMP as a

September 1978

SPD 10.78.2

proprietary protocol, and allows others to implement
and use the protocol, providing an acknowledgment
of the SOurce is made in any public documentation.
Network Services Protocol (NSP) - NSP handles
network management functions within DECnet. This
includes sending messages between two nodes and
routing messages within any given node. NSP makes
it possible for two programs on different machines to
establish a logical communications channel (or logical
link) between the programs, and to exchange data
using this logical link. These programs need not be
aware of either the nature of the physical link (full/half
duplex, parallel or serial) or the nature of the protocols supporting the physical link. NSP has the following important characteristics:
• dynamic creation of logical links between tasks
• exchange of data between tasks on a solicited basis
• exchange of data between tasks on .a non-solicited
(e.g., interrupt) basis
• nodes can be dynamically connected within the network once NSP initialization occurs over a previously established physical link

A full specification for the Network Services Protocol
Version 3.0 is available on request. NSP is not a
proprietary protocol.
Data Access Protocol (DAP) - The Data Access Protocol enables programs on one node of the network
to use the I/O services available on other network
nodes. Each operating system in DECnet provides facilities for translating its own unique 110 calls into the
DAP standard, and vice versa. Thus, DAP enables
data requests to be processed in a meaningful way by
many (possibly heterogenous) operating systems.
DAP's facilities include:
• remote file access, including OPEN, READ, WRITE,
CLOSE and DELETE for sequential and random access files, and command files

It should be noted that each DAP function requires
support at both ends of the link. At the local node,
where the user program initiates a data request, the
DAP support must package the request for transmission through the network. At the remote node (where
the device or file resides), the DAP support must
cause the appropriate actions to be performed. Not
all systems support both local. and remote portions of
each DAP operation.
A full specification for the Data Access Protocol Ver-

AE-D440C-TC

SPO 10.78.2

OECnet Phase II Products, Version 1.0

-2-

sion 4.1 is available on request. DAP is not a proprietary protocol.
DECnet Functions:
Digital Network Architecture, implemented across a
wide range of operating systems and hardware configurations, enables users to build a variety of networks. While such networks have a common attribute,
individual systems in the network may have certain
system-specific attributes. The common attribute is:
• Task-to-task communication: Programs or tasks on
one system can create log~cal links and exchange
data with programs or tasks on other systems in a
real-time fashion.

Additionally, ,many DECnet s",stems support other
features which are useful ih -network environment.
These include:
• Inter-system File Transfer: This facility allows an entire data file to be moved between systems, at either program or operator request. The common file
type supported across systems that provide this
functionality is sequential ASCII.
• Batch/Command File Submission: Local users can
submit batch or command files to remote systems
for execution.
• Batch/Command File Execution: Remote users can
cause a batch or command file which resides at a
remote node to be submitted for execution at the
local node.
• Remote File Access: Tasks or programs can access
sequential files on a record-by-record basis from
files located on remote nodes.
• Down-line System Loading: Initial memory images
for DECnet-11 S systems in the network can be
stored on the local system, and loaded on request
into other systems in the network~ Remote systems
usually require the presence of a network bootstrap
loader, implemented in read-only memory.
• Down-line Task Loading: Programs to be executed
on DECnet-11S systems in the network can be
stored on the local system, and loaded on request
into other systems, under the jOint control of the
operating systems at both ends of the physical link.
This and the preceding feature simplify the operation of network systems which do not have mass
storage devices.
Table I provides the information for determining if the
preceding functions are available on a particular
DECnet system. Note that the above descriptions define the minimum capabilities provided by a given
function. Additional capabilities, above those described as the minimum for a function, may be available between two of the same or different DEC net
systems.
Configuring DECnet Networks:
DECnet provides a basic level of interconnection
between specific products. However, each DECnet
system has its own level of functions. The user can
recognize specific constraints when configuring a network of heterogeneous DECnet systems. Table" lists
the communication interfaces supported by each
DECnet Phase II product for particular class of line

characteristics (e.g., 9.6 kilobits/second, synchronous). Each column lists the connections that are permissible for those line characteristics in cross-product
network configurations. Individual product SPD's
must be consulted to determine whether any particular configuration violates the maximum number of
communications interfaces and line speeds for an individual product.

TRAINING CREDITS:
No training credits are included with a DECnet software license. Training courses on DECnet software
are scheduled at regular intervals in DIGtTAL's Training Centers. Arrangements should be made directly
with DIGITAL's Educational Services Department.
SUPPORT CATEGORY:
Category A Software Support, as described in the
Software Support Categories Addendum to this SPD,
will be provided with DECnet Phase II product options
that include support services.
The installation of DECnet software under Category A
Support Services in' any host system will convert that
system to a node with the potential of being connected to a DECnet network. Category A installation does
not include demonstration of network connection.
The Customer may purchase DECnet Phase " product license options that do not include support services. The category of support applicable to such
software is Category C. While a DECnet product option that does not include support services is connected to a DECnet network, the category of support
applicable to all DEC net products in that network is
Category C.

INSTALLATION SERVICE:
The installation of the Software under Category A
Software Support shall consist of:
1. Verifying that the software kit contains all software modules and manuals offered.
2. Generating the DECnet software.
3. Demonstrating th~ use of the majority of operator commands and system utilities.
4. Running a sample DIGITAL-supplied program.
5. Introducing the Customer to the sources of software information and services.
Before installation of the Software, the Customer
must:
1. Install or have installed all hardware, including
terminals, to be used on the system.
2. Make available to DIGITAL personnel all hardware, including terminals, to be used during installation for a reasonable period of time each
day, as mutually agreed upon by DIGITAL and
the Customer, until installation is complete.
Delays caused by any failure to meet these responsibilities will be charged at the then prevailing rate for
time and materials.

PREREQUISITE SUPPORT:
A Network Profile and DECnet Support Plan covering
all intended network nodes and their support must be

DECnet Phase II Pr~ducts, Version 1.0

SPD 1'0.78.2

·3·
prepared jointly by the Customer and DIGITAL.

ORDERING INFORMATION:
All binary licensed software, including any subsequent updates, is furnished under the licensing
provisions of DIGITAL's Standard Terms and Conditions of Sale, which provide in part that the software
and any part thereof may be used on only the single
CPU on which the software is first installed, and may
be copied, in whole or in part (with the properinclusion of the DIGITAL copyright notice and any DIGITAL
proprietary notices on the software) only for use on
such CPU. All source licensed software is furnished
only under the terms and conditions of a separate
Software Program Sources Agreement between Purchaser and DIGITAL.
When multiple systems are connected in a single network, each individual system must be licensed
separately with regard to both operating system and
DECnet software.

Before installation of the Network, the Customer
must:
1. Obtain, install, and demonstrate operational to
DIGITAL's satisfaction any modems and other
equipment and facilities necessary to interface
DIGITAL's communications line interfaces and
terminals.
2. Make available to DIGITAL's personnel all hardware, including communications facilities and
terminals, to be used during installation for a
reasonable period of time each day, as mutually
agreed upon by DIGITAL and the Customer.
Delays caused by any failure to meet these responsibilities will be charged at the then prevailing rate for
time and materials.

Level II Services
OS912 -S- Daily Software Consulting Services
(media: Z)
OS926 -S- Weekly Software Consulting Services
(media: Z)
OS922 -S- 6-Month Resident Software Consulting
Services (media: Z)
OS924 -S- 12-Month Resident Software Consulting
Services (media: Z)

ADDITIONAL SERVICES:
Software Consulting Services are offered on a time
and materials basis to meet specific customer needs.
Two levels of consulting services are available:
Level I Services
OJ680 -S- DECnet Level I Services (media: Z)

Level II services provide for additional support as
mutually agreed upon by DIGITAL and the Customer
in the DEenet Customer Support Plan.

Level I services provide for the integration of DECnet
nodes that carry Category A support into an interconnected network, with verification 9f network integrity
and demonstration of DECnet functions. Level. I services use DIGITAL sample procedures only.

Table I

Task-to-Task

DECn.et-11 M DECnet-11 S DECnet-11 0 DEC net-lAS DECnetiE DECnet-RT DECnet-VAX DECnet-20
Version 2.0 Version 2.0 Version 2.0 Version 2.0 Version 1.0 Version 1.0 Version 1.0 Version 1.0
YES
YES
YES
YES
YES
YES
YES
YES

Intersystem
File Transfer

YES

Command/Batch
File Submission

YES 1

YES

YES1

Command/Batch
File Execution

YES

Remote File Access

YES

YES 2

YES

Down-Line
System Loading

YES

NO
NO
YES
NO
YES
YES
NO
Down-Line
Task Loading
1 Cannot submit files to DECnet/E systems. Can tell DECnet/E to execute batch files already at the DECnet node.
20ffers local users network access to remote file systems. Does not allow users on remote systems to access local files.

SPO 10.78.2

DECnet Phase II Produ.cts, Version 1.0
-4-

Table"

DECnet-11M
Version 2.0

DECnet-11S
Version 2.0

DECnet-.11 D
Version 2.0

DECnet-IAS
Version 2.0

DECnet-RT
Version 1.0
DECnet/E
Version 1.0
DECnet-VAX
Version 1.0
DECnet-20
Version 1.0
2040/50/~ ..

2020

EIA
EIA
Sync
Sync
<9.6K bits/sec <19.2K
bits/sec
DQ11-DA
DP11
DMC11-AR
DU11-DA
DMC11-DA
DUP11-DA
DV11
DQ11-DA
DP11
DMC11-AR
DU11-DA
DMC11-DA
DUP11-DA
DV11
DUV11-DA
DQ11-DA
DP11
DU11-DA
DMC11-AR
DMC11-DA
DUP11-DA
DV11
DQ11-DA
DP11
DMC11-AR
DU11-DA
DMC11-DA
DUP11-DA
DV11
DMC11-AR
DU11-DA
DMC11-DA
DUP11-DA
DUV11-DA
DMC11-DA
DMC11-AR
DMC11-AR
DMC11-DA
DN20-BA
(DUP11-DA)

-_... -.

DN20 BA/BB
!
(DUP11 - DA)

Local
Sync
56K bits/sec

Local
Sync
1M bits/sec

Local
Parallel

DL 11-C
DL11-WA
DZ11-C
DZ11-D
DL 11-C
DL 11-WA
DZ11-C
DZ11-D

DMC11-AL
DMC11-MD

DMC11-AL
DMC11-MA

DA11

DMC11-AL
DMC11-MD

DMC11-AL
DMC11-MA

DL 11-C
DL11-WA
DZ11-C
DZ11-D
DL 11-C
DL 11-WA
DZ11-C
DZ11-D
DL 11-C
DL 11-WA

DMC11-AL
DMC11-MD

DMC11-AL
DMC11-MA

20mA
EIA
Async
Async
<9.6K bits/sec <9.6 bits/sec
DL 11-E
DZ11-A
DZ11-B
DL 11-E
DZ11-A
DZ11-B

DL 11-E
DZ11-A
DZ11-B
DL 11-E
DZ11-A
DZ11-B
DL 11-E

.--

---

DMC11-AL
DMC11-MD

DMC11-AL
DMC11-MA

DMC11-AL
DMC11-MD

DMC11-AL
DMC11-MA

..._--

--'
DA11

DA11

-----DA11

... ---

-.- i - - - - DMC11-AL
DMC11-AL
DMC11-MA
DMC11-MD
DMC11-AL
DMC11-AL
DMC11-MD
DMC11-M~
DN21-BA
(DMC11-AL
f
_ .Q..MG.11.-MD.l. ...
.. _--

_ -- --t

SOFTWARE SUPPORT CATEGORIES
Each software product (hereinafter 'SOFTWARE') with a designated Support Category A or B in the applicable Software Product Description (SPD)
existing at the time of order will be the current release at the time of delivery and will conform to the SPD. DIGITAL's sole obligation shall be to correct
defects (nonconformance of the SOFTWARE to the SPD) as described below. Any SOFTWARE with a designated Support Category C will be furnished
on an 'as is' basis.
For SOFTWARE with a designated Support Category A or B, DIGITAL will provide the services set forth below without additional charge.
CATEGORY A
1. Upon notification by customer to the nearest DIGITAL office that the computer system, including all required prerequisite hardware and software, is
ready for the installation of the SOFTWARE, DIGITAL will install such SOFTWARE in any location within the contiguous forty-eight (48) United
States, the District of Columbia, or a country in which DIGITAL or a subsidiary of DIGITAL has a software service facility. The notification must be
received by DIGITAL and the system must be ready for installation within thirty (30) days after the delivery of the SOFTWARE to customer or
DIGITAL will have no obligation to install. Installation will consist of: (1) verification that all components of the SOFTWARE have been received by
customer, (2) loading the SOFTWARE, and (3) executing a DIGITAL sample procedure.
2. During the ninety (90) day period after installation, if the customer encounters a problem with the current unaltered release of the SOFTWARE
which DIGITAL determines to be a defect in the SOFTWARE, DIGITAL will provide the following remedial service (on site where necessary): (1) if the
SOFTWARE is inoperable, apply a temporary correction (TC) or make a reasonable attempt to develop an emergency by-pass, and (2) assist the
customer to prepare a Software Performance Report (SPR) and submit it to DIGITAL.
3. During the one (1) year period following installation, if the customer encounters a problem with the SOFTWARE which his diagnosis indicates is
caused by a SOFTWARE defect, the customer may submit an SPR to DIGITAL. DIGITAL will respond to probiems reported in SPRs which are
caused by defects in the current unaltered release of the SOFTWARE via the Maintenance Periodical for the SOFTWARE, which reports SPRs
received, code corrections, temporary corrections, generally useful emergency by-passes and/or notice of the availability of corrected code.
Software Updates, if any, released by DIGITAL during the one (1) year period, will be provided to the customer on DIGITAL's standard distribution
media as specified in the applicable SPD. The customer will be charged only for the media on which such updates are provided, unless otherwise
stated in the applicable SPD, at DIGITAL's then current media prices.
CATEGORY B
During the one (1) year period following delivery, the services provided to the customer will be the same as set forth in 3 above.
CATEGORYC
SOFTWARE is provided on an 'as is' basis. Any software services, if available, will be provided at the then current charges.
DIGITAL shall have the right to make additional charges for any additional effort required to provide services resulting from customer use of other than
current unaltered release of the SOFTWARE operated in accordance with the SPD.